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philperry9

Joined: 23 Nov 2011
Posts: 381

Posted: Sun Apr 09, 2017 6:52 am Post subject: Spark Plugs

I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags. Â  Further checking showed a bad plug...Â  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.Â  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.



At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test. Â  I suspect the box was dropped in one of the many freight trips they've made over their lifetime. Â 

What seems to be the spark plug of choice? Â  I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).

I've heard mixed reviews on Champion plugs.Â  I've heard great reviews on the Tempest. Â  But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.

What seems to be the plug of choice?Â  I'd really like to get to an iridium plug if possible.Â  Currently have Tempest UREM38E.

Thanks,

Phil

civengpe

Joined: 14 Feb 2011
Posts: 105

Posted: Sun Apr 09, 2017 7:02 am Post subject: Spark Plugs

Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive.Â 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags. Â  Further checking showed a bad plug...Â  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.Â  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test. Â  I suspect the box was dropped in one of the many freight trips they've made over their lifetime. Â 



What seems to be the spark plug of choice? Â  I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.Â  I've heard great reviews on the Tempest. Â  But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?Â  I'd really like to get to an iridium plug if possible.Â  Currently have Tempest UREM38E.



Thanks,

Phil

Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Sun Apr 09, 2017 7:03 am Post subject: Spark Plugs

I only go iridium.  I just had mine out after 100 hours on the RV14.  It came with standard plugs which I replaced before I ran the engine with iridium.  I had absolutely no lead fouling on the plugs at 100 hours.

Tim



 	  Quote: 	
		   On Apr 9, 2017, at 9:51 AM, Phillip Perry <philperry9(at)gmail.com> wrote:

 

 I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags.   Further checking showed a bad plug...  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

 

 At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test.   I suspect the box was dropped in one of the many freight trips they've made over their lifetime.  

 

 What seems to be the spark plug of choice?   I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).

 

 I've heard mixed reviews on Champion plugs.  I've heard great reviews on the Tempest.   But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.

 

 What seems to be the plug of choice?  I'd really like to get to an iridium plug if possible.  Currently have Tempest UREM38E.

 

 Thanks,

 Phil

philperry9

Joined: 23 Nov 2011
Posts: 381

Posted: Sun Apr 09, 2017 7:27 am Post subject: Spark Plugs

Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.  You'd think that would be something they'd mention to justify the cost. 





Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:

 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive. 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags.   Further checking showed a bad plug...  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test.   I suspect the box was dropped in one of the many freight trips they've made over their lifetime.  



What seems to be the spark plug of choice?   I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.  I've heard great reviews on the Tempest.   But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?  I'd really like to get to an iridium plug if possible.  Currently have Tempest UREM38E.



Thanks,

Phil

Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Sun Apr 09, 2017 7:47 am Post subject: Spark Plugs

Yes, the fine wire are iridium.  Just be careful to never bend the wire, as it is very fine and somewhat fragile.  At least that's what tempest says, although I've never had an issue with them.

Tim



On Apr 9, 2017, at 10:27 AM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.  You'd think that would be something they'd mention to justify the cost. 





Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:

 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive. 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags.   Further checking showed a bad plug...  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test.   I suspect the box was dropped in one of the many freight trips they've made over their lifetime.  



What seems to be the spark plug of choice?   I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.  I've heard great reviews on the Tempest.   But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?  I'd really like to get to an iridium plug if possible.  Currently have Tempest UREM38E.



Thanks,

Phil

civengpe

Joined: 14 Feb 2011
Posts: 105

Posted: Sun Apr 09, 2017 7:47 am Post subject: Spark Plugs

I really don't think so, but I'm not sure.Â 

Shannon



On Sun, Apr 9, 2017 at 10:31 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?



I've checked their site and can't seem to find it mentioned.Â  You'd think that would be something they'd mention to justify the cost.Â 



Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:



 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive.Â 



Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags. Â  Further checking showed a bad plug...Â  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.Â  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test. Â  I suspect the box was dropped in one of the many freight trips they've made over their lifetime. Â 



What seems to be the spark plug of choice? Â  I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.Â  I've heard great reviews on the Tempest. Â  But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?Â  I'd really like to get to an iridium plug if possible.Â  Currently have Tempest UREM38E.



Thanks,

Phil

Lenny Iszak

Joined: 23 Mar 2008
Posts: 270

Posted: Sun Apr 09, 2017 7:55 am Post subject: Re: Spark Plugs

I have around 200 hours on the Tempest UREM38S finewire plugs. They always look clean and the engine is idling much smoother. I was concerned at first seeing how those center iridium electrodes were welded in. I was told by Tempest and a bunch of others who were running these for hundreds of hours that they never come apart. Ordered 12 of them. One of them had a really bad weld. Called them up and they overnighted me a new one. Tempest is awesome!



Yes, they are expensive but long therm these are the cheaper ones.



Be very careful trying to gap these plugs, when you bend the iridium electrode it can pop off the weld...



Lenny

Lenny Iszak

Joined: 23 Mar 2008
Posts: 270

Posted: Sun Apr 09, 2017 8:39 am Post subject: Re: Spark Plugs

Hm, looks like a missed marketing opportunity for them:)



It's mentioned here:



http://www.tempestplus.com/Portals/0/PDFs/Tempest%20Spark%20Plugs%20-%20Where%20its%20made.pdf



and here:



http://www.tempestplus.com/Portals/0/PDFs/Temepst%20OilFilter-SparkPlug%204page.pdf



and here (page 6) they talk about not bending the iridium electrodes:



http://www.tempestplus.com/Portals/0/PDFs/TechTips/Light%20My%20Fire%200813.pdf



Lenny



 	  philperry9 wrote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.  You'd think that would be something they'd mention to justify the cost.

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Sun Apr 09, 2017 8:41 am Post subject: Spark Plugs

Well, in spite of my requesting Tempest plugs, my overhaul shop 

installed new Champions. Later, I acquired at low cost 8 champion 

iridium plugs. I installed 6 of the iridium as soon as I got them on the 

top positions.So I have a mixed bag. I pulled the plugs for my condition 

inspection at 90 hours. All looked good. One massive tested high 

resistance (about 7.5K) so it was replaced. I have never seen more than 

120 rpm drop on runups, mostly 100-110. I have no lead balls at all, no 

issues. I will eventually get some Tempest, but I'm not going to go drop 

$900 on fine wires that are not needed. I know the resistors in the 

Champions are likely to fail before the electrodes do.

I may go to some electronic system for one side eventually, but my 

Bendix S-1200 have performed flawlessly.



On 4/9/2017 8:55 AM, Lenny Iszak wrote:

 	  Quote: 	
		   



 I have around 200 hours on the Tempest UREM38S finewire plugs. They always look clean and the engine is idling much smoother. I was concerned at first seeing how those center iridium electrodes were welded in. I was told by Tempest and a bunch of others who were running these for hundreds of hours that they never come apart. Ordered 12 of them. One of them had a really bad weld. Called them up and they overnighted me a new one. Tempest is awesome!



 Yes, they are expensive but long therm these are the cheaper ones.



 Be very careful trying to gap these plugs, when you bend the iridium electrode it can pop off the weld...



 Lenny





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=468191#468191

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

philperry9

Joined: 23 Nov 2011
Posts: 381

Posted: Sun Apr 09, 2017 9:04 am Post subject: Spark Plugs

So I'm guessing they come pre-gapped?



Sent from my iPhone



On Apr 9, 2017, at 10:39 AM, Tim Olson <Tim(at)MyRV10.com (Tim(at)MyRV10.com)> wrote:

 	  Quote: 	
		  



Yes, the fine wire are iridium.  Just be careful to never bend the wire, as it is very fine and somewhat fragile.  At least that's what tempest says, although I've never had an issue with them.

Tim



On Apr 9, 2017, at 10:27 AM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.  You'd think that would be something they'd mention to justify the cost. 





Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:

 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive. 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags.   Further checking showed a bad plug...  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test.   I suspect the box was dropped in one of the many freight trips they've made over their lifetime.  



What seems to be the spark plug of choice?   I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.  I've heard great reviews on the Tempest.   But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?  I'd really like to get to an iridium plug if possible.  Currently have Tempest UREM38E.



Thanks,

Phil

civengpe

Joined: 14 Feb 2011
Posts: 105

Posted: Sun Apr 09, 2017 9:22 am Post subject: Spark Plugs

They do.Â 



Shannon

On Apr 9, 2017 12:08 PM, "Phillip Perry" <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote: 	  Quote: 	
		  So I'm guessing they come pre-gapped?



Sent from my iPhone



On Apr 9, 2017, at 10:39 AM, Tim Olson <Tim(at)MyRV10.com (Tim(at)MyRV10.com)> wrote:

 	  Quote: 	
		  



Yes, the fine wire are iridium.Â  Just be careful to never bend the wire, as it is very fine and somewhat fragile.Â  At least that's what tempest says, although I've never had an issue with them.

Tim



On Apr 9, 2017, at 10:27 AM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.Â  You'd think that would be something they'd mention to justify the cost.Â 





Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:

 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive.Â 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags. Â  Further checking showed a bad plug...Â  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.Â  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test. Â  I suspect the box was dropped in one of the many freight trips they've made over their lifetime. Â 



What seems to be the spark plug of choice? Â  I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.Â  I've heard great reviews on the Tempest. Â  But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?Â  I'd really like to get to an iridium plug if possible.Â  Currently have Tempest UREM38E.



Thanks,

Phil

Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Sun Apr 09, 2017 9:56 am Post subject: Spark Plugs

That is basically what I found in all of the ones that I have purchased. I did not need to gap them at all as they were already in spec.  As Lenny just proved, yes they are iridium for sure. All of the fine wire plugs would be, because the regular steel  would erode too quickly.

For all practical purposes, the Arabian plugs will not grown at all. That is why they last so long. The extra open area around the electrode only enhances the ability or the plug to fire the fuel.  So that is why people report better performance or better idling.

Tim



On Apr 9, 2017, at 12:03 PM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  So I'm guessing they come pre-gapped?



Sent from my iPhone



On Apr 9, 2017, at 10:39 AM, Tim Olson <Tim(at)MyRV10.com (Tim(at)MyRV10.com)> wrote:

 	  Quote: 	
		  



Yes, the fine wire are iridium.  Just be careful to never bend the wire, as it is very fine and somewhat fragile.  At least that's what tempest says, although I've never had an issue with them.

Tim



On Apr 9, 2017, at 10:27 AM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.  You'd think that would be something they'd mention to justify the cost. 





Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:

 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive. 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags.   Further checking showed a bad plug...  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test.   I suspect the box was dropped in one of the many freight trips they've made over their lifetime.  



What seems to be the spark plug of choice?   I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.  I've heard great reviews on the Tempest.   But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?  I'd really like to get to an iridium plug if possible.  Currently have Tempest UREM38E.



Thanks,

Phil

philperry9

Joined: 23 Nov 2011
Posts: 381

Posted: Sun Apr 09, 2017 10:11 am Post subject: Spark Plugs

Got them ordered and they should be here next week.Â  I'll tell the kids they're just going to have to work harder in school and get a scholarship.



On Sun, Apr 9, 2017 at 12:55 PM, Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)> wrote:

 	  Quote: 	
		  

That is basically what I found in all of the ones that I have purchased. I did not need to gap them at all as they were already in spec.Â  As Lenny just proved, yes they are iridium for sure. All of the fine wire plugs would be, because the regular steel Â would erode too quickly.

For all practical purposes, the Arabian plugs will not grown at all. That is why they last so long. The extra open area around the electrode only enhances the ability or the plug to fire the fuel.Â  So that is why people report better performance or better idling.

Tim



On Apr 9, 2017, at 12:03 PM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  So I'm guessing they come pre-gapped?



Sent from my iPhone



On Apr 9, 2017, at 10:39 AM, Tim Olson <Tim(at)MyRV10.com (Tim(at)MyRV10.com)> wrote:

 	  Quote: 	
		  



Yes, the fine wire are iridium.Â  Just be careful to never bend the wire, as it is very fine and somewhat fragile.Â  At least that's what tempest says, although I've never had an issue with them.

Tim



On Apr 9, 2017, at 10:27 AM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.Â  You'd think that would be something they'd mention to justify the cost.Â 





Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:

 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive.Â 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags. Â  Further checking showed a bad plug...Â  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.Â  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test. Â  I suspect the box was dropped in one of the many freight trips they've made over their lifetime. Â 



What seems to be the spark plug of choice? Â  I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.Â  I've heard great reviews on the Tempest. Â  But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?Â  I'd really like to get to an iridium plug if possible.Â  Currently have Tempest UREM38E.



Thanks,

Phil

Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Sun Apr 09, 2017 10:24 am Post subject: Spark Plugs

. Look at it this way, you are protecting your ability to pay for college. Because you will replace spark plugs far less often, and they are less less likely to fail.

These may go to TBO.

Tim 



On Apr 9, 2017, at 1:11 PM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  Got them ordered and they should be here next week.  I'll tell the kids they're just going to have to work harder in school and get a scholarship.



On Sun, Apr 9, 2017 at 12:55 PM, Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)> wrote:

 	  Quote: 	
		  

That is basically what I found in all of the ones that I have purchased. I did not need to gap them at all as they were already in spec.  As Lenny just proved, yes they are iridium for sure. All of the fine wire plugs would be, because the regular steel  would erode too quickly.

For all practical purposes, the Arabian plugs will not grown at all. That is why they last so long. The extra open area around the electrode only enhances the ability or the plug to fire the fuel.  So that is why people report better performance or better idling.

Tim



On Apr 9, 2017, at 12:03 PM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  So I'm guessing they come pre-gapped?



Sent from my iPhone



On Apr 9, 2017, at 10:39 AM, Tim Olson <Tim(at)MyRV10.com (Tim(at)MyRV10.com)> wrote:

 	  Quote: 	
		  



Yes, the fine wire are iridium.  Just be careful to never bend the wire, as it is very fine and somewhat fragile.  At least that's what tempest says, although I've never had an issue with them.

Tim



On Apr 9, 2017, at 10:27 AM, Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:

 	  Quote: 	
		  Do you know if the Tempest fine wire plugs have iridium electrodes, or are they something different?

I've checked their site and can't seem to find it mentioned.  You'd think that would be something they'd mention to justify the cost. 





Sent from my iPhone



On Apr 9, 2017, at 10:02 AM, Shannon Hicks <civeng123(at)gmail.com (civeng123(at)gmail.com)> wrote:

 	  Quote: 	
		  Phil,

I am running Tempest fine wire in all 12 spots on my engine. I have just over 200 hours with zero issues so far. In fact, they looked brand new when I pulled them at my condition inspection (150ish hrs). The downside is they are insanely expensive. 

Shannon



On Sun, Apr 9, 2017 at 9:55 AM Phillip Perry <philperry9(at)gmail.com (philperry9(at)gmail.com)> wrote:



 	  Quote: 	
		  I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags.   Further checking showed a bad plug...  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test.   I suspect the box was dropped in one of the many freight trips they've made over their lifetime.  



What seems to be the spark plug of choice?   I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



I've heard mixed reviews on Champion plugs.  I've heard great reviews on the Tempest.   But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



What seems to be the plug of choice?  I'd really like to get to an iridium pl8979519211651296671gmail_msg">

Thanks,

Phil

Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Sun Apr 09, 2017 5:33 pm Post subject: Spark Plugs

I went through a period of intermittent ignition problems: first on the lightspeed and later on the mag. Major cause of both turned out to be the wires. 

Albert Gardner

RV-10 N991RV

Yuma, AZ

 

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Phillip Perry

Sent: Sunday, April 09, 2017 7:52 AM

To: rv10-list(at)matronics.com

Subject: Spark Plugs



 

I was doing a run up the other day and noticed that I had a dead cylinder on #2 when running on the mags.   Further checking showed a bad plug...  I'm still not completely happy with what I'm seeing as I've seen suspect signs that other cylinders are dropping off intermittently on the mag too.  We can get into the trouble shooting in another thread at a future time if this doesn't resolve the issues.

 



At this point, after having found one bad plug and having questions of the others, I'm going to go ahead and replace all 6 (Mag) and then re-test.   I suspect the box was dropped in one of the many freight trips they've made over their lifetime.  



 



What seems to be the spark plug of choice?   I have 9:1 pistons with a Lightspeed Ignition (Top) and a Slick Impulse Mag (Bottom).



 



I've heard mixed reviews on Champion plugs.  I've heard great reviews on the Tempest.   But I haven't heard any reviews on Tempest Iridium (assuming they exist?) plugs.



 



What seems to be the plug of choice?  I'd really like to get to an iridium plug if possible.  Currently have Tempest UREM38E.



 



Thanks,



Phil

_________________
RV-9A N872RV
RV-10 N991RV

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