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Pro-seal

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David.Miller(at)cmworks.c
Guest

Posted: Wed Dec 19, 2007 8:07 am Post subject: Pro-seal

Does anyone know if Pro-seal is compatible with auto-fuel.

  

  

 Dave Miller

 Harmon Rocket II 

 under construction

 Lexington, TN

  [quote][b]

bluebird266(at)dslextreme
Guest

Posted: Wed Dec 19, 2007 12:39 pm Post subject: Pro-seal

why do you want to use auto fuel in an IO540?



David Miller

 	  Quote: 	
		   Does anyone know if Pro-seal is compatible with auto-fuel.

 Dave Miller

 Harmon Rocket II

 under construction

 Lexington, TN

rocketbob(at)gmail.com
Guest

Posted: Wed Dec 19, 2007 1:14 pm Post subject: Pro-seal

I have no problems running mogas in my RV over five years now.  Proseal holds up fine.  Why throw money away to run 100LL.  Over the life of the engine the savings in hourly fuel costs will pay for the overhaul.



Regards, 

Bob Japundza

RV-6 flying F1 under const.



On Dec 19, 2007 11:05 AM, David Miller <David.Miller(at)cmworks.com (David.Miller(at)cmworks.com)> wrote:

[quote]     Does anyone know if Pro-seal is compatible with auto-fuel.

  

  

 Dave Miller

 Harmon Rocket II 

 under construction

 Lexington, TN

   	  Quote: 	
		  

	


[b]

gyoung

Joined: 09 Jan 2006
Posts: 211
Location: Republic of Texas

Posted: Wed Dec 19, 2007 1:31 pm Post subject: Pro-seal

On the off chance you plan to use auto fuel to leak test the tank, plan on

replacing the quick drain O-rings. A friend did that and it ate the O-rings

in short order.



Regards,

Greg Young

 



[quote] --

David.Miller(at)cmworks.c
Guest

Posted: Thu Dec 20, 2007 7:34 am Post subject: Pro-seal

Time:  12:39:41 PM PST US    Subject:  Re: Pro-seal    From:  bluebird266(at)dslextreme.com (bluebird266(at)dslextreme.com)       

      

      

      why do you want to use auto fuel in an IO540?

--------------------------------------------------------------------------

 100LL around here is about $1.50 higher than Amoco 93 that about $20 an hour, give or take, difference in fuel expense.  That adds up quickly over time, that's $40000 on a 2000hr engine life.  I don't plan on using high compression pistons and I've heard the Airflow fuel systems work fine with auto-fuel.  I have used, and have friends that use, auto fuel regularly with little if any issues.  The only issue I've ever had was having to replace 0-rings in my fuel primer on a 172, although I don't know if it was the auto fuel or old o-rings.  Also, if you have a private strip, auto fuel is much easier to come by.  

  

 I'd appreciate any feedback/experiences on the use of auto fuel.

  [quote][b]

russ(at)wernerworld.com
Guest

Posted: Thu Dec 20, 2007 8:08 am Post subject: Pro-seal

Only downside to cargas that I can see is you can't get enough  HP.  I want every horse and then some.  If it means low compression  and low HP while still hauling around this heavy engine, I'll pass!

  

 Russ

  

  



 ---

Mytyweav(at)earthlink.net
Guest

Posted: Thu Dec 20, 2007 8:33 am Post subject: Pro-seal

Our Rotax's run just great on 91 octane. They have 10.5 to 1 compression 

and no detenation at all. Timing is set very close to the Lycoming's (at) 

25 degrees BTDC. I see no reason not to run it in the 540. I run it in 

my 0-360 all the time. Compression there is 8.2.  The only issue with 

car gas is letting it sit in the tanks. Undesireable...   and can be 

cured fairly quick by simply filling it up with some 100LL if it's going 

to be sitting still for an extended period. If I'm zipping out to 

Wyoming or up to Idaho, you can bet I fill it up with car 

gas........although the difference here in California is much less in 

cost. Our 100LL is $4.19 and the car gas is $3.45. Still amounts to 

almost $10 an hour....and the plugs don't get gooed up with lead.

Weav



Wernerworld wrote:

[quote] Only downside to cargas that I can see is you can't get enough HP.  I 

 want every horse and then some.  If it means low compression and low 

 HP while still hauling around this heavy engine, I'll pass!

  

 Russ

  

  

 ---

rocketbob(at)gmail.com
Guest

Posted: Thu Dec 20, 2007 9:48 am Post subject: Pro-seal

That's incorrect.  Octane is the measure of resistance to detonation, hot how much latent energy is present in the fuel.  87 octane has the same BTU content as 100LL.  Lowering compression is another story, but for a stock  8.5:1 Lyc there is no speed loss running mogas.  I can't tell any difference running mogas but my wallet sure can.



The last six months in my RV I have only put in 20 gals. of 100LL.  Cut the filter recently, it absolutely no junk in it, analysis came back good.  There's no reason to not run mogas in an injected 540, I have two friends with rockets that do it all the time. 



Regards,

Bob Japundza

RV-6 flying F1 under const.



On Dec 20, 2007 11:08 AM, Wernerworld <russ(at)wernerworld.com (russ(at)wernerworld.com)> wrote:

[quote]          Only downside to cargas that I can see is you can't get enough  HP.  I want every horse and then some.  If it means low compression  and low HP while still hauling around this heavy engine, I'll pass!

  

 Russ

  

  



 ---

jrstone(at)insightbb.com
Guest

Posted: Thu Dec 20, 2007 9:56 am Post subject: Pro-seal

Amen Russ,

 I'm still trying to figure out how to get afterburner  working in mine and I have 300 HP already.

 Jim Stone

 Louisville

 In paint

 [quote]   ---

fred.laforge(at)verizon.n
Guest

Posted: Thu Dec 20, 2007 2:33 pm Post subject: Pro-seal

Bob, Have you had any vapor  pressure problems at altitude? As I understand this is where the problem  lies.

 Fred LaForge EAA tech counselor,RV-4, HR-II project

 [quote]   ---

rocketbob(at)gmail.com
Guest

Posted: Thu Dec 20, 2007 6:48 pm Post subject: Pro-seal

No problems with altitude, I've run mogas up to 11500.  Only once I had a hint of vapor lock on takeoff on a 95 degree day when I left the boost pump off; turning the pump cleared up the occasional miss.  I have a hodges fuel volatility tester and the autogas I use tests similarly as 100LL.  100LL boils just as easily as the mogas in the tester. 



Regards,

Bob



On Dec 20, 2007 5:26 PM, FRED LA FORGE <fred.laforge(at)verizon.net (fred.laforge(at)verizon.net)> wrote:

[quote]            Bob, Have you had any vapor  pressure problems at altitude? As I understand this is where the problem  lies.

 Fred LaForge EAA tech counselor,RV-4, HR-II project

 [quote]   ---

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