Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

M 14 P

Matronics Email Lists Forum Index -> Yak-List

View previous topic :: View next topic

Author Message

wise(at)txc.net.au
Guest

Posted: Mon May 14, 2012 2:02 pm Post subject: M 14 P

G’Day All,

 

Can I please have some input re Ivor’s questions.

I have done all of my valves, intake and exhaust and used some grinding wheels (Dressed the angles with a diamond tip stone grinder in the lathe. One hell of a mess) and made some various size mandrels for both intake and exhaust to suite the slight differences of the guides.

I found the exhaust seats to be extremely hard and went by the angles in the manual.

 

 

Hey Chris, 



Do you know or could you find out if anyone knows what the M14P's  factory exhaust valve face and exhaust valve seat angles should be ?



 



Also, please ask if operators have had their exhaust valve seats re-cut and if so, did they encounter difficulty cutting the seat due to the hardness ?



 



After hearing about your difficulties, I am contemplating making a diamond impregnated dressing stone for this task.



Any takers ?



 



Is there an exchange service for overhauled cylinders ?



I have a mate who requires 3 urgently. I guess when the leakage exceeds the starting air flow, you have to either fit an electric start or FIX the problem, eh ?



 



Cheers,



Ivor Paech LAME



 



 



  [quote][b]

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

GeorgeCoy

Joined: 02 Dec 2010
Posts: 310

Posted: Mon May 14, 2012 2:41 pm Post subject: M 14 P

Motorstar will overhaul your cylinders and make exchanges as well.  Contact me off list for details.

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Chris Wise

Sent: Monday, May 14, 2012 5:59 PM

To: yak-list(at)matronics.com

Subject: FW: M 14 P

G’Day All,

Can I please have some input re Ivor’s questions.

I have done all of my valves, intake and exhaust and used some grinding wheels (Dressed the angles with a diamond tip stone grinder in the lathe. One hell of a mess) and made some various size mandrels for both intake and exhaust to suite the slight differences of the guides.

I found the exhaust seats to be extremely hard and went by the angles in the manual.

Hey Chris, 

Do you know or could you find out if anyone knows what the M14P's  factory exhaust valve face and exhaust valve seat angles should be ?

Also, please ask if operators have had their exhaust valve seats re-cut and if so, did they encounter difficulty cutting the seat due to the hardness ?

After hearing about your difficulties, I am contemplating making a diamond impregnated dressing stone for this task.

Any takers ?

Is there an exchange service for overhauled cylinders ?

I have a mate who requires 3 urgently. I guess when the leakage exceeds the starting air flow, you have to either fit an electric start or FIX the problem, eh ?

Cheers,

Ivor Paech LAME

 	  Quote: 	
		    http://www.matronics.com/Navigator?Yak-List 	
0 	  Quote: 	

1 	  Quote: 	

2 	  Quote: 	

3 	  Quote: 	

4 	  Quote: 	

5 	  Quote: 	

6 	  Quote: 	

7 	  Quote: 	

8 	  Quote: 	

9

  [quote][b]

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

dsavarese0812(at)bellsout
Guest

Posted: Tue May 15, 2012 4:47 am Post subject: M 14 P

Chris,'

     You should contact Barrett Precision Engines in Tulsa, Oklahoma.  I     guarantee you they will have the answers you need.  918-835-1089.      Outstanding US overhaul shop.  They have developed and have running     a beautiful coil-over electronic ignition (one coil per spark plug)     and fuel injection setup for the M14.

     

     Most likely you will speak to Rhonda first.  Ask Rhonda if you can     discuss some technical stuff with either Monte Barrett or Allen     Barrett.  They will also have cylinders for exchange.  Rhonda's     email address is Rhonda(at)BPAENGINES.com (Rhonda(at)BPAENGINES.com).

     Dennis

     

     

      	  Quote: 	
		  A. Dennis Savarese

334-285-6263

334-546-8182 (mobile)

www.yak-52.com

Skype - Yakguy1 	
     

     On 5/14/2012 4:58 PM, Chris Wise wrote:     [quote]                       <![endif]-->   <![endif]-->                

          

                                  

G’Day All,             

              

Can I please have some input re Ivor’s                 questions.             

I have done all of my valves, intake and                 exhaust and used some grinding wheels (Dressed the                 angles with a diamond tip stone grinder in the lathe.                 One hell of a mess) and made some various size mandrels                 for both intake and exhaust to suite the slight                 differences of the guides.             

I found the exhaust seats to be extremely                 hard and went by the angles in the manual.             

            

         

         

                     

Hey               Chris,          

                    

Do               you know or could you find out if anyone knows what the               M14P's  factory exhaust valve face and exhaust valve seat               angles should be ?         

                    

          

                    

Also,               please ask if operators have had their exhaust valve seats               re-cut and if so, did they encounter difficulty cutting               the seat due to the hardness ?         

                    

          

                    

After               hearing about your difficulties, I am contemplating making               a diamond impregnated dressing stone for this task.         

                    

Any               takers ?         

                    

          

                    

Is               there an exchange service for overhauled cylinders ?         

                    

I               have a mate who requires 3 urgently. I guess when the               leakage exceeds the starting air flow, you have to either               fit an electric start or FIX the problem, eh ?         

                    

          

                    

Cheers,         

                    

Ivor               Paech LAME         

                    

          

                    

          

       

        	  Quote: 	
		  

	
     [b]

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

wise(at)txc.net.au
Guest

Posted: Tue May 15, 2012 11:28 pm Post subject: M 14 P

G’Day Dennis,

 

Thanks for that and I shall forward it to my mate.

Rhonda and Monty are champions.

I bought a set of the 3 ring pistons for my engine.

And fitted the Richard Goode supercharger gears.

Naturally we did the vales, seats and only exhaust guides.

What a nightmare grinding the exhaust seats as the buggers are bloody hard.

Anyway all done and really came up good.

 

Thanks again and cheers,

Chris.

 

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of A. Dennis Savarese

Sent: Tuesday, 15 May 2012 10:14 PM

To: yak-list(at)matronics.com

Subject: Re: FW: M 14 P

 

Chris,'

You should contact Barrett Precision Engines in Tulsa, Oklahoma.  I guarantee you they will have the answers you need.  918-835-1089.  Outstanding US overhaul shop.  They have developed and have running a beautiful coil-over electronic ignition (one coil per spark plug) and fuel injection setup for the M14.



Most likely you will speak to Rhonda first.  Ask Rhonda if you can discuss some technical stuff with either Monte Barrett or Allen Barrett.  They will also have cylinders for exchange.  Rhonda's email address is Rhonda(at)BPAENGINES.com (Rhonda(at)BPAENGINES.com).

Dennis



 	  Quote: 	
		  A. Dennis Savarese334-285-6263334-546-8182 (mobile)www.yak-52.comSkype - Yakguy1 	




On 5/14/2012 4:58 PM, Chris Wise wrote: 

 

 

G’Day All,

 

Can I please have some input re Ivor’s questions.

I have done all of my valves, intake and exhaust and used some grinding wheels (Dressed the angles with a diamond tip stone grinder in the lathe. One hell of a mess) and made some various size mandrels for both intake and exhaust to suite the slight differences of the guides.

I found the exhaust seats to be extremely hard and went by the angles in the manual.

 

 

Hey Chris, 



Do you know or could you find out if anyone knows what the M14P's  factory exhaust valve face and exhaust valve seat angles should be ?



 



Also, please ask if operators have had their exhaust valve seats re-cut and if so, did they encounter difficulty cutting the seat due to the hardness ?



 



After hearing about your difficulties, I am contemplating making a diamond impregnated dressing stone for this task.



Any takers ?



 



Is there an exchange service for overhauled cylinders ?



I have a mate who requires 3 urgently. I guess when the leakage exceeds the starting air flow, you have to either fit an electric start or FIX the problem, eh ?



 



Cheers,



Ivor Paech LAME



 



 

 	  Quote: 	
		       [/b] 	
http://forums.matronics.com[/url]         - List Contribution Web generous nbsp;                        --> http://www.matronics.com/c=[/b]334-285-6263[/quote]0

  [quote][b]

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

MONTY(at)bpaengines.com
Guest

Posted: Mon May 21, 2012 7:16 am Post subject: M 14 P

BPE  has found the exhaust seats very hard and the best method to date has been to  grind them wet.  Use a lifting spring under the stone holder so the stone  does not stop on the seat.  BPE also made short stone holders so that a  Sioux stone driver can be inserted in the cylinder bore.  We have plans to  unbarrel the head but to date have not done this.

  

 Please, PLEASE!  Do not grind the face of the  exhaust valve at 45 Deg.  This causes a thin section under the valve head  and the valve will fracture dropping the separated head into the cylinder and  generally raise havoc inside the cylinder.

  

 The  correct angle is 46 Deg. 15 minutes.  Grind the seat the same angle.   BPE has found several exhaust seats that were too wide, particularly on the  outer edge, which can also cause some grief because the valve operates at a  higher temperature than the seat and the valve then wants to seat in the wrong  place relative to the seat when the engine is up to operating  temperature.

  

 BPE  has never seen evidence of an outer narrowing angle being applied by either  Russia or Romania and at factory assemble outer narrowing may not be  needed.  But good shop practices require at least 1/64 outer margin, valve  over seat.

  

 Monty  Barrett

 Barrett Precision Engines, Inc.

 [quote]   

   --

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

wise(at)txc.net.au
Guest

Posted: Mon May 21, 2012 2:04 pm Post subject: M 14 P

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Monty Barrett Sr

Sent: Tuesday, 22 May 2012 12:43 AM

To: A. Dennis Savarese; yak-list(at)matronics.com

Subject: RE: FW: M 14 P

BPE has found the exhaust seats very hard and the best method to date has been to grind them wet.  Use a lifting spring under the stone holder so the stone does not stop on the seat.  BPE also made short stone holders so that a Sioux stone driver can be inserted in the cylinder bore.  We have plans to unbarrel the head but to date have not done this.

Please, PLEASE!  Do not grind the face of the exhaust valve at 45 Deg.  This causes a thin section under the valve head and the valve will fracture dropping the separated head into the cylinder and generally raise havoc inside the cylinder.

The correct angle is 46 Deg. 15 minutes.  Grind the seat the same angle.  BPE has found several exhaust seats that were too wide, particularly on the outer edge, which can also cause some grief because the valve operates at a higher temperature than the seat and the valve then wants to seat in the wrong place relative to the seat when the engine is up to operating temperature.

BPE has never seen evidence of an outer narrowing angle being applied by either Russia or Romania and at factory assemble outer narrowing may not be needed.  But good shop practices require at least 1/64 outer margin, valve over seat.

Monty Barrett

Barrett Precision Engines, Inc.

[quote]

--

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Yak-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum