Club Cobra Gas - N Exhaust  

Go Back   Club Cobra > Cobra Talk Areas > ALL COBRA TALK

MMG Superformance
Nevada Classics
Main Menu
Module Jump:
Nevada Classics
Nevada Classics
Advertise at CC
Banner Ad Rates
Keith Craft Racing
MMG Superformance
Keith Craft Racing
March 2024
S M T W T F S
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            

Kirkham Motorsports

Like Tree2Likes
  • 2 Post By blykins

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 03-27-2020, 05:57 PM
saki302's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2009
Location: Los Angeles, CA
Cobra Make, Engine: Superformance Mk3, Roush 427
Posts: 229
Not Ranked     
Default Roush 427R recommended intake manifold gasket?

Hello,

Thanks all for the oil pan gasket recommendations-

I'm now getting ready to replace the intake manifold gaskets.

Which is the recommended gasket to go with on the Roush 351W motors? (427R, vic jr intake)

I'm looking at the Edelbrock 7219 or Fel-pro 1262S3
I also see one mention of Edelbrock 7220 gaskets..

Would these be a good match to the roush heads and Vic jr intake?

I was reading an old thread about the roush motors using an improper intake gasket as-built from the factory.

Thanks!

-Dave
__________________

Last edited by saki302; 03-27-2020 at 06:00 PM..
Reply With Quote
  #2 (permalink)  
Old 03-28-2020, 05:27 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2009
Location: Harrison Twp, MI
Cobra Make, Engine: SPF Coupe #136, 427SR FI
Posts: 296
Not Ranked     
Default

Quote:
Originally Posted by saki302 View Post
Hello,

Thanks all for the oil pan gasket recommendations-

I'm now getting ready to replace the intake manifold gaskets.

Which is the recommended gasket to go with on the Roush 351W motors? (427R, vic jr intake)

I'm looking at the Edelbrock 7219 or Fel-pro 1262S3
I also see one mention of Edelbrock 7220 gaskets..

Would these be a good match to the roush heads and Vic jr intake?

I was reading an old thread about the roush motors using an improper intake gasket as-built from the factory.

Thanks!

-Dave
Dave,

When my 427sr sucked the intake gasket Roush said they their intake gasket is a special design and highly recommended ordering it versus an aftermarket.

So I would contact them to be sure.

Jeff
Reply With Quote
  #3 (permalink)  
Old 03-28-2020, 10:21 AM
saki302's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2009
Location: Los Angeles, CA
Cobra Make, Engine: Superformance Mk3, Roush 427
Posts: 229
Not Ranked     
Default

I sent them an email just now, thanks!
__________________
Reply With Quote
  #4 (permalink)  
Old 03-28-2020, 01:06 PM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2001
Location: Louisville, KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,389
Send a message via AIM to blykins
Not Ranked     
Default

That's goofy. They use AFR heads, which use a Felpro 1262 gasket.
jetblue69 and g8rnbft like this.
__________________
www.lykinsmotorsports.com
Reply With Quote
  #5 (permalink)  
Old 03-28-2020, 06:43 PM
saki302's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2009
Location: Los Angeles, CA
Cobra Make, Engine: Superformance Mk3, Roush 427
Posts: 229
Not Ranked     
Default

Haha, thanks- should I get the steel core one, and just use RTV to seal the china walls?

I remember doing that in the mid 90s when I had my 5.0 Mustang

Thanks!

-Dave
__________________
Reply With Quote
  #6 (permalink)  
Old 03-29-2020, 03:20 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2001
Location: Louisville, KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,389
Send a message via AIM to blykins
Not Ranked     
Default

I don't use the steel core gaskets. Just the plain ones.

The key to a successful intake gasket installation is to glue the gaskets to the heads so they don't move around and then use a very thin layer of silicone between the gasket and the intake. I also use silicone on the china walls. Cork/rubber can pose too many problems.

A lot of people have their favorites: Motorcraft TA-31, Right Stuff, etc. I use Dow Corning 732 clear silicone for everything in the first paragraph. Been using it for years.
__________________
www.lykinsmotorsports.com
Reply With Quote
  #7 (permalink)  
Old 03-29-2020, 06:11 AM
Tom Wells's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Mar 2000
Location: St. Augustine, FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,912
Not Ranked     
Default

At the risk of contradicting more experienced engine gurus (you know who you are :-), please look at this thread: 390 problems | Capital Area Cobra Club

If you look on the 'net for them, you can find lots of other folks who have experienced similar intake gasket failures posting similar threads.

The failures appear to be across the board, affecting small blocks, FEs, 385s and all. It seems to occur mostly in engines driven frequently, where heat cycles mount up. I've had it happen to my cars (both 385s) and seen it in 351s and FEs personally.

I use Victor Reinz gaskets now, and no more problems. They are reinforced.

The Fel-Pro Print-O-Seal (AKA Fail-Prone Print-O-Leak) are fine for race engines and any others that experience relatively few heat cycles between intake manifold R&R for maintenance.

After we confronted Fel-Pro at the PRI Show a number of years ago, we got vehement denial followed by their issuance of their steel reinforced intake gaskets, denoted by an "S" on the end of the part number.

Use what you want to use! Just be prepared for a possible consequence.

Just sayin'

Tom
__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small!
Reply With Quote
  #8 (permalink)  
Old 03-29-2020, 06:55 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2001
Location: Louisville, KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,389
Send a message via AIM to blykins
Not Ranked     
Default

The FE is a different animal. The intake gasket is essentially submerged in oil.

I will say that, to this day, I haven't not had any issues with Windsors and using that 1262 gasket. The majority of my Windsors use AFR and TFS heads and they all get that gasket. As a matter of fact, I don't like using the steel gasket because there is not a lot of "give" on the sealing surface.

One caveat: I use sealant and I also make sure every intake manifold is flat/straight/angled correctly on the flanges. I feel like that is the problems that most people face. You can't simply buy an intake manifold and bolt it on.

On FE's, I will use Mr. Gasket paper gaskets, with sealant.
__________________
www.lykinsmotorsports.com
Reply With Quote
  #9 (permalink)  
Old 03-29-2020, 07:24 AM
CC Member
Visit my Photo Gallery

 
Join Date: May 2006
Location: St. Louisville, Oh
Cobra Make, Engine: A&C 67 427 cobra SB
Posts: 2,444
Not Ranked     
Default

My aluminum heads were not tapped deep enough on the 4 corners. More accurately they failed to run a bottom tap. The threads tapered tighter at the bottom and locked the bolts up before the heads touched the intake. I could fit a 0.005" feeler between the bolt head and the intake, with the bolt torqued to spec.

I always screw the bolts into the heads with the intake off and make sure they do not bottom out too soon, since that happened to me.

I used the Victor Reinz gaskets and followed all the advice given by Blykins above. I also re-torqued the bolts after a half dozen temp cycles, and every one turned about an 1/8 of a turn (maybe a little less). I think I did this in 2008 or 2009. No issue since.

Full disclosure, I used studs, with stainless steel nuts and washers. Then I put stainless steel acorn nuts on top. The acorn nuts act as a jam nut. The studs were set with a removable lock tight in the heads. Also you have to set the studs at the correct depth to make all this work, which includes the correct length stud. The looks were worth the effort IMHO.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 09:41 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy
Links monetized by VigLink