THE End-all intake gasket question - Ford Mustang Forums : Corral.net Mustang Forum
 4Likes
  • 3 Post By 2 step
  • 1 Post By 2 step
 
LinkBack Thread Tools Display Modes
post #1 of 21 Old 04-19-2017, 09:19 PM Thread Starter
Registered User
 
Trader Feedback: (4)
Join Date: Apr 2005
Location: Austin, Texas
Posts: 507
THE End-all intake gasket question

I've googled til I'm spinning and it is mostly older threads and people arguing SO, I figured I'd ask in the modern day. I ordered a couple sets and I need to know which one to send back.

FelPro 1250-S3

FelPro MS93334

I will probably run the rubber end gaskets and it seems the 1250S3 covers the water port and I don't feel like cutting up a brand new intake gasket to carve out the water ports.

The 93334 Looks to be a metal cored gasket and the water ports are open on it.

1994 Cobra with TrickFlow heads and stock Cobra intake.


1994 Cobra #2586 with 76K

Do NOT buy or sell anything to/from Badass01GT on here.
Austinbelair is online now  
Sponsored Links
Advertisement
 
post #2 of 21 Old 04-19-2017, 09:25 PM
Registered User
 
ToxicWaste's Avatar
 
Trader Feedback: (8)
Join Date: Mar 2014
Location: SE WI
Posts: 393
Considering you'd like to get information in the "modern day," you should know by now you'd toss the rubber bridge (or cork) in the trash bin post haste. Use Permatex's The Right Stuff and mound it up high. Make triple certain you've cleaned each mating surface back to new and smear silicone (thin) on ALL sides of the gaskets. I wouldn't suggest (others might) smearing The Right Stuff on the gaskets since it sets so fast and becomes hard.

Good Luck


88' GT 5spd, MAF Conv | All Supporting Mods | V2 SCi w/8 rib pulley set
08' TB3SS | Kooks LTs | Kooks OR/Y | K&N CAI | Dyno Tune
"Maintenance before Performance"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
ToxicWaste is offline  
post #3 of 21 Old 04-19-2017, 09:29 PM
Registered User
 
Trader Feedback: (3)
Join Date: Jan 2014
Location: ny
Posts: 1,160
Cutting out the water outlet port is common practice.

Not sure on the port size of the tf heads, but if it matches the 93334 gasket you can't go wrong either.

I used only this on my cylinder heads:
https://lmr.com/item/M9439A50/1979-9...arge-Intake-Po
kjb302ho is offline  
 
post #4 of 21 Old 04-19-2017, 11:35 PM
Registered User
 
Trader Feedback: (0)
Join Date: Aug 2015
Location: South Carolina coast
Posts: 168
The end gaskets (from either kit) are best fitted in the bottom of the nearest trash can.
See post one and two^^^
6sally6
6sally6 is offline  
post #5 of 21 Old 04-20-2017, 06:19 AM
Registered User
 
Trader Feedback: (3)
Join Date: Jan 2014
Location: ny
Posts: 1,160
The rubber ends work fine. Ford put those in from the factory. Ford didn't use silicone.

Doit this way you WILL NOT HAVE A PROBLEM.

Installing an Intake Manifold by Pro-M EFI
kjb302ho is offline  
post #6 of 21 Old 04-20-2017, 08:01 AM
Registered User
 
Trader Feedback: (8)
Join Date: Jun 2009
Location: south, us
Posts: 2,080
Have always used the silicone for end seals. Have put over 100k miles on a couple of them without ever having to remove intake manifold; nary a problem with the ends leaking. Rear main leaked on one but never the intake manifold.
toddturbo is offline  
post #7 of 21 Old 04-20-2017, 09:42 AM
Registered User
 
Trader Feedback: (4)
Join Date: Dec 2010
Location: Dallas/Houston
Posts: 1,032
I use 1262S3 on anything bigger than stock. It's metal cored. Used 5 sets in the past 2 years and they're always good to me. The Right Stuff for sealing the water ports and end rails.
5.0thunder is online now  
post #8 of 21 Old 04-20-2017, 10:18 AM
Registered User
 
ToxicWaste's Avatar
 
Trader Feedback: (8)
Join Date: Mar 2014
Location: SE WI
Posts: 393
Quote:
Originally Posted by kjb302ho View Post
The rubber ends work fine. Ford put those in from the factory. Ford didn't use silicone.

Doit this way you WILL NOT HAVE A PROBLEM.

Installing an Intake Manifold by Pro-M EFI
I know Ford used these from the factory, thus why I throw them in the garbage. I was a Ford tech doing heavy engine repair on these and we never used them as so many leaked. Am I saying every pair leaks? No. Do a lot leak? Yes. Most professionals would say you can go either way but never cork. I personally don't want to remove the lower again because I could've tossed the gaskets in the garbage. To each their own.

88' GT 5spd, MAF Conv | All Supporting Mods | V2 SCi w/8 rib pulley set
08' TB3SS | Kooks LTs | Kooks OR/Y | K&N CAI | Dyno Tune
"Maintenance before Performance"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
ToxicWaste is offline  
post #9 of 21 Old 04-20-2017, 02:37 PM
Registered User
 
Trader Feedback: (1)
Join Date: Feb 2008
Location: Fort Worth, TX
Posts: 352
With both a Trick Flow and a GT-40 lower, I have always used the silicone end gaskets from the Fel-Pro stock gasket set and I have never had one leak.
They have tabs to keep them in place and as long as you don't have mismachined lower/heads/block they are not going to leak.
Also, in the event you need to pull the lower anytime shortly thereafter (even multiple times), the silicone end gaskets will not need to be replaced.
90MarkVII is offline  
post #10 of 21 Old 04-21-2017, 09:22 AM
Registered User
 
tmoss's Avatar
 
Trader Feedback: (47)
Join Date: Feb 2001
Location: St Louis, MO
Posts: 10,215
Garage
the MS93334 gasket is a little smaller than your head port entrance but larger than your intake runners.


Tom Moss
2010 Shelby GT500 vert with 2.9L 16 psi Whipple and rim upgrade. Rated 750HP/713TQ - 673/620 to the tire

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
src="/forums/images/smilies/salute.gif" border="0" alt="" title="Salute" class="inlineimg" />http://tmoss.efidynotuning.com/
tmoss is online now  
post #11 of 21 Old 04-21-2017, 10:39 AM
Registered User
 
Trader Feedback: (3)
Join Date: Jan 2014
Location: ny
Posts: 1,160
Quote:
Originally Posted by ToxicWaste View Post
I know Ford used these from the factory, thus why I throw them in the garbage. I was a Ford tech doing heavy engine repair on these and we never used them as so many leaked. Am I saying every pair leaks? No. Do a lot leak? Yes. Most professionals would say you can go either way but never cork. I personally don't want to remove the lower again because I could've tossed the gaskets in the garbage. To each their own.
If done correctly, it won't leak. Everyone has a different method.

Isn't "Ford Tech" an oxymoron?
kjb302ho is offline  
post #12 of 21 Old 04-21-2017, 01:35 PM
Registered User
 
ToxicWaste's Avatar
 
Trader Feedback: (8)
Join Date: Mar 2014
Location: SE WI
Posts: 393
Quote:
Originally Posted by kjb302ho View Post
If done correctly, it won't leak. Everyone has a different method.

Isn't "Ford Tech" an oxymoron?
Don't get too butt hurt after all, I did say: TO EACH THEIR OWN.

kjb302ho's oxymoron of the day: "That verbal contract isn't worth the paper it was written on." Just a bit of FORD TECH humor for you.

88' GT 5spd, MAF Conv | All Supporting Mods | V2 SCi w/8 rib pulley set
08' TB3SS | Kooks LTs | Kooks OR/Y | K&N CAI | Dyno Tune
"Maintenance before Performance"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
ToxicWaste is offline  
post #13 of 21 Old 04-21-2017, 02:08 PM
Registered User
 
Trader Feedback: (3)
Join Date: Jan 2014
Location: ny
Posts: 1,160
Just a little fun with words. I always get a chuckle when I hear people call themselves a ford tech. Like jiffy lube: lubrication specialists. Thanks for your concern about my ass. I appreciate it. Good looking out.
kjb302ho is offline  
post #14 of 21 Old 04-21-2017, 06:17 PM
Registered User
 
kb1982's Avatar
 
Trader Feedback: (1)
Join Date: Jan 2014
Location: kentucky
Posts: 199
So whats a good replacement for the 1262R? Anything out there in that size with a steel core?
kb1982 is offline  
post #15 of 21 Old 04-21-2017, 07:22 PM
Registered User
 
tmoss's Avatar
 
Trader Feedback: (47)
Join Date: Feb 2001
Location: St Louis, MO
Posts: 10,215
Garage
Fel Pro 1262s3 as well

Tom Moss
2010 Shelby GT500 vert with 2.9L 16 psi Whipple and rim upgrade. Rated 750HP/713TQ - 673/620 to the tire

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
src="/forums/images/smilies/salute.gif" border="0" alt="" title="Salute" class="inlineimg" />http://tmoss.efidynotuning.com/
tmoss is online now  
post #16 of 21 Old 04-21-2017, 11:39 PM
Registered User
 
thunderjet302's Avatar
 
Trader Feedback: (5)
Join Date: Jun 2014
Location: Chicago
Posts: 917
Garage
I always use the blue rubber end seals. I put a dab of Ultra Black RTV in the corners where the end gaskets meet the intake gaskets, put the rubber end seal down, and put another dab of RTV at the end seal to intake gasket meeting point. That's what the Fel-Pro instructions call for and it works like a charm.

'88 Thunderbird LX: 306, Performer heads, Comp 266HR cam, Performer RPM intake, Edelbrock 70mm TB, 76mm C&L MAF, 30lb injectors, 2.5" exhaust, AOD with 2800 PI converter, 8.8 with 3.73 gears, 31 spline Traction-Lok, 31 spline Moser axles. '11 Focus, '12 Mustang 3.7, '17 Accord EX-L V6
thunderjet302 is offline  
post #17 of 21 Old 04-21-2017, 11:59 PM
Registered User
 
Trader Feedback: (0)
Join Date: Jun 2016
Location: Columbus, Ohio
Posts: 134
Cometics?
2 step is offline  
post #18 of 21 Old 04-22-2017, 12:42 AM
Registered User
 
Cougar5.O's Avatar
 
Trader Feedback: (7)
Join Date: Jan 2000
Location: Manchester, NH
Posts: 3,476
Garage
Quote:
Originally Posted by thunderjet302 View Post
I always use the blue rubber end seals. I put a dab of Ultra Black RTV in the corners where the end gaskets meet the intake gaskets, put the rubber end seal down, and put another dab of RTV at the end seal to intake gasket meeting point. That's what the Fel-Pro instructions call for and it works like a charm.
Agree. I've had my blue silicone end seals for years, I just wish they made them in the 9.5" deck width!

'87 20th Anniversary Cougar - 427W coming soon

2012 GT500
Cougar5.O is offline  
post #19 of 21 Old 04-24-2017, 03:13 PM
Registered User
 
S351Saleen77's Avatar
 
Trader Feedback: (5)
Join Date: Jun 2009
Location: Washington
Posts: 93
I need the bigger 1262 port size 2.1"x1.28". I have read the 1262S3 steel core has huge water ports? and they stick out?

I wanted to use the Victor Reinz 95197SG but can't find anyone who sells them?

Anyone used the Cometics intake gaskets with Aramid fiber? Summit shows these won't ship until the middle of May. Would these be a better alternative than the Fel Pro's?

Anyone else make a good gasket in this size thats not just a paper gasket? I heard the Edelbrocks are just paper even though they claim they are not?

1995 S351 Saleen #77- Nov.03 5.0 & Jan.17 MM&FF
1995 S351 Saleen #58- 14" Alcons
1993 Saleen #82, last of 6 Calypso's featured in MM&FF
2002 Saleen, 1994 Nemesis, 1967 Fastback
S351Saleen77 is offline  
post #20 of 21 Old 04-24-2017, 06:19 PM
Registered User
 
Trader Feedback: (0)
Join Date: Jun 2016
Location: Columbus, Ohio
Posts: 134
I have used the Cometics plenty. Best one out there. The right stuff makes the best end seals also. With all the different head gasket thickness, heads, and manifolds out there, and the way they stack, I cant imagine taking a risk of a silicon end seal.
S351Saleen77 likes this.
2 step is offline  
post #21 of 21 Old Yesterday, 09:27 AM
Registered User
 
S351Saleen77's Avatar
 
Trader Feedback: (5)
Join Date: Jun 2009
Location: Washington
Posts: 93
Quote:
Originally Posted by 2 step View Post
I have used the Cometics plenty. Best one out there. The right stuff makes the best end seals also. With all the different head gasket thickness, heads, and manifolds out there, and the way they stack, I cant imagine taking a risk of a silicon end seal.
Thanks for the info! I think Cometics it is!
S351Saleen77 is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome