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  QUESTION: Installing Intake Manifold Gasket

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Author Topic:   QUESTION: Installing Intake Manifold Gasket
Boss Hoss

Posts: 223
From: Georgia
Registered: Mar 2001

posted 04-18-2001 08:24 PM     Click Here to See the Profile for Boss Hoss   Click Here to Email Boss Hoss     Edit/Delete Message   Reply w/Quote
OK folks, I have narrowed down my vacuum leak problem on my '65 Mustang's 289. It seems to be a faulty seal between the intake manifold and the block/heads. I am going to do my first intake manifold gasket replacement VERY soon. Any tips/warnings/prayers you experienced folks would like to share to make my job easier? I am using a Fel-Pro gasket set, by the way.

*andy* ([email protected])

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Posts: 2983
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99

posted 04-18-2001 10:38 PM     Click Here to See the Profile for kcode   Click Here to Email kcode     Edit/Delete Message   Reply w/Quote
One trick that I've used for years, and I feel that is has been very successful in gasket alignment. The intake manifold bolts are 5/16-18 threads, get four extra long bolts at least three to four inches long and cut the heads off, or get some all thread rod. Once you have the intake gaskets in place, screw the headless bolts into the heads, two per side. This way you will have a guide to lower the intake manifold onto and the chances of sliding or moving a gasket is reduced. After the intake is lowered just unscrew the studs and replace with regular bolts. Good luck


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Posts: 209
From: Bay Area, Ca
Registered: Apr 2001

posted 04-19-2001 01:29 PM     Click Here to See the Profile for mvierow   Click Here to Email mvierow     Edit/Delete Message   Reply w/Quote
Whats your guys thoughts on the cork gaskets that bridge across the front and back of the block? Use 'em or toss em for just RTV?

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Posts: 865
From: Demopolis AL
Registered: Jun 99

posted 04-19-2001 01:50 PM     Click Here to See the Profile for 74merc   Click Here to Email 74merc     Edit/Delete Message   Reply w/Quote
well, considering last time I had to pull the intake to remove the leaking cork gasket, clean it and rtv the hell out of it...
you can guess my advice...
give yourself a decent amount of rtv, about a quarter inch thick in replacement of the cork, make sure its a smooth fit to the intake gaskets, let it get fairly hard before you put on the intake, but still sticky, say give it 30 minutes or so.
never had a problem when I've done that.
the damn cork, however, always leaks on mine...

[This message has been edited by 74merc (edited 04-19-2001).]

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R Rainwater

Posts: 521
From: Puxico,MO. USA
Registered: Jul 99

posted 04-19-2001 03:01 PM     Click Here to See the Profile for R Rainwater   Click Here to Email R Rainwater     Edit/Delete Message   Reply w/Quote
I agree, 74Merc.
Bob R.

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Posts: 93
From: Marietta,GA
Registered: Mar 2001

posted 04-19-2001 04:25 PM     Click Here to See the Profile for Tom351   Click Here to Email Tom351     Edit/Delete Message   Reply w/Quote
I agree Cork ends = leaks

67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Carter 750 CFM, Comp. Cam 477/510 219/[email protected], Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

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Posts: 8754
From: Sonoma,CA,USA
Registered: Mar 2000

posted 04-19-2001 04:37 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Me too! Use form-a-gasket and toss the cork (or rubber).


p.s. The studs work great for alignment.

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Posts: 38
From: reedsport, OR, USA
Registered: Jun 99

posted 04-19-2001 05:22 PM     Click Here to See the Profile for fsiewert   Click Here to Email fsiewert     Edit/Delete Message   Reply w/Quote
use super weatherstrip adhesive to hold the manifold to head gaskets in place. RTV in place of the cork end gaskets and torque in the proper sequence for a perfect seal. Good Luck, Fred.

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Posts: 1554
From: Jackson, TN
Registered: Sep 2000

posted 04-19-2001 05:45 PM     Click Here to See the Profile for bibbs68   Click Here to Email bibbs68     Edit/Delete Message   Reply w/Quote
I used the end cork on mine and have had no problems. I did use and adhesive between the block and cork gasket to hold it in place. Most leaks there occur because the gasket "sqeezes" out when torquing the intake down. Then I used a bead of Blue RTV between the cork and intake making sure to put extra at the four corners of the intake. Also, I had to trim my end cork gaskets to get a good fit before I installed them. Just my two cents

'68 Coupe 289ci w/ 4brl
M&M Member #685
MCA Member #49134
Help make the world a better place, drive a Ford!

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