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intake manifold gasket with cracks 900 1994

posted by Volvo945 on Tue Dec 27 18:15 CST 2011
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last visit: Sat Oct 12 15:05 CST 2013

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As I posted earlier the 944T is idling at 2K RPM. It was suggested I look for air leaks. Examining the intake manifold unions with the head and I see the new gasket (9 months old, aftermarket from FCP) is cracked in ports 1 through 3! I'll pull the manifold off tomorrow to see if the cracks extend into the chamber and to renew it, probably with OEM. Right now these cracks are prime suspects to my starting and idling issue.

So did I overtorque the manifold to cause these types of cracks? I don't know if you can see from the pic but the gasket appears to be splayed outwards.

What is the torque spec on the intake manifold? I can't seem to find it listed in various reference sources. Is there a tightening sequence I should follow?

Thanks for all wisdom shared!
Doug
--
'94 945t; '95 854 base; '05 S80 2.5T

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intake manifold gasket with cracks 900 1994

posted by HillBilly on Wed Dec 28 11:45 CST 2011
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last visit: Thu Oct 16 08:26 CST 2014

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Was all of the old gasket completely removed from the mating surfaces when the gasket was changed previously?

steve

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intake manifold gasket with cracks 900 1994

posted by Volvo945 on Wed Dec 28 12:26 CST 2011
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Yes, the head was a reman from Clearwater so that surface was like new. The manifold was nice and clean too.

See my other reply to Art for a picture of the complete gasket after manifold removed.

thx
--
'94 945t; '94 944t; '05 S80 2.5t; '01 S40t

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intake manifold gasket with cracks 900 1994

posted by Hovonogila on Wed Dec 28 09:21 CST 2011
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last visit: Mon Sep 22 20:53 CST 2014

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The original Volvo intake manifold gasket is significantly superior to the aftermarket or 'OEM' style. Go get one. You'll see.
--
I'm stuck on Volvo and Volvo's stuck on me....

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intake manifold gasket with cracks 900 1994

posted by Art Benstein on Tue Dec 27 18:30 CST 2011
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last visit: Fri Oct 17 20:10 CST 2014

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This is an intake manifold gasket with cracks.

I'd suggest 15 foot pounds starting with the middle runners and torquing toward the outer runners in stages. Gasket torques are a feel thing, and the squishiness of the gasket its a big variable.

"It was suggested I look for air leaks." Whoever made that suggestion was a brilliant person; a legend in his own mind. One thing. Are you posting about a sedan or a wagon? Conflicting sig/screen name/post contents? Makes a big difference on a idling problem, of course, especially if the paint is metallic. _smile_
--
Art Benstein near Baltimore

"People love to admit they have bad handwriting or that they can't do math. And they will readily admit to being awkward: 'I'm such a klutz!' But they will never admit to having a poor sense of humor or being a bad driver." --allegedly George Carlin

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intake manifold gasket with cracks 900 1994

posted by Volvo945 on Wed Dec 28 12:23 CST 2011
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last visit: Sat Oct 12 15:05 CST 2013

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Art: I think I can top that photo of yours!

Cracks on every intake. So what do you think? Over-torqued or POS gasket? This gasket went on the car in April. I sure hope the head gasket I put on at the same time holds up better than this.....

Local dealer will have a new gasket for me tomorrow.
--
'94 945t; '94 944t; '05 S80 2.5t; '01 S40t

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intake manifold gasket with cracks 900 1994

posted by Volvo945 on Tue Dec 27 19:21 CST 2011
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Yes, Art, it was you that said "follow the air", or something like that. So this is where that has led....

As to my sig, I've tried to correct it for several years here on BB and it never "takes". I tried it again a few minutes ago, so we'll see when this posts if you see what's currently in the fleet. I have 2 940T from '94, a wagon and a sedan. I've had the wagon since '99. The 4 door is relatively new to me, just 2 1/2 years now. It's my teen-age son's "starter" car. As luck would have it the cars were built in the same month (9/93). Wagon has EGR and the sedan doesn't not sure why.....
--
'94 945t; '94 944t; '05 S80 2.5t; '01 S40t

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