riser torque
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=27413
Printed Date: May-19-2024 at 7:31pm
Topic: riser torque
Posted By: john beck
Subject: riser torque
Date Posted: August-11-2012 at 2:23pm
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Help. I'm trying to find the torque spec. for 1992 PCM 351 riser bolts to exhaust manifold. Also, do I need to put any gausket sealer on the new gausket? Thanks
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Replies:
Posted By: 8122pbrainard
Date Posted: August-11-2012 at 3:50pm
John,
Welcome to CCfan. SAE torque specs of bolts are available on line. Are you putting SS bolts back in? It makes a difference.
OK, when it comes down to gasket compounds, I'm very old school. I do not like RTV's and always use Permatex non hardening. No matter what you use, the key to a good seal will be the mating surfaces MUST be flat and smooth. If not, they may even need a dust cut on the mill?
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/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete
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Posted By: john beck
Date Posted: August-12-2012 at 12:08am
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Thanks Pbrainard. I tried google sites looking for torque on the riser. What website would you recommend? Thanks again.
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Posted By: 8122pbrainard
Date Posted: August-12-2012 at 7:32am
John,
Google "SAE bolt torque". Also, you never said if you are using SS bolts. It's a good idea plus I recommend anti seize but understand that using it will alter your torque.
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/diaries/details.asp?ID=1622" rel="nofollow -
54 Atom
/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete
<
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Posted By: kapla
Date Posted: August-13-2012 at 12:43am
Definetely you want the mating surfaces to be REAL FLAT!...
any rust in the surface is a potencial leak point....
I speak from personal experience...new gaskets, cleaned the surface and assembled, hundred of hours later, found water in cylinder...it was the manifold leaking....
A head gasket and a trip to the machine shop, got me again in the water.
Definetley go SS bolts!..also replace the allen ones that hooks the lower manifold to the head...
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<a href="">1992 ski nautique
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