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Post Info TOPIC: intake manifold bolt sequence


PETERBOROUGH, ONT

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intake manifold bolt sequence
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Well installing a new intake manifold is a long way off but I like to plan way ahead so I started researching and discovered al different bolt sequences for replacing the bolts when putting the manifold back on.  I looked and found one that shows "Intake Torque Sequence for Small Block Fords".  I copied it out and thought I better double check with other sources and they all differed.  Then I discovered that even the torque differs.  Some said 1st go to 10, the 20, then 20 again to be safe.  The next said go to 30 lbs ft..  So I figured I better come here and get the straight facts and know I am doing it the right way.



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ALLAN PARK, ONT ADMINISTRATOR

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I think you are overthinking this.....Basically, just like a cylinder head, the sequence is from the centre out. The steps, take your spec, go 1/3, 2/3 and then the full amount

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PETERBOROUGH, ONT

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Thank you Poncho62. Maybe I was overthinking but I've never removed an intake manifold and I want to do it right the first time. I thought I better ask where I get the right answers.

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ONTARIO

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Just out of curiosity Cuddles, why are you pulling it?

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PETERBOROUGH, ONT

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I have a new Edelbrock intake and 3 Stromberg 97s but like I say, I've never done this before and this seems like serious work. I don't want to screw this up. I can do screw up really well !

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ONTARIO

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Nope, Poncho is right. It's straight forward. One suggestion , once all the gasket surfaces are clean I like to use a 3M adhesive to glue the front and rear gaskets in place atop the block. Then when I install the intake a little Sealer on top each gasket makes things easy and leak free.


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PRINCE EDWARD COUNTY, ONT

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Go get a tube or two of Permatex Right Stuff. Apply a small but continuous bead to the heads including around each bolt, install the gaskets using a couple of bolts to keep them aligned, apply another fine bead to the gasket, again around each intake and water port and around each bolt . Install the manifold and torque to about 10-12 lbs and let set up. The next day torque to final specs of 20 lbs. The sealant will have formed a compressible rubber bond that will seal against any vacuum leaks.

Warren

ps: if you have any small oil leaks in your tranny or rear end, add a bottle of Blue Devil. Available at CTC. Works wonders.

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PETERBOROUGH, ONT

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Thank you. When the time comes and I'm feeling brave enough, I will follow your instructions to the letter. I wouldn't attempt this without your guidance. Thank you both.

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Member

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No one is wrong but everyone is different.

I dislike sealant but use black weatherstrip glue on the gasket to the cyl head.

The "China Wall" gaskets can be problematic so I just use silicone there, no gasket.

I'm overly fussy on torquing and go 5-10-15-20

After a few run cycles I recheck bolt torque.

Best of luck!!

Thanks
Randy



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Sherwood Park, Alberta Canada

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