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NEED HELP ASAP...Upper Intake manifold


AWeb80

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I'm replacing the upper intake manifold and my stupid Haynes manual doesn't tell me crap.

 

What is the tq settings for the manifold bolts and such.

 

also, is there any other input in doing this, i've got new gaskets btw.....

 

I'm doin this in an hour, so i need answers asap.

 

Thanks.

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I thought i read 11ft/lbs when I did mine.... but I may not be remembering correctly. It's not very tight anyways, I don't think you can screw it up unless you severely overtighten them.

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GM service manual says 18ft.lbs. but idealy you want them all to be the same tq. After all thats why most gaskets leak, because of inproper tq. on the bolts. But yeah just dont be crazy with em if you dont have a tq. wrench

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jeez this thing is a bitch....one of the damn bolt holes that holds the ICM plate to the plenum is stripped....so now i've only got one bolt in there instead of two....this blows.....i'm soooo pissed right now....

 

this is takin longer than it should ever have to.....so much shit you have to take out of the way....

 

egr shit

alt brackets

pcv shit

throttle cable shit

 

ugh, screw it, i'll finish it tomarrow

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use some threadlock on those bolts through the LIM and follow the tq sequence as well. dont overtighten them whatever you do, and get some good RTV for the valley ends.

 

best stuff to use for rtv is gm pn# 12346141 and I think 12378592 for the threadlock. others will do, but the GM rtv is way better than permatex.

 

good luck man its a dirty job, make sure to clean the surfaces real well and clean them with brake clean or something after you clean the gasket material off.

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What are you doing... painting it?

 

Yeah.. it is a pain in the ass, more then you would think! LOL

 

 

Kenny painted one for me and i'm swappin it on.....

 

It was really not worth it....this sucks...still got another hour of work....gotta put all the pcv crap back, the throttle body on, acc. belt on, throttle cables on, egr on intake on.....geez

 

 

 

well, the good news is I got a Vert STB for $5.

 

gonna strip it and PC it gloss black....

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The plenum is nothing compared to doing the full LIM! LOLOL!!

 

haha!! omg that was a PITA!!!!!!!!!!!

 

yeah i know....I helped 95aquase fix his coolant leak from the LIM.....that sucked

 

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why did you take the alt bracket and belt off?

 

The only thing I find a pain in the ass is getting the wiring in the right spot between the alt and ignition, and also the EGR can be a little tricky with the pipe. Otherwise it really isn't that bad. I normally unbolt the throttle body and remove the 2 upper cable bracket bolts and set the whole thing aside as a unit, cables connected.

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