Bottom of Fast 90 intake cracked??
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From: Northwest side of Chicago
Fixed mine up today. Im a huge idiot because i found the bolts in my old garage. I couldnt see any cracked on the bottom. But i took a boroscope to the inside and there were 3 good size cracks. Not sure if that was causing a vacum leak. The car seems to drive pretty much the same as before. Little less idle hang. Also did the ls6 pcv valley while i had it off. Alls good thanks for all the help.
Originally Posted by SPRAYED 01
But i took a boroscope to the inside and there were 3 good size cracks.
Teching In
Joined: Jul 2006
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From: England- UK!
Originally Posted by HEMIETR
Its only a $400 mistake.
Big ol crack between the last two ports! had to go back to stock for the time being till my new bottom part arrives!
Is there anyway that they can be fixed?
Teching In
Joined: Jul 2006
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From: England- UK!
Originally Posted by brad8266
JB Wels FTW!!! 
I would replace the lower intake though if i broke mine.
I would replace the lower intake though if i broke mine.
Well ive already ordered one, just have no idea how long its going to take to get here so was thinking of trying to fix it for use in the mean time.
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10 Second Club
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From: Northwest side of Chicago
Im not sure on the boroscope i used. We just got it in at my shop. I know its about 4k and has its own 8inch screen tv monitor. I see nothing wrong with fixing the cracks. It worked out really well. Im glad i didnt spend 400 on a new bottom.
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Originally Posted by brad8266
true i just tighten by hand,but my hand is like a torque wrench now, lol. You dotn need to torque them perfect buy if you over due them you can strip out the blocks threads. That goes for any bolt hole in the aluminum block.
Now that I think of it though, I only had the FAST instructions handy and there were no specific torque specs for those so I just tightened them in a star pattern.
Well Mine im sure is cracked as well, now that I read this, so Ill be sure to post some pictures and let you know what it looks like after a real man has done the install without reading instructions.
Edit: Went out to the garage & pulled the intake off, sure enough you can see the indentions of the bolt heads, although I don't see cracks. Hopefully I lucked out! I will be picking up the button head bolts first thing tomorrow!
Sorry to bring up this thread from the dead, but I bought my 90 in 2004 and it didn't come with any buttonhead hardware. I haven't pulled the intake off yet to check it, but I just tightened the intake by hand, hoping mine isn't cracked!!! Anyone have a pic of one with cracks & where I should look? Thanks!!!
Sorry to bring up this thread from the dead, but I bought my 90 in 2004 and it didn't come with any buttonhead hardware. I haven't pulled the intake off yet to check it, but I just tightened the intake by hand, hoping mine isn't cracked!!! Anyone have a pic of one with cracks & where I should look? Thanks!!!
Last edited by 55LS1; Feb 16, 2008 at 10:51 PM.
