#2 bolt snapped on intake manifold!!
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Intermediate
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From: driftwood texas
#2 bolt snapped on intake manifold!!
while tighting down bolts #2 snapped leaving 2 threads on the bolt. I know i am pretty much screwed. started up engine and could not hear any leak.
would like advice from someone who has done this before and how they fixed the problem.
would like advice from someone who has done this before and how they fixed the problem.
Thread Starter
Intermediate
Joined: Dec 2009
Posts: 43
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From: driftwood texas
any ideals who sells the bolts and screw extractor. hopefully second time around will not be such a pita. Also any ideals to extend the little black tubing that attaches to the back of the intake.
Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
There not aluminum but are also not very rugged. What did you use to torque it down with and is it calibrated?
Ive had mine off a dozen times and never had an issue with them.
Recommend removing the manifold and extracting the broken bolts.
BC
Ive had mine off a dozen times and never had an issue with them.
Recommend removing the manifold and extracting the broken bolts.
BC
Thread Starter
Intermediate
Joined: Dec 2009
Posts: 43
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From: driftwood texas
definitely a wanna be mechanic, only changing oil in all of my cars over the years. but since I got the vette and found this forum have been doing small projects I would have never attempted in the past. I was using a torque wrench from Sears, after I had snugged the bolt with a socket. I put the torque wrench on the pounds reading was like 15#, my no mechanic *** kept turning the wrench several times thinking I would see 45# eventually.
Well then a loud pop and the bolt was toast.
Well then a loud pop and the bolt was toast.
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
If not, it shouldn't be tough to get it out with an "easy out"/screw extractor.
As far as the little black tubing goes...I just swapped mine out all the way down to the bottom of the little canister behind the fender with rubber hose..made it way easier, it's worked fine for a couple years and you can put in a little "stint" or just use a piece of rigid tubing with 2 hose clamps and then it's super easy to hook that thing back up if you ever have the intake off again.
Also, the first time I had my intake on/off..was for knock sensors. It took me like 3 hours.
I've had it off 5 or 6 times since and it's never taken more than an hour. For some reason, they're just tough the first time.
Did you see the tip about taping your back two bolts "up" in the bolt holes? So you can slide the intake back on to the heads and not have them falling down into the ports.. and if you don't have the fuel line removal tool the first time...that's always an extra parts store trip..lol
Team Owner
Joined: Mar 1999
Posts: 22,025
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From: At the beach in little Rhody
definitely a wanna be mechanic, only changing oil in all of my cars over the years. but since I got the vette and found this forum have been doing small projects I would have never attempted in the past. I was using a torque wrench from Sears, after I had snugged the bolt with a socket. I put the torque wrench on the pounds reading was like 15#, my no mechanic *** kept turning the wrench several times thinking I would see 45# eventually.
Well then a loud pop and the bolt was toast.
Well then a loud pop and the bolt was toast.
If you overtightened all the bolts, I would personally replace them all as they are all likely yielded at this point and could fail when you re-install them.
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Tech Contributor
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Tighten the intake manifold bolts. Tighten
Tighten the intake manifold bolts a first pass in sequence to 5 N·m (44 lb in).
Tighten the intake manifold bolts a final pass in sequence to 10 N·m (89 lb in).
You SURE you used INCH POUND torque wrench??
BC
Tighten the intake manifold bolts a first pass in sequence to 5 N·m (44 lb in).
Tighten the intake manifold bolts a final pass in sequence to 10 N·m (89 lb in).
You SURE you used INCH POUND torque wrench??
BC
Thread Starter
Intermediate
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From: driftwood texas
Team Owner
Joined: Mar 1999
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From: At the beach in little Rhody
You are applying a force through a distance, or moment arm. For 89 in-lb, you are applying 89 lbs with a 1" radius handle (obviously the wrench is longer so the actual force used is less). If you increase you handle length to 12", you only need to pull with 7.4 lbs to obtain the same value of torque. If you continue to increase the handle length, less force is required to obtain the same torque at the bolt. For example, if you increased the handle length to 89", you only would need to apply 1 lb of force. Each wrench is designed to work within a specified torque range and higher torque capability wrenches use lb-ft as the units.
Last edited by vettenuts; Jul 19, 2010 at 06:01 AM.
