snapped a bolt off in the block....help!!!! - Team Camaro Tech
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post #1 of 8 (permalink) Old May 5th, 01, 07:56 AM Thread Starter
 
Join Date: Apr 2001
Posts: 9
Angry

the guy i got my z from broke one of the bolts off for the fuel pump mounting plate.
i did not realize this 'till my fuel pump went out. now i have a bad oil leak.
how do i fix this??
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post #2 of 8 (permalink) Old May 5th, 01, 08:24 AM
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chris
 
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Location: pittsfield NH
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i am not the best at this stuf but you could drill out the center with a revers cut bit this usaly spins them out.
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post #3 of 8 (permalink) Old May 5th, 01, 08:35 AM
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Location: New York
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If it will not come out with a reverse bit or an easy out. A trick (if you have acces to a MIG welder) is to weld a larger nut to the broken bolt. If it's a 3/8" bolt, use a 7/16" or 1/2" nut so you can get the MIG in there to weld it. The heat of welding will help loosen it up, just let it cool and it should spin right out with a wrench.

It may be a little hard to do that in the car, but no harder than trying to dril a straight hole while leaning over the fender.

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post #4 of 8 (permalink) Old May 5th, 01, 10:12 AM
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Eric
 
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I've used Helicoil with pretty good luck - but usually for stripped threads. You could drill the broken one with the drill bit that comes in the helicoil kit - then tap new threads and insert the coil.
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post #5 of 8 (permalink) Old May 5th, 01, 11:26 AM
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Brian
 
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Location: Ontario, Canada
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If my memory serves me right, the fuel pump bolts are hardened bolts. They may not be too easy to drill out. I would try the weld trick before you start trying to drill.

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post #6 of 8 (permalink) Old May 5th, 01, 03:11 PM
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Dale
 
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Location: Glendale,AZ.U.S.A.
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I use the welding trick all the time,at the shop,works very well.I've given up on easy outs,never,never,NEVER,break an easy out,not a good day!

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post #7 of 8 (permalink) Old May 5th, 01, 06:39 PM
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frank
 
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Working on that mounting plate is not going to be a easy thing to do just because of where it is. If the bolt is broke flush or recessed below the surface its going to be one hell of a trick to weld a nut on it. If it is broke flush take a sharp center punch and try and get a good hit as close to center as you can. If you have to drill it you will need an angle drill anyway, a good sharp twist drill will cut a Gr.8 bolt easily. Every once in a while you get lucky and you can "chase" the bolt with a small chisel or punch. Good luck.
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post #8 of 8 (permalink) Old May 6th, 01, 06:28 AM
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Freddie
 
Join Date: Feb 2000
Location: Central City, Ky.
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You can weld a flat washer to the bolt first. It is easier to get a good weld on the bolt like this. Then weld a nut around the outside of the washer. This almost always works for me. Drilling usually results in damaged threads.

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