broken dist bolt 90 L98
Thread Starter
Intermediate
Joined: Sep 2011
Posts: 29
Likes: 0
broken dist bolt 90 L98
I have a 90 L 98 and the bolt for dist hold down was frozen and twisted off.
looking for any good ideas before I drill and tap for new larger bolt.
I am going to try to do this without pulling the intake.
thanks for any and all replies.
calicokid
looking for any good ideas before I drill and tap for new larger bolt.
I am going to try to do this without pulling the intake.
thanks for any and all replies.
calicokid
Race Director
Joined: Dec 2006
Posts: 10,383
Likes: 4
Last edited by 94z07fx3; Dec 1, 2013 at 06:56 AM.
Race Director
Joined: Jan 2000
Posts: 16,489
Likes: 25
From: USA. Northern Virginia
If you can grab it with a vise grip try that first. Soak it down with PB blaster before you begin.
If you tap it and remove it, just take your time. Purchase a high quality kit for the job. There is not a lot of material in that area of the block.
If you tap it and remove it, just take your time. Purchase a high quality kit for the job. There is not a lot of material in that area of the block.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
If nothing above works, then your best bet is probably to drill and tap it... At least its not holding anything that requires alot of pressure or that will leak when your finished. It's also fairly easy to get to and if the bolt doesn't fit through the part that clamps the distributor you can always drill that to fit the bolt.Just be careful not to go through the bottom of the intake.......
..WW
..WW
Last edited by WW7; Dec 1, 2013 at 08:00 AM.
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
I believe you could build a dam around it and then add whatever penetrating fluid you choose and walk away from it for a couple hours, refill the penetrating fluid a couple times and the next attempt should be the next day. Center-punch it and make your first drill 1/8 or smaller. Work up until you can get an extractor in it and good luck. If you have access to air and an air-chisel you could buy a "blank bit" or small diameter "smoothing tip" and give it a few jolts with low air power before, during and after the soaking.
I don't believe there's enough material there to allow an "over-bore" and a larger threaded fastener.
The distributor hold down aspect is part of the intake and NOT the block.
I don't believe there's enough material there to allow an "over-bore" and a larger threaded fastener.
The distributor hold down aspect is part of the intake and NOT the block.
Last edited by WVZR-1; Dec 1, 2013 at 10:13 AM.
Melting Slicks
Joined: Sep 2008
Posts: 2,376
Likes: 111
From: Cherokee National Forest TN
After years of repairing aluminum out drives on salt water boats I would be willing to bet the farm that your dist bolt will not come out of the manifold. Bolts stuck in aluminum either break off or if the bolt is larger in diameter it will strip the threads out of its mount = heli coil time.
For this application suggest drilling & tapping for a 5/16-18 NC bolt.
For this application suggest drilling & tapping for a 5/16-18 NC bolt.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
After years of repairing aluminum out drives on salt water boats I would be willing to bet the farm that your dist bolt will not come out of the manifold. Bolts stuck in aluminum either break off or if the bolt is larger in diameter it will strip the threads out of its mount = heli coil time.
For this application suggest drilling & tapping for a 5/16-18 NC bolt.
For this application suggest drilling & tapping for a 5/16-18 NC bolt.
good idea, if extraction doesn't work, then he can use a bolt about, or at the same size....WW
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Safety Car
Joined: Aug 2013
Posts: 4,429
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From: Minneapolis Mn
Stuck bolt
Didn't see this till now. Here's some info that may help the next person. For a penetrant, try mixing 50-50 ATF and Acetone. It works as well as the best of the penetrating oils. Another is consider getting a set of left twist drill bits. With luck, it may grab and back out the bolt if you drill slow enough, worst you drill through it.
