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may have ruined balancer bolt hole threads... need suggestions.

  • Thread starter Thread starter Foxfan88
  • Start date Start date Mar 9, 2008

Foxfan88

My Grandpa has great wood.
Sep 13, 2004
2,487
4
0
Miami, Ok
Mar 9, 2008
#1
  • Mar 9, 2008
  • #1
i think i screwed up the threads in the front of the crankshaft. i think i have heard of a repair kit for this? anyone heard of it and where can i get one. i would hate to pull the engine out if i dont have to. i am going to try and retap the hole and see if it will work again.
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
Jul 6, 2006
5,232
2,652
223
gainesville
Mar 9, 2008
#2
  • Mar 9, 2008
  • #2
I had to re-tap mine and it came out ok. I was also told by one of the machinists where I work that a heli-coil(did I spell that right) would work as well.
 

stang&2Birds

Founding Member
May 4, 2000
2,091
5
58
New England. :-) CT/MA
Mar 9, 2008
#3
  • Mar 9, 2008
  • #3
I'm not sure of the torque rating for the different types of "heli-coils".

Heli-Coil Install. Olds Quad 4 head example.
http://www.veryuseful.com/GM/tech/heliCoilInstall/
 

Maryland Stang

Active Member
Aug 21, 2002
1,656
30
39
Greenville, NC
Mar 10, 2008
#4
  • Mar 10, 2008
  • #4
If you can find a bigger bolt that will work then just retap the crank. If you can't then you will have to heli-coil it.
 

Foxfan88

My Grandpa has great wood.
Sep 13, 2004
2,487
4
0
Miami, Ok
Mar 10, 2008
#5
  • Mar 10, 2008
  • #5
i blew the hole out, got all the trash out and ran a tap in it and it cleaned it up. ran a bolt in and it seems to thread in and out good. it feels like it will hold torque.

i am going to make a tool to install the balancer without the bolt.
i was stupid and always used the bolt to draw in the balancer, which may have been my problem. i will get the balancer completely on and then thread the bolt in.

i guess i made it out lucky lol would have sucked.
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
Jul 6, 2006
5,232
2,652
223
gainesville
Mar 10, 2008
#6
  • Mar 10, 2008
  • #6
glad you got it fixed. it would suck to have to get a new crank
 
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