Hey guys, stripped a head bolt... can it be fixed?
 

For some reason, it pulled all of the threads out of the block... so now i have no real threads in the block, my question is have any of you guys tried a helicoil for a headbolt? It needs to be torqued to 72lb ft...

Re: Hey guys, stripped a head bolt... can it be fixed?
 

I wouldnt trust a Heli for that kind of abuse, as Ive pulled them back out with light duty app's. Best bet would be drill and re-tap, and find larger head studs

Re: Hey guys, stripped a head bolt... can it be fixed?
 

Well i have another engine, so its either i try to fix this engine or i put in the other one... Im basically asking if im wasting my time dealing with this. GODDAMN ALUMINUM THREADS

Re: Hey guys, stripped a head bolt... can it be fixed?
 

what about if u tapped out the hole got a larger stud from the hardware store? there would be one different on but ---- it if you can tap it out it should be cake.

Re: Hey guys, stripped a head bolt... can it be fixed?
 

retap and use bigger bolts

Re: Hey guys, stripped a head bolt... can it be fixed?
 

jbweld

Re: Hey guys, stripped a head bolt... can it be fixed?
 

yeah, that ---- sucks, and if you dont use the same headbolts on every one, it can cause the head to warp. So you would want to retap ALL of them. Helicoils suck, i tried it, and it didnt work. I could even get the thing to set in correctly. Use the new block, to much of a hassle, especially if your boosted and dont want to do it all over again.

Re: Hey guys, stripped a head bolt... can it be fixed?
 

K... yeah i think im prolly gonna pull the motor, it was overheated like a beeotch, really badly, the stock head was warped but the bottom end looked ok, but ALL the threads pulled out and were wrapped around the bolt when i was torquing it down (never seen anything like it before) and since the head warped straight up where this bolt is (was) im prolly gonna quit ------- with this block

Re: Hey guys, stripped a head bolt... can it be fixed?
 

I would retap and go with a bigger bolt or use a Timesert (like a helicoil but better). I helicoiled the three bolts on the rear transmission bracket mount on an L3 tranny (88-91 Civic cable tranny, obviously aluminium). I have had no problems with it yet and have had it running for 6 months. I am also afraid to take the bolts out... ??? :'(

Re: Hey guys, stripped a head bolt... can it be fixed?
 

anybody think of how well a bigger bolt/stud would fit?...and its not like you can just go get one from a hardware store, i doubt anyone really makes bigger sized ones for hondas

Re: Hey guys, stripped a head bolt... can it be fixed?
 

even if they did, chances are the strength/stretch/clamping force would be all different due to it being a different fastener, and thats a really critical place to have a different fastener :-\

Re: Hey guys, stripped a head bolt... can it be fixed?
 

well you would hope that not matter what, the other ones would not be stretching enough for it to matter...either way id helicoil it or get a new block (i guess you could have it welded and tapped but ive never seen/heard of that)