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all stock
11-09-2006, 09:52 AM
Hey guys, I just rebuilt the head, and the FSM said torque it down to 48-61ft/lbs. So I did 60. Ended up stripping the threads in the head. Great.

I was thinking of a few options:

a. JB Weld, Weld the hole, i'll never remove it. I just rebuilt virtually the entire motor. If anything, i'll get a new engine

b. Helicoil, this would probably be the best option. if I do this, I don't wanna remove the head again. Is it possible w/o removing the head? I don't wanna buy another HG.

c. Buy a longer bolt. I'm going to have to check out a few places, but I have a good feeling I can get a longer bolt so I can thread it in further, utilizing the threads in the back.

I would prefer to do C. My questions are:
1. What pitch, size, thread is the bolt?
2. I'm probably going to go in a little bit further (1/2") than the threads available in the head. What's back there? How close do the intake/exhaust ports go? Does anyone have a diagram?
ManoNegra
11-09-2006, 09:58 AM
I would pick option b personally.
theicecreamdan
11-09-2006, 11:11 AM
For the future... remember that stuff threading into the head is threading into Aluminum, its soft, If you have a range of torque... stay in the middle.

option B
all stock
11-09-2006, 12:05 PM
what thread size and pitch is the bolt? i need to order the helicoil and i don't have it on me...i'm at work. anyone know?
IngS14
11-09-2006, 12:50 PM
you need this chain guide tensioner bolts like this right?........ http://cgi.ebay.com/ebaymotors/SR20DET-S13-S14-OEM-TIMING-CHAIN-GUIDE-RAILS-BOLTS_W0QQcmdZViewItemQQcategoryZ33625QQihZ011QQit emZ320035199434
all stock
11-09-2006, 03:51 PM
i need this bolt.
http://i24.photobucket.com/albums/c22/bboibteck/stripped240timingbolt.jpg
all stock
11-09-2006, 04:00 PM
can i reuse the HG? i JUST torqued it on. god damn PITA process. it hasn't been torqued on for longer than a day.
IngS14
11-09-2006, 04:49 PM
oh those are cam gear bolts,get them from local nissan dealer.
all stock
11-09-2006, 06:45 PM
they're upper timing chain bolts. the cam bolts are right above that. see the diagram. lol

gunna helicoil it on saturday. damn kit costs me 80.
GSXRJJordan
11-10-2006, 04:30 AM
I agree with your reasoning for option A, but then again, I've been burned by helicoils and have put together a buddies wrecked GSXR1000 engine case with JB Weld before :) Let us know if the helicoil goes smoothly ~
pr240sx
11-10-2006, 06:44 AM
I will go with the helicoil setup BUT will epoxy the insert.
That is not a common bolt, is a part where the idler sprocket runs
all stock
03-17-2007, 11:25 PM
helicoil went fine. threads stick out just a little bit, but nothing to be concerned with. motors gone 5k miles with 0 problems.
aznsquad
03-18-2007, 06:50 PM
helicoil went fine. threads stick out just a little bit, but nothing to be concerned with. motors gone 5k miles with 0 problems.

how much did you torque it to
infinitexsound
03-18-2007, 07:13 PM
just find another source engine at the junk yard and pull the parts....
all stock
03-19-2007, 09:19 AM
i hate people who don't read the whole post...problem has been solved.

i torqued it to the middle setting, around 5x. helicoil makes the threads stronger, so if it's not helicoiled, i'd probably do the lowest setting. lol
infinitexsound
03-19-2007, 08:02 PM
helicoil comes out sometimes just for ur info....