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 Spark plug hole thread repair.
#733721
06/27/06 03:02 AM
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Joined: May 2005
Posts: 475
OP
Mudrunner
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So I picked up a new to me, non running, 87 Turbo truck that needs some work.
First thing on the list was to fix the PO's botched head gasket job. Hydro-locked bolts were the culprit.
Oupon removing the head I saw that the #2 spark plug hole has a heli coil in it. Now, i've used these with some sucess before but i'm wondering if I should have it welded shut and tapped out, or leave it alone. I have another good turbo head on a spare motor if I need it, so thats an option too.
Any thoughts on this or experiences revealed would be great.
Thanks
"If you can't learn to do something well, learn to enjoy doing it poorly".
85 22RE, 5spd 4Runner project
87 Turbo Truck, Boost Controller, otherwise stock... for now.
86 Turbo 4Runner, Project
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 Re: Spark plug hole thread repair.
[Re: sindersblue]
#733722
06/27/06 03:15 AM
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Joined: Oct 2005
Posts: 392
Mudrunner
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I have heard that time-serts ( www.timesert.com ) wrok very well. I have never used them though
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Re: Spark plug hole thread repair.
[Re: sindersblue]
#733723
06/27/06 04:44 AM
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Joined: May 2006
Posts: 77
Getting the Wheeling Fever
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Once you use a timesert, you'll realize just how crappy helicoils are. I used to run a foreign-car-only machine shop, and that's all we ever used. After getting used to them, and then having nothing but a helicoil (after I quit), I swear I'll never use anything else. However, if your hole is already tapped for helicoil, you may be commited to helicoil, or welding, like you said.
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Re: Spark plug hole thread repair.
[Re: atoyot]
#733724
06/27/06 04:52 AM
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Joined: May 2006
Posts: 77
Getting the Wheeling Fever
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After reading my post, I thought it may be unclear as to which insert i've used--- Timesert. I just checked out Timesert.com, and i remembered something else- When you're done installing a timesert, if it's done properly, you have the feeling of a quality repair; it looks and feels good. I DID NOT have that same sense of security when I installed a helicoil!
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Re: Spark plug hole thread repair.
[Re: atoyot]
#733725
06/27/06 08:00 AM
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Joined: Jan 2005
Posts: 178
Wheeler
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I remember seeing something like this in an issue of FOUR WHEELER about 2 or three months ago. If youre a reader thumb through the tech questions from those issues.
89 K5 Blazer,TBI 350, 700R4, 6" lift, 40" groundhawgs,3/4 ton 14 bolt rear, 3/4 ton 10 bolt front, 4.88:1 Gears
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Re: Spark plug hole thread repair.
[Re: 4mudder]
#733726
06/27/06 12:54 PM
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Joined: Jan 2006
Posts: 188
Wheeler
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go to chromate industries web site, they have these inserts called permaserts. i just used one on a head bolt, it worked awsome! very easy to work with too! they also sold me a drill bit and tap to do the job, they were both very high quality pieces. the bit went through cast iron like it was wood!
22RE OWNERS CHECK FOR DEBRIS IN YOUR OIL PANS! YOU MIGHT SAVE YOUR MOTOR!*** 1989 Toyota pickup 22re 5spd 4wd *** * New mods * - 305/70/R16 (33X12.5)
- 2 in suspention lift (zuk coils)
- minor body work
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Re: Spark plug hole thread repair.
[Re: ToYPU]
#733727
06/28/06 03:12 AM
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Joined: May 2005
Posts: 475
OP
Mudrunner
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Thanks for the input all! That Timesert looks great, though I think i'm stuck with the Heli coil. The head is going out to my machinist tomorow for a check and deck. If it passes i'll just put it back on and hope for the best. Thanks again; Dan <img src="/forums/images/graemlins/cheers.gif" alt="" />
"If you can't learn to do something well, learn to enjoy doing it poorly".
85 22RE, 5spd 4Runner project
87 Turbo Truck, Boost Controller, otherwise stock... for now.
86 Turbo 4Runner, Project
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