S2000 Under The Hood S2000 Technical and Mechanical discussions.

spark plug hole is stripped

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Old 02-02-2010, 09:10 PM
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Default spark plug hole is stripped

hey i have a 2000 s with 37k on it just wanted to know if any one has ever had this issue a stripped spark plug hole. i had a problem with this like four months a go.now it is totally stripped some pepole have said helicoil and others say not to what do i do. i want to go supercharged someday so will this helicoil work with boost. or just go and get a new head o ya and by the way i am having all the work done at the local honda dealer.


thank
Old 02-02-2010, 10:28 PM
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if you can pick up a head cheap, do so. you're gonna have to remove the head to helicoil it anyway... (so foreign particles wont get into cylinder)
Old 02-03-2010, 05:09 AM
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I blew a sparkplug out of the head, taking some threads with it.

Helicoiled as a temp fix.

You DON'T want to do this. The plug won't seat perfectly and will be at a different height in the combustion chamber. Plus, if you're SC, you'll have to replace plugs more frequently anyway. The helicoil won't hold up.

Save yourself the headache and buy a used head for under $500.
Have the dealership upgrade the retainers to AP2 (if an AP1 head).
Old 02-03-2010, 06:13 AM
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A machine shop can repair it. They will install a threaded insert that was designed for this, not a heilcoil. It is solid where the heilcoil is not.
Old 02-03-2010, 06:18 AM
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option A is a used head.

Instead of a cheap helicoil u can fix it witha durable TIMESERT

there's a special package for sparkplug holes

www.timesert.com
Old 02-03-2010, 06:25 AM
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I thought there was a tool you can use to rethread a stripped hole, but it can only be done once?
Old 02-03-2010, 09:22 AM
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I would think a timesert would be better for an iron head. Expansion of aluminum might be tricky.

Having a machine shop rework the head might be cheaper by a few hundred, but I think the peace-of-mind of a new (used) head would be worth it.
Old 02-03-2010, 09:32 AM
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https://www.s2ki.com/forums/index.ph...f=107&t=746025

I've got a like new cylinder head for sale
Old 02-03-2010, 09:37 AM
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Originally Posted by CKit,Feb 3 2010, 08:22 PM
I would think a timesert would be better for an iron head. Expansion of aluminum might be tricky.
No, there are Timesert inserts that are for aluminium use.
I have done this twice on 2 S2000 heads. One engine is N/A tuned and used for racetracks - no problems!

Please don't use Helicoil!! Timesert is completly different and much more reliable.
Old 02-03-2010, 10:41 AM
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Thanks for the info. I have my old head lying around, still...


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