 Longevity/reliability of a "sleeved" helicoil timesert spark plug hole |
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| nditiz1 |
 Jan 21 2025, 06:08 PM
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Senior Member  Group: Members Posts: 1,238 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region 
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I recently acquired a 912e aka 2.0 Ljet. I was told it was running up until the point the 912e was disassembled. I find it very hard to believe when spark plug #4 hole does not thread a m14 spark plug. I will check an m16 bolt tomorrow when the hardware store opens as that is close to what I get with a micrometer. Now the hole is threaded. If I can get a m16 -> m14 reducer how well will it hold up? Should I only use a helicoil or even a timesert? OR if it does accept m16, get a studebaker m16 spark plug and gap accordingly?
Thanks all!  |
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| Montreal914 |
Jan 21 2025, 07:56 PM
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Senior Member Group: Members Posts: 1,818 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California
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Knowing how the stock 2liter heads all crack here (picture) I would highly doubt with the reduced wall created by that insert your head wouldn't be cracked...
If once removed the heads are worthy of rebuild, I would seriously consider having them welded and drilled for 12mm plugs in hopes of avoiding future cracks.  |
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Posts in this topic
nditiz1 Longevity/reliability of a "sleeved" helicoil timesert spark plug hole Jan 21 2025, 06:08 PM
technicalninja Sorry, I think you're TOAST!
Looks like a... Jan 21 2025, 06:17 PM Chad911sc When I presently pulled my 2.0 apart, all 4 spark ... Jan 28 2025, 04:14 PM technicalninja I recycle anything aluminum...
Now, when I go, I... Jan 28 2025, 04:32 PM
Artfrombama FWIW;
I was told many years ago by an old VW mecha... Jan 28 2025, 08:04 PM |
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