Helicoils and PI heads
Senior Member
Joined: Jun 2001
Posts: 1,210
Likes: 6
From: Cave Creek, AZ
Vinnie,
Just admit that it was you who, in your pizza and beer induced stupor, cross-threaded the plug and then tried to hide your faux paus with a zip tie and chewing gum...all to no avail.
Just admit that it was you who, in your pizza and beer induced stupor, cross-threaded the plug and then tried to hide your faux paus with a zip tie and chewing gum...all to no avail.
Senior Member
Joined: Oct 2001
Posts: 6,353
Likes: 0
From: NEW JERSEY
Originally posted by Struck in AZ
Vinnie,
Just admit that it was you who, in your pizza and beer induced stupor, cross-threaded the plug and then tried to hide your faux paus with a zip tie and chewing gum...all to no avail.
Vinnie,
Just admit that it was you who, in your pizza and beer induced stupor, cross-threaded the plug and then tried to hide your faux paus with a zip tie and chewing gum...all to no avail.
I'm busted, but the pizza was good.
Senior Member
Joined: Jul 2000
Posts: 1,325
Likes: 0
From: Great Lake State
Originally posted by soap
Maybe ib fast will chime in here. Last year he had a few plugs helicoiled the day before we went to the track. He was running low 12's with gobs of boost and everything held together just fine.
--Joe
Maybe ib fast will chime in here. Last year he had a few plugs helicoiled the day before we went to the track. He was running low 12's with gobs of boost and everything held together just fine.
--Joe
Joe,just how much boost is gobs...is that like so much boost that you may as well run a flame thrower through your motor?
Senior Member
Joined: Oct 1999
Posts: 4,565
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From: NJ
Originally posted by Silver-Bolt
Nope you still only have 4 threads. The plug will thread into to more threads but the solid insert (OD) will only have 4 threads of engagement. A wire insert disburses the torque stress across all threads of engagement a solid insert does not. ...
Nope you still only have 4 threads. The plug will thread into to more threads but the solid insert (OD) will only have 4 threads of engagement. A wire insert disburses the torque stress across all threads of engagement a solid insert does not. ...
... but I was refering to something else. The thread insert I saw installed was a sleeve. But in order to install it, the whole spark plug whole tapped out to be a little bit wider, that enable the new sleeve to be in more then 4 threads. Wish I had a picture. The best way I could describe it was the sleave was 8(?) threads, same amount as the spark plug. The spark plug went into the sleeve and the sleeve went into the existing spark plug hole. Since you've had the head off you've see that the is more sidewall above the 4 threads that can be tapped.
Does that make any sense? I'll see if I can get any pictures, that may explain it a little better.
!
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Banned
Joined: Apr 2000
Posts: 299
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From: athens, TN
If the insert taps out the old threads and allows it to get a bite on more of the cylinder head that sounds like the way to go. If not the heli-coil looks like the better option. Looks like I am off to NAPA in a minute to check this out.
Rob
Rob
