Subject: [s-cars] FYI - Q: Anyone have experience with "Time Serts"?

[Trevor Frank]

www.timesert.com


I second that, but Mike that 914 will eventually need time serts.  I
posted this to the list along time ago.  Don't want to get into it again
but I discouraged the use of helicoil's to replace spark plug threads.
Timeserts have special inserts just for spark plugs, higher thermal
conductivity and a gas tight seal.  Helicoils tend to eat into the head
and eventually come out, especially on an abused race motor.  They also
tend to insulate the spark plug, effectively upping the heat range.
This can not only lead to poor running of the motor, but eventually
premature failure of the plug and possibly lead to detonation.

I used to run an E-prod 914 and have seen other racers run into this
problem, especially on this air-cooled, nearly 14-1 compression ratio
motor.  They tend to be fairly sensitive.  The cylinder with the repair
required a lower heat range plug and a smaller gap.

-----Original Message-----
From: Mike Platt [mailto:mplatt911 at yahoo.com]
Sent: Friday, August 22, 2003 8:14 AM
To: thecyberpoet at cyberpoet.net
Cc: Scar
Subject: Re: Subject: [s-cars] FYI - Q: Anyone have experience with
"Time Serts"?

I have. They are the best. I have an old 911 with
magnesium case. The threads often strip out. Normal
procedure is to tap out all the threaded holes for the
transmission and heads, then replace with timeserts.
Mine was done about 10 yrs ago. No problems.
Mike P.
95.5 S6 avant
75 911 Carrera Targa (flammable engine case
timeserted)
74 914 (don't need no stinkin timeserts)
94 Ford Ranga! (what's a timesert?)

Anybody have experience with these?

http://www.enginetech.com/pr_threadrepair.shtml

Thanks
=-= Marc Glasgow



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