Mike Maclean wrote:
>
> This might be a simple question to some, but what is the proper
> technique to torque and re-torque the head on my rebuilt 948? What
> increments do you torque it down with the first time? And when you
> re-torque in the first 500 miles, do you loosen them first? Or just
> check if their still torqued correctly? I was just going to torque it
> down in 10 pound
> increments the first time. Pretty basic stuff, but all Haynes says is
> to retorque after the first 500 miles.
> Mike MacLean-60 Sprite
Mike
Start in the middle and work outwards. (there is a picture in the book
for exact sequence but it is not THAT critticle)
10lb increments is fine. I do it twice, 25 then 45 all around.
After 500 miles, start in the middle and tighten to 42 (or what ever a
948 should be) then readjust your valves. It is a good idea too keep the
valves a bit loose during that first 500 miles, set them at .013 or .014
cold (stock cam) and reset them at .012 after the retorque. (this is
what I do on the advise of an old race car builder. I do not know if it
is good or bad, I never had any troubles)
--
Frank Clarici
Toms River, NJ
Bugeye Sprite
67 Sprite
59 A40
http://www.exit109.com/~spritenut/
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