I am close to completing a valve job on my 1972 124 Spider. I had 1 valve seat replaced and all new valves installed and seated. One problem was that after re-gaping one valve was below the edge of the bucket.
However before re-installing back onto the engine I would like to ensure that the valve stem height is going to be within the shim-able range. I would like to measure that height but have not been able to find the dimension - from the top of the head to the top of the valve stem. I found a reference to it in a shop manual "Check height of valve stem above the cylinder head with gage A.86218" but no dimension of the gage is specified.
Any info would help.
Valve Stem Height above the top of head
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sofia72
- Posts: 9
- Joined: Sun Jul 19, 2015 9:59 am
- Your car is a: 1972 Fiat Spider 124
- Location: Burlington, Vermont USA
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sofia72
- Posts: 9
- Joined: Sun Jul 19, 2015 9:59 am
- Your car is a: 1972 Fiat Spider 124
- Location: Burlington, Vermont USA
Re: Valve Stem Height above the top of head
I found the info from Gay Croft http://www.guy-croft.com/viewtopic.php?t=1677, very helpful. I did a dry fit on the bench, I had to adjust the VSH on the new exh. valves by grinding the tops a bit, the intake valves were within spec. I'm glad I did these steps prior to assembly because I would have been right back in the same problem, with a valve gap to small allowing the cam to hit the top of the bucket. After assembly I adjusted the timing and carb. The car ran GREAT all summer and fall and did NOT consume any oil and the plugs stayed relatively clean ... I'm a happy camper.