[DeTomaso] Valve Lash (was "steering rack question")
JDeRyke at aol.com
JDeRyke at aol.com
Wed Jun 16 14:45:59 EDT 2010
I follow Dan Jones' method of adjusting lash on hydraulic cams, but in
're-adjusting' lash after the engine has run a bit, I do it directly. I dress in
worn clothes, fire the engine and when it's barely warm, I pull one valve
cover and adjust lash while the engine is at idle. This is terribly sloppy,
smoky from oil hitting the exhausts and often painful as hot oil on my hands
leaves burn marks. I can only stand the heat and smoke for the 8 valves or
one bank of my Cleveland, then I need a break to recover before doing the
second bank.
It's complicated by the need to slack off the tension from the stud girdle
on the rocker nuts, adjust the nuts and internal setscrews while working
around the loose but still-installed girdle, then retighten the stud girdle's
cross-bolts. But its the only sure way I've found to get the hot-lash where
it needs to be, and the combination of the adjusting nuts, setscrews and stud
girdle keeps the adjustment where I set it. Lets see- I last readjusted
the lash in '91... or was it '92? FWIW- J DeRyke
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