[DeTomaso] Best valve spring compressor and keep the valves in place

[JDeRyke at aol.com]

In a message dated 11/20/07 9:52:46 PM, SOBill at aol.com writes:

> The articles always shown the valves being held closed by compressed air 
> with the piston at TDC. This isn't that simple, if the piston is not at exact 
> TDC, 100psi of air will likely make the crank rotate forward or backward.....
> 
Same thing happens during a leak-down test, or when trying to torque the 
harmonic balancer bolt to 100 ft-lbs in the car. I've had good luck with a long 
pry bar thru the bellhousing access hole, into the clutch parts. Once done and 
the flywheel rotated slightly with the front crank-bolt so the bar is tight 
against the side of the housing, zero rotation will occur. Cheers- J DeRyke, 
shade-tree mechanic


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