NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted June 08, 2009 10:14 PM
quote: Karl, what springs are you running? Have you had any puller issues?
I just measured the stock spring tension, the muzzy spring tension and the schnitz spring tensions at different installed stack heights. The data gets confusing but i'll try and make it as simple as possable.
First the stock clutch stack height is 2.270" (2.240"-2.270") and the spring installed height is 1.475" stock spring is 53 lbs and the schnitz (zx-6?) is 79. The Muzzy spring coil binds at about 1.480" so It cant be used with a stock stack height.
The muzzy clutch 10 2.0 steels and 11 frictions has a stack height of 2.220 and spring installed height of 1.588". At this installed spring height a stock spring is 48 lbs muzzy is 63 lbs and the schnitz is 73 lbs.
The muzzy clutch stack height plus one 1.6mm steel is 2.285" the installed spring height is 1.525" stock spring at that height is 50 lbs muzzy 67 and schnitz is 77.
Karl, muzzy stack minus one 2.0mm steel and add two 1.4mm = 2.260" .040" taller than the muzzy stack and right in the spec of proper puller and rod alignment.
Just posting this quick right now but I think I got this all down correctly. I'll have to re check all my notes thou.
I have never measured the stock installed height on a set of springs......, only with a lock up hat installed......., but those numbers seem low, around 10 lbs off, or more, ........just an FYI for some guys running lock ups.........., for what its worth
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42 Wins
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2009 PMRA Super Street Points Runner-Up
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