Lightweight valve lifters
02-26-2010, 10:46 AM
#47
Do you see anything different about the composition? Do the blocks normally have Copper and Zirconium?
02-26-2010, 10:51 AM
#48
Rennlist Member
That could be very easy to calculate, and it might not even even be a rounding error at best.
(qualifier: depends on the acceleration rate you do the test with. example, in 3rd gear vs out of gear. It also depends on the rpm, even if the test is static, like on a brake dyno as the ligher lifter has a net effect simular to a heavier valve spring)
(qualifier: depends on the acceleration rate you do the test with. example, in 3rd gear vs out of gear. It also depends on the rpm, even if the test is static, like on a brake dyno as the ligher lifter has a net effect simular to a heavier valve spring)
02-26-2010, 05:20 PM
#49
Rennlist Member
wow, great pictures guys.
I get it, the proximity of the cam to the valve means cold or hot, no difference. (Old chevy guy, so cam to pushrod to rocker arm = must measure lash when hot.)
I take it on our 928's, you can measure from cam base to cam tower base with gasket and head top to valve stem top and calc solid lifter thickness necessary.
I get it, the proximity of the cam to the valve means cold or hot, no difference. (Old chevy guy, so cam to pushrod to rocker arm = must measure lash when hot.)
I take it on our 928's, you can measure from cam base to cam tower base with gasket and head top to valve stem top and calc solid lifter thickness necessary.
02-26-2010, 05:30 PM
#50
Addict
Rennlist Member
Rennlist Member
All used as alloying agents and Zr (I initially read it as Zn Zinc) for corrosion resistance. What the Antimony does I don't know - it hardens Lead alloys.
