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Quote:

Originally Posted by 14 apache (Post 4507751)

I have not had that problem but I did tare the lobe face off on the lift side of the lobe that's from the stainless 2.400 intake valve.
210 on the seat would run low 6k.

And you don't think that was caused by the roller not wanting to spin because the needle bearings were hammered out.

Quote:

Originally Posted by GPM (Post 4507762)

And you don't think that was caused by the roller not wanting to spin because the needle bearings were hammered out.

The needles were still great the lobe could not handle the spring plus the valve. When it opend.

Quote:

Originally Posted by 14 apache (Post 4507763)

The needles were still great the lobe could not handle the spring plus the valve. When it opend.

Wasn't a bm cam? What lifters where you using when that happened? I want those kind after the abuse they or one took incl high pressures to boot and still looked great. Seriously... Was morel needle then or different lifters?

Quote:

Originally Posted by 14 apache (Post 4507763)

The needles were still great the lobe could not handle the spring plus the valve. When it opend.

I would think the pressure against the lobe would be much greater when trying to open an exhaust valve against cylinder pressure, than opening an intake valve , even if a 2.400 ?

Quote:

Originally Posted by MILD THUNDER (Post 4507771)

I would think the pressure against the lobe would be much greater when trying to open an exhaust valve against cylinder pressure, than opening an intake valve , even if a 2.400 ?

Exhaust lobes were perfect the valve weighed a ton. If it was a titanium valve I am sure would not of bin a problem.

Quote:

Originally Posted by getrdunn (Post 4507769)

Harold from ultra dyne camshaft and crane ultra pro lifters.

Quote:

Originally Posted by MILD THUNDER (Post 4507771)

I would think the pressure against the lobe would be much greater when trying to open an exhaust valve against cylinder pressure, than opening an intake valve , even if a 2.400 ?

There is. About 10 times more.

Quote:

Originally Posted by MILD THUNDER (Post 4507731)

Even back in the day? Like say, a few years ago? I thought the crower solids had bigger wheels and fork style lifter even in the .842 diameters up till recently? I know the hydraulic crowers my buddy had bought several years back, were .750 wheel fork body. They looked like the morel. I never put them side by side on a bench to compare though.

I don't know who was making them for them back in the day. Possibly Shaver??? Johnson currently makes Bodies for Isky and Crower. They are fork style with .750 wheels. Johnson use to make lifters for Comp. Comp dropped them because they were having problems. They also use to make lifters for Scorpion. scorpion were offshore boat people. I know in the beginning they were having problems with the pile valve in the Hydraulics. The guy who built the 540's that were in my Fountain was involved in the early testing with Scorpion. Scorpion has since dropped Johnson and got out of the lifter business from what I understand. Johnson had problems and shutdown for awhile. This was years ago. If you can think back a few years. There was a time when there was a big void in the market and you couldn't get hydraulic lifters anywhere...

Quote:

Originally Posted by 14 apache (Post 4507751)

I have not had that problem but I did tare the lobe face off on the lift side of the lobe that's from the stainless 2.400 intake valve.
210 on the seat would run low 6k.

What was the duration @.020 and @.050?

Hey Tim what were your .020 and .050 duration numbers on your cams???