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Originally Posted by KWright
(Post 4406828)
I can belive this, I pull oil temp from my pans, when we added spring olers, also put drains from heads to the pan. After a good 6000 rpm pull you could watch the oil temp rise by 50 or more degree's.
Here's another tidbit - even though an extreme psi + rpm difference, but a lot shorter time period, Warren Johnson had mentioned his valvesprings where proven to hit 700*F by the end of a 1/4 run. Yeh, that's a wholly crap ! Everyone looked at MT's link earlier where it had graph's showing psi lost vs heat increase right ? |
Originally Posted by SB
(Post 4406847)
Good info.Thanks.
Here's another tidbit - even though an extreme psi + rpm difference, but a lot shorter time period, Warren Johnson had mentioned his valvesprings where proven to hit 700*F by the end of a 1/4 run. Yeh, that's a wholly crap ! Everyone looked at MT's link earlier where it had graph's showing psi lost vs heat increase right ? |
I think I've heard of those lifters. Doh !
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Ive recently learned howards has really stepped up their game to the next level in the cam department. Lobes are spintron tested as well.
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Originally Posted by MILD THUNDER
(Post 4407874)
Ive recently learned howards has really stepped up their game to the next level in the cam department. Lobes are spintron tested as well.
I had a solid lifter go bad on an engine two years ago on my 138631 cam. I caught everything before there was a catastrophic failure but still had to replace the cam and lifters. They lasted about 200hrs but the Comp lifters that were in the other engine were fine. I would normally go 250 hrs with Morel/Comp/Crane lifters before changing them. They were less expensive than the competitors lifters at the time I purchased them but the heat treat process they were using is I chose to try them back then. When all said and done, I wound up replacing the lifters on both engines with Isky Red Zone's. |
Originally Posted by Panther
(Post 4407920)
I hope their lifter quality has improved. I can't unequivocally say they were bad but, they didn't perform like I was hoping. Maybe I got a bad set.
I had a solid lifter go bad on an engine two years ago on my 138631 cam. I caught everything before there was a catastrophic failure but still had to replace the cam and lifters. They lasted about 200hrs but the Comp lifters that were in the other engine were fine. I would normally go 250 hrs with Morel/Comp/Crane lifters before changing them. They were less expensive than the competitors lifters at the time I purchased them but the heat treat process they were using is I chose to try them back then. When all said and done, I wound up replacing the lifters on both engines with Isky Red Zone's. http://www.competitionproducts.com/m.../#.Vs3yKHTnZnE |
Originally Posted by MILD THUNDER
(Post 4407874)
Ive recently learned howards has really stepped up their game to the next level in the cam department. Lobes are spintron tested as well.
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Originally Posted by MILD THUNDER
(Post 4407921)
Howards race and promax hyd roller lifters are made by morel.
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Originally Posted by Black Baja
(Post 4407922)
After some back and fourth I ended up buying a cam from Jones. Only company that had a reasonable turn around time. It's difficult to get 55mm cores with small lobes.
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Originally Posted by Panther
(Post 4407923)
That's what they told me when I bought them but still had the failure. One lifter hammered the bearings out of it and 3-4 other were on their way out. I ran the same setup since 2007 without other issues.
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