Solid roller lifters......
07-08-2011 | 11:03 PM
#12
Rob
Joined: Aug 2001
Posts: 21,637
Likes: 9
From: Ms
I dont think its the name brand ,something else is causing the failure.Ive had good luck with there lifters over the years,alot of endurance running.Had a set of race light weight taps with 10k miles and had about .100 slack in the roller,sent them back and they said they havent had any with that kind of miliage and sent me a new set free,
I would give Bob a call,I would even send him the lifters for analysis,Morrell,He's is pretty up to date with the high end lifters and has a lot of experance ,It would be worth you while to call him!
http://www.marinekineticsonline.com/services.html
I would give Bob a call,I would even send him the lifters for analysis,Morrell,He's is pretty up to date with the high end lifters and has a lot of experance ,It would be worth you while to call him!
http://www.marinekineticsonline.com/services.html
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07-08-2011 | 11:04 PM
#13
Registered
Joined: May 2010
Posts: 119
Likes: 1
At speed talk there is a discussion of solid roller failures. All related to the needle's. The recommend was the Isky EZX bushing type to prevent these type of failures. Not sure it that helps.
Isky EZX
Isky EZX
Last edited by DirtyJohnson; 07-08-2011 at 11:18 PM. Reason: added link
07-08-2011 | 11:12 PM
#14
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Joined: Mar 2004
Posts: 2,696
Likes: 93
From: Pa
Motors were originally built by Kieth Scroggen out of Oklahoma city. Wayne did retrofit them with the 8.3 blowers and mefi 4 ecu, used to have the 2.3 quadrotors and autronic ecu but were nothing but problems. I talked to Kieth and he puts new lifters in at 100 hours so not really sure why i lost 3 with only 40 hours on the motors.
Last edited by GPM; 07-08-2011 at 11:22 PM.
07-08-2011 | 11:23 PM
#15
Thread Starter
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Joined: May 2009
Posts: 97
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From: Kelowna BC canada
i did blow a lower drive my last day out at the end of last season and i had to idle in on the 1 motor and it was at least 2 hours of it being at idle, i wonder if that could have caused this lifter problem?? thoughts??
07-09-2011 | 07:09 AM
#17
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Joined: Mar 2004
Posts: 2,696
Likes: 93
From: Pa
As long as you had oil pressure, the 66291-H lifter would be putting oil to the face of the cam at all RPM. We run more than 790 lb springs without a problem. Spend hours towing skiers, tubers, cruising. There's always the possibility of a bad set of lifters, but I would be checking everything else. What oil do you run ?
07-09-2011 | 12:01 PM
#18
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Joined: Jul 2002
Posts: 2,867
Likes: 2
From: Waterford,MI
No question go to the .903 lifters no matter which brand.That gets you a slightly larger roller bearing in the wheel and the chance to true up your lifter bores. You also need a cam expert to look at your cam needs from an endurance standpoint. A drag race profile may just be too violent of a motion for the lifter to live very long. Bob Madera should be able to steer you in the right direction.
07-09-2011 | 02:34 PM
#20
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Joined: May 2009
Posts: 97
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From: Kelowna BC canada
As long as you had oil pressure, the 66291-H lifter would be putting oil to the face of the cam at all RPM. We run more than 790 lb springs without a problem. Spend hours towing skiers, tubers, cruising. There's always the possibility of a bad set of lifters, but I would be checking everything else. What oil do you run ?
