Solid roller lifters......
 

I checked my valvelash a few days ago and 1 engine had 3 different valves that had huge gaps, so i pulled off blower and intake manifold and found 2 completly ceased crower roller lifters and 1 that had lost all the needle bearings. camshaft is completly destroyed. Engines only have 40 very easy hours on them. I pulled engine and tore it down and took block to machine shop to get re-honed and hot tanked. I am scared to use crower lifters when i put engine back together. Machine shop owner suggested that i have lifter bores opened up from .842 to .903 and go with a 2500 dollar set of Jesel lifters. Does anybody have any kind of experience with these expensive Jesel lifters? Are they really going to be the answer to my problems??? And do u really think they are woth the money compared to the Crowers? I am all for it if it means i will have more reliability but the price seems rediculous!!!:eek:

Fixx
 

i would just get the isky red zone lifters..had great luck with them..

example listing..
http://www.summitracing.com/search/B.../?autoview=sku

Isky
+1

What are the specs on the cam ? what springs are you running ? is there any gas in your oil ?

What part number were they ? what oil were you running?

the can is a lsm systems with .730 lift with 264 intake and 272 exhaust duration. Springs are manley part# 221424 with 260 pounds seat pressure and 790 pounds open pressure. and i didnt notice any gas in the oil. it looked pretty good.

i believe the lifters were 66291 H

LSM, is that one of Wayne's motors or Par? I'd run the Isky's.

Just curious because I've run the Crower 66291-H for years without a problem. Little bigger cam and more spring pressure.
Dave Crower recommended straight weight oil.

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.