I am contemplating swapping my hydraulic roller set up for a solid roller set up as I have had 2 recent lifter failures that were nearly catastrophic to my motor.
My engine is a 385 sbc stroker with all forged internals, cam is a Crane small base billet part number 119651, if my memory serves me right, Comp. cams magnum hyd. roller lifters, Scorpion 1.60 roller rockers. Heads are AFR 210's out of box.
My first failure was with 5 yr old roller lifters and I dropped a valve due to it, luckily the valve bent and did not fully drop or it would have been game over. I replaced the roller lifters with a new set and for 4-5 months everything was fine but then after a race when I started her up she sounded like she had a slite miss and a couple of lifters were chattering.
I adjusted the valves all over again and she ran fine but then I went to Ennis for Test n tune and on my first pass she started to rock and shake real hard just past the 1/8th mile marker, I lifted and coasted in, the car sounded again like a cylinder was dead and I had the lifter noise on the drivers side real bad.
After letting her sit for a while I attempted to start her back up and she ran better but not great so I took her home. The next day I went to start her and isolate the damn lifter that is hurt and she ran like a champ, I have shut her off and on 4 maybe 5 times to get her to do it again and she runs fine. I do not trust the lifters and I really am at my wits end with them as I only spin her to 6300-6500 rpm's. The LS1 guys are winding them up at the track all day long to 6800 with no problems.
I am at a loss as to why this is happening as these are not old, they are new and they are not cheap Chinese crap, they are Comps best hyd. roller lifter. Anyone got any idea's? I hate to spend a lot more money on converting to a solid set up but this is getting old fast.
If I do change my lifters and springs out to go solid can I run that cam with a solid lifer and better springs?
Thanks,
Mike
My engine is a 385 sbc stroker with all forged internals, cam is a Crane small base billet part number 119651, if my memory serves me right, Comp. cams magnum hyd. roller lifters, Scorpion 1.60 roller rockers. Heads are AFR 210's out of box.
My first failure was with 5 yr old roller lifters and I dropped a valve due to it, luckily the valve bent and did not fully drop or it would have been game over. I replaced the roller lifters with a new set and for 4-5 months everything was fine but then after a race when I started her up she sounded like she had a slite miss and a couple of lifters were chattering.
I adjusted the valves all over again and she ran fine but then I went to Ennis for Test n tune and on my first pass she started to rock and shake real hard just past the 1/8th mile marker, I lifted and coasted in, the car sounded again like a cylinder was dead and I had the lifter noise on the drivers side real bad.
After letting her sit for a while I attempted to start her back up and she ran better but not great so I took her home. The next day I went to start her and isolate the damn lifter that is hurt and she ran like a champ, I have shut her off and on 4 maybe 5 times to get her to do it again and she runs fine. I do not trust the lifters and I really am at my wits end with them as I only spin her to 6300-6500 rpm's. The LS1 guys are winding them up at the track all day long to 6800 with no problems.
I am at a loss as to why this is happening as these are not old, they are new and they are not cheap Chinese crap, they are Comps best hyd. roller lifter. Anyone got any idea's? I hate to spend a lot more money on converting to a solid set up but this is getting old fast.
If I do change my lifters and springs out to go solid can I run that cam with a solid lifer and better springs?
Thanks,
Mike