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Hacksaw · 08-07-2017, 01:46 PM

Guys like Carl and other engine builders would obviously see the results and the pros and cons of each type. I am no expert, IMO the needle type is more efficient than a bushed lifter. What causes a roller on a needle bearing lifter to stop turning and goon the cam etc. ? I think if the engine gets a flash of rpm, like wacking the throttle in the water, the spring slams the lifter on the cam and it puts a flat spot on a needle and that leads to a failure.

08-07-2017, 01:46 PM	#3
Hacksaw Senior Member Join Date: Sep 2016 Posts: 884 Likes: 209 Liked 311 Times in 175 Posts	Re: more thoughts about needle bearings Guys like Carl and other engine builders would obviously see the results and the pros and cons of each type. I am no expert, IMO the needle type is more efficient than a bushed lifter. What causes a roller on a needle bearing lifter to stop turning and goon the cam etc. ? I think if the engine gets a flash of rpm, like wacking the throttle in the water, the spring slams the lifter on the cam and it puts a flat spot on a needle and that leads to a failure.