Quote:
Originally Posted by 1795
Brian,
Some companies make extreme duty rollers that use brass instead of the needle bearings in the rollers. They supposedly last twice as long as the needle bearing rollers.
Jim
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Yes, that is a much better option these days. One factory engine (Captiva diesel) with roller followers (OHC) which suffer from needle bearing failure have revised followers with bushed rollers.
Quote:
Originally Posted by blykins
I have no issues with hydraulic rollers (or any rollers) in my 385 series engines. A .600" lift cam is pretty mild these days, I usually run a minimum of .630" lift and on up.
My solid rollers for pulling engines will go up to 1" lift with a roller cam.
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One of the biggest benefits of roller cams, where a flat tappet cannot compete.