Solid Rollers on Cast Cams

[87bigcut]

That sums up the problem with banning people as far as I can tell. If people are a big enough ass, then members can block them. If they bash someone that doesn't deserve bashing, the get a couple keyboard lashings and go on their way.

Some of these guys need thicker skin.

Joe

Oh and BTW Ken, my dad has that book sitting in the "reading room" and has for a while now. His favorite book for sure.

 

[turbofabricator]

That sums up the problem with banning people as far as I can tell. If people are a big enough ass, then members can block them. If they bash someone that doesn't deserve bashing, the get a couple keyboard lashings and go on their way.

Some of these guys need thicker skin.

Joe

Oh and BTW Ken, my dad has that book sitting in the "reading room" and has for a while now. His favorite book for sure.

Take the time to read it yourself. Best few days of spare time you can spend. If you want to make a million dollars, don't ask someone that makes $50,000.

 

[Turbo1dr]

I've only used solid roller lifters on billet roller cams. I've never had a cast roller cam before. When those budget roller cams came out I was asked by a couple of people in my area about what I thought about them and convinced them not to buy them. My gut feeling turned out to be right on that junk.

As far as me using solid roller lifters...I've not had a problem using solid lifters on a hyd cam. I think the hyd cam uses a faster ramp speed than a solid to make up for bleed-down on the hyd lifter as it opens the valve. I could be wrong so correct me if that's not true.

I set the solid valve lash around .004 when HOT (190 to 200 degrees). The aluminum heads grow and shrink so much that I've actually had low compression on a couple of cylinders on a very cold morning start-up (25-40 degree's). Once the engine gets warm enough for the heads to grow the valve lash opens up to your set lash. I've tried to set the lash like the cam card spec says but if I do that I'd have .020" clearance once warm...and that sounds like s h it.

I've also had the valves adjusted on the tight side before and the engine would run and sound great under normal everyday driving at normal temperatures. But once I nailed the throttle and done a third gear pull from 70 to 120 the valves would actually grow in length and cause the engine to miss when it came back down to an idle. Once the heads and valves cooled off (even if I never cut the engine off) the engine would start to run on all cylinders again. This happened this past weekend at Richard Clarks when I was on the dyno.

Anyway, this was what I've done with mine....even if it's not right. I've always liked to do things my way first and if it fails then I'll ask someone else.

 

[Alky V6]

I had a customer that supplied his own hydraulic roller cam and hydraulic roller lifters on an engine rebuild. The lifters were too noisy for his liking so he came up with the idea to use solid rollers on his hydraulic roller cam because he'd heard it worked just fine. It was the first time I'd heard of this. I tried to warn him on the possible outcome, but he was stubborn about wanting to do this. I ended up telling him, "Hey, it's your dime. You just tell me what to set the clearance at." He did his own research, actually talked to a few well known Buick gurus and we did the job to the specs he was told. Well, it beat the heck out of the lobes in short order. Whoever it was that gave him the advice was wrong on something. That's my experience with the little experiment.

 

[joe_schindler]

I don’t think it matters if it’s a billet cam or cast. You can run solid rollers on a cam ground for hydraulic lifters; as you can run hydraulic on a cam ground for solid lifters. Neither will work as well as if you ran the correct lifters on the cam as it is designed for. A billet cam just has a chance of surviving a little longer.

Hydraulic lifter cams still have a clearance ramp ground into them; that will keep the solid lifter from being adjusted properly. Bison addressed this (I believe) by saying they could be run with a tight lash.

Still it’s not a good idea. Otherwise; there’d only be one cam listed in the catalog.