anyone run a roller cam?

[pishta]

I got some used solid Hemi rollers and wondered if they could be used in a slant if I made the correct length link bars. Have Oregon cam grind me a roller (if they could as the roller lobes are super skinny) ..no hydro adaptation needed. Same diameter....?

 

[RustyRatRod]

Yes, they are the same .903 diameter. They used the same solid dumbell lifters some of the V8s used. The Hemi lifters should work.

 

[TrailBeast]

I got some used solid Hemi rollers and wondered if they could be used in a slant if I made the correct length link bars. Have Oregon cam grind me a roller (if they could as the roller lobes are super skinny) ..no hydro adaptation needed. Same diameter....?

Well that's a nice little bit of information.
I know for fact that Oregon Cam Grinders does rollers.

 

[pishta]

yes, I bought 3 sets of Johnson slant solids for a V8 once, they sold them in packs of 6! Question is can they do a roller grind on a mechanical slant core? These are full roller bottoms, that could ride on a full width lobe but they would have to be ground flat with no rotational taper. Cant hurt to ask or is the metallurgy different?

 

[my68barracuda]

yes, I bought 3 sets of Johnson slant solids for a V8 once, they sold them in packs of 6! Question is can they do a roller grind on a mechanical slant core? These are full roller bottoms, that could ride on a full width lobe but they would have to be ground flat with no rotational taper. Cant hurt to ask or is the metallurgy different?

As you know, roller cams have a much more aggressive profile, when compared to solid lifter cams. The roller cams faster ramp speed requires a higher valve spring pressure to keep the lifter on the cam. The higher spring pressure means that the cam shaft needs to be made of a tougher material than a solid lifter cam. Also the roller cam's roller contact point does not spin laterally across the cam lob surface the way a solid lifter does, again requiring a tougher material in the roller cam as the spinning action of a solid lifter allows the lifter to ride on a film of lube oil, while the roller on a roller lifter basically squeezes away the lube oil in front of the roller to cam contact point. This does not mean a solid cam re ground as a roller will not function, it just won't function for many miles,, may work for several runs in a drag race only application. Or, have Oregon grind the roller using the proper material-steel billet.

 

[TrailBeast]

As you know, roller cams have a much more aggressive profile, when compared to solid lifter cams. The roller cams faster ramp speed requires a higher valve spring pressure to keep the lifter on the cam. The higher spring pressure means that the cam shaft needs to be made of a tougher material than a solid lifter cam. Also the roller cam's roller contact point does not spin laterally across the cam lob surface the way a solid lifter does, again requiring a tougher material in the roller cam as the spinning action of a solid lifter allows the lifter to ride on a film of lube oil, while the roller on a roller lifter basically squeezes away the lube oil in front of the roller to cam contact point. This does not mean a solid cam re ground as a roller will not function, it just won't function for many miles,, may work for several runs in a drag race only application. Or, have Oregon grind the roller using the proper material-steel billet.

The facts could be found out real quick by calling them and asking.

 

[pishta]

A custom ground billet roller for a slant with oil pump drive... I think that answeres my question.

 

[Charrlie_S]

Oregon Cams has done roller cams for the slant. I don't know if they still have any billet cores left. You will need to call them for the correct info.

 

[Killer6]

A custom ground billet roller for a slant with oil pump drive... I think that answeres my question.

There is a thread on .org about this very thing, supposedly there are a handful of roller cores at Oregon left, once they're gone.....I'd get one for the turbo project,
but I'm not set on the specs yet so no can do unless I purchase the core and hold on to it 'till that time.