I started development of a roller cam kit over a year ago but have not
had much time to work on it. I currently have a batch of steel cams at a
macine shop getting the gear cut. I expect the price to be between $1500
and $2000. I plan to include needle bearings for the cam to ride in. The
block will need bored for the cam bearings and for the oversize roller
lifters. Let me know if anyone has any interest.
Richard Good
Good Parts
EDWARD BARNARD wrote:
>Lister's:
> Those of you who know me know that I've come up with some real
>hair brained ideas at times. Well this question may be another one of those
>way out ideas. Y'all be the judges. A couple of months ago I was working on a
>"blown" 496 Hemi for a friend (by the way, this is not in a TR, it's in a "70
>Superbird). I am of the opinion that engines are pretty much the same, at
>least in principle. Well, come to find out this has what they call roller cams
>and lifters. Not rockers mind you. The lifter has a set of roller bearings in
>the surface which contacts the cam lobe. The cam lobe is ground with the same
>amount of lift as a normal cam for this car, but the ramp to fully open is
>extremely steep and the open duration is very long. The roller bearings are
>there to handle the extreme loads placed on the lifter by the steepness of the
>lobe.
> The idea with it is to decrease the amount of time the valve is
>moving between closed and open, and leave it fully open longer. Sounds like a
>great idea to me! There are other considerations to take into account. With
>this setup they don't want the lifters to rotate for obvious reasons, so they
>place a pivoting bar between every two lifters to stop this. Kinda hard to
>describe without a picture, but a needed evil that I think could be
>substituted by something else.
> Anyway, my question is; has anyone ever seen this setup before?
>Tried it on one of our TRactor motors before? Think I'm crazy? (don't all
>raise your hands). It just strikes me in my idle time that we send piles of
>money for roller rockers which look cool but gain us very little h.p., while
>roller lifters may gain more. By the way, I'm told this is twenty year old
>technology. My friend is suppose to give me a used roller lifter to play with
>so I'm interested in your ideas. Thanks - Ed
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