Anyone heard of these?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7949013539&rd=1&sspagename=STRK%3AMEWA%3AIT
Went to the website any there is some good history, but I can never tell what is what on the net. Thanks, Marc

Guy building my engine swears by them. But of course he said I don't need them for my engine. The set he had sitting there looks great and are built well.

You can buy those over at Competition Products for $149
BBC part # is 4570A
Phone # 1-800-233-0199

Interesting. Any truth to the claim that all other roller rockers are made incorrectly (the website claims that when Harland Sharpe started making rollers long ago that he traced an outline of a stamped rocker and made the trunion sit in the wrong (not ideal) place, and that all other rolers are copied from this design flaw). Just wondering if it's worth getting a set or are they tooting there own horn? daveseitz, just wondering why your engine builder said you don't need them? Not going roller? mr 4 speed, is this the same site you are talking about http://www.primediapowerpages.com/cgi-bin/ePages7.storefront/41f18cd9022bc3f0271ec0a8013606a3/Product/Variation/100216&2D1030908&2A1 All the info I can get only helps. Thanks for the replies. This forum is so much more fun than the stick in the mud people in restoration corner (not bad people, they just have tunnel vision).

Yes,those are them..

I was looking at these before. They were way more expensive than they are now. I've heard many horror stories from dirt track racers that tried them recently only to last a couple laps, in some instances, because they break apart at the trunion. Apparently they are now cheaply made in China with inferior material which is why they are so cheap.
I ended up getting comp pro mags to replace my outdated Harland sharps that, for some reason, couldn't even get close to proper geometry. With the Comps, it was no problem.

have seen them crack along the top and spit bearings into motor,s

Actually there are Two "Types" of Millers. the Real good Claim-to-be non-breakable type are $700 a set. These are the "more affordable" version. They are not to be used in a solid roller motor or an aggressive solid flat tappet motor.

I have sold these in the past and never had an issue, BUT I ONLY sold them to purchasers of hyd roller medium lift cams.

While we're (at least you guys are) on the topic of roller rockers. Do any of you guys have experience with the Crane Energizers. Interestingly, the post above that mentioned problems with geometry hit home with something I have suspected. Comp specs their 8315 retrofit pushrods for hyd roller install along with their 854 lifters. The 8315's are supposed to be the correct length to offset the increased ht. of the roller lifter. Sounds logical to me. I had checked the contact point of the valve stem and am getting a nice mark across the center of the valve stem. But it seems to me that when I install the Crane Energizers there seems to be a slight interference at valve seat that I can not seem to pinpoint. I did not have this issue with these rockers and the flat tappet nor do I notice any problems with the long slot stamped and the low lift (.540) roller. Any ideas?

It could be the rocker hitting the retainer or pushrod hitting the head at the pushrod holes?

Chris.

I tried several sets of them about 5 years ago and on the first 3 engines the rockers failed with in a few laps and filled the head and the lifter galley full of needle bearings and I called the owner of Miller rocker arms and all he could say was I was doing some thing wrong. I went back to the Crower stainless rockers and the problem was solved so I figued out what I was doing wrong was running there junk.

I WOULD HIGHLY ROCOMEND NOT RUNNING THERE ROCKERS SO YOU WON'T HAVE TO GO THROUGH WHAT I WENT THROUGH.

Carl, Kind of the "if it sounds to good to be true it probably is", right?

Reason I don't need them is it will be a street engine. I was told the only reason I would need them is if I wanted to spend money. Cam rods ect compression all total will be mild. Builder has used these on nearly all the big Mopars he does.

We did have one set of 1.6 Miller rockers went 6 races (circle track) and pulled them of before they failed and noticed that the rollers on the end of the rockers beat the top of the valve stems up a little and figured it was due to the tiny wheel that they used as compared to a Cower or Comp rocker.

Great responses and info. Thanks all. I don't think I'll be using these.

Bill, I've run the Crane Energizers for 20,000 miles now. Frankly didnt know any better when I bought them, and have trusted the Crane name for years. SO far so good. But they do have extra meterial underneath, check retainer clearance.