I forgot about these but just came across the picture again.  I figured they deserved a re-post.

 

 

 

Edited April 22, 20186 yr by 240260280

2 minutes ago, 240260280 said:

I forgot about these but just came across the picture again.  I figured they deserved a re-post.

 

 

Any other info? Source?

46 minutes ago, Patcon said:

Any other info? Source?

Malvern Racing  Circa 1999

 

The rockers required a custom cam.  There was a lot of R&D but no real success.  A report of a 10,000 rpm motor for a boat is on zcar.com but it was not a reliable product.

Edited April 22, 20186 yr by 240260280

56 minutes ago, 240260280 said:

Malvern Racing  Circa 1999

 

The rockers required a custom cam.  There was a lot of R&D but no real success.  A report of a 10,000 rpm motor for a boat is on zcar.com but it was not a reliable product.

So NLA????

Trying to get more RPM is an interesting idea, but with a somewhat poorly flowing head might not be worth it. But as they eliminate zinc in the oil, rollers might be nice...

There's a town near me named Malvern, and when I first saw these rockers, I dug around a little trying to find out more about their origin. Unfortunately I came up blank. So I don't even know if the "Malvern" they reference is the town near me, or something or somewhere else.

Your google-foo is strong... You can't find more info than that? It wasn't that long ago.

When I googled Malvern racing I ended up with a bunch of hits on a motocross venue...

I did a quick fresh search and came up with the following (unverified) tidbits:

From https://www.ishcc.org/VA/Charlottesville/malvern-racing-inc:
Malvern Racing Inc
Phone: (434) 971-9668
271 Malvern Farm Dr
Charlottesville, VA 22903-7440

From http://www.hotrod.com/articles/ccrp-0906-this-guys-garage/
Dave Weber
Martinsville, VA

From http://community.ratsun.net/topic/24873-need-cam-springs-valves-and-rockers/

Yeah - Malvern Racing >> Dave Weber was a great engine builder/fabricator/machinist in rural Virginia
south of DC. He was well known among east coast Datsun/Nissan racers and was a prolific cam grinder.
Dave died several years ago, so anything Malvern is NLA. Get it while ya can!

So I'm guessing that's the guy, but it also seems that the prospect of finding more of those rockers is out of the question unless someone who bought them a while ago is selling them off.

2 hours ago, Captain Obvious said:

I did a quick fresh search and came up with the following (unverified) tidbits:

OK C.O., do you think he was making these or sourcing these from somewhere else? Mercedes part maybe?

The info you found suggested he had CNC machines but this doesn't really look like a machined part. If it's not machined then it's cast. Casting is not a DIY kind of thing normally. So maybe there is a source somewhere...

"Hoover" @240260280 go find it man!

Yeah, the rockers that Hoover posted are definitely cast. You can see the mold part line and everything.  Although, in my search travels I did turn up some pics of some carved versions (that were supposedly made by the same guy).

Found those here: http://www.datsunparts.com/1162

My plan was to tempt Blue just enough that he couldn't resist anymore and found the motherlode of the cast versions. 

That's for a roadster motor. I am not sure it would even work on 510 motor. Neat idea though...