double 4-spoke (thick 4-spoke + thin 4-spoke)

Looks similar to Speedstar Mk III



Topy Jovite has 6 rivets like original Mk III, and lug holes are not separated from the spoke as they are on Mk III (don't have a ridge surround the lug holes)

Topy made many of the original Nissan factory wheels

Attach file:

---

  Topy Jovite.jpg (182.30 KB)


  13x8 -12.jpg (73.22 KB)

Thanks

cleaning the H891 head with dual valve spring. wanna try with twin SU.

mod the used airfilter with transparent plastic sheet. removed the paper filter element (it was soak in oil)
Can i use foam filter sheet in it?

Attach file:

---

  air filter.jpg (143.56 KB)

Looks like fun. Sure, you can use foam sheet, remove the paper filter and wrap the perforated metal with foam, glue ends together

Make sure is enough space between end of air horns and Lucite cover? 8mm not enough, maybe 30mm for best airflow? Maybe try it with and without the velocity stacks

The space between air horn end and lucite cover is about 27mm. Or should I replace the lucite cover to perforated sheet, and place another foam filter on it...

27mm is probably enough. I'd run it just as is

Thanks DD. Will complete it by the weekend and test run...

I can see the foam filter sheet from 15ppi to 60ppi from eBay. Which one will be the best? Filter oil is necessary? I'm new to this..

I don't really know, except for small engines (lawnmowers, generators, etc) I've never used foam filters

Dual valve spring head installed. Still in warming up period, so didn't rev beyond 3k rpm yet to see if there is any different.