🚀 go-pugleaf

In article <wwebster-050193075910@47.220.4.39> wwebster@bnr.ca (Bill Webster) writes:
>
>Okay. I'll bite.  What is a "stuffer" backplate and where do you 
>purchase them?  I expect it's a new backplate to decrease crankcase
>volume, thus increase crankcase pressure.
>
>And, where do you get the pointed needle valve which still fits the
>original Fox stunt spray-bar?
>
>I've always found the Fox flattened needle valve works fine as long
>as it never gets bent.  I cut the needle valve short and put a 90 degree
>bend in it.  This way it avoids meeting terra firma.  Besides, it's
>the cheapest spray bar assembly you can buy.  But, I do wish the
>original Super Tiger assembly was still available.  The one from 
>Kustom Kraftsman is okay but very expensive and you have to use
>his needle valves (also expensive).
>
>   Bill Webster (WWEBSTER@BNR.CA)

Larry must have read his new Fox newsletter. Fox is offering a 'stuffer'
backplate and a pointed needle valve for the Fox .35. Fox is also
offering a two piece head for same motor. I've already picked up a 
couple of needle valves and they work GREAT! No more guessing on the
mixture setting with this needle. I've also bought a couple of stuffer
backplates from a machinist and they seem to improve the stunt run a
little. The 'stuffer backplate does fit in the crankcase more snuggly
and reduces the horrendous endplay on the crankshaft. Theoretically
its suppose to improve fuel draw/suction and pumping in the crankcase.
I wouldn't use the stock gasket though. It's too thick and causes
distortion to the backplate lugs since the gasket does not go beyond
the bolt circle.

As for the Super Tigre needle valve, I would be reluctant to use it
since it is larger in diameter than the stock Fox. This will reduce
the venturi area in the carb thus reducing your top end power. The
way around that is open the venturi with the next size drill bit or
reduce the diameter of the needle valve body  with a lathe.


Lyman Lew, lew@caesi.scg.hac.com