Carb swaps

Im doing a project that involves a mazda rotary engine in a '64
alpine...and I would like to swap on a carb set from a large bike
(1000cc or better 4 throat carb) its a 1.1liter engine (1100cc) being
new to rotary...and absolutely inexperienced with bikes I have no idea
if it can be done...what problems ill encounter etc. I will be hand
making the intake...the goal is to achieve the look of a late 60's
vintage racer (as much as possible with a wankle engine) without the
budget for multi side draft dellortos or multi throat mechanical fuel
injection I have been looking at gsx 1000 or better carbs....any help?

 

36 mm or 38mm multiple carburetors from a *stock* 1000cc motorcycle
might be too small, because the actual displacement of a 1300cc Mazda
engine is 2800cc.

OTOH, the Mazda engine is turning *very* slowly, when the tachometer is
reading
10,000 RPM, the rotor is only turning 3333 RPM. Gawd only knows how
many cubic feet of air per minute flow through a set of Mikuni
motorcycle carbs and a carb that was meant for a Mazda.

Air velocity through the intake ports is very critical, and, when the
airflow is moving slowly, the carburetors don't mix the fuel and air
very well.

Mikuni and Keihin do make larger aftermarket performance carbs though.
Check the
Sudco International website for the 40 millimeter radial flat slide
carbs that have accelerator pumps.

I don't have time to calculate the airflow, and you're probably not
going to go through with this wild assed scheme anyway.

Notwithstanding the above remark, you would probably be better off
googling for a Wankel enthusiasts' website to see what other
enthusiasts might say.

The earlier peripheral port Mazda engines were capable of putting out
290 horsepower, with seriously crappy fuel mileage.

 

i'm not a hero on the rotary but, as i recall, the 1.1 liter rotary has a
substantially larger fuel/air flow
than a similar sized recip engine.
there are people who sell kits for this purpose.
you might inquire as a possible buyer and gain the information you need.
i think your idea is an ok one but get as much info from the
experts/commercial vendors
about this.
magazine "Grassroots Motorsports" advertising stuff has mazda experts
advertising in it.

good luck, sammmm

 

Its a shot in the dark but ask here. What Brian Crighton don't know about
rotary engines is not worth knowing

http://www.jpsnorton.com/history.asp

ken