mk, heres the deal. got an 85 gs, bought it about a month and a half a go(not running-engine not carbon locked was told it needed a new carb-so...), put demon carburetor- road demon jr 525cfm, rb intake manifold, rb headers, and the rb holley throttle cable bracket- needed modifying, and im approaching the crank-it-up-and-hope-for-the-best date, and was just wondering if anyone else had used this setup, what kind of power they were putting out and any problems/tips and tricks they could offer...thanks guys...and gals!

 

Aren't demon carbs a variable venturi setup? I've always been tempted to try one of those on a rotary... definitely post how it works out.

 

I was very close to using one that I had but ended up selling it. The guy I sold it to put it on his Rx2 and he absolutely loves it. I havent seen it on the car or heard it running but he's happy! Try an Edelbrock, thats a carb you will absolutely fall in love with.

 

I have never seen a demon carb on a rotary but ****, that thing will probly run hard once it gets running... i have only seen demon carbs on small and big block chevy's and they run real hard!!! nice to hear about some one putting it on a rotary!!! post up some feed back when u you get it running

 

ha....sweet. so looks like this is new territory? thats cool, the only thing really holding the big day away is two exhaust studs...theyre bent and rusted somethin fierce haha, and i cant thread any nuts on past like 2 threads, so does anyone know of any tricks on getting them out of the housing? other than welding the nuts to the studs and busting them loose that way...ideas?
but yea i hope it runs like i hope it will, definitely keep you guys posted...

 

Been there done that. Mine had a sticky throttle plate issue, no support from the dealer or manufacturer. Sitting in a box in my garage now.

 

how did it run though? did you attempt to fix it? who did you buy it through?

 

Not new territory. Speed Demon 575 (not jr.) on a 13B 4 port. Cranks instantly. I MEAN RIGHT NOW! Great throttle response. No bogging. No complaints. I went with the manual choke and mechanical secondaries. Takes a little rigging to adapt new throttle cable because the alternator is in nearly in the way, etc. but nothing major.

 

Care to share the setup info for that Speed Demon 575 Mr. Grimes? Jetting, intake manifold, fuel pressure etc? I'd be interested to know more details. Thanks.