MountainDew67

I just bought a rotary powered car

What kind of horsepower should I be estimating. Its a 12a with a aftermarket intake(cant say what it is right now,but definatly aftermarket and polished chrome) and aftermarket Holley carb(cant say cfm,I guess assume average for a mild setup). Exhaust im not sure, looks like 2 pipes I believe 2"s into a 2.25 outlet to one muffler(Muffler stuff is hiding, didnt get under the car to inspect clearly) Other than that, its a 1650lb -1700 lb car, should be fun.


As of now, when under acceleration, the car hesitates...any thoughts on spark or carburator? What should I check first, I do have access to a brand new holley 600cfm, should I attempt that first?

There is a oil leak on the first housing from the back of the car. The housing closest to the pulleys. Is there something I can do to fix this, tear apart? I need to wipe clean, start it up, and watch for the leak to insure its there first, but I believe it is coming from in between the housings.

BMS2004

1650lb huh? so what you have just a seat in the car? sorry had to pick on you. with stock port the most you could prolyl hope for is like 150hp. the leak is prolly the dowel pin leak. the hesitatation is prolyl anything you mentioned. stay away from the holley....for a stock port 12a too big.


the search button is in the upper right hand corner....just in case you didn't know

Rx-7Doctor

iTrader: (13)

Wel depending on what exhaust system it is and what the carb is jetted at, you are probably making between 140-155hp max unless its a ported motor. As far as the weight its
about 2300-2600lbs depending on what year and model. Concerning leak, only thing i recommend trying is permatex's spray sealant that is supposed to work it's way into crevices
and seal, this is very common on rotaries to leak at that front housing. rx7doctor

MountainDew67

Vw bugs only weigh 1650-1700lbs. Rotary engine is 40lbs heavier. Actually the car has no interior but front seats, not sure if it will stay that way or not. Adding water and a radiator, probably another 30lbs, radiator is sorta light and aftermarket but water weighs 7 lbs per gallon aprox. if I remember correctly.

Holley is no good, what would you recommend, im going to premix oil to gas so theres no OMP needed. If a OMP is easy to install, Ill have to look into that.

Rx-7Doctor

iTrader: (13)

It's not a Vw. minimum weight is around 2350 lbs. As far as carbs, i personally like side drafts such as mikuni and webers, some guys use carters which are more forgiving than holleys. Depends on what you want to spend. rx7doctor

MountainDew67

Im so sorry, no wonder you guys are questioning the weight so much. This is a 67 vw bug with a 12a. I do apologize!!!

kettlman

iTrader: (2)

cool. need to see some pics. rotary bugs are the only way i like them. i'd go with a side draft weber for that one. but if you got a holley on it right now and you have hesitation. you can fix it. it it at the begining or when the secondaries open? and is it vacuum secondaries? or mechanical?

anyways check your primary accelerator pump cam. i've found that the green one works best. they are easy to change, just one screw. and then learn how to tune the springs.

MountainDew67

Im physically going to have the car saturday morning, I left a deposit on it. I think im gonna put the new holley I have already on it, just to see if its a little better,if it is, probably needs different jets/tuning/other and I will tinker with it, but not gonna spend a million years trying to fix it as a new carb IMO is the way to go, start with a new platform that is so important on this engine. I may be switching to another brand tho.Im hoping to find out the carb is a 650 or higher so I can see if the smaller holley does a little better.

I have a Borla muffler in the garage, ill probably throw it on for kicks. I had a slant six Mopar behind this borla (less than 100 miles) and it sounded like a V8 AT IDLE. This is totally different engine but curious of the sound. This is going to be an adventure.

BMS2004

sounds like a very cool car definately post pics. IF this isn't you DD by all means tinker it it after all it is your car. The only thing is will the holley bolt up to the intake thats on it?

MountainDew67

The car has a holley on it now, just wondering the condition of it, as the guy said he didnt drive it much because the car its self needs to have a good look over before daily driving it(did test drive it for maybe 2 miles, which isnt long enough to check the water setup,it didnt leak,but it may spike)....back to the holley...2 owners ago put the car together, didnt really drive it, didnt want his son to drive it, so finnally sold it to the guy I bought it off of who doesnt drive it either. So that carb has done sitting for atleast 1.5 years with on and off start ups. So the ? is will the holley bolt up, yes, the holley will bolt up to the intake! I cant wait to tinker with it, once the power smoothes out, I can get a real idea of how this thing is gonna drive. Im assuming it should run in the mid 14s atleast, but if it dont, I still have a rotary bug which will be fun. Ive been doing alot of searching on here and a few of you guys are going TII with your 1st gens. Well, being that mine is originally a carb setup, im wondering about the wiring to install a TII into my bug with stock ECU. I would only imagine it would be easier to install into my bug than your first GEN as I dont have to full with changing tranny/driveshafts/motormounts/etc. Im not a wiring guru, but this may be a topic very soon that I ask about peoples opinion.
Thanks

FB II

i guess it wouldnt be too hard if you get a stand alone ecu setup. i'd just carb the mo'fo.