couter balancers
05-29-04, 02:38 PM
#1
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couter balancers
Is there any difference between the 12a and 13b counter balancers? I have an adapter kit for my fiberglass dune-buggy that originally had a 12a on it but have this 13b sitting here.
-Mark
-Mark
05-29-04, 03:26 PM
#2
Old [Sch|F]ool
If you mean the bolt pattern that goes from the rear counterweight to the flexplate/aftermarket flywheel, no. That never changed, to the best of my knowledge. (People put TII lightweight flywheels on 20Bs and on 12As, after all, and IIRC even the RX-8 engine is the same)
The imbalance is not only engine-specific but year-specific, depending on rotor weight. The counterweight must be matched to the rotors in the engine.
I am *assuming* that your adapter kit came with a flywheel meant to bolt onto the automatic's rear counterweight.
The imbalance is not only engine-specific but year-specific, depending on rotor weight. The counterweight must be matched to the rotors in the engine.
I am *assuming* that your adapter kit came with a flywheel meant to bolt onto the automatic's rear counterweight.
05-30-04, 03:35 AM
#3
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Is there a way to find out what the counter-balancer is supposed to go to? Is there a source for CB's for other engines?
The adapter has a re-machined VW flywheel with a RX center. The CB then bolts to the backside of the flywheel. The CB is removeable so I assume it is the balancer from an auto RX although I have never seen one to know for sure.
-Mark
The adapter has a re-machined VW flywheel with a RX center. The CB then bolts to the backside of the flywheel. The CB is removeable so I assume it is the balancer from an auto RX although I have never seen one to know for sure.
-Mark
05-30-04, 12:14 PM
#4
Old [Sch|F]ool
Manual transmission rotaries (not RX's, RX's are Subarus, I had one) had a one-piece flywheel/counterweight. Automatics had a separate counterweight that the flexplate bolted to.
05-30-04, 08:55 PM
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Like I would be talking about a Scooby Doo on an RX-7 forum...
The question I need an answer for is how to determine which counter-balancer I need for my 13b and where to find one if the 12a one is different.
-Mark
The question I need an answer for is how to determine which counter-balancer I need for my 13b and where to find one if the 12a one is different.
-Mark
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05-31-04, 02:40 AM
#8
Rotary Enthusiast
Originally posted by peejay
The 12A one *is* different.
Find out what year your 13B is. Then get an automatic counterweight for that year engine.
The 12A one *is* different.
Find out what year your 13B is. Then get an automatic counterweight for that year engine.
You have to get a Rx-4/ REPU unit since they use the same rotor weight as the GSL-SE cars.
John
05-31-04, 08:57 AM
#9
Old [Sch|F]ool
Originally posted by rhinor61
That does not hold true for the 84-85 GSL-SE 13b engine cars, cause they was not automatic GSL-SE made.
You have to get a Rx-4/ REPU unit since they use the same rotor weight as the GSL-SE cars.
John
That does not hold true for the 84-85 GSL-SE 13b engine cars, cause they was not automatic GSL-SE made.
You have to get a Rx-4/ REPU unit since they use the same rotor weight as the GSL-SE cars.
John
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