patman

iTrader: (3)

simple question...are NA and TII counterweights (the one in the frontcover) the same? i just built my high comp TII and have a vibration..wonder if this has anything to do with it?

thanks
pat

patman

iTrader: (3)

ps..i used the same series (s4) na rotors, with the counterweight, eshaft, and all the rest from the TII engine.

WAYNE88N/A

I think they're different, I've always read that the counterweights are unique to the specific rotors (for instance, if you swap in a set of n/a rotors to a turbo, you need to keep the n/a counterweights, front and back, with 'em)...

Project84

they're different, just like the rears are different.

Net Seven

iTrader: (5)

S5 rotors are same weight, so same counter weights. The rotors just have difference compression but that doesnt affect the weights.

Sesshoumaru

iTrader: (1)

counter weights must match the rotors

at least you dont' have to tear the engine apart.

make sure to match up your flywheel correctly too

RotaryResurrection

iTrader: (8)

Counterweights are specific to SERIES, not model (turbo or NA).

All 86-88 ctwts fit all 86-88 models, turbo or non, for example. This applies to front and rear (automatic ctwt or manual flywheel w/integrated ctwt).


Why else do you think turbo aftermarket flywheels come with stock automatic NONTURBO rear ctwt's?

The weight of all rotors in a series is the same. Compression ratios do differ, however.

Net Seven

iTrader: (5)

Exactly what I said

RotaryResurrection

iTrader: (8)

Right, but I figured that in light of contradictory responses from some members here, they might trust the word of an engine builder over all others.

patman

iTrader: (3)

ok..thats what i figured...time to go hunting for other causes of vibrations...

thanks

pat