RotaryEvolution

iTrader: (30)

now i know there is a difference between the weight of the rotors in 1st gen 13B engines and the 2nd gen engines, i need to know if there was any size variances of the rear counterweight.

in short the S4 hybrid engine i removed had a early 1st gen 1029A rear counterweight on it, all i need to know is if the 2nd gen counterweights work fine in spacing of the clutch disc in the 1st gen transmissions since this will have a S5 T2 engine in it with a 1st gen transmission for now.

Siraniko

iTrader: (13)

Im not sure if they had #'s. I will check my pile of junks tonight.

RotaryEvolution

iTrader: (30)

yea all counterweights have a stamping number

1st gen - 1029A
2nd gen S4 - N327
S5 and S6 - N351

i just don't have any spare S5/S6 counterweights to compare if they are the same height. i'm fairly sure they all interchange, i just wanted to be sure.

werd

i just got a fidanza flywheel and need a counterweight. what counter weight should i get. is there a light weight kind or should i just get a factory one. my car did not have a counter weight so i did not know i needed one. any help ?

REVHED

The spacing on the counterweights are the same.

trochoid

iTrader: (6)

Match the counter weight to your engine, which you neglected to post.

werd

the engine i have is a 13b from a 86 gxl / how do i match it to my engine.
my motor did not have one. it just had a giant flywheel.

trochoid

iTrader: (6)

You need the S4 counter weight that came on the auto tranny equipped cars. On the manual trannys, the counter weight is cast in as part of the flywheel.