K-Tune

iTrader: (26)

are they the same?! the flywheels are different OD and weights, but the rotors are the same weight.

they DO have different part numbers.

could using an N/A on a turbo motor/flywheel cause vibration?

87 t-66

iTrader: (133)

they are the same. they DO NOT have different part numbers

K-Tune

iTrader: (26)

crap, was going by the mazdatrix part numbers. my imbalance must lie elsewhere then.

87 t-66

iTrader: (133)

there are s4 and s5 part number differences...just not NA and turbo part number differences

K-Tune

iTrader: (26)

ah..heres one thing i noticed tho, i may have a GSL-SE rear counterweight which does posses a different part number.

however i used that counterweight on this motor before with NO vibration problems. the only things changed are from an N/A rb flywheel to a turbo ACT flywheel, as well as a mystery clutch disk and JDM transmission.

it vibrates with the clutch IN or in neutral OR in gear. and only over 6,000rpm.


:edit: http://www.mazdatrix.com/faq/Rcounterweights.htm are the numbers the actual weights of the counterweights?

if i do in fact have an older 13B weight, how come i didnt have a vibration with the other flywheel/clutch/trans setup?

K-Tune

iTrader: (26)

did more digging, the older 13b does indeed have heavier rotors, sent an email to mazdatrix to see if they have on record which weight i purchased a while back.

HOPEFULLY thats what it is!


(still dreading dropping the trans..lol)

K-Tune

iTrader: (26)

on a hunch went and took off the clutch fan, vibration still there :[ so now i wait and find out if its my mistake or a parts mistake.