chrisacura

I have a 1993 sc300 that i have purchased an OBX underdrive crank pulley for on ebay. I cannot find the belt size for the new pulley. can anybody help? I have tried the search function but have not found the number yet. The pulley part number is pp10472-1 if that helps.

LSEGHATCH

Did you buy it for a sc300 or just for your sc300? If it's designed specifically to fit a sc3 then it would be the same belt as stock.

ishootstuf

iTrader: (1)

I'll give you the belt size... later, but take my advice now and THROW THAT PIECE OF CRAP AWAY - assuming it does not have a damper.

Shortly after I installed one on my stock 150k or so 95 SC300, all of the crankshaft to flexplate bolts rattled out, and both the front and rear main seals started leaking. There was NO noticeable difference in power, and the engine accelerated rough - more vibration.

shern

iTrader: (6)

Please read. That damper is on there for a reason.

http://www.atiracing.com/products/da...mper_dinan.htm

aka paco

iTrader: (15)

ishootstuff, dang that sucks!!!!! my red SC had some kind of aftermarket crank pulley with no dampner on it, i never had any issues with the car, i have heard people say i can do some damage over time, never heard any horror stories like yours! that sucks..

ishootstuf

iTrader: (1)

I really don't have any other explanation. I don't see how those bolts could be fine for 150k, then suddenly decide to snap and or come lose. I know there are those who would argue that it wasn't the pulley, and to those people I say - it's not worth the money saved by not using OEM or ATI when you have to replace a motor. It's too coincidental for me and I will NEVER install one of those again.

supralative

iTrader: (4)

DO NOT USE UN-DAMPNED CRANK PULLIES
On our customer cars we do, its either factory or ATI.

TLDriver

iTrader: (4)

same here.. My car has had it for a while now and no issues.
Off topic but how does a light weight flywheel effect the engine? or would it cause any issues similar to the crank pulley?

ishootstuf

iTrader: (1)

OK, so now that you have hopefully read why you should pitch that thing... I'll give you the belt I used should you decide to not take the wise information provided here.

I show two part numbers on the belt:


6K760

and

7609J9EB

chrisacura

thanks for the info. do not think i will be installing the pulley. Will return for an ATI. are the belts the same for the ATI?

supralative

iTrader: (4)

ATI is an overdrive pulley so it will need to be the next size up
just ask for a factory size and tell him you need the next size up

soarer13oy

iTrader: (13)

There was a big discussion about how the pulleys that do not have a damper will mess up your motor on supra forums. Unorthodox's representative got flamed for trying to deny that their product causes damage.