NASTY98TA

iTrader: (34)

Hey everyone, hoping someone can help. I have a 98 TA with a freshly rebuilt motor. It's got a oreillys stock replacement harmonic balancer, new spec stage 3 clutch and steel flywheel, Magnaflow exhaust and a mail order tune.

Whether the car is in neutral or gear, it has a vibration thoughout that can be felt through the steering wheel. I got quiet a bit of piston slap on startup and worried it could possibly the motor.

Any thoughts?

Thanks
Brian

RezinTexas

what motor? what rotating assembly? was it balanced? who did the build?

NASTY98TA

iTrader: (34)

347 ls1 block with 243 heads. Mahle pistons, stock rods and arp rod bolts, motor has 222/224 comp cam. Opel engineering in Schaumburg, Il was the engine builder.

NASTY98TA

iTrader: (34)

Stock crank, I would hope they balanced everything.

RezinTexas

call and ask for the balance sheet.

Also, did they re-size the rods for the ARP bolts?

2000PewterT/A

I know Ted at Opel and they are located in Streamwood not Schaumburg. He machined my block and balanced my rotating assembly, I built the motor. He provided me with the balance sheets and was very helpful, call him up or bring the car to him and he should help you out. I know a lot of people in my area who use Opel with no issues and they have a good reputation with the sportsman racers around here so I would be very surprised if something was wrong with the motor. Keep us updated.

NASTY98TA

iTrader: (34)

I called Ted at Opel, and he said everything was balanced. If I can't figure it out, I am going to swing by and have Ted check it out.

garygnu

.it could be a bad plug or loose plug wire.any SES code lites ?

NASTY98TA

iTrader: (34)

Looks like programmer turned off misfires, everything reads 0

SilverSS

iTrader: (30)

Mine had a vibration at idle up to 2000rpms and it ended up to be the clutch assembly out of balance. Spec 3+