HELP!!! 2000 rpm vibration

Reply Subscribe

Thread Tools

Search this Thread

Aug 4, 2013 | 11:03 AM

NASTY98TA

Thread Starter

Launching!

iTrader: (34)

Joined: Jan 2004

Posts: 269

Likes: 0

From: Algonquin, IL

HELP!!! 2000 rpm vibration

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

Aug 4, 2013 | 11:35 AM

RezinTexas

TECH Fanatic

Joined: Jun 2011

Posts: 1,343

Likes: 8

From: Katy, TX

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

Aug 4, 2013 | 11:57 AM

NASTY98TA

Thread Starter

Launching!

iTrader: (34)

Joined: Jan 2004

Posts: 269

Likes: 0

From: Algonquin, IL

Motor

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.

Aug 4, 2013 | 11:58 AM

NASTY98TA

Thread Starter

Launching!

iTrader: (34)

Joined: Jan 2004

Posts: 269

Likes: 0

From: Algonquin, IL

Motor

Stock crank, I would hope they balanced everything.

Aug 4, 2013 | 03:44 PM

RezinTexas

TECH Fanatic

Joined: Jun 2011

Posts: 1,343

Likes: 8

From: Katy, TX

call and ask for the balance sheet.

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

Aug 4, 2013 | 06:18 PM

2000PewterT/A

TECH Fanatic

Joined: Jul 2011

Posts: 1,074

Likes: 2

Quote:

Originally Posted by NASTY98TA

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.

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.

Last edited by 2000PewterT/A; Aug 4, 2013 at 06:27 PM.