ok i finaly got my car up and running with the new engine put in. sounds great its a little loud but thats ok.. but im having some driving issues 1 when i build speed around 50 to 60 i get this crazy vibrating noise from my drive train now the drive shaft is brand new and everything is bolted up tight so could it be my rear end or my tires and 2 when i let off the gas the jerks real hard a couple of people say that its normal but im not sure can anyone give me some advice on what to look for its an 86 rx7 with a 89 t2 engine and tranny

 

does the vibration go away at higher speeds or just get worse?

And your bumps have been removed... bumps are forbidden here in the 2nd gen technical section... and frankly two bumps in less than 10 minutes makes you look like a spoiled child who thinks they are more important than anyone else and it also makes it look like there were multiple replies already to solve your problem.

 

well the vibration starts when i get up to about 40 miles an hour but i cant fell the vibration i can hear it and its loud so i dont know if its comming from the tires or if its the drive train i put new tires on there so im not sure whats going on

 

The vibration could be a number of things anywhere in the drivetrain.

Driveshafts are common. If the shaft vibrates, try removing it, turning it 180 degrees, then reinstalling.

Check your wheel bearings, and the balance of your wheels and tires. It's not unusual for balance weights to fall off.

As for the jerking, it's probably a TPS that's out of adjustment.

 

thanks arron i will try to check the drive shaft today now for the tps how do i adjust that? and where is it located i dont have my fsm with me oh also i have a os giken twin plate clutch and when i press in the clutch i can hear metal rubbing together is that normal or is that an issue?

 

your question about the clutch would probably be answered best in the race section...

 

ok

 

Instructions regarding the TPS are in the Haynes and FSM (see FAQ). Also you could search for "tps adjust".

No idea on the clutch. May be a failing throwout bearing.

 

yea i was looking for the tps and i couldnt find it on my car to try and adjust it

 

It's on the front of the throttle body. Black box with two plungers.