BMW Transmissions on SR20's - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

thom · 11-17-2022, 09:34 AM

I would like to make an update on my " project" .

Unfortunately after spending countless hours trying another gearbox , different mounts different gearbox oils and even adding sound deadening in the whole car, i went back to my old sr20 whining gearbox.

My main problem is that the gearset rattle sound coming from this gearbox on decelaration was just too much for a street car. I couldnt enjoy any ride!

After speaking with PMC they gave me zero help and i believe the problem is the balance of the flywheel in combination with the flex plate. I cant think anything else.

Also at the moment pmc have changed the flywheel for this swap and they have the ring gear on as one piece so you dont need to source for a flex plate.

Does this one have different weight and works better ? I will never know!

*brndck* · 11-17-2022, 10:18 AM

Quote:

Originally Posted by thom

I would like to make an update on my " project" .

Unfortunately after spending countless hours trying another gearbox , different mounts different gearbox oils and even adding sound deadening in the whole car, i went back to my old sr20 whining gearbox.

My main problem is that the gearset rattle sound coming from this gearbox on decelaration was just too much for a street car. I couldnt enjoy any ride!

After speaking with PMC they gave me zero help and i believe the problem is the balance of the flywheel in combination with the flex plate. I cant think anything else.

Also at the moment pmc have changed the flywheel for this swap and they have the ring gear on as one piece so you dont need to source for a flex plate.

Does this one have different weight and works better ? I will never know!

did you ever try getting the flex plate and pmc flywheel balanced as a unit?

thom · 11-17-2022, 10:48 AM

Quote:

Originally Posted by brndck

did you ever try getting the flex plate and pmc flywheel balanced as a unit?

This is something i never thought of doing to be honest !

Is it possible in a machine shop ?

*brndck* · 11-17-2022, 01:15 PM

Quote:

Originally Posted by thom

This is something i never thought of doing to be honest !

Is it possible in a machine shop ?

yes any machine shop that balances cranks or flywheels should be able to perform this.

i do like that PMC finally revised their flywheel to include the ring gear. Wish that had been an option when i ordered my kit from them.

11-17-2022, 09:34 AM	#1
thom Join Date: Jan 2018 Location: Greece Posts: 26 Trader Rating: (0) Feedback Score: 0 reviews	I would like to make an update on my " project" . Unfortunately after spending countless hours trying another gearbox , different mounts different gearbox oils and even adding sound deadening in the whole car, i went back to my old sr20 whining gearbox. My main problem is that the gearset rattle sound coming from this gearbox on decelaration was just too much for a street car. I couldnt enjoy any ride! After speaking with PMC they gave me zero help and i believe the problem is the balance of the flywheel in combination with the flex plate. I cant think anything else. Also at the moment pmc have changed the flywheel for this swap and they have the ring gear on as one piece so you dont need to source for a flex plate. Does this one have different weight and works better ? I will never know! __________________