Hi all,

 

I am relaticvely new to the site as I have recently aquired a highly modified nissan 300zx several months ago. It was previously on Piston heads for sale. A red nissan 300zx twinturbo manual that has had extensive work done to it with 2 dyno read outs. One for 454.4bhp and 475lbs of torque and another for 543.3bhp and 550lbs of torque.

 

I have recently uprated the gearbox as it was shot with one that can handle 800bhp. hid lights and 6 piston AP racing brakes and discs all round.

 

The problems started a few weeks ago...I noticed I was losing performance and the car started developing a low toned type of whining sound.on acceleration and decleration.I was concerned it was the 1st turbo (currently has 360 thrust ballbearing turbos) but no blue/white smoke to indicate this? performace levels I have to say must be around 330bhp! as even scooby's now keep up with me and m3's!

 

Also in regards to the clutch...

first and second are fine the power comes in as much as i have explained smoothly but, from third as i reach 4000 revs the car suddenly jumps up 2 thousand revs and then slowly brings power through with delay...

 

Can any help me with this as I am slightly conerned..also I think the clutch bearings may have gone as they are very noisy...ticky....all the time through the rev range?

 

Thank you for your help in advance.

 

Kash

Im no expert but id say your clutch is on its way out. Do you know what clutch is in there? Will have to be something fairly heavty to handle that kind of power. As for the powerloss, bring on the experts.

cheers

danny

I currently have an rps racing clutch Danny, I think I have a hefty repair coming.

 

Thanks

I would also say clutch, although could be an oil leak onto the clutch causing excessive wear/slippage but most likely a broken engagement spring or worn friction plate.

Thanks for sharing your thoughts

Also a thought, with the clutch slippin...can I damaged my lightened flywheel?

Clutch, could cause damage if you keep driving it to the point of slipping, just think how much heats been generated.

 

Noise wise are you sure its nothing mechanical, thrust bearing, gearbox prop bearing etc

To be honest, I dont know the answer to that.I have taken the car back to the engineering company who built it. I shall keep this thread posted on developments.