ok people as some of you know my other motor wasn't good so i bought a used motor which came out an 370z 2013. i did the swap myself and everything went smooth. My clutch was in good shape and didn't have the money to buy new clutch so i used the same one clean with flywheel clutch plate, pressure plate with carburetor cleaner. also replaced the throw out bearing and slave cylinder with the OEM one. after putting everything together clutch is slipping the paddle feels alot smoother then it use to be. i never slipped on me before maybe it did when the clutch was too hot. i bleed the clutch couple times and its getting better and better but its not the same like it was use to be with the other motor do you guys think the air bubbles in the clutch line can cause this? yes its the same clutch, flywheel and pressure plate. car only had 22k miles on it. there is no grinding or anything I'm able to get into all gears but sometimes its not moving fast like it should be. the clutch just slips and there is burring smell does it need some time. what should i do any help will be appreciated.

 

You cleaned the friction disk with carb cleaner!?@#

 

Yes. I guess that's where I made the mistake.

 

The friction disk is made from porous material. For the same reason you don't want to get brake fluid on brake pads, friction materials should not be contaminated either. It's ok to clean the fly wheel/pressure plate as that's steel or some alloy.

Maybe once all the carb clean has been burned off from driving, somewhat normal clutch operation will return. On the other hand, the disc itself will probably be glazed from all the slippage by then.

How badly is it slipping?

 

Not bad if I drive it really hard that when I slips normal driving it is fine.