I assume that with your clutch kit you got a new pressure plate. Does the RPMs raise quickly, but car is not accelerating as fast as the RPMs are climbing? If so, there is likely clutch slipping going on. Did you also have the flywheel turned? If not, you're asking for the clutch to slip again soon. The old clutch material is still embedded in the flywheel and can only be turned out, plus the flywheel is probably glazed over and slick. Its the same thing as putting new brake pads on old rotors..........always a bad idea.

Also, your Z will accelerate slow if the clutch isn't slipping when trying to accelerate in third gear at 2400 RPM, especially if you're mostly stock. Max bhp for that year was only 129 @ 6000 rpm and max torque of 127 @ 4400 rpm. I'd suggest downshifting and giver hell!

 

From a dead stop, hold the rpm at 3500, let the clutch out very slightly to load that sloppy old drive line. Mash down and when it gets to 4500 pop the clutch. You should light both rear tires. When you speed shift to second it should bark them again. When you hit third, you've completed the test. I say speed shift because full throttle power shifts are hard on those old 4 speed sinchros. When properly adjusted your clutch should begin to drag about 1-2 inches off the floor. I set mine at 2 because the hydraulic system seems to have plenty of travel. When your driving in forth at 50 mph you should be able to give it full throttle without any slipping when you press the clutch pedal down about one inch. Don't expect alot out of a stock cluth if you didn't have the flywheel resurfaced and a new pressure plate.

 

My 75 with a 4 speed doesn't engage until the clutch pedal is 3/4 out from the floor. Is this adjustable? I would like it about 3" from the floor when it engages. Is there an adjustment for the pedal distance? Thanks....

 

helpful to know year and model you are asking about.

 

I did say "my 75" and it's a 280z.

 

read your own post doesn't say a word about 280 nor 75
if you would really like answers that would help you and avoid flames give the following info when you post: year of car, n/a or turbo engine, stick or slushbox, digital or analog dash. Most of us can tell by the year what model you have ie 85T is a turbo z31. Z cars come in many flavors and they are all different. example 84,85,86 Z31's pretty comparable. there were changes in 87,88,89. in addition 300ZX can refer to two completly different cars the Z31 and the Z32. No mindreaders here the more info you can post the more likely you get a cogent useful answer. The cars with L engine (straight six) changed almost yearly from their introduction. A 240Z and and a 280Z have similarities but they can also have wide variance.

 

a 75 280 isn't a very fast car. a new honda or even a toyota (worst dogs to come off any lot) will smoke you in any gear.

Dear Ken when you jump into another post no one pays attention to what you say.

and you can't adjust a hydraulic clutch system except for free play

 

Guess I just thought the very first two words in my post identified I was speaking of MY 75 (1975 for better identification) and being posted in the Z forum would be enough to make it a 280Z. I will include in my signature for those who require additional information, the cars motor, transmission, production date, etc. Thanks for the lesson. As for flavor, it must be lime since the color is green.

 

Adjustable clutch rod at the slave cylinder may help ??

https://zcardepot.com/driveline/clut...rch=clutch+rod