Yet another clutch question

[terry.m]

I once read a thread about this issue that I'm having but for the life of me cannot find it.

I apologise if this is another spammed thread... :Oops:

Here is my problem:

On 2 occasions now, I've reved to around 3000 - 4000 rpm, let the clutch out and...nothing! The revs go up to 6000+rpm but I'm not going anywhere. The stupid thing is that it doesnt happen all the time.

I tested and tried taking off in 5th at 1500rpm and the engine began to stall, this tells me that there is nothing wrong with it. There is no crunching in any gears except for the infamous 1st to 2nd cold change.

I saw a thread where a guy had a similar problem. He cursed hydraulic clutches and said that he will change the clutch fluid. Nothing else was said after that. Is the fluid a problem?

Is this a common problem with hydraulic clutches or is my clutch simply on the way out?

Is there any adjustment that can be done to cure it?

Pls help before I fork out $400 and spend a hole day changing the clutch

[NIZR34GTT]

Check the slave cylinder out .The piston may be sticking you can check this out by pulling the rubber boot back a little to see if the piston has returned.

It sounds like it may be the culprit.Buy a new one they are reasonbly cheap.It only takes about 1/2 hour to put a new one on,then you have to bleed it so change the fluid when you do that.

[RON-15H]

i have the same problem.......

its your clutch is slipping..

my car takes off fine but when changing gears the engine sound is diffrent and when ur in 2nd or 3rd and the comes on boost the engine will sound diffrent... if you look at your rev it will sort of jump it will go back and then forward

if your in 2nd and you floor the car it will just rev out.... the gears are slipping this started happening last week i dont drive my car as im waiting for my mechanic to come back and replace my clutch and pressure plate.

[SHUTO-BOY]

when i had my stock clutch, and when it slips-usually the clutch would just get worse until the point where u rev and the car doesnt even move.

So make it top priority to replace your clutch with a stronger one. Get a 9 puck(600-800bucks?) or even better a second hand twin plate clutch. OS Giken is very good, it drives so easily youll be very suprised and mine was a solid centre twin. I got mine for 1300(if i remember correctly) second hand.It was in good condition too, just change the thrust bearing.

[terry.m]

Thanks guys,

I have f***ed up anyway with my master cylinder.

Originally I had put in Shell synthetic gearbox oil and a Nulon additive. The 'slipping' had only been since I put the Nulon additive in. I heard that there is a possibility that the synchros may be slipping because the shit is just too damn slippery. So, I changed the oil with Castrol VMX80 (Sorry Redline lovers...I dont have $110 spare at the moment).

I also decided to bleed the clutch and all hell broke loose. The clutch pedal went straight to the floor. I did a search and someone else had the same problem, said that the piston has a tendancy to travel too far and contaminate with shit when bleeding. So, I took both the master and slave cylinders apart and managed to F**ck up the bore and piston of the master. $140 later the bore is now sleeved and the piston fixed. I put it all back together and am still unable to maintain pressure in the system. I am now suspecting the slave cylinder (It better be cause I'm ready to go spastic!)

I've had a guts full...haven't been able to drive the car for a week....grrr!

[terry.m]

Thanks guys,

I have f***ed up anyway with my master cylinder.

Originally I had put in Shell synthetic gearbox oil and a Nulon additive. The 'slipping' had only been since I put the Nulon additive in. I heard that there is a possibility that the synchros may be slipping because the shit is just too damn slippery. So, I changed the oil with Castrol VMX80 (Sorry Redline lovers...I dont have $110 spare at the moment).

I also decided to bleed the clutch and all hell broke loose. The clutch pedal went straight to the floor. I did a search and someone else had the same problem, said that the piston has a tendancy to travel too far and contaminate with shit when bleeding. So, I took both the master and slave cylinders apart and managed to F**ck up the bore and piston of the master. $140 later the bore is now sleeved and the piston fixed. I put it all back together and am still unable to maintain pressure in the system. I am now suspecting the slave cylinder (It better be cause I'm ready to go spastic!)

I've had a guts full...haven't been able to drive the car for a week....grrr!

[paulr33]

hope u get it sorted

[NIZR34GTT]

Thanks guys,

I have f***ed up anyway with my master cylinder.  

Originally I had put in Shell synthetic gearbox oil and a Nulon additive. The 'slipping' had only been since I put the Nulon additive in. I heard that there is a possibility that the synchros may be slipping because the shit is just too damn slippery. So, I changed the oil with Castrol VMX80 (Sorry Redline lovers...I dont have $110 spare at the moment).  

I also decided to bleed the clutch and all hell broke loose. The clutch pedal went straight to the floor. I did a search and someone else had the same problem, said that the piston has a tendancy to travel too far and contaminate with shit when bleeding. So, I took both the master and slave cylinders apart and managed to F**ck up the bore and piston of the master. $140 later the bore is now sleeved and the piston fixed. I put it all back together and am still unable to maintain pressure in the system. I am now suspecting the slave cylinder (It better be cause I'm ready to go spastic!)

I've had a guts full...haven't been able to drive the car for a week....grrr!

I will take the diognostic fee if it is the slave cylinder.