Clutch Question

[Warpath]

Hello All,

I have a question about my clutch. I am currently doing a total build up of my 87 supra turbo. (engine, trans, etc..) I currently have the engine & transmission in the car with the pressure plate bolted to the fly wheel. The clutch slave cylinder is not hooked up. When i turn the crank the pressure plate and the clutch rotate with the crank but the transmission input shaft does not rotate. The trans is in neutral. So i'm sure i did something wrong or is this normal. I'm sorry if this is a dumb question, i just want to make sure i get this right.

Thanks,
Jim

 

[92TealSupra]

If you put it into gear does anything else happen?

 

[Warpath]

If you put it into gear does anything else happen?

Thanks for the reply.

No, If i put it in gear the input shaft still does not rotate with the crank. Now before i installed the trans, you could turn the shaft with the trans in neutral & not with it in gear.

 

[92TealSupra]

Thanks for the reply.

No, If i put it in gear the input shaft still does not rotate with the crank. Now before i installed the trans, you could turn the shaft with the trans in neutral & not with it in gear.

Hum, this seems strange, I am not to familiar with the Supra's 5-speed system. I am pulling my Motor and r-154 out of my '88 to swap into my '89 if I learn anything along the way or can think of something I will let you know!

 

[Warpath]

Hum, this seems strange, I am not to familiar with the Supra's 5-speed system. I am pulling my Motor and r-154 out of my '88 to swap into my '89 if I learn anything along the way or can think of something I will let you know!

Appreciate it!

Anyone else??

 

[SySt]

Do you mean your output shaft is not rotating with the engine? The output shaft really shouldn't rotate with the engine if the transmission is in neutral. Obviously when you put the transmission in gear the output shaft should rotate with the engine. It really seems there are only two possibilities for your problem. Either something inside the transmission is broken or the clutch is slipping really bad (or maybe the clutch is not engaging at all).

 

[92TealSupra]

Do you mean your output shaft is not rotating with the engine? The output shaft really shouldn't rotate with the engine if the transmission is in neutral. Obviously when you put the transmission in gear the output shaft should rotate with the engine. It really seems there are only two possibilities for your problem. Either something inside the transmission is broken or the clutch is slipping really bad (or maybe the clutch is not engaging at all).

See this is what I thought he meant. I was unsure and I hope he means the input which is the one to the engine. The output is there it connects to the drive shaft.

 

[Warpath]

Do you mean your output shaft is not rotating with the engine? The output shaft really shouldn't rotate with the engine if the transmission is in neutral. Obviously when you put the transmission in gear the output shaft should rotate with the engine. It really seems there are only two possibilities for your problem. Either something inside the transmission is broken or the clutch is slipping really bad (or maybe the clutch is not engaging at all).

No, I mean the input shaft that inserts into the pilot bearing. My car is in the process of being put back together. When i mated the transmission to the engine, I then bolted the pressure plate to the fly wheel making sure the clutch was facing the right way. I then proceeded to turn the crank to check to see if everything was aligned (trans was in neutral). what i expected to see was that the input spline of the trans would turn with the rotation of the crank. Instead what i saw was clutch & the pressure plate rotating while the transmission input spline remaned still.

I hope i made more sense this time.

-Jim

 

[Warpath]

Bump for teh helporz.

 

[SySt]

I can not see how the input shaft would not spin with the engine if the splines are inserted into the clutch disc splines. There is also no way the transmission would fully bolt onto the engine if the input shaft did not slide into the clutch disc splines... So unless you do not have the transmission installed flushly to the engine, I can not see how you could have any issue. Not to call you stupid, but did you forget to put the clutch disc in between the pressure plate and flywheel?

 

[Guyana00]

Engine--->flywheel--->pp housing--->diaphragm--->pp--->disc--->splines/input shaft

If you say all the green ones are moving and it stops at the red, the input shaft. Then the problem is with the disc itself, maybe the hub is torn. Or the pp isn't clamping and turning the disc.

You'd probably have to take the tranny back off and see if the disk is actually turning. Go from there.

 

[SySt]

Engine--->flywheel--->pp housing--->diaphragm--->pp--->disc--->splines/input shaft

If you say all the green ones are moving and it stops at the red, the input shaft. Then the problem is with the disc itself, maybe the hub is torn. Or the pp isn't clamping and turning the disc.

You'd probably have to take the tranny back off and see if the disk is actually turning. Go from there.

Thats a good point. I wonder if he could have broken the hub off of the clutch disc by installing the transmission without making sure the splines on the input shaft and the disc lined up. I agree, at this point take the transmission back down, its not that big of a job.

 

[92TealSupra]

Thats a good point. I wonder if he could have broken the hub off of the clutch disc by installing the transmission without making sure the splines on the input shaft and the disc lined up. I agree, at this point take the transmission back down, its not that big of a job.

Just take the whole motor out! That is what I do I had mine out in 2 hours today Still takes me a long time to do it all by myself but hey I am getting it down.

 

[SySt]

Just take the whole motor out! That is what I do I had mine out in 2 hours today Still takes me a long time to do it all by myself but hey I am getting it down.

Don't remove the entire engine. You could EASILY have the transmission down with a jack and some basic hand tools. Probably take you and hour to remove and reinstall the transmission if you are mechanicaly inclined.

 

[92TealSupra]

Don't remove the entire engine. You could EASILY have the transmission down with a jack and some basic hand tools. Probably take you and hour to remove and reinstall the transmission if you are mechanicaly inclined.

Ha I like taking 7m's out.

 

[Guyana00]

lol, you may like it but don't tell him something like that when it doesn't help him.