slave cylinder problems
Thread Starter
Teching In
Joined: Aug 2006
Posts: 7
Likes: 0
From: hattiesburg, Ms
slave cylinder problems I have put 3 slave cylinders in my car in the last week. about a month ago i replaced the master cylinder with a ram adj. master cylinder and a z06 gm slave cylinder. 3 days ago my slave cylinder went out and i replaced it with another z06 gm and i replaced the clutch with a ram hd stage 4 and properly surfaced my flywheel. The system never bleed right so I replaced the ram master cylinder with a new stock GM master cylinder, got everything right and 100 miles later the slave blew apart again, yesterday I bought a stock slave from O'reilly's put it in and it lasted all of three miles before it blew apart. Everything is new and the clutch fingers are not bent or binding, any help would be greatly appreiciated.
By the way H/C/I full bolt on car
Thanks
By the way H/C/I full bolt on car
Thanks
TECH Addict
Joined: Nov 2005
Posts: 2,379
Likes: 2
I wonder if your flywheel and pressure plate are surfaced properly, it's a stretch but if your flywheel is below the necessary thickness, you may be overtravelling the clutch in that department. It's hard to tell once it's installed just how much travel you are actually getting inside the assembly until it's all bolted up.
Check your pilot bearing and make sure you have the alignment dowels in your bellhousing. How exactly are the slaves failing?
I had the same problem and it ended up being that my trans had the wrong length input shaft. (Had an LT1 shaft.) Not a common problem, but a few people up here have run into it.
I had the same problem and it ended up being that my trans had the wrong length input shaft. (Had an LT1 shaft.) Not a common problem, but a few people up here have run into it.
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It sounds like you are over traveling the slave and its seals will not take that. The stack up of the clutch is very suspect here. Although it is possible that a shorter LT1 input could allow the slave to crap out because it would not be supported in the pilot bearing. I find this a little more remote because the carnage would not be so immediate as you have found.
There's about an inch difference between them.. check out this thread....
https://ls1tech.com/forums/showthrea...t+shaft+length
I could predictably blow up a slave cylinder with a hard shift from 1st to 2nd over 4k RPM before I fixed my problem. I also had a slave blow up on me within 5 miles of installing it. The sleeve that surrounds the input shaft would show witness marks from the input rubbing against it, and would usually completely crack from the base of the slave. You'll know your input shaft is too short if the splines on the shaft don't clear the slave cylinder. Calhoon's right, it's more likely that the slave is over traveling, but it's worth looking at.
https://ls1tech.com/forums/showthrea...t+shaft+length
I could predictably blow up a slave cylinder with a hard shift from 1st to 2nd over 4k RPM before I fixed my problem. I also had a slave blow up on me within 5 miles of installing it. The sleeve that surrounds the input shaft would show witness marks from the input rubbing against it, and would usually completely crack from the base of the slave. You'll know your input shaft is too short if the splines on the shaft don't clear the slave cylinder. Calhoon's right, it's more likely that the slave is over traveling, but it's worth looking at.
On The Tree
Joined: Jan 2006
Posts: 115
Likes: 0
From: Jersey
Did you have the new Master before the slaves started over running??? Those adjustable can be tricky to dial in on some apps. Maybe where you have the pedal travel to release set is over extending it? Get some info on the release/feel settings from Ram to find a base setting of some kind. I'm just throwing ideas out here...Good Luck
Thread Starter
Teching In
Joined: Aug 2006
Posts: 7
Likes: 0
From: hattiesburg, Ms
i did have the ram master on one time but could not get it to bleed out the second time so i purchased a new gm master.... i blew the 4th slave last night after 90 miles again... now that i think about it every time it has went out was after high rpm shifting(over 5500)... so i am going to pull it tommorrow and check the input shaft and the pilot bearing.... at least i got a kill every time i hammered on it..one time a 02 zo6 the other 3 times my slave cylinder..hahaha but seriuosly thanks for all the help... i will keep everyone posted with progress
Thread Starter
Teching In
Joined: Aug 2006
Posts: 7
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From: hattiesburg, Ms
well i dropped the tranny today... it has the right inputshaft and i looked at all of the slaves to see if they were broke like yours but there is no visible damage or cracks like some of the pics on here... the pilot looks a little wore so i am going to get a new one.. the only other thing i can think of is the place i bought my stuff from said that they have had a few problems out of the ram clutches having to much slack when the clutch disk is on the input shaft.. i placed the disk on the shaft today and i could move it about 3/16 inch total travel from side to side.. if anyone knows if that is too much your help would be greatly appreciated...
Thread Starter
Teching In
Joined: Aug 2006
Posts: 7
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From: hattiesburg, Ms
By saying blew apart I mean - Clutch fluid was pouring out of the bottom of the bell housing, you could fill the reservoir and press the clutch and watch it pour on the ground, But the slave cylinders are not cracked. The input shaft has no play, the clutch disc sitting on the shaft has 3/16 of play, moving back and forth(slack). Thanks everybody, for all of the help. I will keep you posted on the progress.
I'm not really sure on this one, but I do remember my clutch disc fitting pretty tight on the input shaft. Maybe the splines on your input or clutch disc are worn? Anyone have more info?
Sounds to me like the slave is being over travelled still.
Sounds to me like the slave is being over travelled still.
