Clutch or trans
#1
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Location: Williamsport, MD
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Clutch or trans
Sometimes when you shift gears it feels like the clutch is still engaged. So when you take it out of gear you feel the car surge. Also when under hard acceleration it is hard to get it in the next gear. It does fine at low rom's.
Any input is appreciated
Any input is appreciated
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#8
Staging Lane
Join Date: Apr 2015
Location: minneapolis
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I would first check and make sure the mast cyl resivoir for the clutch is full and then bleed the system just in case they didn't do a good enough job when they put the new engine in. doesn't make sense that it worked good before the new engine and now it is screwed up unless there is air in the system or they didn't shim your clutch right when they went back together... the upgrade kit is something that would be a good idea to do, but I haven't done it yet and still have no issues.. I am going to switch to powerglide or otherwise I would do it though
#10
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Join Date: Apr 2015
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I have read on here that tic performance or McLeod sells them.... another thing it could be but I doubt that it is, that the pilot bearing is bound up on the input shaft... happens sometimes when things aren't quite lined up right and you are in a hurry and pull it home with the bolts... hope it is not that though... then tranny has to come back out
#11
TECH Regular
PMC (philistine master cylinder) is a tilton unit modified for our cars, about $380. Sound like disengagement....get on jack stands, see if wheels turn with clutch depressed (in fear engine running). Might need shim under the slave...
#12
Me's thinks that if there isn't TOO much extra gap to compensate for, the PMC could eliminate the need for a slave shim. If the OE hydraulics are lacking, the extra volume that the PMC pushes will move the slave piston more, thus disengaging the clutch more effectively. No?
#18
Work from easy/cheap fixes to the bigger stuff, man. You definitely need to give this thing a proper bleed before anything else. And by proper, I mean it's going to take you an hour or so to get as much air out of that system as possible. A Motive bleeder or something along those lines would help you a lot. Otherwise you're going to need a helper and you'll be doing a lot of pedal pumping and cracking/closing of the bleeder screw. Too bad you didn't install a remote bleeder line when you did the clutch; but if you do wind up dropping the trans again I'd suggest you invest the $40 and install one then.
If a good bleed doesn't get things right, THEN start looking into the PMC (which would be a good investment anyway), dropping the trans, and all that kind of stuff. If you do any reading on the topic around here you'll quickly learn that an un-bled (or improperly bled) hydraulic system on these things can cause some pretty severe symptoms. Luckily, it's a pretty simple and cheap fix much of the time!
If a good bleed doesn't get things right, THEN start looking into the PMC (which would be a good investment anyway), dropping the trans, and all that kind of stuff. If you do any reading on the topic around here you'll quickly learn that an un-bled (or improperly bled) hydraulic system on these things can cause some pretty severe symptoms. Luckily, it's a pretty simple and cheap fix much of the time!
#19
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From what I'm reading in the post linked below, the PMC won't make up for clutch/flywheel shimming issues but the extra volume created by it will give the slave cylinder the hydraulic force it needs to fully disengage the pressure plate.
see post 18....https://ls1tech.com/forums/cadillac-...ve-spacer.html
see post 18....https://ls1tech.com/forums/cadillac-...ve-spacer.html
#20
From what I'm reading in the post linked below, the PMC won't make up for clutch/flywheel shimming issues but the extra volume created by it will give the slave cylinder the hydraulic force it needs to fully disengage the pressure plate.
see post 18....https://ls1tech.com/forums/cadillac-...ve-spacer.html
see post 18....https://ls1tech.com/forums/cadillac-...ve-spacer.html
Last edited by wes8398; 07-05-2015 at 02:56 PM.