Hydraulic Clutch - ZR-1 Net Registry Forums

LGAFF · 01-12-2020

So I picked up a RAM Hydraulic clutch for a 93-95 ZR1, of course I have 90, 91, 92.... am hoping to put it in the 90. I assume all I need is a larger diameter guide tube to make this work. I have a 96 trans in my basement... so assuming this is a simple swap.

Got the setup for $250 so rolled the dice figured nothing to lose

Modified Bell housing came with....

Thoughts?

LGAFF · 01-12-2020

By hydraulic clutch referring to throw out bearing obviously

Sent from my iPhone using ZR-1 Net Registry

A26B · 01-13-2020

Measure the id of the RAM HRB (Hydraulic Release Bearing). Small id for late style transmission is about 1.315" & early style is about 1.375". Large i.d., early style actually runs into 1993 model year with no specific VIN cut off, so you may want to measure before you start swapping guide tubes.

If the RAM Clutch you obtained is for the 93~95, the included HRB would likely be for the small dia guide tube, so you will likely need the smaller tube for your 90, not a larger tube.

You might check into the procedure for shimming guide tubes when swapping around. The tube also hold the input shaft bearing in proper placement.

I "blueprint" the HRB kits to be plug & play, i.e. there is no requirement to perform all the measurements & calculate the required shims needed for the HRB. The HRB you have may not be simply plug & play.

LGAFF · 01-13-2020

Thanks Jerry always a class act, appreciate the info....

01-12-2020	#1
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Hydraulic Clutch So I picked up a RAM Hydraulic clutch for a 93-95 ZR1, of course I have 90, 91, 92.... am hoping to put it in the 90. I assume all I need is a larger diameter guide tube to make this work. I have a 96 trans in my basement... so assuming this is a simple swap. Got the setup for $250 so rolled the dice figured nothing to lose Modified Bell housing came with.... Thoughts? __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

01-12-2020	#2
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: Hydraulic Clutch By hydraulic clutch referring to throw out bearing obviously Sent from my iPhone using ZR-1 Net Registry __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

01-13-2020	#3
A26B Join Date: Dec 2003 Location: Arcadia, OK Posts: 3,392	Re: Hydraulic Clutch Measure the id of the RAM HRB (Hydraulic Release Bearing). Small id for late style transmission is about 1.315" & early style is about 1.375". Large i.d., early style actually runs into 1993 model year with no specific VIN cut off, so you may want to measure before you start swapping guide tubes. If the RAM Clutch you obtained is for the 93~95, the included HRB would likely be for the small dia guide tube, so you will likely need the smaller tube for your 90, not a larger tube. You might check into the procedure for shimming guide tubes when swapping around. The tube also hold the input shaft bearing in proper placement. I "blueprint" the HRB kits to be plug & play, i.e. there is no requirement to perform all the measurements & calculate the required shims needed for the HRB. The HRB you have may not be simply plug & play. __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1*, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed.

01-13-2020	#4
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: Hydraulic Clutch Thanks Jerry always a class act, appreciate the info.... __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359