John B
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Joined:
Dec 2015
New Jersey
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So I've noticed that my 88 has difficulty shifting into 1st gear after driving around for longer periods of time. It seems to get worse the longer the car has been running. The transmission was rebuilt two years ago and the slave cylinder is only a year old. I'm unaware of whether or not the clutch master cylinder has ever been replaced. Do you guys think these symptoms could be from a worn clutch master cylinder? If so, any recommendations on which brand to replace it with? Thanks!
88 Turbo Coupe: Front mount intercooler, MGW short throw shifter, full coilover conversion, tubular control arms front and rear, svo front brakes, vacuum assist brake swap, manual steering swap, GT35R turbo with external gate, pimpx ecu, 60lb injectors, 3 core aluminum radiator, Boport 1.5 cam, gutted upper, corbeau fixed back seats, and the list goes on.
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Pete D
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Joined:
Apr 2001
Northern OH
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I never had a master cylinder issue but Is the clutch hydraulic system losing any fluid?
Pete Dunham
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Jeff K
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Joined:
Apr 2001
Milwaukee, WI
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Check the distance the slave cyl moves when the clutch petal is fully depressed. Slave should move .53 inches minimum. If it does, the hydraulic system is working correctly.
Jeff Korn
88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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John B
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Joined:
Dec 2015
New Jersey
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Pete D Wrote:I never had a master cylinder issue but Is the clutch hydraulic system losing any fluid?
No it hasn't; that was the first thing I checked and the level has remained the same. Although, the fluid was also the same level when my slave cylinder went. The internal components pretty much self destructed and the system lost all pressure.
88 Turbo Coupe: Front mount intercooler, MGW short throw shifter, full coilover conversion, tubular control arms front and rear, svo front brakes, vacuum assist brake swap, manual steering swap, GT35R turbo with external gate, pimpx ecu, 60lb injectors, 3 core aluminum radiator, Boport 1.5 cam, gutted upper, corbeau fixed back seats, and the list goes on.
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John B
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Joined:
Dec 2015
New Jersey
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Jeff K Wrote:Check the distance the slave cyl moves when the clutch petal is fully depressed. Slave should move .53 inches minimum. If it does, the hydraulic system is working correctly.
I do have to check this; I'll take a look at it this weekend. If it moves less than .53 inches, would you say master cylinder since the slave is new or what else could I possibly check? Checking in mind that the system isn't losing fluid.
88 Turbo Coupe: Front mount intercooler, MGW short throw shifter, full coilover conversion, tubular control arms front and rear, svo front brakes, vacuum assist brake swap, manual steering swap, GT35R turbo with external gate, pimpx ecu, 60lb injectors, 3 core aluminum radiator, Boport 1.5 cam, gutted upper, corbeau fixed back seats, and the list goes on.
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John B
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Joined:
Dec 2015
New Jersey
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I'm also thinking that it may be my clutch. When the transmission was rebuilt two years, we looked at the clutch and thought there was roughly 50% life on it. I've only owned the car for three years now so I don't know the history of the current clutch. I'm going to be installing a Spec Stage 3+ in the coming months so if the hydraulic system checks out then maybe this is the issue.
88 Turbo Coupe: Front mount intercooler, MGW short throw shifter, full coilover conversion, tubular control arms front and rear, svo front brakes, vacuum assist brake swap, manual steering swap, GT35R turbo with external gate, pimpx ecu, 60lb injectors, 3 core aluminum radiator, Boport 1.5 cam, gutted upper, corbeau fixed back seats, and the list goes on.
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