Silvertop Install, Clutch Flywheel problems, please help!!
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08-03-2008, 08:09 PM
Post: #1
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Silvertop Install, Clutch Flywheel problems, please help!!
I installed a Silvetop in my MG midget, previously running a large port 4AGE. I installed the original gearbox and fitted a new clutch kit. The problem is, when you press the clutch pedal and select a gear, then rev the car hard (4-500rpm), the car jumps forward as if the clutch has been released. I have taken the clutch apart and nothing obvious seems to be wrong. I am now concerned that there is movement in the flywheel. If I get a large screwdriver and place it between the block and the flywheel I get slight movement, is this normal?
Thanks Ivan 1972 MG Midget - AE86 Engine, Ford Anglia Axle - Escort LSD - Live the Dream!!1 |
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08-03-2008, 09:07 PM
Post: #2
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Silvertop Install, Clutch Flywheel problems, please help!!
did you swap the flywheel ?
bigport flywheel is 200 mm and the 20v silvertop is 212 so you would be missing some grabbing of the clutch Cars: "99 Lexus IS200 "86 AE86 Kouki Panda Levin GT-Apex (restore project) "84 AE86 Zenki Blue Levin (project racer) Motorcycles: "02 Yamaha R1 "02 Honda Hornet S "08 BMW R1200GS |
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08-03-2008, 10:16 PM
Post: #3
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Silvertop Install, Clutch Flywheel problems, please help!!
If I remember correctly, there are thrust washers on the crankshaft
to control the forward and back movement. Without reference to the manual, I can't say the standard clearance. However, it will be quite small, probably no more than 0.5mm. When you say the clutch grabs... does it just give a tiny movement, or does the car actually jump forward by some distance ?? The release bearing that comes with a FWD clutch kit is completely wrong for a T50 setup. Did you change the release bearing ?? Did you install a spigot bearing in the ST flywheel ?? Cheers... jondee86 |
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08-03-2008, 11:35 PM
Post: #4
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Silvertop Install, Clutch Flywheel problems, please help!!
The car would move forward, but it's not like letting the clutch up, if you know what I mean, it wouldn't run you over just sort of bump into you. I took the flywhhel from my 16valve engine, I bought a clutch kit for a RWD corolla. I did fit the spigot bearing (eventually, I forgot if the first time, and was convinced this was the problem). The clucth kit I got wasn't toyota, I noticed differences in the pressure plate springs etc, but overall size was similar, the thrust bearing looked the same.
Thanks Ivan 1972 MG Midget - AE86 Engine, Ford Anglia Axle - Escort LSD - Live the Dream!!1 |
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08-04-2008, 02:37 AM
Post: #5
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Silvertop Install, Clutch Flywheel problems, please help!!
Should be fine then... no different from fitting a clutch kit to
your previous setup. For the car to move forward the clutch must be getting some sort of contact. Maybe the high rotational speed when disengaged, causes some small movement of the pressure plate ? Enough to just kiss the clutch plate ?? Does your clutch take up with the pedal close to the floor, or not until the pedal is almost at the top of its stroke ?? If it takes up as soon as the pedal leaves the floor, you most likely have a problem with your slave cylinder. Cheers... jondee86 |
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08-04-2008, 12:03 PM
Post: #6
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Silvertop Install, Clutch Flywheel problems, please help!!
I found some small differences between the clutch kits, I have built it back up with the original clutch, going to fit tonight. I will let you know how I get on.
Thanks for the info. Ivan 1972 MG Midget - AE86 Engine, Ford Anglia Axle - Escort LSD - Live the Dream!!1 |
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