Clutch Plate Fitment Issue - Dimensions Please

[hoodygoodwood 70 3 Cars]

I have a GTI6 flywheel on my 8V engine ( running Omex so need the pickups ) my brand new clutch kit has a problem , the plate when fitted by hand to the flywheel has a clearance issue , the springs are touching lightly on the 8 crank bolts .

Could someone with an mi or GTI6 flywheel and a mi driven plate take some dimensions for me please .

1. How thick are the heads on the 8 hex headed bolts that hold the fly to the crank .mine are 5.5mm approx.

2. Could you measure from a straightedge on the flywheel friction surface down to the top of those bolt heads , mine is 3mm approx. .

3. On a 215mm mi clutch plate put a straightedge across the high point of the springs and measure to the friction surface , mine is 3mm approx. .

These sizes are by ruler but show there is no clearance . Just trying to find out which component is wrong so I can replace it .

Many thanks .

[Anthony 1,000]

If you haven't had any luck in the meantime then I should be able to check these tonight for you as I've got a couple of flywheels and clutches in the garage.

 

I have heard of this issue before and if you do a search through Google you'll possibly find some threads about it. I can't recall what the cause or solution was, but my best guess would be dubious tolerances on the clutch plate.

[Andy 105 1 Cars]

Hi. I have a 215mm Mi16 friction plate. The vertical distance between the high point on the spring side and the friction surface is 11.5mm . This side definitely faces towards the clutch cover and not the flywheel. Bit difficult to measure the hex bolt heads as my engine is on a stand, but they look to be about 5mm deep. Oh just one more point . The 'other' side of the friction plate is almost completely flat with esssentially no protrusion , which is why that is the face that faces the flywheel.

Hope this gets you a step closer to dealing with your conundrum.

Andy

[hoodygoodwood 70 3 Cars]

Thanks for that information .

A mate has just had a measure up for me , most of his mi crank bolts have a 5.8 mm thick head while one set come in at 4.8 mm . His mi flywheel measures 5.2 mm from friction surface down to the top of the bolts so straight away he has 2mm clearance which I do not . His clutch plate is the same as mine with about 3 mm from top of springs down to friction surface . Andy , your clutch plate with the springs level with the face sounds ideal , if only mine was like that . My mate has a spare mi flywheel so I am going to drive over and pick it up so I can get the engine and box fitted on Thursday .

[hoodygoodwood 70 3 Cars]

Got the 2 Mi flywheels and clutches from my mate , compared everything with my own set up and found the flywheels were identical , the clutch covers had differences in the lengths of the 'fingers' but were dimensionally identical . The problem I had was just because the springs on the new plate were too proud on the flywheel side , bolted it all together with one of the other plates and the engine and box are now in the 309 .