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Discussion Starter #1
Mine suffers tri-yearly problem of developing a soft pedal at the top. So how do you bleed it through ??

Also I hear that the long term solution is to use a synthetic motorcycle clutch fluid. Know which one ???
 

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Two ways you can do it. Depending on who and when your F40 was built there should be a nipple above the clutch housing or one that is accessible by removing the bottom floor pan in the rear. I have also watched a mechanic do it directly via the reservoir in the front.

Apparently "soft pedalitis" is casued by a problem with the magnesium bellhousing that contains the clutch slave cylinder. The alloy used produces gas bubbles that are trapped in the slave cylinder. To fix it you have to remove and coat the housing.
 

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Discussion Starter #3
F40 Clutch Bleeding

Thank you for the imput. It is what the specialist garage said with the porous housing. They said that the unofficial solution is to use a synthetic motorcycle fluid ( Kawazaki ? ) but I thought that all the DOT 4 fluids were synthetic anyway.

Mine is 1988 UK version with wind-up windows and non-adjustable suspension lift. It also has carpeting to absorb the noise, full Alpine stereo system with head unit mounted down by the side of the seat, multi-changer in the passenger footwell against the central tunnel and 4 speakers.......

Seats re-upholstered by the Corbeau factory with black ( protected ) sides.

My other problem area is the corrosion that manages to get under the plastic coating of the wheels. I am carrying a spare of each & get a poor example re-furbished every time that I need new tyres.
 

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Thank you for the imput. It is what the specialist garage said with the porous housing. They said that the unofficial solution is to use a synthetic motorcycle fluid ( Kawazaki ? ) but I thought that all the DOT 4 fluids were synthetic anyway.

Mine is 1988 UK version with wind-up windows and non-adjustable suspension lift. It also has carpeting to absorb the noise, full Alpine stereo system with head unit mounted down by the side of the seat, multi-changer in the passenger footwell against the central tunnel and 4 speakers.......

Seats re-upholstered by the Corbeau factory with black ( protected ) sides.

My other problem area is the corrosion that manages to get under the plastic coating of the wheels. I am carrying a spare of each & get a poor example re-furbished every time that I need new tyres.
Mine is a more pedestrian F40. 1992 Euro version with adjustable suspension, uprated turbos, and a custom sports exhaust. It sports a couple of floor mats to catch grit and pebbles along with a lighter plug under the dash for the Sat Nav. Otherwise ir is

I had not heard about the motorcycle fluid. Will have to check that out.
 
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