Hyper
09-16-2003, 03:06 PM
I don't know if this has been covered before, but anyway...
Also forgive my English, me = Russian boy who just knows how to swear :D
My friend suggested a solution to common subaru problem with soft clutch, which he was having with his Forester. When the air temp goes up and you drive for a while especially in traffics, the clutch pedal goes down to floor and you can hardly put the car into 1st
So here's what he did
He noticed that the rod of the working cylinder somehow languidly moves on the hot engine.
I.e. probably working cylinder is heated up from the engine and either the cuffs extend somehow and move harder on the wall of the piston, or the liquid becomes more fluid and they and they let it through...though he changed 3 times Castrol Race with the boiling temp. of 380*.
Also the piston comes back in initial position only force of petals of the clutch cup.
The displacement of the cylinder being above the engine, on a way of hot air streams from fans, probably promotes it's heating as well.
On many cars with hydraulics cylinders are located in the bottom of a casing of a flywheel, and sofore and not so are subjects to heating.
Of course it's just a theory and from conversations with mechanics rather disputable from their point of view.
Moreover he noticed that on his friend's cars, devices located close to the engine, like pump of steering rack (Nissan Terrano) and main brake pump are covered with metal "screens"...so he got an idea of partly cut the heating of the cylinder.
From alluminium he fabricated a box (looks like matches box) without one narrow wall, size 90x70mm and height of sides of 40mm.
The narrow wall closes the cylinder from the side of fans, two sides - side of a hose and the prorolling thing (don't know how do say it, you'll understand once you look at it). The bottom is integral, with holes for cylinder mounting also does not reach the clutch fork (that's what we call it in Russian :p) by like 10mm
When he put it, the temp was like 26-28 which is rather hot, and he noticed that the soft area is gone and so far didn't appear.
Perhaps it's just him, or one case...he is not giving a 100% warranty that it will work, but worth a try, isn't it? :)
Here are pics of what it looks like
http://www.digitalpose.com/mbr/1/13806/p/483498_3172974169073924127_vl.jpg http://www.digitalpose.com/mbr/1/13806/p/483496_4419153014137078154_vl.jpg
Also forgive my English, me = Russian boy who just knows how to swear :D
My friend suggested a solution to common subaru problem with soft clutch, which he was having with his Forester. When the air temp goes up and you drive for a while especially in traffics, the clutch pedal goes down to floor and you can hardly put the car into 1st
So here's what he did
He noticed that the rod of the working cylinder somehow languidly moves on the hot engine.
I.e. probably working cylinder is heated up from the engine and either the cuffs extend somehow and move harder on the wall of the piston, or the liquid becomes more fluid and they and they let it through...though he changed 3 times Castrol Race with the boiling temp. of 380*.
Also the piston comes back in initial position only force of petals of the clutch cup.
The displacement of the cylinder being above the engine, on a way of hot air streams from fans, probably promotes it's heating as well.
On many cars with hydraulics cylinders are located in the bottom of a casing of a flywheel, and sofore and not so are subjects to heating.
Of course it's just a theory and from conversations with mechanics rather disputable from their point of view.
Moreover he noticed that on his friend's cars, devices located close to the engine, like pump of steering rack (Nissan Terrano) and main brake pump are covered with metal "screens"...so he got an idea of partly cut the heating of the cylinder.
From alluminium he fabricated a box (looks like matches box) without one narrow wall, size 90x70mm and height of sides of 40mm.
The narrow wall closes the cylinder from the side of fans, two sides - side of a hose and the prorolling thing (don't know how do say it, you'll understand once you look at it). The bottom is integral, with holes for cylinder mounting also does not reach the clutch fork (that's what we call it in Russian :p) by like 10mm
When he put it, the temp was like 26-28 which is rather hot, and he noticed that the soft area is gone and so far didn't appear.
Perhaps it's just him, or one case...he is not giving a 100% warranty that it will work, but worth a try, isn't it? :)
Here are pics of what it looks like
http://www.digitalpose.com/mbr/1/13806/p/483498_3172974169073924127_vl.jpg http://www.digitalpose.com/mbr/1/13806/p/483496_4419153014137078154_vl.jpg