OS Giken Twin Plate - shortening gearbox snout ???

R

radiobar

New Member
OS Giken Twin Plate prob-need to shorten the gearbox snout ??? - update with pics

hi !

when fitting an os giken twin plate clutch - is it necassary
to shorten the gearbox snout ?

or is there enough space for disc movement ?

have to remove the box,because of a clutch problem.
and it might be the cover plate or the snout

i installed all new parts,except the cover plate
and after around 300 miles clutch is not working
properly.


thanks for any info.

bye.
 
Last edited:
campbellju

campbellju

Moderators
Staff member
I'm not sure if I'm being ignorant or something has been lost in the translation but what is a gearbox snout.

I've had a lot of experience with my superclucth twin plate that might be relevant but I aslo don't understand what your problem is from your post.

cheers,
Jim
 
O

Odin

Guest
Campbell said:
I'm not sure if I'm being ignorant or something has been lost in the translation but what is a gearbox snout.
Click to expand...

I'm sure he's meaning the main shaft :shock: :shock: , I have visions of him with an angle grinder cutting the end off to shorten it :shock: :shock: :lol: :lol: :lol: .



Rob
 
zia

zia

Active Member
i think he mean's the sleeve that the release bearing sit's on,on the skyline's this has to be shortened to fit the multiplate clutch's.

zia
 
R

radiobar

New Member
hi !

the snout is the part where the shaft comes out from the gearbox.

its not the shaft.

the bearing is moving on it.

and since you have 2 discs and not 1 it might
be possible that its blocking.

gearbox will be removed today and we will see

bye.
 
Last edited:
campbellju

campbellju

Moderators
Staff member
With all my many twin plate clutch woes, I've never heard problems with the "snout" fouling the release bearing.

Keep us informed anyway
 
R

radiobar

New Member
hi !

engine is removed and the snout is not the problem.
there is enough space for disc moving.

here some pics of the pressure and cover plate.
as you can see there are some marks from
the pressure plate at the underside of the cover.

so it semms that the pressure plate has not
enough room to move.

but why ?
any ideas ?

maybe we need to install a nut in the slave
cylinder. but i think this is ok as it moves
out 2 cm or maybe more.


symptoms are:

- with pressed clutch you can still accelerate !
- if full throttle then clutch slips
- no gear comes out at any rpm - only with some force
- you can change in&out any gear at idle - but not always
- sometimes its total blocked,you can press and release
as many times as you want at idle
- slave cylinder is ok,system is bleeded etc.


all parts are new and worked ok for around 300 miles.

the flywheel is used - but machined before install.
the cover plate(the one wirh the springs) is used

pics:
http://www.weidewaren.de/g1.jpg
http://www.weidewaren.de/g1.jpg
http://www.weidewaren.de/g2.jpg
http://www.weidewaren.de/g3.jpg
http://www.weidewaren.de/g4.jpg
http://www.weidewaren.de/g5.jpg
http://www.weidewaren.de/g6.jpg
http://www.weidewaren.de/g7.jpg
http://www.weidewaren.de/g8.jpg
http://www.weidewaren.de/g9.jpg
http://www.weidewaren.de/g99.jpg


thanks for help.
bye
 
Last edited:
R

radiobar

New Member
hi !

still no idea ?

maybe we have the wrong cover plate ?

are there different cover plates ?

i know that there are different clutch types.

bye.
 
campbellju

campbellju

Moderators
Staff member
- with pressed clutch you can still accelerate !
- if full throttle then clutch slips

These two conflict so I gues its not adjustment of the master cylinder.

Would the OS Giken also need a raduised bearing or does it use the standard one?

Are the friction plates too thick assuming they are new? Are the pressure plates the correct thickness as they can wear too?

Aside from that you need someone else with more specific OS Giken experience than me
 
R

radiobar

New Member
hi !

we use the os giken uprated bearing.

its very strange that is worked ok for around 300 miles.

as all parts except the cover plate are new, we will order
a new one tomorrow.

but its still interesting - how can the pressure plate touch the cover plate(see pics)

we have machined the pressure plate a little - 0.7 mm

but nothing changed - so engine out for the third time
and we have a lot of fun........

bye.
 
zia

zia

Active Member
those mark's on pressure plate don't look right.was it ligned up with each lug?was the sandwich plate inline (not staggered)? if you machine the p/p then this increase's the distance between p/p and first plate which will cuase disengagement problem's

zia
 
R

radiobar

New Member
hi !

yes,its was each lug. the spacer plate is new and inline. we have machined it only
where it was touching. space between p/p and frist disc was not increased.

bye.
 
R

radiobar

New Member
hi !

car is working - its was the cover plate.

engine in/out 2 times in the last 6 days = lot of fun...

thanks for help.

bye.
 
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