Clutch systems / heavy pedal
Clutch systems / heavy pedal
Author
Discussion

Dr Peter

Original Poster:

670 posts

247 months

Friday 30th June 2006
quotequote all
I have been hearing that the factory clutch system can get a little hard on the old legs after a while driving, and in traffic.
Those of you lucky ones that have finished your cars, can you give me some feedback on this.

I have suggested that a way round this will be to fit a super clutch, 2 organic plates with a 7.25 alloy fly wheel, it is not a cheep option by any means and I am only ever going to run up to 500BHP max, is it a good idea?

I’m going to be running an LSx engine with G50 gearbox, does anyone know if the factory clutch system will work?

Pete

stig

11,823 posts

313 months

Friday 30th June 2006
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Far cheaper to build up your leg muscles

splatspeed

7,491 posts

280 months

Friday 30th June 2006
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no this is quite a serious issue with leg damage

wife has a bone graft on her left knee

does this mean she cant drive my car?????

oh i hope it does

Sean

Rubi

51 posts

250 months

Friday 30th June 2006
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When I first built the car the clutch felt really heavy, but you quickly get used to it.

If after it is built you find the clutch is too heavy you might consider retro fitting servo assistance to it; it will probably be cheaper than multiplate clutches anyway. I have used this system with success on a Morgan driven by someone with bad arthritis.

stig

11,823 posts

313 months

Friday 30th June 2006
quotequote all
splatspeed said:
no this is quite a serious issue with leg damage

wife has a bone graft on her left knee

does this mean she cant drive my car?????

oh i hope it does

Sean


No Sean, I'd say the fact that it's an Ultima precludes her from driving anyway



On a more serious note, it also depends on how tall she is. It can be a bit of a stretch to the pedals if you're vertically challenged and the seats only go forward so far.

To be honest, unless you're married to Fatima Whitbread, the pedals will wear her out VERY quickly.

andygtt

8,345 posts

293 months

Friday 30th June 2006
quotequote all
I'm going the tripple plate route on my new car as having driven a few Ultima's one common theme was that the clutch was heavy, I could cope fine but the wife stood no chance.

It's not a cheap option but its much better IMO lighter and less movement.... speak to GD as they do a tripple plate kit for the G50 to SBC, which includes adapter starter etc etc.

gtr-gaz

5,281 posts

275 months

Friday 30th June 2006
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Don't double and triple plate clutches take a lot of getting used to?
You either stall it or leave tyre tracks. I have'nt used them so can't really comment. It's just what I've heard

GTWayne

4,595 posts

246 months

Friday 30th June 2006
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Double and triple (and for that matter quadrupel) clutches are partially designed to ease operation.You are thinking of single sintered or ceramic type clutches and if the centre is un-sprung it is even more like an on/off switch.

davefiddes

846 posts

289 months

Friday 30th June 2006
quotequote all
Try fitting a 5/8" girling master cylinder instead of the 3/4" that the factory supply. You leg moves a little further but it is a *LOT* easier to drive with. It's not slower IMHO. Lots of feel too...which I think you lose with a multiplate clutch.

Also have a good look over the mechanism I found that the clevis on the master cylinder fouled on the clutch pedal such that it bent the connecting rod. Spending a bit of time to be totally sure that the bits fit and are well greased is a good idea.

At £25 or so for the master cylinder and an afternoons work it's not too expensive if you decide you want to go back.

GTRMikie

874 posts

277 months

Friday 30th June 2006
quotequote all
davefiddes said:
Try fitting a 5/8" girling master cylinder instead of the 3/4" that the factory supply. You leg moves a little further but it is a *LOT* easier to drive with. It's not slower IMHO. Lots of feel too...which I think you lose with a multiplate clutch.

At £25 or so for the master cylinder and an afternoons work it's not too expensive if you decide you want to go back.


I've done this mod and it makes quite a difference.

Dr Peter

Original Poster:

670 posts

247 months

Saturday 1st July 2006
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“speak to GD as they do a tripple plate kit for the G50 to SBC, which includes adapter starter etc etc.”

I have the system is about £2k ouch.

Fitting a 5/8” master cylinder sounds like a great idea.
Good job I have not ordered them from AP yet

I'm going for an LS1 engine, will the standard factory g50 clutch system work for me?
If so what is the starter they use, I think it is a standard G50.
What about the fly wheel?
Kennedy engineering do an adaptor LSx to G50 I think this comes with a flywheel, infact I think they do a hole kit, I don't really understand there emails, has anyone got there bits from them?

Luckyp

6,243 posts

254 months

Saturday 1st July 2006
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Hold up!

Yes I was shocked after I got in and realised just how stiff the clutch was.......but after only a few hundred miles, I've forgotten what the fuss was about. You are young and fit ain't ya? Just think of it as yet another reminder that you not in an ordinary mota!!

Biggest thing I found to be important is to get seat to pedal distance and pedal angle right for you. You push with your back against the seat to depress the clutch, not just quads 'n calf.

LuckyP

jschwartz

836 posts

287 months

Saturday 1st July 2006
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What he said. "smaller master"
Jeff S
www.schwartzperformance.com

gtrclive

4,193 posts

312 months

Saturday 1st July 2006
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Might not be cheap but it is also alot lighter .... over 15 kgs lighter than a porsche clutch unit..