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35is clutch drag.

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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john-e89
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35is clutch drag.

Post by john-e89 » Thu May 04, 2017 1:31 pm

Bonjourno,

As we have normal clutches I'm wondering if there is any drag when we're sitting at lights etc, with the foot brake engaged. When I release the foot brake I can't detect any mechanical take up with the car starting to roll very smoothly, so I'm assuming there must be a degree of drag, however light it may be. I'm also assuming this drag, should there be any, will have been factored in with a certain tolerance to keep it light therefore keeping your foot on the brake rather than knocking it out of drive is perfectly ok and won't cause any discernible wear on the clutches any more than normal use. Or is it better to knock it out of drive at the lights and then re-engage? I've been tending to knock it out of drive as I'm very mechanically sympathetic but am I being over cautious?

Any thoughts appreciated. :thumbsup:
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
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R.E92
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35is clutch drag.

Post by R.E92 » Thu May 04, 2017 2:09 pm

The DCT keeps the clutch packs disengaged at a standstill. It's only once you take the foot off the brake that it starts to engage.

lordgrover
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35is clutch drag.

Post by lordgrover » Thu May 04, 2017 3:30 pm

Good to know. Image

john-e89
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35is clutch drag.

Post by john-e89 » Thu May 04, 2017 8:33 pm

R.E92 wrote: Thu May 04, 2017 2:09 pm The DCT keeps the clutch packs disengaged at a standstill. It's only once you take the foot off the brake that it starts to engage.
Thanks for that. It's a damn smooth engage then as I can't feel it, seems seamless to me. :D
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

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35is clutch drag.

Post by R.E92 » Fri May 05, 2017 9:29 am

If you stomp on the accelerator pedal then you will feel it bite. Normally if ease away from a stop it's imperceptible.

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ronk
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35is clutch drag.

Post by ronk » Sun May 07, 2017 5:40 pm

Have you tried launch control yet?
A pal demonstrated it in his 330 xd (Company Car) and its a real shocker - it's without any mechanical sympathy to the system but a good party piece!
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

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jamesbond
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35is clutch drag.

Post by jamesbond » Sun May 07, 2017 5:42 pm

Have you tried it yet Ronk ?? :)
Born in Yorkshire ended up in Essex .. 35is Mel red now sold
Own 2 big cats (F type & XE S supercharged) looking for a z4 Hobby Car

z4 3.0i 03 - Z4 3.0i 04 - Z4 3.0i 05 - Z4 3.0i 03 - Z3M (s54) 03 Man - Z4M 06 - Z4M 06 - Z4M 07 -
Z4 35is 2014

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ronk
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35is clutch drag.

Post by ronk » Sun May 07, 2017 6:26 pm

jamesbond wrote: Sun May 07, 2017 5:42 pm Have you tried it yet Ronk ?? :)
No !
It's a brutal load on components in my opinion and although it's been designed to cope with the load it does warn to allow 15mins of cooling time.
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

john-e89
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35is clutch drag.

Post by john-e89 » Sun May 07, 2017 7:04 pm

It won't allow launch until it sees a pre-determined operating temperature. Personally I've no particular need to try it, you can launch hard enough without it should you have the inclination. Having said that I suppose having a 35is it would be a giggle to try it once just so you could experience it.

I always remember being at Ford Fair at Silverstone one year watching the 0-60 boys, a guy rolled up in a brand spanking new Mondeo ST220, he revved it to the limiter, dropped the clutch and the drive shaft snapping bang was met with raucuos totally unsympathetic applaud and jeering. An uncommon failureI'm sure but 0-60 etc, has never interested me so having said the above I probably won't try it.... :lol:
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

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ronk
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35is clutch drag.

Post by ronk » Sun May 07, 2017 7:36 pm

When it was demonstrated to me it was on the point if being scarey - one almighty single push and there seemed no way of being able to move forward out of the seat even if I'd wanted to!

A real party piece!
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

john-e89
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35is clutch drag.

Post by john-e89 » Sun May 07, 2017 10:21 pm

Have you seen Mr Plato testing the blue M roady in Switzerland just before it's launch? He bets his producer £5 he can't lean forward to pluck said fiver out of the dash under acceleration, Plato wins. The 35is, as you know, has at least, if not even harder, acceleration... :lol:
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

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ronk
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35is clutch drag.

Post by ronk » Sun May 07, 2017 10:48 pm

john-e89 wrote: Sun May 07, 2017 10:21 pm Have you seen Mr Plato testing the blue M roady in Switzerland just before it's launch? He bets his producer £5 he can't lean forward to pluck said fiver out of the dash under acceleration, Plato wins. The 35is, as you know, has at least, if not even harder, acceleration... :lol:
I think that was the stunt Mr Shelby used to do in his Cobras 🐍 .
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

john-e89
Lifer
Lifer
Posts: 11051
Joined: Tue Feb 10, 2015 10:27 pm

35is clutch drag.

Post by john-e89 » Sun May 07, 2017 10:50 pm

ronk wrote: Sun May 07, 2017 10:48 pm
john-e89 wrote: Sun May 07, 2017 10:21 pm Have you seen Mr Plato testing the blue M roady in Switzerland just before it's launch? He bets his producer £5 he can't lean forward to pluck said fiver out of the dash under acceleration, Plato wins. The 35is, as you know, has at least, if not even harder, acceleration... :lol:
I think that was the stunt Mr Shelby used to do in his Cobras 🐍 .
Yes he mentioned that in the clip.. :D
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

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ronk
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Location: Durham

35is clutch drag.

Post by ronk » Sun May 07, 2017 11:22 pm

john-e89 wrote: Sun May 07, 2017 10:50 pm
ronk wrote: Sun May 07, 2017 10:48 pm
john-e89 wrote: Sun May 07, 2017 10:21 pm Have you seen Mr Plato testing the blue M roady in Switzerland just before it's launch? He bets his producer £5 he can't lean forward to pluck said fiver out of the dash under acceleration, Plato wins. The 35is, as you know, has at least, if not even harder, acceleration... :lol:
I think that was the stunt Mr Shelby used to do in his Cobras 🐍 .
Yes he mentioned that in the clip.. :D
Now you mention it :rofl:
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

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