A ridiculously cheap clutch mod that has transformed my E85 driving experience!

yipikayee · Post by **yipikayee** » Mon Jul 05, 2021 9:04 pm

Its something that was bothering me since i got the car.. so happy i saw this thread. i have put an order in, thank you sir

Conrod · Post by **Conrod** » Tue Jul 06, 2021 8:34 am

Whether you take the DIY or off-the-shelf approach, it's a very cheap mod and I'm pretty sure many people will feel the difference. Prior to making this mod I was unaware of previous threads on this subject and that aftermarket stops even existed!

Regarding Liam's comment about the biting point moving with temperature, I too have seen comments from various sources about this. I can't quite figure out what might cause this, but I guess it could be worn linkages, leaking slave/master cylinder seals, old brake fluid or air in the system. Anyway, following Liam's advice I took mine out for a spirited drive yesterday, just to check!

Another benefit of removing the clutch pedal dead space is that I have been able to move the seat further back. As I mentioned previously, I'm also in the process of fitting seat runner spacers to improve thigh and lumbar support. The spacers themselves are now fitted, but having the front of the runners raised 30mm off the floor looks odd. I'm currently finalising the design of some 3D-printed blocks to fit around the spacers to fill the gap and improve the appearance. When I've finished I'll post details of the components used (safety being a prime design aim) and the STL files for the blocks.

Liam22 · Post by **Liam22** » Tue Jul 06, 2021 10:33 am

Conrod wrote: ↑Tue Jul 06, 2021 8:34 am Regarding Liam's comment about the biting point moving with temperature, I too have seen comments from various sources about this. I can't quite figure out what might cause this

I always put it down to thermal expansion, as you've got the entire clutch hydraulic system next to the engine/gearbox.

https://www.q8oils.com/general-industry ... the-risks/

Conrod · Post by **Conrod** » Tue Jul 06, 2021 10:48 am

Interesting article Liam.

The funny thing is that my previous toy was a Cobra replica with a 383ci (6.3l) Chevy V8, which produced bucketloads of heat under the bonnet. The clutch and brake master cylinders and the fluid reservoir were all sited near the RH bank of headers, but I never experienced any movement of the clutch biting point. Mind you, the hydraulic brake light switch was a consumable item, as it was sited immediately above the RH headers and only around 20 cms away!

Conrod · Post by **Conrod** » Tue Jul 06, 2021 10:50 am

Oh, and for good measure the clutch slave cylinder was sited in the hot airflow stream from the LH bank of heaters!

tomscott · Post by **tomscott** » Tue Jul 06, 2021 11:25 am

Half the problem with the Z clutch is its not adjustable and auto adjusts regardless of the wear point it should work as it did originally.

Mine is quite high so feel like my foots in my mouth, on my previous Z4M it was really low and was lovely to drive think the CDV is still installed too to the bite point on engagement is ok but the declutch its quite high and laggy so... bit annoying

Seems like its a problem loads of threads online.

JamesClements · Post by **JamesClements** » Tue Jul 06, 2021 11:36 am

Just ordered one will see what difference it makes

thespannerman · Post by **thespannerman** » Tue Jul 06, 2021 2:37 pm

I seem ok in finding the bite point on the clutch, and being tall like being able to get the clutch pedal right down to the floor (let’s me stretch my leg), but the 1st to 2nd change really needs smoothing out, so will have a go at removing the CDV.

Al

SGRG · Post by **SGRG** » Thu Jul 08, 2021 10:52 pm

Ordered Robbs clutch stop and dare i say this is probably the most noticeable improvement. I did the CDV delete in early June but I saw no big difference/improvement. Shift from 1st to 2nd required a-lot of concentration before and after. On occasion i was still "kangarooing" like a newbe. Item arrived today, installed it and went for a drive. It genuinely feels like it has resolved shifting issues for me. Early days but damn should have done this before spending money on CDV delete which again dare I say is likely having placebo effect on most of us rather than actually fixing the issue most of us are experiencing.

jamiecarpenter · Post by **jamiecarpenter** » Fri Jul 09, 2021 12:51 pm

Ive just fitted my clutch stop, after ordering it off the Ebay link. Unfortunately the thread is not the correct size to screw in. So unsure on how the M one is different, its quite possibly the same. To rectify this I used some plumbers tape and wrapped it around the thread. It now fits fine. Havent been out for a drive with it installed yet, so cant tell you how it performs.

tomscott · Post by **tomscott** » Fri Jul 09, 2021 2:11 pm

Mine arrived this morning so will get it fitted tomorrow and feedback

Rocket · Post by **Rocket** » Fri Jul 09, 2021 3:54 pm

jamiecarpenter wrote: ↑Fri Jul 09, 2021 12:51 pm Ive just fitted my clutch stop, after ordering it off the Ebay link. Unfortunately the thread is not the correct size to screw in. So unsure on how the M one is different, its quite possibly the same. To rectify this I used some plumbers tape and wrapped it around the thread. It now fits fine. Havent been out for a drive with it installed yet, so cant tell you how it performs.

Mine is the same. It should have an M10 thread but the new part is only 9mm dia and I am not sure it is a thread or a ribbed push fit type of thing. I think I will get a coach bolt and adjust it just how I like it.

SGRG · Post by **SGRG** » Fri Jul 09, 2021 4:01 pm

jamiecarpenter wrote: ↑Fri Jul 09, 2021 12:51 pm Ive just fitted my clutch stop, after ordering it off the Ebay link. Unfortunately the thread is not the correct size to screw in. So unsure on how the M one is different, its quite possibly the same. To rectify this I used some plumbers tape and wrapped it around the thread. It now fits fine. Havent been out for a drive with it installed yet, so cant tell you how it performs.

Jamie, Robb sales M specific and non m specific clutch stop it seems. I bought this one, where the thread end is flat.
https://www.ebay.co.uk/itm/254978733765

Where as this one based on picture I can see on eBay the thread has a pointy end. So they must be different.
https://www.ebay.co.uk/itm/254974452955

Message him, he is quite responsive.

EDIT: just realised that he is using generic picture on all products. Best bet is to message him.

inkey$ · Post by **inkey$** » Fri Jul 09, 2021 5:18 pm

Mine also turned up today, so will try and find some time this weekend to fit and try out.

sw4nny · Post by **sw4nny** » Fri Jul 09, 2021 6:44 pm

Mine came yesterday from robsclutchstops.
The thread is too small and does not tighten in the hole.
I will message him at the weekend.

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