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Discussion Starter · #1 ·
I wish I could resist , but I can't ........ after 7 months of discussion , I have recently bought Sir Henry Cooper's former E28 M5 .

I had to take a cheeky little pic of some of my collection last night , Diamond Davina , Diamond Diana and Blue Belle :



Davina is absolutely flying with her new 4.5kg billet flywheel and the improvement in all round drivability is amazing . She pulls from 2,000 rpm and I even found myself selecting 4th before the top of the steep incline to my workshop this morning .

If anyone is close to CO10 9PB and wants to experience the difference over a stock 3.8 dual mass flywheel , feel free to pop over and we'll go for a drive .

Alternatively , you can wait until the April Goat Meet and see for yourself then .

These cars are just so good !
 

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Discussion Starter · #3 ·
Does it rattle in neutral now?

It was more of a release bearing noise that has disappeared now that everything has bedded in .

I'll get another vid , as she's driving really well ......... I'm very pleased with the results !

D
 

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very nice fleet you got! you got a racing clutch with the new flywheel? is it a must have, i mean a racing clutch?
 

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Discussion Starter · #6 ·
I have fitted a 4.5 billet flywheel that my engineers made to spec , based on a standard 5.7 kg 3.6 single mass flywheel .

This does not require a race clutch .







We also fabricated a lighter race flywheel that weighs 2.8 kg and requires a 184mm race clutch , twin plate cerametallic .



Our engineer's flywheels were fitted to the first 3 Fiesta WRC cars to finish in last weekend's Rally Sweden , so I think that they know what they are doing :

Live « Rally Sweden

D
 

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Discussion Starter · #8 ·
With the 4.5kg flywheel you need to go with a 3.6 clutch i.e. 240mm cover and sprung plate .

It drives so well , I wish I'd done it sooner !

I've fitted 3.6 smflywheels to numerous 3.8s , but this is better !

D
 

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Wow, interesting stuff! (the flywheel). What does it do for fuel economy and longevity? I presume that it must improve both if you restrain your right foot?

Are you going to start selling the revised flywheel? - how much? :) I presume this would have similar amazing effects on a 3.6 - just by reducing the weight by 1.3kg (22%)

Come on then David, more pictures of the new car - or are they in the E28 forum? (goes off to nosey..)

found them http://www.m5board.com/vbulletin/e2...t-sir-henry-coopers-former-uk-rhd-e28-m5.html
 

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Discussion Starter · #13 ·
Hi Jamie ,

These 4.5kg flywheels are reputed to improve fuel economy , although I have yet to carry out measured tests ...... my OBC currently shows 26.4mpg for combined driving .

I have 2 more from the original batch and these are £345 each , after which the price will increase to £375 .

I can also supply the necessary clutch kits if required .
 

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Hi Jamie ,

These 4.5kg flywheels are reputed to improve fuel economy , although I have yet to carry out measured tests ...... my OBC currently shows 26.4mpg for combined driving .

I have 2 more from the original batch and these are £345 each , after which the price will increase to £375 .

I can also supply the necessary clutch kits if required .
When can I pick up?
 

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Very envious of the E28's David. There is really nice one that I see from time to time at a local specialists when it comes in for service, he's promised me first refusal on it if he ever decides to sell. I hope I'm in a position to take him up on the offer when the time comes.

Then I will own all the models apart from the E60 Mwah ha ha!! :cool:
 

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Hi Jamie ,

These 4.5kg flywheels are reputed to improve fuel economy , although I have yet to carry out measured tests ...... my OBC currently shows 26.4mpg for combined driving .

I have 2 more from the original batch and these are £345 each , after which the price will increase to £375 .

I can also supply the necessary clutch kits if required .
If I still had my M I would of had one of these, as you know Dave I had a few issues with my car when it went to BMW. Was the next mod on the list for mine!

I did notice the difference in fitting the Supersprint exhaust, in terms of revving freer so this must make a very nice improvement!
 
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