#ZedShed Z4 Coupe Journal

Lee

Zorg Guru (V)
British Zeds
M Power
#ZedShed
Joined
Mar 26, 2014
Points
193
Location
Basingstoke
Model of Z
Z4 Coupe 3.0si
The stock exhaust outlet and cat must sap a fair bit of HP and torque judging by how it looks - quite a fat pipe but a chuncky cat after that!

those branches you got a re are for LHD suppose?
They're RHD and do fit, just the steering clashes. They're from the 3 series.
 

Lee

Zorg Guru (V)
British Zeds
M Power
#ZedShed
Joined
Mar 26, 2014
Points
193
Location
Basingstoke
Model of Z
Z4 Coupe 3.0si
Little coupe update. As I do alot of track days along with spirited driving I thought I would try out an RTD shifter.

Get the old girl in the air
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you’ll need to remove the exhaust and propshaft. Remove the old two part linkage. Cut back a bit of the carpet.
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get the shift central so the 3/4th throw is bang on central. You’ll need to drill 3 holes to bolt it to the tunnel.
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I tried to refit the sound deadening but it would fit. So now I can hear the transmission slightly and get a bit of heat up the shifter.

Below shot showing the shifter bolted in using just one Linkage arm.
IMG_9425.jpeg

Now the shift throw is very short and being higher much easier to shift gear quickly.
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then a track day to make sure everything works well :D
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she’s such a capable car on track now, this setup proves you don’t need all the horse power to have fun and be really competitive on track.
 

Nodzed

Zorg Expert (II)
Supporter
British Zeds
M Power
Joined
Feb 18, 2016
Points
231
Location
Forest of Dean, Gloucestershire, England
Model of Z
Z3M Imola and Z4 (e89)
Nice👍
 
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Rha

Zorg Guru (V)
Supporter
British Zeds
Joined
Oct 26, 2014
Points
181
Location
Hemel Hempstead, Hertfordshire, England.
Model of Z
Z4 coupe sport.
Love the look of that shifter, in fact love the look of the Beast on track. Still not giving up on getting another.
Had a garage clean out recently and need to get a good home for some very usefull mainly Z3 spares. Will contact you on w/app if your interested ( no cost to the Z shed ).
 
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Lee

Zorg Guru (V)
British Zeds
M Power
#ZedShed
Joined
Mar 26, 2014
Points
193
Location
Basingstoke
Model of Z
Z4 Coupe 3.0si
So the car has undergone another transformation. There’s now development work being done on the N52 engines and they’re all pushing above 300bhp Naturally aspirated. Me being me jumped all over this so the coupes gone through the first stages of development. She’s currently just shy of 280bhp with the next stage still to come. I also even got to stretch her legs at the Ring a few weeks ago.

first round of development by BDS is tweaking the valvetronic and fitting their custom intake.
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few Ring photos. This is the clio we just finished building at the shed. Safe to say she’s a right weapon.
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resting after some laps with a friends Z4M.
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Standard Ring photo.
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and some shots on track.
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cool photo with the whole squad in tow. Also me completing the wipperman challenge cutting the curb
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Dino D

Zorg Guru (V)
British Zeds
Joined
Mar 28, 2014
Points
176
Location
Kent
Model of Z
2.8 Manual
Nice to see an update on this beast😎
I was getting worried when I only see pics of Gaz’s Audi on track…
300bhp out of 3l na is good going.
 

Lee

Zorg Guru (V)
British Zeds
M Power
#ZedShed
Joined
Mar 26, 2014
Points
193
Location
Basingstoke
Model of Z
Z4 Coupe 3.0si
So a big update. After the new mapping went on she’s making between 280-290 bhp, but she also developed a start stop feature which is rather annoying. The revs dropped so quick the valvetronic couldn’t catch it and it would cut out, we spent a day trying to figure out what it could be. After spending a day out testing with the laptop we started noticing strange valvetronic readings and after a peak inside we could see the cam was goosed.

The master Bruno at BDS working his magic
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Later when I got back to the unit I took a look at the cam
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So the reason why this matters is the N52 uses the cam/valvetronic motor to control the valve lift at idle if the gear is over worn like above it has too much play. So today I collected the last cam BMW had in country with new needle bearings and shells. Thought I would give it a go fitting myself.

New valvetronic cam
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luckily this cam is not a part of the timing so can be removed very carefully.

Old cam out
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New cam in
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When you compare the state of the teeth you can see the issue
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Now I just need to get the mapping redone :D
 

Dino D

Zorg Guru (V)
British Zeds
Joined
Mar 28, 2014
Points
176
Location
Kent
Model of Z
2.8 Manual
What would be the cause of that sort of wear do you think?
Always thought of cam loves wearing, but never gave a thought to the gears that turn them!
 

Lee

Zorg Guru (V)
British Zeds
M Power
#ZedShed
Joined
Mar 26, 2014
Points
193
Location
Basingstoke
Model of Z
Z4 Coupe 3.0si
What would be the cause of that sort of wear do you think?
Always thought of cam loves wearing, but never gave a thought to the gears that turn them!
Age I would think mate. Not many coupe have reached this milage and I guess it depends how they’ve been used. This cam is constantly adjusting so fine tunes the idle etc.
 
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