Installed some VAC ultralight pulleys.
Chuffed about the results :)

http://www.cslregister.com/forum/showthread.php?t=13840

Any updates this year :)?

I need to put the data of the H&R anti roll bars and will be doing a service soon, will keep you updated.
I did some modifications on my M5 ;) .

Next year I may buy a 2nd set of wheels for the CSL.
Other upgrades ? Don't see something missing.

21.05.2017
 

No update in a very long time.

Not much changed other than that I am still driving and enjoying the CSL.
I installed Michelin Cup 2 tyres and recently I did the Inspection 2 service, including adjusting the valve clearance on my own.
I had only 5 valves needing slight adjustment.

Here's a photo from last weekend.

http://www.clubcsl.com/CSL/blog/CSL-201705.jpg

And today I did another leak down test and all cylinders checked out fine :thumbs:

http://www.clubcsl.com/CSL/blog/CSL-leakdown-test.jpg

I am in the process of installing my SPAL electric fan. It has been sitting for 2 years but the following video of engine masters (I have a Motortrend on demand subscription and watch various series) convinced me to get this 10HP of parasitic loss.
You can expect as always a comparison with data ;)

https://www.youtube.com/watch?v=ZXdLgaFXZzs&t=420s

Great post as always!

Thanks for sharing. :thumbs:

Any opinions on the Cup 2s yet :)?

June 11th Mike. Will tell you that day.

17.02.2018
 

It has been a while since I posted something.

I continue reducing the weight of the car without compromising the comfort and practicality it has.

This JMT lithium battery was on offer from 500 EUR to 250 EUR and I bought one !
I had to buy the battery posts separately. They are XS power (XS power 586 Tall Brass Post Adaptors M6).
The battery is very light - 2091 g
It works great and it will not discharge when the car is not being driven for 5 weeks.

http://www.clubcsl.com/CSL/blog/jmt-battery-weight.jpg


I then started making my own battery holder as this battery is very small compared to the OEM
Also, there were some weight savings as the OEM battery holder is very heavy.

1310 g
http://www.clubcsl.com/CSL/blog/OEM-battery-holder.jpg

I made the new holder from aluminium.

Only 237 g
http://www.clubcsl.com/CSL/blog/batt...der-weight.jpg

In the car - yes I put lighter nuts :whistle:

http://www.clubcsl.com/CSL/blog/batt...der-in-car.jpg

In the car with the lithium battery

http://www.clubcsl.com/CSL/blog/battery-in-car.jpg


Results:

OEM Battery + OEM holder = 15.6 kg + 1.3 kg = 16.9 kg
JMT Lithium Battery + Alexk holder = 2.1 kg + 0.2 kg = 2.3 kg
Weight savings = 14.6 kg

Not bad for 250 EUR :)

Thats a great mod.

Wow, that is a significant saving :) .

Does the Lithium battery need a special trickle charger :) ?

It's a special lithium battery charger Mike.

It is a very impressive weight saving, but I would have some concerns about how well the battery would be held in place in an impact.

MC

Fair comment, but the battery is only 2 kilos.
Worst case scenario is that the holder will bent, but that's the least of my concerns in a very severe crash.

I realized just now that I never posted the electric fan installation.
I have done a very good job with this one :thumbs:
I couldn't see with my telemetry a performance difference.

I will write something tonight.

Almost a year since the last post :whistle:

Here we go.

Some time ago I removed the front AC fan as I believe it is reducing the airflow to the radiators.

The fan I bought to replace the mechanical fan is a SPAL - VA18-AP71/LL-59A.
The item number is -> # 30102049 . 2070 CFM 16" Spal Curved Blade Puller Fan

The unit is 2440g which means it's 700g heavier than the mechanical fan which is 1710g.
But, it reduces the parasitic losses and you can get to remove the AC fan which is a very heavy unit.

http://www.clubcsl.com/CSL/blog/fan-01.jpg

http://www.clubcsl.com/CSL/blog/fan-02.jpg

http://www.clubcsl.com/CSL/blog/fan-03.jpg

http://www.clubcsl.com/CSL/blog/fan-04.jpg

Mounting it was as easy as drilling 4 holes in the radiator, using 4 brackets and bolting it.

The clearance to the engine is simply perfect - like if it was made for the CSL.
I also cut the OEM fan shroud and put it back on.
The installations looks very clean.

I am driving this fan using the control unit of the AC fan and it works perfect.

http://www.clubcsl.com/CSL/blog/fan-05.jpg

http://www.clubcsl.com/CSL/blog/fan-06.jpg

http://www.clubcsl.com/CSL/blog/fan-07.jpg

Does ac still work ok??

Neat looking job :thumbs:

Yes - no problems.

One more performance update.

I bought a set of titanium wheel bolts.
They were discounted and I could not resist.

The BBS wheel bolts are 388g while the titanium ones are 173g.
This is a 215g difference.

http://www.clubcsl.com/CSL/blog/wheel-bolts-bbs.jpg

http://www.clubcsl.com/CSL/blog/whee...s-titanium.jpg

Nice :thumbs:

Nice mods :).

I did the titanium stud and nut kit, as it makes swapping wheels over a little easier :).

conrod bearings
 

A long overdue post as I did this work back in April...
I was getting the car ready to do a trackday at the Ring, but then I decided to take the M5 instead as it was raining.

I had decided to replace the conrod bearings as proactive maintenance.
The car had 112800 km. Now it has 115k km and still runs strong.

I started by removing the front subframe.

http://www.clubcsl.com/CSL/blog/csl-suspension-01.jpg

I bought from Ebay the tool to hold the engine.

http://www.clubcsl.com/CSL/blog/csl-engine-04.jpg

But before we continue, check these original BMW workshop tools my brother got me :thumbs:

http://www.clubcsl.com/CSL/blog/tool-angle.jpg

This one is to fill in oil in gearboxes / differentials and its very precise and you can use all the oil without wasting any of it.


http://www.clubcsl.com/CSL/blog/oil-bmw-tool.jpg

Here we can see the mighty crankshaft.
The engine is super clean inside. The 3k km oil changes are the reason behind it :whistle:

http://www.clubcsl.com/CSL/blog/csl-engine-01.jpg

I know what you are thinking, why is the crankshaft blue / purple ?
Don't worry, it's normal for some of these as they were heat treated from the factory.

http://www.clubcsl.com/CSL/blog/csl-engine-02.jpg

The bearings were not too bad, but not too great either.
I think timing was good.

http://www.clubcsl.com/CSL/blog/csl-bearings-00.jpg

In more detail

#1
http://www.clubcsl.com/CSL/blog/csl-bearings-1.jpg

#2
http://www.clubcsl.com/CSL/blog/csl-bearings-2.jpg

#3
http://www.clubcsl.com/CSL/blog/csl-bearings-3.jpg

#4
http://www.clubcsl.com/CSL/blog/csl-bearings-4.jpg

#5
http://www.clubcsl.com/CSL/blog/csl-bearings-5.jpg

#6
http://www.clubcsl.com/CSL/blog/csl-bearings-6.jpg

While doing all this work, I changed the leaking steering rack hose

http://www.clubcsl.com/CSL/blog/csl-engine-06.jpg

And the engine mounts - look the difference !

http://www.clubcsl.com/CSL/blog/csl-engine-07.jpg

And did the valve clearance again. Only 1 valve was slightly off :thumbs:

http://www.clubcsl.com/CSL/blog/csl-engine-05.jpg

Also, I changed the sparkplugs and the coil packs - also proactive maintenance.

All this was great but then I thought, it's good if I do this modification I always wanted to do.

Some carbon scavenged by a crashed Lamborghini GT3 racecar in Hockenheim.
The aluminium bolt is from a N54 engine.... because CSLs are meant to be light.

http://www.clubcsl.com/CSL/blog/csl-oil-catch-03.jpg

Here with the oil catch tank.

http://www.clubcsl.com/CSL/blog/csl-oil-catch-01.jpg

And mounted. The hoses are nice silicon ones.

http://www.clubcsl.com/CSL/blog/csl-oil-catch-02.jpg

The catch tank works great.

Excellent work! Those bearings were close mate lol. I do 5k Km oil changes

I was thinking the bearings Didn’t look to bad ,, were they the original. Or the king race as in the photo the first coating looks black like the king race. The original are more grey from memory ,, saying that mine were down to the copper colour on a few ,, at 65k miles ,, new shells can’t hurt :thumbs: always seems to be the upper shell that get most abuse

No they are the original ones.
I refitted original bearings and bolts.

The left ones are the bottom ones and as you can see on mine they are worse than the top ones.

A recent video from a dyno test

https://www.youtube.com/watch?v=o7pihEJ5aao

Not bad at all! Should make some more on fresh 98/99

Yes exactly :thumbs:

Nice :thumbs:

Still cant beat the induction note of a CSL :smokin:

Nice Al :thumbs: