ESS M3 DCT

Eust

Well-known member
So, first thing I had done on the car is swop out the bearings again with Sav and give the car a full inspection.
These had 23k km on them, about half of that supercharged.
Screenshot_20211202-090913_WhatsApp.jpg
 

922-ZN

Well-known member
Those are some rough looking bearings for only 23 000km!
Agreed, seems like alot of pitting also.

@Peter@AEW Could something else be up?

It's also worth checking the main bearings(while it's open) on Supercharged cars(specifically the front of the motor), these have been known to fail. Not on the scale that rod bearings go, but they do fail.
 

Eust

Well-known member
Sav is checking everything out.
Main reason I also wanted to change them was that the car was only driving 10km a day round trip from the previous owners house to work.
That's no time for oil warm up and noone is going to consistently warm up their car before starting the trip to work. Hence I thought there would be excessive wear on this, +supercharged
 

Peter@AEW

BMWFanatics Advertiser
Official Advertiser
Agreed, seems like alot of pitting also.

@Peter@AEW Could something else be up?

It's also worth checking the main bearings(while it's open) on Supercharged cars(specifically the front of the motor), these have been known to fail. Not on the scale that rod bearings go, but they do fail.
Detonation in abundance!
I hope you are not fitting ACL bearings.
 

Eust

Well-known member
Sav is putting in ACL Race bearings as far as I understand.
Is the detonation due to the excessive heat generated and should I be using OB in this car?
 

922-ZN

Well-known member
Sav is putting in ACL Race bearings as far as I understand.
Is the detonation due to the excessive heat generated and should I be using OB in this car?
You HAVE TO run proper fuel in this thing. If the cars detonate in n/a form and even in stock form under our fuel conditions, what do you think it's doing considering its charged now?
In my n/a car, I have gone up to 35% Ethanol and all was well, the car loved it.
Supercharged cars have been happy up to 20% on the stock fueling system, but I would suggest you have the tune looked at as well as running some logs to monitor timing pull/advance, short and long term fuel trims under pump fuel and ethanol mix and compare the 2.

+1 on what Peter said, DO NOT use ACL, if you are dead set on an aftermarket bearing, I would rather go with BE bearings.
That being said, rather put the OEM bearings as the jury is still out on all aftermarket bearings. The bearings themselves were never the issue of premature wear so why change a part that isn't the cause?
 

QikNish

Well-known member
Thanks for the comments Gents.
Where can I get ethanol and should I maybe use this as an option too: https://atomixvapes.co.za/product/nf-additives-nf-ultra-unleaded-race-fuel-concentrate/

Chatted to ESS and they want to check that the latest sw is on as that has "excellent adaptation, so will only cause an issue on 87AKI", which is 91. I will obviously still put the insurance policy of increasing octane.
Even though they say its safe on plugs / o2 sensors... i found using the stuff fouled up plugs badly. Ive even changed an O2 sensor and never used the stuff after that.
 

922-ZN

Well-known member
Thanks for the comments Gents.
Where can I get ethanol and should I maybe use this as an option too: https://atomixvapes.co.za/product/nf-additives-nf-ultra-unleaded-race-fuel-concentrate/

Chatted to ESS and they want to check that the latest sw is on as that has "excellent adaptation, so will only cause an issue on 87AKI", which is 91. I will obviously still put the insurance policy of increasing octane.
Our fuel is more like the US 83 octane, send logs to ESS to go through as well, let them know you want to run an ETH mix.
Stay away from NF, period
 

ajm

Active member
I've used NF Ultra in several cars over the last decade without any issue. I'm sure it has the potential to foul the plugs if the mix ratio is strong. I generally mix 1 bottle with 40 litres of fuel. I constantly data log and can vouch for the effectiveness of NF (in terms of limiting timing retard) even at the modest ratio used by me. More recently, I've also been adding 10% eth. Eth, even in such a modest volume, is beneficial on my cars, but you need to be sure of the ratio in your tank at any given time, lest you may enhance the risk of maxing out your fuel trims with potentially catastrophic consequences
 
Definately some good measures in place here bud.

I still think water Meth would be a good thing to install on the car.
maybe give Tiaan at The Meth Lab a call.
if its not a daily then yea run 30% eth. car will feel alive.
 

ajm

Active member
Water meth can be a good option both for fueling and cooling. The issue I had running meth on my E55 was that it caused the car to run too rich. Adjusting the jet size to negate the richer AFRs would also negate the cooling benefits and drastically limit the octane benefits. The only work-around was to tune for meth which, for obvious reasons, I chose not to do. Not sure if the OP would have the same challenges on the M3
 
Water meth can be a good option both for fueling and cooling. The issue I had running meth on my E55 was that it caused the car to run too rich. Adjusting the jet size to negate the richer AFRs would also negate the cooling benefits and drastically limit the octane benefits. The only work-around was to tune for meth which, for obvious reasons, I chose not to do. Not sure if the OP would have the same challenges on the M3
Ye i do think on a supercharged car as opposed to Turbocharged does differentiate it slightly. keen to see the way forward.
 

Eust

Well-known member
So Gents, I have been contemplating the octane booster / meth setup and wanted to get your views on the LM Octane Plus.

I was thinking of running that as I can get it for R100 per 150ml can, but it only increases the octane by between 2 and 4 points, which is minuscule. Is it worth using as an interim until I get the fueling sorted long term via meth etc?
 
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