Diesel Performance Tuning
 

Welcome to the new forum.

We've dedicated this forum to those who wish to extract additional performance.........above and beyond factory specifications...........from their diesel Mercedes.

Accordingly, it is requested that all threads be relevant to performance increases and not how to make the vehicle perform to factory specs.

I'll also request to please advise me of any existing threads on DD that should be moved to the new forum.

Thanks.

Thanks Brian,

Looking forward to seeing what the Members are bring'n to the table in regards to making our diesels go quicker!

Wunderbar!

Sorry for all my locked threads. I tend to lock my old ones as time passes and they are no longer relevant to my situation or I just feel like I don't want them brought back to the top.

excellent!

Hello - this is very timely. Looking forward to a treasury of info. I can apply to my 85 300D Turbo.

wheres a guide to turn up my pump?

Here's a detailed guide on how to make the full load adjustment. I suggest reading through all that information then spending a lot of time searching on this site before you make any adjustments to your IP. It's really easy to damage your engine if you're not careful.

http://www.superturbodiesel.com/std/ip-full-load-adjustment-procedure-for-mw-pumps-t-189.html#pid1

Thanks! Thats a huge help!

Removal of EGR Valve
 

This is probably old news, but I would like to share my results. Removing the EGR Valve did improve the performance of my car, although it was only considerably noticable in the mornings. The upper part of where the EGR Valve used to sit consists of a simple plate, 1/4 inch aluminum, and the bottom is the remains of the EGR tube. I cut the tube leaving about 3/8" inch. The tube itself slightly narrows. A US quarter fits perfectly inside and it will not push out. Then, I poured in JB weld behind it and let it sit overnight. Next morning, JB weld on the front, but the front only permits a thin coating. The factory clamp goes on perfectly since you are using the original EGR tube, although just 3/8" of it. No leaks, and when you hit the pedel on cooler mornings, the old greazzer will hit 50 mph pretty quickly -- certainly quicker than before with the EGR.

617 Performance
 

How would one bump up the mileage through these adjustments?

Fuel
 

I am new to this so hello. I have a 84 300D that i get around 26 to 30 mpgs and can still take off and power brake with no problems with simple adjustments and changing out that air intake system will have pics to show soon I also drive spirited and its hard to get a puff of black smoke out it cuz its running right with 238000 miles on it. I would like to get more info on whats up with the garret turbo and adjusting it. and use royal purple.

i have a garett turbos layin around and i have a kkk on my daily driver is it worth swappin out

updated link...

IP Full Load Adjustment Procedure for the MW and M pumps

Guys, I'm in the UK, I have a 99 w210 e300 606.962 I think is the engine, straight six 24 valve turbo intercooler not common rail you know the engine i mean, anyway what's the first thing to do to get more power without spending lots of time or money.

you could simply pump 10 psi,of propane into the intake,and have a switch for full throttle. Instant 100 hp.

Really? Propane straight into the intake ie air filter. Sounds too good to be true

Supercharger for 240D
 

Hello everyone,
am in the process of buying a 1980 240D/ Manual Trans/ 166 000Miles.
Here is my question. I found an AMG Supercharger on line. It is supposed to be for the 240D. Does anyone have any experience with this?
The price is right, around $200.- for the kit
But, does it do anything positive to the performance?
Does it have negative effects on the engine?
Or is it simply a pure waste of time and money?
Thanks guys,looking forward to your replys.

Cheers
Chris

Sounds cool. Just keep in mind that with any diesel (or any engine for that matter) you need a way to get more fuel into it along with the additional air. Adding the supercharger will do nothing for you and "turning up the pump" will only go so far as well as pushing the boundaries of injection timing duration, etc...

The proper way to do it is to have the injection pump rebuilt with larger elements. There are some custom 6.5mm pieces available but this process isn't cheap.

BTW AMG never did superchargers for diesels but did sell STT turbo kits.

Got any pics?

Heck, at $200 I'd probably just buy it. Costs about that much to make your own turbo exhaust manifold when everything's said and done.

The guys who have turboed 240s all have good things to say, just make sure you buy a pyrometer.

So far for my 82 300d I've removed that junky stock air cleaner style intake and installed a simpler, more efficient conical filter setup which releases blow by as exhaust and not spewing hot air and oil into the turbo and intake. It sounds great, you can really hear the turbo, but you only notice a power gain when you're accelerating at 70mph+.

I've also done an egr delete and that's made a more noticeable difference. The car also runs at 90-82*C when it used to run at 100-90*C, so significantly cooler.

I eventually plan on taking off the turbo and intake manifold to clean and re-gasket.

Also, I plan on removing the hood insulator and instead painting the bottom with high heat wrinkle paint to further lower engine bay temp.

Hi,
thanks for all the feedback.
@NZScott
Here is the official Title and link
http://www.ebay.com/itm/Mercedes-Benz-Electric-Turbo-Air-Intake-Supercharger-AMG-Fan-Kit-FREE-USA-SHIP-/261269240880?hash=item3cd4dc3c30&vxp=mtr:
Mercedes Benz Electric Turbo Air Intake Supercharger AMG Fan Kit

Oh deary me.

No. Just no.

Those things are just gimmicks, a leaf blower would push more air. :)

Wow, those kits are completely fraudulent. Don't waste your money.

Diesel coolant filtering system
 

I know that many larger diesels use diesel filter systems to clean the crud out of the water passages on a continuous basis.

I am looking to do the same with a passive system that uses the flow created by the coolant pump to move the fluid through the system.

My plan for each car that I do is to:
1. drain the coolant
2. do the citric acid test after washing
3. replace the coolant
4. add a filter for the future

Has anyone done this?>

The truck filters are very large and some have their own pump, which might disrupt the flow through the smaller car water jacket.

Any and all info appreciated, especially brands, prices and discussion of problems

There's an engineer who writes a column called Bob is the Oil Guy and he is doing this but I have too many questions and his experiment involves a small $1.00 fuel filter.

If I did this, it would be with brass and glass, so it could be reused and cleaned. Plus no chance of leaks due to action of the coolant on the glue holding the filter together.

Thanks!

A main function of the coolant filter in large diesels is to maintain the correct SCA levels in the coolant, the "filter" wears out as the SCAs are consumed.

Although this is more important in a large wet-sleeve engine than in our little dry-sleeve engines (to prevent cavitation pitting), you can buy SCAs and diesel coolant from many sources, mine usually comes from Caterpillar. For the Mercedes though, replacing the coolant every 2years with the correct HOAT (Zerex G-05 or Mercedes) will work for most of us.

Sleeper project
 

Hello I'm new to this forum. I purchased a 1983 300sd it has 178000. The odometerhas stopped working on it. There is no rust to be found underneath the car, all of the floorboards are intact. The car is currently in the shop to be brought back to factory specs. This is going to be my project car for now. I'm trying to make it a super sleeper. What can I do and what can the car handle.

smell inside
 

Hello ,. my car E270 CDI 2000 year.while driving i feel smeel inside like dust.Can you give any suggetion what part need to be checked or adjustment.

also during 4 years i never cleaned diesel injector . is it good idea?

thanks in advance