Euro IP vs US IP - PeachParts Mercedes-Benz Forum

Madmax55 · #1 08-09-2011, 09:54 AM

Hey guys, is there really a difference? I read someone saying that the euro one is sought after. My 78 300D just had an engine from an 85 300d euro put in(non turbo) and the IP looks a lot smaller and does have a manual shut off. So now I have two, one on the valve cover and one on the IP itself. Any other differences? Is the the Euro one better?

boneheaddoctor · #2 08-09-2011, 10:05 AM

Different...the Euro is a Type M....the US a type MW.

Stock and unmolested....they work the same for the most part. For your purposes with a stock non-turbo consider them the same. But there really are significant differences between them mechanically.

But the Euro has value to those with the Turbo engines that are trying to make a lot more power because the Type M can have its elements swapped out by a shop that knows what they are doing and know where to get them and other modifications done. The MW doesn't have the benefit of alternative parts being available.

Diesel911 · #3 08-09-2011, 11:54 AM

The Euro M Pump has O-rings and Crush Washers to seal the Delivery Valve Holders, the MW has only Crush Washers. So it could be if you have a Car with the M Pump you may need to change the O-rings at some point.

NCfriend · #4 08-09-2011, 12:56 PM

Quote:

Originally Posted by Diesel911

The Euro M Pump has O-rings and Crush Washers to seal the Delivery Valve Holders, the MW has only Crush Washers. So it could be if you have a Car with the M Pump you may need to change the O-rings at some point.

How hard is a new set of O-rings on a M pump?

And what are the signs it is due, or is there a preventive mileage date for this job?

=new Euro TD owner

sixto · #5 08-09-2011, 01:07 PM

Can the barometric pressure compensator (ADA?) for a normally aspirated M pump be replaced with an ALDA for use in a turbocharged engine? Not as simple as that?

Sixto
87 300D

boneheaddoctor · #6 08-09-2011, 02:25 PM

Don't think so......I have both pumps at home....but never opened up the Euro pump to see its guts. I would assume no...because outside of some screws, nothing else interchanges.

ForcedInduction · #7 08-09-2011, 11:18 PM

Quote:

Originally Posted by Madmax55

Is the the Euro one better?

Yes. The American's MW is "technically superior", but only because it can produce higher injection pressure and has larger factory element options.
The Euro M is much better suited to automotive use since it runs smoother and quieter. Thats why Mercedes used them up to 1976 with the pneumatic governor and after 1985 on all their OM60x engines.

Quote:

How hard is a new set of O-rings on a M pump?

All it takes is a 30-spline socket and a 17mm wrench.

Quote:

Can the barometric pressure compensator (ADA?) for a normally aspirated M pump be replaced with an ALDA for use in a turbocharged engine?

Yes, they are the same design but with different sensitivity. That and the governor adjustments are the only differences.

BHD, you're thinking of the difference between MW and M. He is asking converting a non-turbo to turbo pump.
The M pump can easily be installed on an American engine. All you need to change is the throttle linkage and block the oil line (The M pump is lubricated through the main shaft).

Hey BHD, what happened to Shuman, did he ban every one else that was trying to help him?

Diesel911 · #8 08-10-2011, 12:31 AM

Quote:

Originally Posted by NCfriend

How hard is a new set of O-rings on a M pump?

And what are the signs it is due, or is there a preventive mileage date for this job?

=new Euro TD owner

No preventive mileage data. Just change them when the leak.
I believe there is Viton O-rings if you want them; but not from the Dealer.

Should be the same proceedure as the newer 6 cylinder M pumps in the DIYS.

DIY Repair Links
http://www.peachparts.com/shopforum/forumdisplay.php?f=82
http://www.peachparts.com/Wikka/DoItYourSelf

compress ignite · #9 08-10-2011, 03:17 AM

BHD,

What (Eastern European Pre-"Wall Coming Down" ) Military Hat is your Avatar
equipped with?

boneheaddoctor · #10 08-10-2011, 09:14 AM

Quote:

Originally Posted by ForcedInduction

Yes. The American's MW is "technically superior", but only because it can produce higher injection pressure and has larger factory element options.
The Euro M is much better suited to automotive use since it runs smoother and quieter. Thats why Mercedes used them up to 1976 with the pneumatic governor and after 1985 on all their OM60x engines.

All it takes is a 30-spline socket and a 17mm wrench.

Yes, they are the same design but with different sensitivity. That and the governor adjustments are the only differences.

BHD, you're thinking of the difference between MW and M. He is asking converting a non-turbo to turbo pump.
The M pump can easily be installed on an American engine. All you need to change is the throttle linkage and block the oil line (The M pump is lubricated through the main shaft).

Hey BHD, what happened to Shuman, did he ban every one else that was trying to help him?

I wasn't aware the poster was doing a turbo conversion or was planning one. I got the impression both engines were non-turbo...but one was US market and the other Euro.

I have an M pump for Myna to work on if the exchange rate ever improves...too damned expensive for me at the current rates.

If he's after a lot more power and has the coin to spend....the Myna modified M is the only choice in the game...if he's after stock power or a little more...the MW is more cost effective....

Nope...Its invitation only at the moment. We have our reasons and I don't want to air them to anyone. But we are still live and online.

winmutt · #11 08-10-2011, 10:20 AM

Quote:

Originally Posted by ForcedInduction

Yes. The American's MW is "technically superior", but only because it can produce higher injection pressure and has larger factory element options.
The Euro M is much better suited to automotive use since it runs smoother and quieter. Thats why Mercedes used them up to 1976 with the pneumatic governor and after 1985 on all their OM60x engines.

Additionally the MW is easier to tune, the M is much cheaper to produce.

ForcedInduction · #12 08-10-2011, 06:57 PM

Quote:

Originally Posted by boneheaddoctor

I wasn't aware the poster was doing a turbo conversion or was planning one. I got the impression both engines were non-turbo...but one was US market and the other Euro.

"Can the barometric pressure compensator (ADA?) for a normally aspirated M pump be replaced with an ALDA for use in a turbocharged engine?"
To me, it looks like he wants to put a non-turbo pump in a turbo engine.

Quote:

Nope...Its invitation only at the moment.

Yeah, sure... that explains why the forum is dead.

Quote:

Originally Posted by winmutt

Additionally the MW is easier to tune, the M is much cheaper to produce.

So? The RW governor is very primitive compared to the precise nature of the RS. Hell, the RW just has a hanging chunk of metal limiting rack travel!
A much smoother and well tuned engine can be made with the M-Pump and its RS governor.

boneheaddoctor · #13 08-10-2011, 07:10 PM

got rid of content not applicable to thread

Sure the posted asked that question...but it doesn't mean he is doing a turbo....his new engine is a 1985 non-turbo Euro engine.....his car and old engine was a 1978 non-turbo. Maybe they can come back and clarify that for us.