Hi all, I'm a new member here. I have recently gotten my hands on a 91 300TE with the Mosselman twin turbo intercooler setup. I'm no stranger to Mercedes as I have been a M/B technician for 8 years. However this is the first one I have owned. It has a combustion leak into the cooling system. So the head has to come off. I'm really leaning towards pulling the whole engine out to put lower compression pistons in while I'm at it. I'm also contemplating ditching the mosselman I/C for a frontmount I/C and relocating the the a/c condensor.

Any thoughts, ideas, experience from those who've been down the M103 twin turbo road?

Thanks
Duck

That sounds like a interesting car you have, what is the intercooler like at the moment, is it a charge cooler or just a small conventional air to air type.Have you looked at the superdiesel post the guys in Finland have managed to squeeze large I.C.s into the front of 201s & 124s. any pictures?
Regards Linds

The I/C on the car originally came with the Mosselman setup. It is an air to air type I/C but it just sits on top of the engine and mounts directly over the air horn assembly. It is not in the air stream at all. Seems to me that it is more of a heat soak than anything. Hence the want to get a real I/C out in front. Sorry, no pics yet. Hopefully soon. Do you have a link to the superdiesel? site?

Sounds like you need a nice water to air unit. It should be easy to find. Just do a word surch on google and you should get some nice hits. The air to water will allow remote mounting of the heat exchanger. The air to water heat exchanger is considerably smaller than a comparable air to air unit.

please do post some pictures

__________________
198? 300D ???K - Future DD
1989 300TE 285K - traded in '12
1984 300SD 186K - Sold in 08
1978 300SD 330K - Died in 05

I grabbed the keys and popped the hood today for a closer look. The I/c is actually connected to the air scoop for the original air filter from underneath. It hardly seems adequate. Especially considering what I want to do with the car. I have a weakness for boost. My daily is a 97 900SE with 20psi. So I'm really thinking I might go nuts here. I'm thinking somwhere around a 600 hp target. That of course is gonna take a lot of I/C squeezed in between the headlights. Unfortunately, that is not gonna happen until next spring. I'm gonna fix the top end for now and drive it over the winter. It is a 4-matic after all and they're predicting a lot of snow for the Rocky Mtns this year.

You might want to investigate one of the more sophisticated water injection setups to augment your IC. This could virtually eliminate your detonation issues and boost HP figures as well. Check out this forum:
http://www.aquamist.co.uk/phpBB2/viewforum.php?f=6

I'm currently acquiring parts and in the research and development stage for the installation of a small side mount IC from a Saab turbo along with water injection for my OM603.

Here's a video of those crazy Finns and their 400+hp OM603 with a massive FMIC and Holset turbo from a 9 liter Scania truck engine.
http://www.ejzcars.com/liukasta.mpg

Cool video clip!!! Turns out I've got a 603.970 on the engine stand and down to the shortblock. It broke it's timing chain and tore up everything in the front cover. I was hoping to get it's crankshaft (91mm) but the reciprocating assembly is ok and the customer paying to put it back together.

please let me know if anyone finds compatible cams and cranks for the M103 (2.6)

I would think you could find a 3.5 crank around in an engine that has the bent rod problem.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

What does a M103 Mosselman kit cost?

No longer made for the M103/M104.
Last kits were around $9000.00 !!!

A few TurboTechnics kits may still be available, they are circa 1991-1992 and were being sold by a UK Merc dealer "Hughes of Beaconsfield"

They had a blow out sale to clear inventory.
My M103-12V kit which included a full dual 2" SS exhaust cost $2600.00 delivered to my door.

In the early nineties Hughes installed the kits on new delivery W124's for around 6000-7000 pounds sterling !

ED A.

__________________
http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

Thanks for the info. I have contacted Hughes to see if they have any more kits.

How many hours for install by a professional would you guess?

I had a professional install done by one of the few "experts" on turbo charging M103/M104 engines.

His experience goes back to the early nineties with many Mosselman installs.

He originally estimated 40 -50 hours based on Mosselman.

The TurboTechnics kit had its problems with mismatched parts and a less then adequate piggy back fuel enrichment control.

Took time and research on both my part and his to sort out.

Ended up around 110 hours which included the TT install, full exhaust, engine mount, springs, shocks, sway bars.

Knowing the necessary changes to install would probably cut 20-30 hours off the install.

If you get a kit let me know, can probably save you some time and money.

Get the install correct and you have an extremely fast W124...
I'm running low 5 second 0-60 times with a M103-12V which has become a real "torque monster " !!!

Ed A.

__________________
http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

the 350 td crank in a standard 103 makes 3.4 liter, that is the crank amg used for there 3.4 convertions, same crank with rebore is what made 3.6 amg and 3.6 brabus 103s. good find man they are nearly a rare as hens teeth!