Carbureted M104 possible? - Page 2 - PeachParts Mercedes-Benz Forum

MAG58 · #16 01-19-2010, 09:07 PM

Quote:

Originally Posted by RBYCC

If you intend to use Webers then the best setup would be three 45DCOE's.
For racing they are great, but street not so good...no chokes and without a flame box they tend to catch fire on starting.
Not the easiest to synchronize.
Lived with this setup for many years on a 4.0L I-6 Aston Martin Vantage engine.

I've ran one on my mini and a pair on my datsun. They have a choke, just not as one would think. IF you want the traditional flapper choke, mikuni 44PHH's give you that with more streetability and 99% the power

locry · #17 01-19-2010, 09:38 PM

Quote:

Originally Posted by 2.5-10

here's a thought.... just ditch the M104 and go with the OM603 or 606.

no circuitry there..... and they bolt to the same transmissions.

this is the original plan... just thinking of ways to salvage the m104...

coal power would be awesome!

wolf_walker · #18 01-20-2010, 12:46 AM

Quote:

Originally Posted by MAG58

True, but at the current it is heinously expensive to modify or gain performance out of the current crop of Gasoline DI engines outside the realm of stock parts.

They also do have a rev limit currently iirc they can't just go static or fire through multiple strokes.

Give em time. Same was said about EFI a few years back, look at it now, people build em on the kitchen table.
I like carbs too, I've had lots, I have a couple now, they are still piss poor
for daily use more often than not compared to EFI.
Or even MFI/K-Jet.

To the OP, I vote diesel if it's an option. Screw gas and it's assorted BS.

MAG58 · #19 01-20-2010, 12:56 AM

Quote:

Originally Posted by wolf_walker

Give em time. Same was said about EFI a few years back, look at it now, people build em on the kitchen table.
I like carbs too, I've had lots, I have a couple now, they are still piss poor
for daily use more often than not compared to EFI.
Or even MFI/K-Jet.

To the OP, I vote diesel if it's an option. Screw gas and it's assorted BS.

I'm not sure about that. DI Gas is pretty much like Common Rail Diesel with more headaches and spark control. Those peizeo injectors aren't cheap and I don't see them getting that way. The control modules maybe, but there's a substantial amount of work to make them.

I agree here, if the option is there, go common rail diesel, of if you just don't like the modern technology of electricity, go for an OM603 or just any non CR diesel. Hell could freeze over and three apocalypses could come and it would still be rattling along.

2.5-10 · #20 01-20-2010, 07:32 PM

Quote:

Originally Posted by locry

this is the original plan... just thinking of ways to salvage the m104...

coal power would be awesome!

only downside... they arent free.

seriously though, a whole MS setup will only cost you $550 or so and they are potent beasts with it.

locry · #21 01-20-2010, 10:12 PM

yup, i'm doing research on MegaSquirt and MegaJolt, they seem to be easy to work with... though as i've said, i've never worked on compuer controlled engines, and am just now learning in depth how EFI works while reading up on MS/MJ. it looks intimidating but is quite straightforward.

but there are basic things about the m104 that i need to understand first... the distributor on the exhaust cam as mentioned by MAG58, is it a real distributor or is it just a cam position sensor? what does it output? the guys at MS are asking. And what about the coil system... does it have coil packs(3)... or single coils(6) for each sparkplug?

If someone has experience with megaJOLT, does it simply get it's INPUT from the cam position sensor?

thanks... this option looks promising... and will open up a whole new world of engine tuning and restoration options for me.

Though i STILL am a DIESEL guy.

dhaghighi · #22 01-20-2010, 11:17 PM

If you have the M104.980 like me.....it is a very nice setup.

The distributor on the exhaust cam is a true distributor. There is one coil located near the power steering pump.

The car is equipped with true Bosch CIS fuel injection, which is very elementary in concept, and the ignition system is old school....without coil packs....which I love!

locry · #23 01-21-2010, 12:11 AM

Identifying engine components W210 M104.995
here's a link to the engine components... where's the distributor?!

MAG58 · #24 01-21-2010, 04:15 AM

You have the late model M104. No Dizzy on that gal. All Electronic.

RBYCC · #25 01-21-2010, 12:39 PM

Quote:

Originally Posted by locry

yup, i'm doing research on MegaSquirt and MegaJolt, they seem to be easy to work with... though as i've said, i've never worked on compuer controlled engines, and am just now learning in depth how EFI works while reading up on MS/MJ. it looks intimidating but is quite straightforward.

but there are basic things about the m104 that i need to understand first... the distributor on the exhaust cam as mentioned by MAG58, is it a real distributor or is it just a cam position sensor? what does it output? the guys at MS are asking. And what about the coil system... does it have coil packs(3)... or single coils(6) for each sparkplug?

If someone has experience with megaJOLT, does it simply get it's INPUT from the cam position sensor?

thanks... this option looks promising... and will open up a whole new world of engine tuning and restoration options for me.

Though i STILL am a DIESEL guy.

Not to burst anybody's bubble, but using a Megasquirt or similar system will not make the M104-24V much faster then if it's properly tuned with the stock HFM.

Oracle12345 · #26 01-21-2010, 12:41 PM

Quote:

Originally Posted by RBYCC

Not to burst anybody's bubble, but using a Megasquirt or similar system will not make the M104-24V much faster then if it's properly tuned with the stock HFM.

yeah

locry · #27 01-27-2010, 02:13 AM

but the entire MS system seems to be a whole lot cheaper than replacing all the electronics with original equipment...

the engine was submerged, the MS is just a last ditch effort to salvage the engine... if and when the submerged electronics fail.

when that happens its gonna be a diesel swap...