I have a possible lead on a 300D OM617 manual flywheel but I don't have the part number to verify it's the correct thing. Can somoene with the EPC perhaps look this up? Thanks!

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1974 240D 3.0L 4(M) - 250K -OM617.910 + 300D FW + Rajay turbo power!
1977 6.9 3(A) - 84k

How do I look up parts not offered on US spec cars?

Sixto
93 300SD

Good question, I figured the parts catalog had everything, euro and all.

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1974 240D 3.0L 4(M) - 250K -OM617.910 + 300D FW + Rajay turbo power!
1977 6.9 3(A) - 84k

There is an auction on ebay right now for a 4-speed kit out of an 81 300D. You could e-mail him for the part number.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=010&item=200020066026&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

I got the part number from another source which has not been fully qualified but it is supposedly from the "Euro EPC" as they called it.

617 030 00 05

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1974 240D 3.0L 4(M) - 250K -OM617.910 + 300D FW + Rajay turbo power!
1977 6.9 3(A) - 84k

Shouldn't it have a 61x prefix?

Sixto
93 300SD

I would think it would but it was what the guy at Sun Valley Auto Dismantlers said it was. I was ecstatic becuase he quoted $100! I figure it would have a 617 prefix but that's what he said from the EPC....perhaps it is assumed that the number starts with 617?

Would the dealer be able to verify this?

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1974 240D 3.0L 4(M) - 250K -OM617.910 + 300D FW + Rajay turbo power!
1977 6.9 3(A) - 84k

It doesn't look like that kit includes a flywheel. Somebody is going to get an unpleasant surprise.

diametricalbenz- if you have a 240D flywheel could you post the weight diffrence between the two?

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Will do. I don't have either flywheel accessible with me currently but I will try to weigh them when I can find the 300D wheel for my conversion.

I know the 240D flywheel can be used for the conversion but if Mercedes thought it was sufficient they would have used it rather than spending the effort to engineer a heavier one for the OM617.

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1974 240D 3.0L 4(M) - 250K -OM617.910 + 300D FW + Rajay turbo power!
1977 6.9 3(A) - 84k

Thanks, I am interested to know the difference. You will probably have a smoother and lower idle as well as easier driving in stop and go traffic with the heavier flywheel.

Found this using google. Seems to sort of sum it up.
"Most manufacturers make the stock flywheel very heavy. This makes the engine very smooth and enables it to retain energy at part throttle cruise and up long grades for better fuel economy.

An Aluminum flywheel goes completely the other direction with almost no weight. This lets the engine rev up very quickly and allows the engine to work easier due to the reduced weight spinning around on the back of the crank. This is fine as long as you are at full throttle and wide open throttle all the time like in a Road Race or Drag Race only car. As soon as you let off the gas the engine RPM drops instantly and the car slows down. In a road car this causes surging and bucking at cruise speeds and poor driveability and clutch engagement.

Turbo cars are exceptionally critical to flywheel weight. Too light a flywheel will make the car rev faster and possibly come on boost faster but that is only half the issue. When you let off the gas to shift the car will drop off of boost just as quickly causing a poor transition when you come back on the throttle."

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

I already sent him an e-mail about that. He said that it includes the 300D FW.

Q: Does it come with the 300D manual flywheel? Aug-26-06
A: yes I does!

i believe the 240 fw weighs 28# and the 300 weighs 38#. with the heavy flywheel the 300 motor idles so smoothly you would swear it is a six. much much much smoother than the hoppy 300d with the automatic tranny.

the weight of it is no problem in shifting. mine was a euro 300d setup. normally aspirated.

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.

I have no problem using a 240D flywheel in my setup.

However, a smoother idle would be nice.

6170300005 according to http://www.detali.ru/cat/oem_mb.asp.

Ted

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1983 240D automatic, Orient Red, 174K
1983 240D manual, Biscayne Blue, sold at 341K

With an extra 10 lbs it's no wonder it is smooth, that is allot of rotational mass!

Another interesting read on lightened flywheels: http://www.pumaracing.co.uk/flywheel.htm

I'm happy to be using a 240 flywheel personally.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine