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  #16  
Old 08-14-2013, 10:29 AM
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Quote:
Originally Posted by winmutt View Post
Unless you plan on a VNT/VGT I would keep the ALDA. I honestly don't understand the point of extra gears unless it was cheaper. If 4th was 1.0 and 5th 0.93 and 6th 0.84 that would be swell. Be careful of your EGT's in overdrive. I find that my engine runs much cooler in 4th compared to 5th at the same speed/incline. I can hit 60 in 2nd gear now, adding more gears would simply mean a slower time to speed.

All the same still cool swap. I believe the 6spd is higher rated torque than any of the 5 speeds including the dogleg 16v. Do you happen to know if that is true? I can probably dig up that ref somewhere. It is a real concern for me.
I dont mind the "extra gears..." as far as torque, I'm not sure what the trans is rated for, but the 02 c230 would put out 192hp and 200 ftlb torque. I've herd rumors of someone having one of these behind a 800 ftlb of torque motor...

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  #17  
Old 08-14-2013, 12:24 PM
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Originally Posted by t walgamuth View Post
The first gear is significantly lower in that 6 speed allowing more comfortable take off from stop. With my five speed od conversion on the 300D with 307 diff, taking off was tricky with the very tall first gear.
Not sure how a lower first gear would help with off the line smoothness?
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  #18  
Old 08-14-2013, 12:45 PM
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Originally Posted by winmutt View Post
Not sure how a lower first gear would help with off the line smoothness?
why? the lower first gear should make up for the tall rear diff in first...
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  #19  
Old 08-14-2013, 12:48 PM
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I really don't see any issue with the gearing. I've driven the 2.64 diff x 3.86 first gear all over San Francisco with plenty of hill starts. The only thing holding back off the line acceleration is the ALDA. I can let out the clutch slowly without accelerating and the car simply moves forward without stalling. It'll even climb some hills in first gear at idle. This engine has so much more low RPM torque than the 2.6L M103 the gearbox came out of.
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  #20  
Old 08-14-2013, 01:06 PM
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Quote:
Originally Posted by winmutt View Post
Not sure how a lower first gear would help with off the line smoothness?
Try taking off in second. Not really smoothness just not easy to launch quickly if needed.
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  #21  
Old 08-14-2013, 09:03 PM
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603 is completely different than 602. The power difference is dramatic, especially in low-end torque before boost builds, and it's worse at higher elevations. The extra low 1st gear in the 6-speed might make it tolerable, but I'd still swap the diff.

I assume you'll be modifying the pump, if you're installing a garret t25/t28 hybrid. The turbo change alone won't increase power, and there's only about 10-20% power gain possible with stock 5.5mm elements. Dieselmeken in Germany, or Myna Diesel, can fix that...

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  #22  
Old 08-14-2013, 09:16 PM
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Thank you very much for doing the research and putting the thread together! I suppose that this would alo apply to the OM606 (my favorite Mercedes diesel)? I'd like a 1995 W124 wagon with an OM606 and 6-peed manual... a guy can dream, can't he?
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  #23  
Old 08-14-2013, 09:25 PM
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If that transmission is the the G56, it is also used for 3500 Dodge Ram Diesels. The G56 is plenty strong -- here's more on it.
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  #24  
Old 08-14-2013, 09:36 PM
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Quote:
Originally Posted by t walgamuth View Post
Try taking off in second. Not really smoothness just not easy to launch quickly if needed.
Thats what I am saying.
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  #25  
Old 08-14-2013, 11:07 PM
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Originally Posted by Jooseppi Luna View Post
If that transmission is the the G56, it is also used for 3500 Dodge Ram Diesels. The G56 is plenty strong -- here's more on it.
I am no expert, but I'm pretty sure it is not the same, this is the mercedes 716.6xx trans out of the 01-03(?) c230 kompressor supercharged i4. And yes you can dream, I still am(just waiting for my wallet to catch up!)
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  #26  
Old 08-14-2013, 11:20 PM
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Originally Posted by winmutt View Post
Thats what I am saying.
Where did I say anything about smoothness?
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  #27  
Old 08-15-2013, 09:59 AM
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Thumbs up

Great Job OP. Love to see custom work!

FWIW - I have used the gear calculators and they help with trans/diff/wheel combinations. Although we spend more time on it for offroad, it applies onroad too. Gear Ratio Calculator
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  #28  
Old 08-15-2013, 11:11 AM
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300d automatic with 2.64 diff

300d 5spd swap and 2.64 diff

300d 6spd swap with 2.64 diff

Just plug in any number you want for the "final drive ratio" and hit submit.

cheers
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  #29  
Old 03-31-2015, 09:19 PM
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Would a complete set of doner parts from either a C-class or SLK work?

Was there an incompatibility that led to the decision to use half parts from the SLK and half from the C-class or was it just that was what you were able to find?

do you think this 6-speed will fit into a w201? It looks a little bigger in your pictures.
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  #30  
Old 04-18-2015, 12:24 PM
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Which trans?

2002:

203 Type, M.T., C230 (Cpe), type 716.633 or 716.663
203 Type, M.T., C230 (Cpe), type 716.668
203 Type, M.T., C240 (Sdn), type 716.?

Which one?

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