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> Mercedes-Benz OM617 engine, STRANGEST GAS PEDAL EVER!
Rudy
  Posted: Apr 26 2012, 11:52 PM


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This post has been edited by Demon Boost on Apr 26 2012, 11:54 PM
MetalMan777
Posted: Apr 27 2012, 05:56 PM


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Diesel with cable controlled mechanical injection pump, need I say more?

The BMW M21 engine was way smoother.
Rudy
  Posted: Apr 27 2012, 07:13 PM


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Lonely_Driver
Posted: Apr 27 2012, 07:47 PM


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QUOTE (Demon Boost @ Yesterday, 11:52 PM)
Alright, so I was test driving a 300D a few days ago and... my God, does that car have the world's strangest gas pedal.

It's hard to explain, but basically, the gas pedal doesn't work like one on normal cars. You can press it halfway down and nothing happens. Then at 3/4 throttle, the car sort of starts to move and if you give it just a little more than 3/4 throttle the car just takes off!

It's so flipburgers ridiculous. The look on my face was like Takumi when he felt his new clutch pedal. I thought something was wrong with the car, but the owner invited me to test-drive his other 300D and I got the same result!

From what I'm hearing, this is typical of these cars... but... why? What makes them so funky and nonlinear?

They're also both very rough running engines, why is that? The owner said that is also quite normal of these 5-cylinder oddballs.

maybe the throttle body was dirty and sticking.
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Rudy
  Posted: Apr 27 2012, 09:25 PM


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sideways
Posted: Apr 27 2012, 10:28 PM


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Indeed- no TB on diesels. The pedal controls how much fuel goes into the engine.

This post has been edited by sideways on Apr 27 2012, 10:28 PM
Lonely_Driver
Posted: Apr 28 2012, 05:32 AM


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QUOTE (sideways @ 7 hours, 4 minutes ago)
Indeed- no TB on diesels. The pedal controls how much fuel goes into the engine.

Modern diesels have a throttle body that closes on idle to reduce emissions

But yes that was a troll post, Demon caught me.
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HorizontalMitsubishi
Posted: Apr 28 2012, 01:43 PM


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you also forgot that the 300D weighs as much as a small office building.
Rudy
  Posted: Apr 29 2012, 10:16 AM


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MetalMan777
Posted: Apr 29 2012, 02:28 PM


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I think ALDA is only on the turbo models.

Either way, these old diesels work on black magic. The throttle response is probably non-linear because it takes an animal sacrifice to properly calibrate the injection pump. Electric injection is the best thing to happen to diesel technology.
Rudy
  Posted: Apr 29 2012, 05:29 PM


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MetalMan777
Posted: Apr 30 2012, 01:06 PM


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Yes, Turbos make them peaky, and that's probably the exact reason the throttle isn't linear. You won't really start building boost till you're really laying on the pedal. These aren't the most sophisticated turbo setups.
Rudy
  Posted: Apr 30 2012, 01:35 PM


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MetalMan777
Posted: Apr 30 2012, 02:06 PM


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Probably not. I'd still take it to a specialist and have them calibrate the injection system. Particularly if you get a bio-diesel or straight veg oil setup. If you really want to make it respond better, put a more modern turbine on there.
Rudy
  Posted: Apr 30 2012, 07:06 PM


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MetalMan777
Posted: May 1 2012, 01:36 AM


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I can't speak to their durability, but the Germans, MB and BMW in particular will reproduce about any part, if they don't already have it on a shelf. The parts won't be cheap, but good luck getting any sort of parts support 30 years down the road from a domestic.

I think you're probably safe to daily drive it for a long time. Just over 100 horses isn't particularly taxing on a 3.0. The transmission I have no idea about, I don't do automatics. I know a manual swap in these things isn't unheard of.
Rudy
  Posted: May 1 2012, 09:47 AM


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MattW
Posted: May 2 2012, 09:38 PM


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QUOTE (Demon Boost @ May 1 2012, 12:47 PM)
Torque is almost double the HP.

its a diesel...that's what they do.
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Posted: Mar 5 2013, 07:45 PM


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QUOTE (Dorifuta @ Apr 26 2012, 11:52 PM)
Alright, so I was test driving a 300D a few days ago and... my God, does that car have the world's strangest gas pedal.

It's hard to explain, but basically, the gas pedal doesn't work like one on normal cars. You can press it halfway down and nothing happens. Then at 3/4 throttle, the car sort of starts to move and if you give it just a little more than 3/4 throttle the car just takes off!

It's so flipburgers ridiculous. The look on my face was like Takumi when he felt his new clutch pedal. I thought something was wrong with the car, but the owner invited me to test-drive his other 300D and I got the same result!

From what I'm hearing, this is typical of these cars... but... why? What makes them so funky and nonlinear?

They're also both very rough running engines, why is that? The owner said that is also quite normal of these 5-cylinder oddballs.

It's normal for diesels, its not made for throttle response and acceleration. It is made for torque and fuel economy.
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Posted: Mar 6 2013, 01:29 PM


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I've been thinking of reanimating the corpse of my dad's first car here in the states- 500TD Wagon and turning it into my VIP cruiser/heavy carrier. Can't have enough ships in the dreaded Imperial starfleet. Has anyone else worked on these cars here?
Nomake Wan
Posted: Mar 6 2013, 08:50 PM


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Reanimating corpses...like reviving this thread, for instance? tongue.gif
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s12drifter
Posted: Mar 7 2013, 05:44 AM


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throw in a dodge cummins 4BT biggrin.gif

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Posted: Mar 7 2013, 07:21 AM


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Hail the all-mighty OM606 with 8mm Mynš-pump, raw power from mechanical M-serie pump, no electric junk. awesome.gif
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Shirogane
Posted: Mar 8 2013, 09:52 AM


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QUOTE (s12drifter @ Yesterday, 6:44 AM)
throw in a dodge cummins 4BT biggrin.gif

Sure, if you were simple minded. derp.gif
Rudy
  Posted: Mar 8 2013, 07:14 PM


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