N/A Non Turbo 606 Swap into early 250TD W124
N/A Non Turbo 606 Swap into early 250TD W124
Its a base wagon, 5 speed, black cloth, wind up windows, manual seats, no a/c etc.
I have a '95 606 parts car, and I'd like to install the 606 into the wagon.
The clutch feels like its on its last legs, so it will be a good time to replace it. Trans is the 717.411.
Now the big question, can I run the 606 with the 602 harness? The 250TD has no EGR, and the connectors on the IP's are identical.
I really don't want to have to buy an updated harness to make the 606 run (the parts car has a nasty original harness).
I was going to run an early 603 glow plug harness and solder the 606 glow plug connectors on it.
david hendy
07-26-2015, 11:55 AM #1I have an '88 250TD, imported it from Europe a few years ago.
Its a base wagon, 5 speed, black cloth, wind up windows, manual seats, no a/c etc.
I have a '95 606 parts car, and I'd like to install the 606 into the wagon.
The clutch feels like its on its last legs, so it will be a good time to replace it. Trans is the 717.411.
Now the big question, can I run the 606 with the 602 harness? The 250TD has no EGR, and the connectors on the IP's are identical.
I really don't want to have to buy an updated harness to make the 606 run (the parts car has a nasty original harness).
I was going to run an early 603 glow plug harness and solder the 606 glow plug connectors on it.
I don't think you can use the 602 harness it's missing one cilynder the best way is to solder the 603 harness with 606 glow plug connectors. I'm using the 717411 in my 87 300TD with out any issues for the last 5 years. I would like to see pictures of your 250TD maybe you can post pictures
The early 60X engines have two harnesses, the engine harness with the temp sensor, IP control, oil pressure, glow plug body harness etc. Then there is the glow plug relay & its harness. So if I wanted to install a 603 NA engine in the 250TD, all I would need to do is switch from an OM602 to OM603 glow plug relay and from a 5 pin gp harness to a 6 pin gp harness. Everything else is the same.
On the 606 there is only 1 harness. All the engine functions and the glow plug relay control is on that one harness. So, the question is, if I install a 606 in my car, using the 602 engine harness and a 603 glow plug harness with 606 connectors, will the engine idle correctly? Does the NA 606 have any sort of resonance flap control? Where the air flow is controlled based on engine rpm?
I have attached a pic of a NA 606 intake manifold. What is the valve in the center of the pic with its own vac solenoid? What does it do?
David Hendy
'97 E60RS
'97 GMC Sub' 6.5 diesel
'95 E300D X3 (!!)
'89 300TE
'88 250TD
'84 Land R0ver 109
david hendy
07-26-2015, 04:34 PM #4Thanks for the responses. But I think you misunderstand.
The early 60X engines have two harnesses, the engine harness with the temp sensor, IP control, oil pressure, glow plug body harness etc. Then there is the glow plug relay & its harness. So if I wanted to install a 603 NA engine in the 250TD, all I would need to do is switch from an OM602 to OM603 glow plug relay and from a 5 pin gp harness to a 6 pin gp harness. Everything else is the same.
On the 606 there is only 1 harness. All the engine functions and the glow plug relay control is on that one harness. So, the question is, if I install a 606 in my car, using the 602 engine harness and a 603 glow plug harness with 606 connectors, will the engine idle correctly? Does the NA 606 have any sort of resonance flap control? Where the air flow is controlled based on engine rpm?
I have attached a pic of a NA 606 intake manifold. What is the valve in the center of the pic with its own vac solenoid? What does it do?
David Hendy
'97 E60RS
'97 GMC Sub' 6.5 diesel
'95 E300D X3 (!!)
'89 300TE
'88 250TD
'84 Land R0ver 109
doesn't the n/a 606 have a manual pump? if it does then i think using the 603 gp harness and the stock 602 everywere else should be fine. if im not mistaken the manual pumps dont need power at all, or just power to the shut off silinoid and it'll run like normal. pretty sure mercedes used vacuum shut-off for the manual pumps though. my 616 is like that but your stuff a lot newer.
the IP in the 606N/A is mechanical , no power is needed. if the donor car has cruise control or rack position sensor for EGR purposes / i belive california rules, nothing electrical is needed for the pump. if u want EGR system to operate the 602 does the job. for the glow plug u can install a 6th wire in the glow plug relay from a 605/ 602 harness. atention should be payed to the partial heating!!! in a 605/606 harness the partial heating is conected til a certain resistance is feeding back, and then the circuitry kills the power. that is not needed for idle. that is a thing wich smoths the idle and smoke when fire from cold. on the other hand there are cars with that circuitry conected to the electronic idle increase, and some cars have pneumatic idle increase.
in the end , its all the same , after glowing for start the glow plugs stay a wile in 6/8 volt partial heating til the engine is hot.
same for idle incresse, after start from cold some cars have electronic idle incresse til hot , others have pneumatic.
regards
FD,
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the stuff in the manifold is related to EGR purposes and inlet resonance purposes. if u turbo the engine that will not be of concern. using it as a N/A u will have resonance issues if not correctly operational.
the IP in the 606N/A is mechanical , no power is needed. if the donor car has cruise control or rack position sensor for EGR purposes / i belive california rules, nothing electrical is needed for the pump. if u want EGR system to operate the 602 does the job. for the glow plug u can install a 6th wire in the glow plug relay from a 605/ 602 harness. atention should be payed to the partial heating!!! in a 605/606 harness the partial heating is conected til a certain resistance is feeding back, and then the circuitry kills the power. that is not needed for idle. that is a thing wich smoths the idle and smoke when fire from cold. on the other hand there are cars with that circuitry conected to the electronic idle increase, and some cars have pneumatic idle increase.
in the end , its all the same , after glowing for start the glow plugs stay a wile in 6/8 volt partial heating til the engine is hot.
same for idle incresse, after start from cold some cars have electronic idle incresse til hot , others have pneumatic.
regards
FD,
Powered by tractor fuel
The sensors are all Bosh and like for like, sourcing a 6-cylinder glow plug relay for your car would make it plug and play but adding the 6th wire is fine.
Most people here myself included remove all EGR functionality & hardware.
I fitted a 606.962 into my W202 C250TD (605.960) and have not yet fitted the 6th glow plug wire, it runs rough for a few seconds after cold start that is all, I must get round to doing that..
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
Idle control should be entirely controlled by the IP?
The sensors are all Bosh and like for like, sourcing a 6-cylinder glow plug relay for your car would make it plug and play but adding the 6th wire is fine.
Most people here myself included remove all EGR functionality & hardware.
I fitted a 606.962 into my W202 C250TD (605.960) and have not yet fitted the 6th glow plug wire, it runs rough for a few seconds after cold start that is all, I must get round to doing that..
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
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