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Old 08-29-2005, 11:11 AM
TonyFromWestOz's Avatar
"The Wizard of Oz"
 
Join Date: Jan 2004
Location: Perth, Western Australia
Posts: 834
300D conversion - coolant source

I recieved an email from a forum member:

This is the message:

I am trying to figure out what I need to convert, I think my 1983 300sd has a different circulation pump for the heater core, so I was wondering where did you tap your heat from?

Thanks,
Charles

I will answer any emailed question on the forum, to build on the infobase here and to enable others to contribute to, or learn from, the resultant discussion.
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Tony from West Oz.
Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine.
Josephine '82 300D 390kkm White/Palamino int.
Elizabeth '81 280E, sporting a '79 300D engine.
Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior


Various parts cars including 280E, 230C & 300D in various states of disassembly.
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Old 08-29-2005, 11:18 AM
TonyFromWestOz's Avatar
"The Wizard of Oz"
 
Join Date: Jan 2004
Location: Perth, Western Australia
Posts: 834
Charles,
In my 300D, I took hot coolant from the heater hose connection to the head, near the oil filter housing, and returned the coolant to the heater hose adjacent to the water pump.

My car does not have the auxillary water pump, but I believe that the aux water pump is controlled by the ACC (Automatic Climate Control IIIRC - I don't have one ) and so may not allow coolant to flow to your fuel heater in some circumstances.
The source of coolant I use is not affected by anything other than the correct operation of the engine cooling system. It is effectively in parallel with the other connections to these points.
NOTE: when installing the Tee in the coolant hose near the oil filter, ensure that service access for the filter is not compromised.
I did post photos of the connections in the past, but do not recall when and I do not know how to search for particular photos.
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Old 08-29-2005, 11:43 AM
jaxtrx's Avatar
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Join Date: Aug 2005
Location: Brecksville,OH
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Coolant routing 300sd

thx, I'm on the right track, just have to figure out how to do this without ruining the stock hose & allowing access to the oil filter


Quote:
Originally Posted by TonyFromWestOz
Charles,
In my 300D, I took hot coolant from the heater hose connection to the head, near the oil filter housing, and returned the coolant to the heater hose adjacent to the water pump.

My car does not have the auxillary water pump, but I believe that the aux water pump is controlled by the ACC (Automatic Climate Control IIIRC - I don't have one ) and so may not allow coolant to flow to your fuel heater in some circumstances.
The source of coolant I use is not affected by anything other than the correct operation of the engine cooling system. It is effectively in parallel with the other connections to these points.
NOTE: when installing the Tee in the coolant hose near the oil filter, ensure that service access for the filter is not compromised.
I did post photos of the connections in the past, but do not recall when and I do not know how to search for particular photos.
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