STD Tuning Engine om603 fuel thermostat

om603 fuel thermostat

om603 fuel thermostat

 
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Whizbang
TA 0301

51
01-25-2015, 09:05 PM #1
so mine has leaked for awhile and today, it became bad. So i bypassed the thermostat while retaining the heating loop so the fuel is still being heated. How important is retaining the fuel thermostat. What can i expect by not replacing the o-rings and putting it back?
Whizbang
01-25-2015, 09:05 PM #1

so mine has leaked for awhile and today, it became bad. So i bypassed the thermostat while retaining the heating loop so the fuel is still being heated. How important is retaining the fuel thermostat. What can i expect by not replacing the o-rings and putting it back?

barrote
Superturbo

1,627
01-26-2015, 04:19 AM #2
hy there,
i´ve read somewhere dont remember where, the fuel heat exchanger thermostat is set to 24ºC, unless u are in a very cold place u should not need it. after a wille even witout fuel heater all fuel tank will be hot, due to the fact that fuel is running inside IP wich is heated by engine oil. the return line to the tank will cool a bit acting as heat dispenser, heating continously will result in heating all the fuel tank faster and too high since it does not have the desired cooling wich the return line provide.
the main idea behind this setup is to have the fuel at room temp as fast as possible and mantain it.
so fix it and u be fine. Wink

FD,
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barrote
01-26-2015, 04:19 AM #2

hy there,
i´ve read somewhere dont remember where, the fuel heat exchanger thermostat is set to 24ºC, unless u are in a very cold place u should not need it. after a wille even witout fuel heater all fuel tank will be hot, due to the fact that fuel is running inside IP wich is heated by engine oil. the return line to the tank will cool a bit acting as heat dispenser, heating continously will result in heating all the fuel tank faster and too high since it does not have the desired cooling wich the return line provide.
the main idea behind this setup is to have the fuel at room temp as fast as possible and mantain it.
so fix it and u be fine. Wink


FD,
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01-26-2015, 05:41 AM #3
I have always run the fuel line from pre-filter directly to the lift pump without any notable difference... So...

____________________________________

'88 300CD Turbo Coupé - OM603
DiseaselWeasel
01-26-2015, 05:41 AM #3

I have always run the fuel line from pre-filter directly to the lift pump without any notable difference... So...


____________________________________

'88 300CD Turbo Coupé - OM603

raysorenson
Superturbo

1,162
01-26-2015, 09:05 AM #4
I sealed mine and then decided not to use it again. I don't use the heating loop either. No problems even at -17*C.
raysorenson
01-26-2015, 09:05 AM #4

I sealed mine and then decided not to use it again. I don't use the heating loop either. No problems even at -17*C.

Whizbang
TA 0301

51
01-26-2015, 10:51 AM #5
i live in CA. not really the cold capital of the world. So its better to bypass the heating loop than to run through it without the thermostat. If its only set for 24C then, that really isnt much anyway
Whizbang
01-26-2015, 10:51 AM #5

i live in CA. not really the cold capital of the world. So its better to bypass the heating loop than to run through it without the thermostat. If its only set for 24C then, that really isnt much anyway

barrote
Superturbo

1,627
01-26-2015, 11:40 AM #6
helps in cold clima, in stock engines Wink

FD,
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barrote
01-26-2015, 11:40 AM #6

helps in cold clima, in stock engines Wink


FD,
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01-26-2015, 11:43 AM #7
Run the fuel line from tank directly (with pre-filter) to fuel pump and all is good Smile

____________________________________

'88 300CD Turbo Coupé - OM603
DiseaselWeasel
01-26-2015, 11:43 AM #7

Run the fuel line from tank directly (with pre-filter) to fuel pump and all is good Smile


____________________________________

'88 300CD Turbo Coupé - OM603

 
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