Thermostat Housing Delete on 2.0L/2.2L/2.4L/L61/LE5/LSJ/LNF

HOBGOBLIN

Member
So I read this thread last night after I had the same thought in the shop looking at my thermostat housing. The looped hose is kind of cheap looking. So I was interested in the product you found. The thing is operating temps are designed for a reason. Expansion of metal, clearances , even oil thickness at a certain temp is all designed into the engine. If you were building a drag goblin I would say sure go for it, most drag cars fill the cooling passages any way. So I don’t agree with eliminating the thermostat. The heater core Pipes are press fit into the housing and have a lock tight like sealant on them. I am thinking applying some heat and twisting the pipes will break them free allowing then to tap the holes and install plugs. I will attempt this in the upcoming weeks.
 

Desert Sasqwatch

Well-Known Member
So I have some questions along the lines of HobGoblin's line of thinking. Since there is much engineering that goes into the engine operation, what, if anything, is everyone doing with the stock oil cooler (TC only?)? Is it being by passed? Or removed? If it is not utilized, does this mess with the thermal engineering of the engine? Will the engine oil temps be running higher than designed if the cooler is not used?

I have been thinking about this for some time and, living in the desert, am thinking the engine oil cooler should be routed through the heater core loop, similar to what was found in the stock set up - using the heater loop to 'cool' the oil heat exchanger to nominal operating temperature (200-210F). The addition of a small heat exchanger in this loop, to remove some of the heat on the return into the engine coolant system, is contemplated, but this would likely take some experimentation to determine the optimum size to not overcool the loop.

Any thoughts or comments?
 

Briann1177

Well-Known Member
So I read this thread last night after I had the same thought in the shop looking at my thermostat housing. The looped hose is kind of cheap looking. So I was interested in the product you found. The thing is operating temps are designed for a reason. Expansion of metal, clearances , even oil thickness at a certain temp is all designed into the engine. If you were building a drag goblin I would say sure go for it, most drag cars fill the cooling passages any way. So I don’t agree with eliminating the thermostat. The heater core Pipes are press fit into the housing and have a lock tight like sealant on them. I am thinking applying some heat and twisting the pipes will break them free allowing then to tap the holes and install plugs. I will attempt this in the upcoming weeks.
http://dfkitcar.com/forum/index.php?threads/base-model-turbo-install.219/page-3#post-6038
 

Briann1177

Well-Known Member
Dumb question and I apologize in advance if my thinking is incorrect, but why would one want to insert the TC oil cooler into the heater loop? Wouldn't you just be running heated water through the oil cooler? If I understand the flow correctly, I think the water that goes through the oil cooler is after it's already been cooled by the radiator. Using the hot side doesn't make sense to me.
 

Desert Sasqwatch

Well-Known Member
Brian, the short explanation: use the heater loop as an auxiliary cooler for the engine oil cooler - that I have not seen any information on within the forum about anyone cooling the engine oil with it...and not a dumb question and no need to apologize. :)

The plan is to run the outlet of the heater loop through a heat exchanger/radiator to bring the 200 deg coolant down closer to ambient, run it through the engine oil cooler and then back through the heater loop into the engine. This should not be a problem as the engine would normally see a 'hot' return when the heater is not being used in the car, like during the summer - the heater core is not dissipating any heat into the car. Cooling the engine oil in a TC is much more important than in a SC or NA engine, since the turbo adds significant temperature to the engine oil, especially in the summer and living in the desert, and is the main reason the oil cooler is used on the LNF engines.

I put this out there to see if anyone had comment (thanks) or an explanation of how they are utilizing the engine oil cooler on the TC. As it stands now, I will have 4 radiators on my car: the DF engine radiator, X2 air-to-water system heat exchangers for my intercooler, and the radiator for the engine oil cooler I explained above. I'm running out of room to install all of these, plus the electrical load for the fans. :oops:
 
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HOBGOBLIN

Member
Brian, the short explanation: use the heater loop as an auxiliary cooler for the engine oil cooler - that I have not seen any information on within the forum about anyone cooling the engine oil with it...and not a dumb question and no need to apologize. :)

The plan is to run the outlet of the heater loop through a heat exchanger/radiator to bring the 200 deg coolant down closer to ambient, run it through the engine oil cooler and then back through the heater loop into the engine. This should not be a problem as the engine would normally see a 'hot' return when the heater is not being used in the car, like during the summer - the heater core is not dissipating any heat into the car. Cooling the engine oil in a TC is much more important than in a SC or NA engine, since the turbo adds significant temperature to the engine oil, especially in the summer and living in the desert, and is the main reason the oil cooler is used on the LNF engines.

I put this out there to see if anyone had comment (thanks) or an explanation of how they are utilizing the engine oil cooler on the TC. As it stands now, I will have 4 radiators on my car: the DF engine radiator, X2 air-to-water system heat exchangers for my intercooler, and the radiator for the engine oil cooler I explained above. I'm running out of room to install all of these, plus the electrical load for the fans. :oops:
many pictures of your air to water setups for the turbo? Converting from S/C to T/C.
 

JSATX

Well-Known Member
Apologies if I don’t understand what you’re doing, but you can not block off those heater core hoses and expect things to work correctly. There’s dozens of threads on the topic by now.
 

OptimizePrime

Active Member
Apologies if I don’t understand what you’re doing, but you can not block off those heater core hoses and expect things to work correctly. There’s dozens of threads on the topic by now.
On TC / SC builds it gets looped - not that it doesn't impact anything but blocking it doesn't appear to hurt based on other pics and the block off plate mentioned by OP

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