oil cooler relocation.

[jamesmwalker79]

alright guys heres the skinny. i bought a godspeed intercooler and got it installed now im just having an issue relocating the stock oil cooler. if anyone has any suggestions or experience with this pls let me know btw its on a 89 turbo. and it cant go in the original placement cause the intercooler is alot bigger then stock. it was supposed to be a direct bolt on. hahaha. ya right.

 

[TurboStreetCar]

if its set up the way the stock cooler is set up, throw it anywhere itll fit, doesn't do much anyway. you could even remove it if you want.

 

[Kevin]

what is your issure with relocating the stock cooler?

 

[Green7mgte]

shoot relocate it to the front of the inter cooler for all that. or under your headlight. anywhere you can mount a bracket to hold it

 

[jamesmwalker79]

thanks fellas i ended up relocating under the head light thanks guys.

 

[Amtrack]

if its set up the way the stock cooler is set up, throw it anywhere itll fit, doesn't do much anyway. you could even remove it if you want.

Of course you can´t remove it completely :nono:

If your oil filter arm works fine as Toyota thought it to work, and if your oil cooler is clean and not stuck with oil mud -> you´ll be fine with your oil temps.

Trust me, if all that is the case, you can drive all day long 240km/h.

But remember: that only counts for stock power!

So for long time highway driving over here with BPU -> you will need a slightly bigger oil cooler.

The most german BPU Supras are using a 19row oil cooler.

 

[Green7mgte]

while you were under your headlight. should made a cold air box =)_

 

[TurboStreetCar]

Of course you can´t remove it completely :nono:

If your oil filter arm works fine as Toyota thought it to work, and if your oil cooler is clean and not stuck with oil mud -> you´ll be fine with your oil temps.

Trust me, if all that is the case, you can drive all day long 240km/h.

But remember: that only counts for stock power!

So for long time highway driving over here with BPU -> you will need a slightly bigger oil cooler.

The most german BPU Supras are using a 19row oil cooler.

Well considering the size of the cooler and the way the cooler circuit operates it doesn't have the ability to cool very much. It also returns the oil directly to the pan rather then to the engine. Its borderline useless.

Full flow cooler circuit with a thermostat should be adapted to any engine that is pushed, stock or modified.

 

[92nsx]

If you want to get by on a budget you can do what I first did, before I upgraded my system.

I drilled a hole in the center of the mounting flange and hung it in front of the hood lock. Then just pick your self up some 3/8" fuel line (like .75 cents a foot) to reach the new mounting location.

This is the only pic I can find of my old setup.

 

[Moy]

I have my behind the grill that sits between the bumper and header panel. I still need to buy lines though hah

 

[Amtrack]

Well considering the size of the cooler and the way the cooler circuit operates it doesn't have the ability to cool very much. It also returns the oil directly to the pan rather then to the engine. Its borderline useless.

Full flow cooler circuit with a thermostat should be adapted to any engine that is pushed, stock or modified.

We are going off topic a little bit but it`s an interesting point to discuss in my opinion.

- the point that the cooled oil goes to the pan doesn`t make a difference if your oil is cool enough. It´s a circuit and it makes no difference if the cooled oil goes directly into the engine or first into the pan and then to the engine

- the size of the cooler is big enough for stock using if everythings works well like the cars left Toyota (if any part of that system is bad, it will effect a lot of your cooling)

- I´m using two 19 row oil coolers in my SP61 Supra and it is well cooled - I decided to use the stock system just with bigger coolers (a bigger single one wouldn`t fit with my intercooler setup)

The reason why I decided to use the stock system is the following -> in idle with warmed up or hot engine your oil pressure is pretty low compared to other cars -> with low oil pressure your head will get a slight problem because of less oil coming to the head -> if you use a oil cooler setup which directs the oil to the cooler, even in idle with low pressure, your head will get real problems as not very much oil will go up there.
That´s the reason why Toyota build it like they did (in my opinion of course, I haven´t asekd them ) to get around that problem.

I hope everyone understands what I mean, pretty hard to describe if you are not a born english speaker

 

[TurboStreetCar]

We are going off topic a little bit but it`s an interesting point to discuss in my opinion.

- the point that the cooled oil goes to the pan doesn`t make a difference if your oil is cool enough. It´s a circuit and it makes no difference if the cooled oil goes directly into the engine or first into the pan and then to the engine

- the size of the cooler is big enough for stock using if everythings works well like the cars left Toyota (if any part of that system is bad, it will effect a lot of your cooling)

- I´m using two 19 row oil coolers in my SP61 Supra and it is well cooled - I decided to use the stock system just with bigger coolers (a bigger single one wouldn`t fit with my intercooler setup)

The reason why I decided to use the stock system is the following -> in idle with warmed up or hot engine your oil pressure is pretty low compared to other cars -> with low oil pressure your head will get a slight problem because of less oil coming to the head -> if you use a oil cooler setup which directs the oil to the cooler, even in idle with low pressure, your head will get real problems as not very much oil will go up there.
That´s the reason why Toyota build it like they did (in my opinion of course, I haven´t asekd them ) to get around that problem.

I hope everyone understands what I mean, pretty hard to describe if you are not a born english speaker

Well as far as a stock vehicle IMO this car would even need an oil cooler just like most other factory cars. The reason the cooler is of acceptable size and design is because anything more is not required.

The factory cooler circuit bleeds oil over 40psi to the cooler. Its designed this way because if the oil pressure is higher then 40psi, other then cold start, the RPM is most likely above the cruising or idle conditions. Those conditions are when the oil is subjected to high levels of heat.

The difference of whether the oil goes to the pan or the motor is the oil acts as a coolant. If the cool oil is sent to the pan its being sent to the same place all the hottest oil in the motor ends up. The result is the oil is then heated again before being sent threw the motor. What good is it to cool the sump? The cooler will never flow/cool enough oil to drop oil pump inlet temperatures by any significant amount.

If the oil was sent to the motor rather then the pan it would be at a cooler temperature flowing over hot parts and able to absorb more heat from those parts keeping them cooler.

A matter of oil pressure is again towards a full flow setup. A spring is not a switch. the reliefs rated pressure is 40psi. It most likely bleeds oil at all times but full flow is at 40 psi.

Since oil is being released from the oiling system it is not making it to the motor. At idle "X" amount of oil is going to flow towards the motor from the pump. If "Y" amount of oil is bled out, your left with only "Z" amount of oil flowing threw the motor.

With a thermostatically controlled full flow system cooler circuit "Y" is zero. "X" and "Z" are the same. The difference in flow is the value of "Y".

Another thing to remember is pressure is resistance to flow. These motors are high volume engines, because pressure is low does not mean flow is low.

This is my Theory behind my decision, It is an interesting topic. Anyone else have input?

 

[Poodles]

We are going off topic a little bit but it`s an interesting point to discuss in my opinion.

- the point that the cooled oil goes to the pan doesn`t make a difference if your oil is cool enough. It´s a circuit and it makes no difference if the cooled oil goes directly into the engine or first into the pan and then to the engine

- the size of the cooler is big enough for stock using if everythings works well like the cars left Toyota (if any part of that system is bad, it will effect a lot of your cooling)

- I´m using two 19 row oil coolers in my SP61 Supra and it is well cooled - I decided to use the stock system just with bigger coolers (a bigger single one wouldn`t fit with my intercooler setup)

The reason why I decided to use the stock system is the following -> in idle with warmed up or hot engine your oil pressure is pretty low compared to other cars -> with low oil pressure your head will get a slight problem because of less oil coming to the head -> if you use a oil cooler setup which directs the oil to the cooler, even in idle with low pressure, your head will get real problems as not very much oil will go up there.
That´s the reason why Toyota build it like they did (in my opinion of course, I haven´t asekd them ) to get around that problem.

I hope everyone understands what I mean, pretty hard to describe if you are not a born english speaker

Completely wrong as a full flow thermostat controlled oil cooling system doesn't bleed pressure off like the stock system does. It will supply MORE flow to the engine, NOT less. The reason the oil cooler was done that way it is on the supra is for one reason and one reason only, cost. Also reliability, but that's cost to the company.

Not to mention during cold startups the high oil pressures open the valve to the cooler prolonging cold start up and causing more engine wear.