External Oil Cooler

[TommyDSM]

I cracked my Oil housing, and now Need a new one. So I decieded to get a External oil Cooler housing. What size lines should I go with? -6 or -8? Also What size is the stock Oil Cooler in the '90's? I want to get one about the same size... right now i'm looking at -6 lines... if that is too small please let me know. Thanx

 

[Hammer_Gaidin]

Might I ask why you're switching?? Especially if you drive you're car in the winter, your oil might get too cold?? Just something to think about.

 

[snox135]

Size -6 lines will work fine. But if you buy an external cooler make sure you also buy a thermostat for it. This will make sure you maintain proper oil temp and will also help your oil come up to temp quicker.

 

[Eagle 5]

Ive heard/ read that some think -8 is even too small. I run -10 lines for my external and its 8 x 11 x 1.5. My cooler sits on the drivers side in the left most opening of the front bumper, right in front of the washer fluid reservoir.

Either way you will need the metric to pipe thread adapters for the external cooler. I forget the exact size for them but I believe they are M16 x 1.5. I have it written down somewhere so I can look it up and let you know for sure. May only be M12 x 1.5.

 

[TommyDSM]

Might I ask why you're switching?? Especially if you drive you're car in the winter, your oil might get too cold?? Just something to think about.

Well I don't drive my car in the winter. And my engine bay gets pretty hot... So I want to try to keep my engine cool, and turbo cool...

 

[snox135]

I've never had any problems with oil temps and I have -6 lines.

 

[TommyDSM]

Ive heard/ read that some think -8 is even too small. I run -10 lines for my external and its 8 x 11 x 1.5. My cooler sits on the drivers side in the left most opening of the front bumper, right in front of the washer fluid reservoir.

Either way you will need the metric to pipe thread adapters for the external cooler. I forget the exact size for them but I believe they are M16 x 1.5. I have it written down somewhere so I can look it up and let you know for sure. May only be M12 x 1.5.

Ive read that don't go any bigger then -8 else pressure will drop... And -6 is about the same size as stock lines... But I ended up going with a BM Cooler 8x11x1.5. I got -6AN to M16x1.5 for the Oil Housing and -6AN to 1/2" for the Cooler.

 

[TommyDSM]

Size -6 lines will work fine. But if you buy an external cooler make sure you also buy a thermostat for it. This will make sure you maintain proper oil temp and will also help your oil come up to temp quicker.

How would the thermostat work? And does it bolt up to stock housing?

 

[Eagle 5]

Ive read that don't go any bigger then -8 else pressure will drop... And -6 is about the same size as stock lines... But I ended up going with a BM Cooler 8x11x1.5. I got -6AN to M16x1.5 for the Oil Housing and -6AN to 1/2" for the Cooler.

I did a search on here back when i was deciding between what sizes to get and someone did a write up on it and had some formulas and sucha botu flow rates etc. as far as pressure goes, i have the b shafts removed so oil pressure would go up there, so if -10 makes it go down, then its probably back to stock. oil pressure seems fine though as far as I can tell

 

[hellotbone]

I have an external oil cooler on my 2G with 6bolt swap. The banjo's are 16mm which is a weird and expensive banjo because they are not common. I have a 9/16 ID lines and use push barb fittings to 1/2 NPT thats what my oil cooler is. I got it here for 90 bucks canadian brand new fits on the splash guard for the driver side front wheel.

 

[hellotbone]

How would the thermostat work? And does it bolt up to stock housing?

No thermostat needed stock doesn't have one. Its unnecessary and a waste of money. Bascially if you are warming your car up no air is moving though the cooler anyways letting the oil warm up. The cooler will disipate heat but think of you radiator sitting there with your car running with no fan on how long will it be before you overheat? Same as the oil cooler as long as your not moving your not dissipating much heat so your oil warms up. Start to drive around and the airflow cools it down.

 

[sweet97]

I've got a '90 filter housing and cooler ordered from DSmotorsport.com Since I feed my turbo from one of the hex plugs on the housing am I going to have to make a custom fitting to feed the turbo and also circulate the oil through the cooler? Mark

 

[TommyDSM]

I've got a '90 filter housing and cooler ordered from DSmotorsport.com Since I feed my turbo from one of the hex plugs on the housing am I going to have to make a custom fitting to feed the turbo and also circulate the oil through the cooler? Mark

I also ordered the housing from DSMotorsport.com but they didn't have it or the External Oil Cooler in Stock... So I purchased from my Dealer, and got it cheaper, and next dayed cheaper then getting it from DSMotorsport.com.... But No don't have to make a custom fitting... There is a fitting that you can use to bolt in place of the hex plug... I think it goes from what ever size the hex plug is to -4 male... I just used the one that was already on my oil housing when I Purchased my car... Works Well, No Leaks...

 

[hellotbone]

No the oil cooler housing has to holes for the oil cooler banjoes for the hoses

 

[Eagle 5]

No the oil cooler housing has to holes for the oil cooler banjoes for the hoses

they are 16mm x 1.5 i believe. then you can use a NPT to -AN adapter, then run AN fittings and braided line, thats what I did. Used -10 AN lines which is 10/16 or 5/8' thick. -8 is half inch thick. no oil pressure problems. cooler gets quite warm i might add.

 

[TommyDSM]

No the oil cooler housing has to holes for the oil cooler banjoes for the hoses

I believe he was asking about the TURBO FEED, not the Cooler Feed... And you would have to un screw one the bottom Hex Plug out and use a fitting to connect to your turbo feed...

This might help
http://www.roadraceengineering.com/instructions/oillineinstall.htm

 

[TommyDSM]

they are 16mm x 1.5 i believe. then you can use a NPT to -AN adapter, then run AN fittings and braided line, thats what I did. Used -10 AN lines which is 10/16 or 5/8' thick. -8 is half inch thick. no oil pressure problems. cooler gets quite warm i might add.

Yeah, My Cooler gets pretty hot... I'm thinking of getting a fan and placing it infront of the cooler... and having a thermal stat which turns it on and off between a certain temp... because its pretty hot to the touch...

 

[Jason84]

-8 is the size you want for oil coolers...

 

[TommyDSM]

Can you guys post your external oil cooler setup?

 

[sweet97]

Spoke to brent at DSM. The oil feed bolts to the front plug and the oil cooler to the side plugs. Imagine how hot the oil got with the coolant cooling it !

 

[snox135]

No thermostat needed stock doesn't have one. Its unnecessary and a waste of money. Bascially if you are warming your car up no air is moving though the cooler anyways letting the oil warm up. The cooler will disipate heat but think of you radiator sitting there with your car running with no fan on how long will it be before you overheat? Same as the oil cooler as long as your not moving your not dissipating much heat so your oil warms up. Start to drive around and the airflow cools it down.

The reason your stock oil cooler doesn't have a thermostat is because it uses engine coolant and not ambient air to cool the oil. You oil temp will never be cooler than your engine coolant. 180*F is a good temperature to run your oil at. Without an external cooler you can get your oil colder that it should be. You referr to the radiator,your stock radiator does have a thermostat. Using your logic we don't need a thermostat in your engine coolant system either. Because the fans will draw air thru it while sitting still and while moving you will have enough air to cool the motor.

I have my thermostat mounted on the same bracket as my oil cooler. It just hook ups to your oil lines. Plus there is a bypass line for when the thermostat closed. I also have a fan and duct work hook up to my oil cooler.

 

[Wing0tj]

what about using the stock air to oil, oil cooler?? there is no thermostat on that, I got mine off of a 90 laser and there was defiantly no thermostat on it.

 

[sweet97]

You'll be fine. Much better off then what your '92 ame with like my '93. A fan and thermostat would help if you did a LOT of idling in hot city traffic. I am going toget a B&M oil cooler and am not considering a fan and my turbo is strictly oil cooled, no water. Highway driving. Mark

 

[terefic181]

This may help you out a little.

http://www.dsmtuners.com/forums/showthread.php?t=180309

And here's my setup from the Tech Section.

http://www.dsmtuners.com/forums/showthread.php?t=157062

Hope it helps you out.



Tom

 

[hellotbone]

The reason your stock oil cooler doesn't have a thermostat is because it uses engine coolant and not ambient air to cool the oil. You oil temp will never be cooler than your engine coolant. 180*F is a good temperature to run your oil at. Without an external cooler you can get your oil colder that it should be. You referr to the radiator,your stock radiator does have a thermostat. Using your logic we don't need a thermostat in your engine coolant system either. Because the fans will draw air thru it while sitting still and while moving you will have enough air to cool the motor.

I have my thermostat mounted on the same bracket as my oil cooler. It just hook ups to your oil lines. Plus there is a bypass line for when the thermostat closed. I also have a fan and duct work hook up to my oil cooler.

If you feel you Really really need a tstat go for it, I personally do not run one have over 8000 km on my car with the swap with ZERO problems running an external oil cooler, IMO there is no need for one and talking to a few engine builders around see no problem with the setup I run either.

So to those reading this take any info you get with a grain of salt and do some rearch spend extra $$$ on parts you don't need if you wish.