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The mkiv Supra Owners Club

Oil Coolers


Robbie

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Hi there.

 

Just got a few questions ...

Im just wondering if anyone knows if any of the supras out there have an engine oil cooler as standard.

I know that UK spec soops have tranny and diff coolers as standard but I dont know if its got some kind of engine oil cooler. The engine on my car has been modded so Im also wondering if the answer's a 'NO' then as I undestand it Greddy do one for around 500 pounds.

This seems a lot to me so if I should get one can I purchase a kit cheaper.

Also can it be fitted easily?

Oh just one more question. DO I NEED ONE AT ALL?

 

Thanks

:)

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Robbie sounds like the car may nearly be done!

I think you should ask Paul whiffin, Terry etc if they have them as they are the other boys with the hi powered toys, although i've never heard of any oil cooler discussions in all my time on the forum, but then we don't know just how far you've gone do we!

 

BTW do you think the car is gonna be ready for the Jap drag day in October?

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Guest Terry S

Yeah I have one. Leon and PW sell kits, or you can just buy a Mocal Sandwich plate, - 10 lines and the cooler of your choice.

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Hello Scooter.

If all goes to plan I will have my engine parts by the end of next week, so Im guessing on it being ready 2 weeks from then. PLEASE, PLEASE, PLEASE, LET THAT BE RIGHT!

 

I really want it to be run in and set up on the dyno by then.

 

 

My biggest problem now is sorting a high stall convertor before the event.

I think Im going to try and get it from Protorque in the U.S. but first I have to buy a used convertor fom one of the salvage Co's and get it sent to them. Then they can send it to me.... Unless anyone knows a faster way of getting one :)

 

Have you sold your white tt yet?:confused:

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Originally posted by Terry S

Yeah I have one. Leon and PW sell kits, or you can just buy a Mocal Sandwich plate, - 10 lines and the cooler of your choice.

 

 

I have one of Leon's kits.

 

Oil removes heat from the engine and turbo's as well as lubricate so too my mind having upgraded to hybrids etc and reduced the airflow to the rad with an FMIC, an oil cooler seemed an obvious purchase.

 

Oil temps always between 90 - 100c regardless of driving style and an extra litre of oil to boot.

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Robbie yep TT is now sold and i'm pootling around in my NA!

 

Sounds like it may be a wise move getting the oil cooler, and on the High stall converter front 'Monkeymark' on here has recently ordered one from the states so might be worth contacting him about this. Hope it all gets up and running soon i look forward to seeing it run.

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Originally posted by Robbie

Hi Gavin

where did u put the oil cooler?

Ive got a uk spec so there is a tranny cooler on the passenger side already?. have u got ant ideas:conf:

 

 

Thanks

 

 

My car is manual so it sits in the passenger side vent.

 

I really don't know for an auto, sorry. However, I'm sure Leon will tell you if you buy one from him :)

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Originally posted by Scooter

Robbie yep TT is now sold and i'm pootling around in my NA!

 

Sounds like it may be a wise move getting the oil cooler, and on the High stall converter front 'Monkeymark' on here has recently ordered one from the states so might be worth contacting him about this. Hope it all gets up and running soon i look forward to seeing it run.

got mine from powerhouse racing $1120 all in should have my standard one as a spare. hoping to get it fiitted this week intime for next mondays drag racing at york. dont know if i can get a tranny cooler intime.

 

should do a list of parts you need for coolers and lines. the big name stuff is well dear.

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Guest Terry S
Originally posted by Robbie

Is the air con rad the thin one wedged next to the water radiator:conf:

 

This probably is a stupid question I KNow:moo:

 

Thanks

 

Yep.

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Does anyone have a pic of the rad with Tranny cooler and Aircon cooler in situ ?

 

Or can you tell me the layout ?

 

I have a UK spec and had to have one of the coolers removed (The one in the passenger side hole in the front bumper) which was the tranny cooler I think but, where the hell is the Aircon cooler...........so many bloody coolers on these UK's

 

 

Thanks

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Originally posted by GavinL

I have one of Leon's kits.

 

Oil removes heat from the engine and turbo's as well as lubricate so too my mind having upgraded to hybrids etc and reduced the airflow to the rad with an FMIC, an oil cooler seemed an obvious purchase.

 

Oil temps always between 90 - 100c regardless of driving style and an extra litre of oil to boot.

 

Oil temps should ALWAYS be over 100c to boil off water that is deposited in the sump as part of the combustion process. That's one of the reasons little old ladies cars are not good buys, they never get the oil hot enough to boil off water deposits. Aim for 120 in fast usage. Modern synthetics are OK to a max of 150 if pushed.

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Originally posted by Chris Wilson

Oil temps should ALWAYS be over 100c to boil off water that is deposited in the sump as part of the combustion process. Aim for 120 in fast usage. Modern synthetics are OK to a max of 150 if pushed.

 

So when a cooler is installed, where is the best place to take the temperature reading, from the sump or from the outlet TO the cooler?

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Guest Terry S
Originally posted by Chris Wilson

Oil temps should ALWAYS be over 100c to boil off water that is deposited in the sump as part of the combustion process. That's one of the reasons little old ladies cars are not good buys, they never get the oil hot enough to boil off water deposits. Aim for 120 in fast usage. Modern synthetics are OK to a max of 150 if pushed.

 

So what temperature does a Mocal thermostat open at?

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Originally posted by Simon

So when a cooler is installed, where is the best place to take the temperature reading, from the sump or from the outlet TO the cooler?

 

 

Sump contents temps need to get over 100c on a decent run. Main oil gallery feed sees LOWER temps than return from splash to the sump, so allow for that if probing the pressure side of the system. Coolers in wet sump cars have to be in the pressure side, which means a holed coller has oil squirting out of it at 60 or so PSI. A race engine may use the return (scavenge) lines on a dry sump set up, so a holed cooler will take a while to evacaute the tank. Road car set ups usually end up with either sump probe or a hose probe. Sump probes are pretty useful and get around the fact that many aftermarket hose probe kits disrupt flow in hoses that are on the small side of marginal to start with.

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Originally posted by Terry S

So what temperature does a Mocal thermostat open at?

 

Dunno, guessing about 90c? Not used one for ages, race engines very rarely use an oil sta, wight, possibility of failure, oil flow disruption, they are warmed up, thrashed unmercifully, cooled down and regulary rebuilt, so they aren't important, the oil cooling is the minimum required to keep temps sane, as big coolers add weight and aero drag. On a road car with a cooler big enough to make track days totally worry free on stinking hot days they will keep oil temps on the road undesirably low, so a `stat is needed.

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Originally posted by Chris Wilson

Sump contents temps need to get over 100c on a decent run. Main oil gallery feed sees LOWER temps than return from splash to the sump, so allow for that if probing the pressure side of the system.

 

Interesting info.

 

My temp probe is fitted on the pressure side so the actual oil temps will be above 100c.

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Originally posted by GavinL

Interesting info.

 

My temp probe is fitted on the pressure side so the actual oil temps will be above 100c.

 

If you force a fluid at pressure through a restriction, then the fluids temps increase, force it through a restriction AND subject it to immense pressures after that restriction, as combustion forces do on the wedge shaped oil film in big and main bearing oil seperations, and temps again increase dramatically. Spray a large percentage of said oil on the underside of pistons seeing maybe 950 or more degrees C on the crown, and on the bore sides and rings, then you can see why the oil fed INTO the main gallery ends up a lot hotter as it drops into the sump. Add agitation from a huge crank spashing in it, oil running around mad hot exhaust valve stems, cam lobe pressures, blah blah..... :eek:

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