Oil cooler questions

[ONCE-NA]

Firstly is it acceptable to use an aftermarket auto trans cooler for cooling the engine oil?

Secondly I have a non oil cooled 3T-GTE, can I run a cooler in line with the turbo oil feed?
or would that cause pressure drop problems for the turbo and not really cool the oil that much as it will be straight away super heated by the turbo?

Or should I drill, tap, and fit barbed fittings to the points where the oil cooled turbo motor has them and run the cooler that way?

[mrshin]

No, and no. Fit a proper oil cooler the proper way.

[Draven]

get a sandwich plate to go under your oil filter (or a relocation kit) and run it that way - there are $300 oil cooler kits floating around e-bay, although I have nfi on availability of sandwich plates for an engine as old as the 3T.... Maybe Jason (Yellowrolla) could point you in the right direction? (he has a tits 3T anyhow, not sure on oil cooling.... but if he doesn't have it, you don't need it)

[ONCE-NA]

The 3t-gte has a sandwìch plate at the filter, thats where the feed for the turbo is and the feed to the cooler on the factory oil cooled motor.
What differences are there between a trans oil cooler and a engine oil cooler?

[Norbie]

Engine oil cooler = high pressure, high volume.

Trans cooler = low pressure, lower volume.

The proper way to install an oil cooler is to use a full-flow cooler with the proper high-pressure fittings, and a sandwich plate under the oil filter with a built-in thermostat. You'll find the 3T uses the same oil filter dimensions as most Toyota engines and heaps of other stuff as well (I'm using a Ford kit on my 18R-G) so you won't have any problems finding suitable hardware.

[thechuckster]

also, an engine needs oil at high pressure in high volumes ... using the wrong in-line cooler will turn your engine into iron feed-stock for a hyundia.

[ed]

also, an engine needs oil at high pressure in high volumes at the right temperature and viscosity ... using the wrong in-line cooler will turn your engine into iron feed-stock for a hyundia.

fixed for you...

[thechuckster]

thankyou ed!

[rxbenny]

i was quoted a permacool oil cooler kit with filter relocator for $225.00 just waiting on the thermostat

[Draven]

where from benny?!
I'm trying to find an oil cooler + remote locator at the moment

[ed]

greg: motorsport connections, seven hills

[rxbenny]

I was quoted by a place in perth called A1 high performance.

but I just quoted the part numbers I wanted and said that rocket industries have em on their site.

Check out

www.rocketindustries.com.au part number pc10195 250hp remote style oil cooler kit.

[Toysrme]

Engine oil cooler = high pressure, high volume.
Trans cooler = low pressure, lower volume.

I guess Australian cars are just different. Here I can't name a Toyota engine that won't be blowing off oil pressure via the oil pump's spring relieve valve by around 90-95psi (If the valve is not malfunctioning). Can't name one that specifies *needing* over 75psi of oil pressure. I also can't name a base A/T line pressure read immediately before the cooler line that falls under 50psi idling. And most of them jump to well in excess of 120psi when stalled.
If a real cooler (Stacked plate or race tube. Stay away from tube & fin.) will handle an A/T. They'll easily handle the engine supply.

AFA How to do it. I would hook it inline with a relocated oil filter, or get a thermostat bypass from the oil filter.

Like Norbie said. There's pretty much just one primary Toyota oil filter pattern & that is shared with alot of Fords here.

[Norbie]

I was under the impression that transmission coolers were on the low-pressure side of the pump, and thus never see full line pressure?

[thechuckster]

hot auto-trans fluid has similar viscosity to water - flows quite well thru small restrictions in trans coolers.

engine oil is similar to warmed-honey - needs large holes to flow thru (and not induce pressure drop) - last thing you want is low flow, low-pressure oil in a hot, race-engaged engine.

the differences in coolers is the ID of the piping - auto-trans coolers are tiny, full-flow engine coolers are big.

Trans coolers might hold high pressure, but they flow poorly in comparison to a proper engine cooler.

note: 7mge, 1gue, (others?) etc have low-flow oil-coolers - they bleed off oil, cool it then dump it to the sump - these dont count as full-flow coolers.


note2: rather than a remote cooler, why not use a coolant-controlled donut cooler as found under 1ggte and other turbo engines?

OIl gets up to pressure quicker and no pressure drop across 1 metre of piping - down side is that oil temps are linked to coolant temps.