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You should have an adapter that goes onto the stock oil filter mount. Two lines come off it. If you have a remote oil filter, one line goes to it ( the short one), the longest goes to the cooler, and an inbetween goes from filter to the cooler.

If you dont have the remote oil filter, just adapter plate and two lines to the cooler.

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on my trust kit i just bought. you have four lines.

two from the adapter to the remote oil filter, two from the remote oil filter to the oil cooler. this is because the remote oil filter housing has thermostats inside.

if your doesnt have thermostats inside. (not sure how to check) then earls make a oil thermostat. pm if you want the part number.

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  • 7 months later...

Bringing up an old thread here, but when fitting a large oil cooler, do you need to increase the oil pressure to make it through this long extension of oil flow? will be at least an extra litre of oil going through the system too!

post some pics of the cooler for you guys, got a real bargain on it too!

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i had no idea that the rotaries had a thermostat on the oil coolers that did that! is there any way to hook up an rx-7 cooler with the thermostat as being functional? im over in the states and climates vary alot so this wouldnt be bad.

EDIT: sidenote; whats the thread pattern and-length on an rb25det oil filter? i want to put the remote filter w/ oil cooler on but i need to know the pitch etc. to find a compatible one over here.

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cheers for the info steve, do they have a shop front in silverwater?

also a couple more questions.

Do those of of you that run oil collers disconnect them and drain the oil out with oil changes?

Also has anyone noticed oil pressure drop after installing them?

Does anyone recommend having a thermostat in the setup?

thanks in advance!

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1. Why do halhf a job

2.U would if u dont fill em up to compensate.

(anyone know how to do this, its got me stumped)

3.yes

yeah with the second question - oil pressure - i was assuming that it would be full including the oil cooler and lines!

still looking for info on how these thermostats work so this will obviously affect how the cooler is set up!

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yeah with the second question - oil pressure - i was assuming that it would be full including the oil cooler and lines!

still looking for info on how these thermostats work so this will obviously affect how the cooler is set up!

it is importand to have a thermostat in the setup as the cooler and lines usually takes an extra litre or so, this added capacity combined with freezing air over cooler can mean especially in winter that the oil either never comes up to temp or runs to cold for too long. the t/stat is cheap and in just run inline if you use the earls or motospecs item part no. (0555-331758) it is depending on supplier $113. be aware to never mount cooler with inlets/outlets facing down, and to use a filter with anti drain back valves in them if you intend to remote mount it. most filters do have this valve but some cheaper brands dont.

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thermostat is in sandwich block between oil filter and block. If engine oil temp is cold, oil bypasses lines and just circulates the filter, going back into the engine.

Same way thermostat works for cooling system. Now the big question is, how do u fill oil cooler system if a) oil is cold (thermostat is shut obviously), B) how do you know how much to put in?

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in line thermostat is an open valve that links 4 connections (two on each side with a thermostat that blocks off the middle when hot) - and is open when cold. this allows the system to remain pressurised at all times, so no chance of oil surge. Its a bit hard to describe without pictures and I dont have any.

As the oil gets hot the thermostat shuts which forces the oil to travel via the cooler.

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Hi guys, I have never used a thermostat on an oil cooler on any car anywhere in Australia.

Mine hasn't got a thermostat either, the oil gets up to temp quick enough

Mine is mounted behing my intercooler, between my radiator, and it seems to do a good job

Quick question, what is optimum temp for synthetic oil?

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