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Oil Cooler Too Eager, Faulty Thermostat Or Incorrect Temp Sensor Location?

V28VX37

By V28VX37,
in Engines & Forced Induction

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V28VX37

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Got new pre-assembled Speedflow hoses going in this weekend, great service from MSCN Moorabbin. Hopefully those will finally fix the leak.

Also found this good writeup on diagnosing AN fitting leaks in case anyone else is looking: http://www.vsetrack.com/track_reports/2010/an_fittings/an_seals.htm

...

Here are a series of schematics of the mating surfaces. It is entirely possible that one may have forgotten to clean the surfaces or over-tighten the fittings. Both of which can cause the fittings to leak. The leak may be just a few drops of fluid but still in reality they should not leak at all.

an%20seals.jpg

Source of Leakage.
Now to determine if the source of the leak is because of the irregular mating surface or a frayed/britter hose, you can check the diagram below. If it leaks from the circumference where the red arrow is pointing, then the mating surface is the culprit. If it leaks from the blue arrow area, then remove the hose, and reseat with a new hose.
leak_source.jpg
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V28VX37
V28VX37

Got the car back today, oil temp sensor is now in the AN10 fitting off the hot outlet of the Mocal sandwich plate and all the moving parts of the plate have been replaced with the service kit. Prick o

Ben C34
Ben C34

There are people who know that information without having to use Google I would consider the post relevant to this thread.

dan.1337
dan.1337

I have a Greddy/GREX sandwich plate and have the oil temp and pressure sensors stuck in there. It might be easiest (and best) to sell your sandwich plate and invest in one with pre-tapped sensor hole

V28VX37 Veteran

V28VX37

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Got new pre-assembled Speedflow hoses going in this weekend, great service from MSCN Moorabbin. Hopefully those will finally fix the leak.

...

Haha that would have been way too easy, the curse continues.

I had all my gear set up for the job until I realised that the new Speedflow fittings require a 1" imperial spanner, doh.

You need crows feet because of the location, which are impossible to get any over the weekend. I then decided to try adding some metal padding to a 27mm crowfoot to make it into a 1" one, that worked pretty well.

Anyway I then drop the oil, disconnect the first hose fitting, only to find that the guys have used stacks of sealing paste, also on the flange :/ No way I can get it cleaned well enough for a proper seal.

Back to the workshop it goes...

...

My previous most hated car job was removing metal sleeved bushings but it's now facing some very stiff competition from the oil cooler.

  • 2 weeks later...
V28VX37 Veteran

V28VX37

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Ok after a couple of trips (!!) to the shop it should be all sorted now. The new Speedflow lines are good with the 45-degree elbow fittings they now clear the alternator properly.

In case anyone reading this thread is considering the Driftworks oil cooler kit, the Mocal sandwich plate, or buying a kit second hand – don't do it.

Here's why: http://www.sau.com.au/forums/topic/462142-r34-gtt-oil-cooler-installation/?p=7720004

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