V28VX37

Have you tried Jesse Streeter? He's been good at tracking down random parts for me.

Thanks Chris, I did end up getting one from the wreckers, was dear though. Yet to chuck it in.

Awesome thanks guys, really helpful. The EGT sensor is in the dump, just in front of the O2 sensor, so will read less than before the turbo.

Finally got organised and installed the gauges, ended up putting them in front of the instrument cluster, see below. Exhaust, water and oil temp in the triple gauge pod, oil pressure and boost in front of the steering wheel. It's a bit of a Christmas tree now but oh well. What would be the normal operating range for exhaust temp, and where should I set the warning level? Same for oil pressure, from memory my OEM gauge used to read somewhere around 4 but it's been disconnected for a little while.. Five Defi gauges in R34 GTT Also since I couldn't find this anywhere online: Getting cables through firewall grommet on driver's side in R34 GTT (remove wheel and rear guard liner to access)

NT01 is the same compound as the R888. The new R888R is meant to be fully road legal, at least in Europe, but whether the GG compound is the same as the R888 GG I'm not sure.

But $2000 for 30min is only about $65/minute?

The snow shot is awesome, we don't see a lot of that stuff in Oz

I have exactly the same weather seal on my airbox. The only issue is that because of the shape it tends to come off at the notchy bit sometimes. Doesn't matter normally but not ideal when it gets sucked into the snorkel at the track...

Got these from RHDJapan so no longer looking thanks

+100 for everything above, steel sleeved OEM bushes are a massive pain. I've done the rear camber and traction arm bushes (off the car without a press), the HICAS ones and the diff bushes (on the car yay) and they all take ages and are extremely tedious. I reckon you'll end up paying 2-4 times the cost of the bushes in labour. And it's still so worth it.

I did a run with the oil cooler blocked off, suburban speeds, ambient temp 20C: Defi oil temp reading 67C – sump 80CSo it's about 5C higher at both points than with the cooler unblocked. Note this is in slow speeds so the cooler wouldn't be very efficient anyway. The temp sensor is definitely in the wrong spot, I'll get that sorted. The jury is still out on how well the sandwich plate thermostat is working.

Thanks guys, great response! And yes it's been running 275rwkw @ 20psi on 98 so almost double the stock power for quite a while now, gotta be happy with that

That's pretty cool. So many options!

I got a comp test done recently on my RB25DET Neo ('98, about 150k on it) just out of curiosity, here's the results: #1 - 165 #2 - 150 #3 - 160 #4 - 150 #5 - 155 #6 - 155 It's within the 10% variation, just. Anything to be concerned about, should I get a leak down done? Car is running fine, just with an intermittent miss, same as it's always had... (EDIT: Not sure if above figures are hot/cold/dry/wet, will check)

I've considered that too, the issue being that it sits between the rad and intercooler so would block off airflow to other components as well...

I would tend to agree The one thing I like better about the Mocal one is the 92C thermostat (if it works?!) - I believe the Greddy plate comes with a 80C one. What temps are you seeing in normal driving over summer?

I didn't realise there was a stock oil temp location on the RB25DET? Whereabouts is that?

Thanks mate, that seems like a good solution. I've just ordered this AN10 inline sensor fitting, might try that first: http://m.ebay.com.au/itm/AN10-10AN-JIC-FEMALE-to-MALE-GAUGE-SENSOR-FITTING-ADAPTER-1-8-NPT-PORT-BLACK-/231353204035 Keen not to swap the sandwich plate again as I already have the previous one sitting on the shelf..

Correct, the oil temp was always spot on in street driving. At the track the temps shot up to 120C after pretty much a single hot lap, though this was on a 37C day. I'm yet to try blocking the cooler, good idea, I will aim to do that tomorrow. Ok so exactly as I thought, thanks mate! Next question: Where do people place the temp sensor for an accurate reading with this type of sandwich plate? It doesn't have a sensor port. As far as I can figure the options are: Run an inline AN10 male-female fitting with a sensor port – is there enough oil flow in the cooler circuit at <thermostat temp for this to work reliably? Run a second sandwich plate for the sensor – not ideal Drill a sensor bung in the sump – sounds like a big sump-off job Get a Greddy/GREX sandwich plate that has both a thermostat and fittings for temp/pressure sensors – not ideal since I already have a sandwich plate Would option 1 work? Any other suggestions?

Yep I spoke with a Mocal distributor today and they explained the same thing that a certain % is always going through the cooler. What I'm wondering though is if I have the right thermostatic pellet in the sandwich plate, since it seems like it's not just a trickle going through it? Assuming the temp sensor is currently post-cooler (as opposed to previously pre-cooler) it looks like I'm getting a pretty significant temperature drop at temps well below the previous standard operating temp. Oil temps before the oil cooler installation were 80-90 degrees in normal driving. The same Defi sensor was sitting in a (different) sandwich plate so the oil was flowing through it, as opposed to sitting at the 'end of the line' like it is now.

Hi guys I'm reposting from here and here as this is going a bit beyond the scope of the original threads. Anyway I've just had the Driftworks oil cooler kit install completed on my R34 GTT: Mocal/MIH 19 row Oil Cooler Mocal 92 degree thermostatic sandwich plate Braided oil cooler hoses Sandwich plate fittings The cooler seems to work well - in fact too well - as I can't seem to get my oil temp up to the recommended range even after a long drive. Test drives so far (all light cruising until I sort out the temps): Melbourne to Torquay, 1.5h freeway, Defi oil temp is reading 55-60 degrees, ambient temp just under 20 Torquay to Melbourne, oil temp ~60 degrees, ambient temp 25 Suburban driving, slower speed, oil temp 55-64 degrees, ambient temp 25 ... I can think of a couple of potential causes: 1. Maybe the thermostatic wax pellet in the sandwich plate is not working and the cooler circuit is stuck open or opens too early? Trying the core by hand it's hot but not unbearable. It's definitely flowing a lot of oil during each drive, and well below the expected 92 C opening mark. Also driving a couple of k's from cold start you can feel the oil cooler feed hose getting warm straight away whilst return stays cool. 2. I previously had the temp sensor in a separate sandwich plate with oil flowing through it. For this install the workshop removed the factory pressure sensor and teed off that point – I'm guessing this might be after the filter as opposed to before, which would explain the lower reading? Here's how the Defi temp sensor is sitting at the OEM oil pressure sensor location (the other end of the T-piece is currently blank waiting for the Defi pressure sensor): I did some quick temp measurements off the sump earlier tonight (externally using a laser thermometer) and found the following: Defi oil temp reading 53C – sump 68-70C Defi oil temp reading 61C – sump 76C Defi oil temp reading 64C – sump 75C This might support the theory that the OEM oil pressure sensor point is not ideal for getting oil temps? What do you guys think: a faulty thermostat, incorrect temp sensor location, or both?

I spoke with a Mocal supplier earlier today and they asked a really good question - is it possible that the factory R34 oil pressure sensor is after the filter, not before? Because if that's the case my Defi is currently reading the temperature of the oil coming back from the cooler, not the oil going out. Can anybody confirm or deny? See below for a photo of the factory oil/water cooler, with the pressure sensor on the left:

Thanks guys. Here's how the sensor is sitting, I'm pretty sure that's the OEM oil pressure sensor location: The other end of the T-piece is currently blank waiting for the Defi pressure sensor. I'm thinking of swapping the two so that the temp sensor is closer to the block but I'm not sure if it's still going to give me as accurate a reading as when it was sitting in its own sandwich plate...? ... EDIT: Did a long distance drive back to Melbourne today, the Defis were reading a consistent 60C for oil and 80C for water. Ambient temp 25C. So the oil was a little warmer than on the way down when the ambient temp was just under 20C.

Yep that's what I thought. I'm still not a 100% sure about the new temp sensor location, it's sitting about 5cm out from the block at the end of a T fitting so it might be reading low too.

Cheers Johnny I'll try that. Driving a couple of k's from cold start you can feel the oil cooler feed hose getting warm whilst return stays cool. I wonder is this means that the thermostat is not working?