p510psi's RB25DET 240Z Project

[Zedman240®]

Excellent progress; its come a long way since I saw it last..keep us posted Craig!

[rome_rod]

You don't need all the relays to make it work in the car. It depends on how it has been setup in the car - you could hardwire a number of these items  instead of having the ECU drive them. I went to the approach of having all controls (including lights, wipers, horn etc) being low current signals to switch relays as this allows the use of a power distribution box. This in turn keeps all the power supply wiring much tidier. It also makes it much easier to diagnose problems in my opinion. As I was going for a complete rewire of the whole car I wanted to integrate the everything into the one electrical system.

 

NZeder -  I'll keep an eye on your project thread to see how it all goes. Your car is looking very impressive!

p510psi is correct you don't need all that to get the engine working but you should have at least the following

 

1 x Relay for the Fuel pump (don't drive it from the ECU directly )

1 x Relay for the Fan same reason - assume your ECU is driving an electric fan

1 x Main ECU relay - that can drive all other circuits

 

I started with a 260z which has more modern style electrical circuits (sort of Nissan went part the of the way) and therefore already had an ACC relay for the ACC circuits. But like the 240z full current passes through the combination switch for hi/low beam so I am rewiring the heads to include relays. I will add an IGN relay and then all the normal EFI relay, Coil, ECU, Fuel Pump and Fan. Things like the O2 power, dropping resistor power etc will come off the IGN relay.

 

Anyway sorry for the slight thread hi -jack I will post up a diagram in a new thread of the changes I make so others can see what I have done (when I do it lol)

 

Cheers

Mike

 

Excellent work. Any update on this project? How is it coming along?

 

Off-topic question: how does one subscribe to threads so one can receive updates through e-mail?

 

[p510psi]

Hi all - just a short update on some recent project progress.

 

I decided against forging ahead with the exhaust and intercooler piping while retaining the standard turbo and manifold. The more I looked at it, I realised that I would have to change things substantially to accommodate the turbo I had planned to fit at a later date.

 

So, a bit of research and many measurements (and some favourable exchange rates) saw me going for an exhaust manifold from SINCO in NZ. Overall, I'm pretty pleased with the positioning of the turbo and the available space for the external wastegate, oil & water lines etc.

 

 

 

As illustrated in the photos, I still need to finish of the piping fabrication - it's just tacked together to get everything fitting.

 

I'm gradually working through the long 'to do' list.

 

Craig

[C.A.R.]

Turbo is a GT35r?

[mossy]

I almost bought this car off Sulio when he had it for sale, seeing the way it looks now with those wheels and that stance i wish I did!

[p510psi]

The turbo is a GT3040 (GT3082R). I had originally purchased it five years ago for my old project car (Datsun 1600). I've seen good results using them on RB engines, so I decided to go with it rather than sell it on to go for the more popular GT35.

[p510psi]

Hi all - it's been a while since I provided an update, so I've included some images of what I've been working on.

 

Following on from my last post, I have now completed all the setup of the turbo including the intercooler piping and dump pipe. I'm currently finishing off the remainder of the exhaust system.

 

 

 

 

 

 

Next on the list is an oil cooler setup, sway bars and some interior items. Hopefully it should all be done before mid year.

 

Craig.

 

[Zedman240®]

Its come a looooooong way since I saw it last Craig! Well done and keep up the excellent work...

[Agno]

Tough! Really like the R33 gauge install too!

[p510psi]

Hi all - I've made some progress since my last update. The engine is running again after the changes to the intake and turbo side. I've run it up to temperature in the garage without any issue, here's a video of the first crank earlier in the year (with only the dump pipe fitted).

 

 

 

 

The exhaust is now completed and fitted to the car. Although I've only started it up and given it a rev in the garage, it appears to sound OK.

 

 

I've also decided to change the current 17" Simmons wheels I have now. I'm after a more nostalgic Japanese look, so I have  purchased a set of 17" Rota RB-R/X with ZG flares. I'm running 9.5" on the rear and 9" on the front. While I would have preferred to go for a set of 16" Watanabes in the same width, it would require changing my front brakes to a smaller diameter for clearance. This is something I'll consider again in the future.

 

I had the Rota wheels painted in a flat dark grey - it probably doesn't suit everyone's tastes, but I'm happy with the result. I'm currently sourcing the tyres - I am going for 255/40/17 Falken RT615 on all corners. Once they are fitted and I'm happy with the alignment of the flares, it's time to get the angle grinder out to the cut the body!

 

 

 

 

 

Finally, I have also been slowly working on tidying up the interior.

 

 

 

Next jobs are fitting the classic rear lip spoiler, ADR approved race seat and oil cooler.

 

Thanks,

Craig.

[p510psi]

I'm beginning the preparation for replacing the floor pans, so I thought I would take the opportunity to get a bit more inspiration by getting the car back on it's wheels with the new additions of front and rear lips.

 

 

While I had planned to do the floor pans myself, I think I'll look for options of getting someone more skilled than myself to do the work.

[C.A.R.]

Look tuff.

 

I'd seriously look at just patching the floor-pans - rather than the whole floor - as the rest of the floor looks quite sound from the photo.

 

[dat240z]

Nice mate, love the rims and engine combo. Same as me, except id kill for the high mount turbo set up..... replce the entire floor pan i reckon, do it once, do it right

[Monster1000]

Hey mate, keen on car could you call me on 0416066914