RB26 in an S30

[strokerzedd]

I've read all 54 pages and still have questions before I start buying engines and parts. My '72 240z has a 3.1 litre that really can't be modified any more, but it's not enough, hence the RB26 install. I understand that the bottom end is strong but I still want to install aftermarket pistons and possibly rods, ARP bolts throughout. I'd like to clean up the head and upgrade the cams/valve springs, reatiners, guides etc. I'll install an aftermarket high pressure oil pump. What are the pros and cons re: injectors or throttle body? Is it best to retain the twin turbo configuration for lower end torque or use a large single higher rpm power, for the street? Which aftermarket turbos for each application? Which ECU is everyone happiest with? I hope that these questions aren't beneath this thread.

[74260zt]

Thats the exact same motor set up I use to run in my 74z. I had it pretty much maxed out, and it always happens...... want more power....

So I went with the rb26 for scarry street power. I almost have it ready to take its maiden voyage (hope by this thanksgiving).

Most, if not all your questions have been answered, so have a look in the archives and what you don't find, I'm sure folks will chime in to answer them for you....

[Vkoslak]

This may be of interest to you:http://web.mac.com/markrolston....html

seems like the hybridz.org website is down. But if it comes back up, that is a good place as well for rb powered first gen z cars.

If keeping the twins, I hear the hks 2530s are a nice option. Other than that, power fc is the preferred way around here for ecu tuning. I guess its going to come down to what are you going to do with it and how much are you willing to spend? Provide a little more info and the experts on here can give you some good opinions and options. Since this is the internet, verify what you hear

Welcome to Nico!

[Carl H]

pfc is the simple drop in solution but the rb26 ecu is eprom based memory so it can be chipped...which is a good thing.

[81na ZX]

seems like the hybridz.org website is down. But if it comes back up, that is a good place as well for rb powered first gen z cars.

It seems to come and go... But really, its the best place on the internet for your questions

[strokerzedd]

I visited your page before, it looks great! Let us know how it performs. Did you build your own intake manifold and turbo plumbing? It looks like that rear turbo is going to be a tight air filter fit. Did you keep the bottom end stock?I've owned my car since almost new and it's always been a passion, I've run lots of hillclimbs and won 3 provincial slalom championships with it. It's actually snowed up here already and I don't think it's going to melt so the car is going to be born again with an RB26. Has anyone ever had a motor built up in Japan, any cost benefits?

[strokerzedd]

Thanks for the advice and the welcome. That car from Texas is beautiful. I'm willing to spend what I need to to put 500-600hp in the car. It'll be used on the street (I'm going to put a second kill switch in it that my 3 teenage daughters don't know about!), but it'll also run hillclimbs. I roadraced GT2 and Formula Ford for years and I don't want to jepardize the bodywork on this car in wheel to wheel racing.

I understand that the RB26 bottom end is strong, is it overkill to put aftermarket rods and pistons in, or should I just balance it, put in ARP bolts and concentrate on the top end and intake? I'd like to use and ECU/computer that will allow me to fine tune the motor but I won't be producing 1000hp either. This is my first foray into forced induction and it's a completely different animal.

[Darius]

I would say, and I think most would agree, that for 500-600 hp on an RB26, OEM rods and pistons are fine. Rod bolts should be okay too. Change them out if you want added insurance, but I don't think I've heard of an RB26 failing at the rod bolts. Most I've heard of fail at the rings/ring lands because people push 24 psi of boost through them untuned.