Rebuilding RB26 motor advice?

[WHITEBEAST]

Hello all, I have just join your forum in interest of looking for any information on engine rebuilding and working of my recently blown up GTR, I blew a hole in my no.1 piston my RB26. I only bought this car from a dealer about 11 months ago, and have spent that much money on my car it is starting to cripple me slowly (but that is the price of owning a GTR.) I found this car after looking for a Nissan Skyline for around 3 months, I was thinking of buying a R34 GTS-T '99 model. That was until I drove a GTR, I couldn't believe the difference in power it had. And it was cheaper AU$23,000 complianced, registered, 88,000 km, though it was 8-9 years older. Now this car was stock apart from exhaust and air-pods. I also had my mechanic check over it and check the compression which was good, 165 PSI - 170 PSI all the way through. I was also thinking of getting the bores scope tested to make sure I didn’t have to replace a AU$5000 minimum motor but I never did.

After I bought the car I removed the valve from the turbo boost solenoid vacuum line, in turn creating more boost, around 12 PSI (1 BAR) boost. Which all sounds fun and easy to do and nearly doubles your boost from 7 PSI to 12 PSI (makes a difference). But... As I said before I’ve recently blown up my motor, was it because I over boosted it, NO! I’ve heard that the RB26 stock motor is good for 15 pound of boost, so it leaves me to think of possible ways it could of happened;

- Motor finally letting go since it was last driven hard in Japan, or;- Timing was out and allow motor to ping, or;- Bad batch of fuel in car (only used expensive high octane fuel).

Either way I am rebuilding my RB26 engine, it is currently at the mechanics having the motor removed, He has given me a price for a good rebuild which includes;

- Forged Racing Piston- Racing Rods- Studs- Bearings- Crank Collar- N1 Oil Pump- Tomei - Sump Baffle Kit- Metal Gaskets- Head Reco’d - Machining & Blue Printing

AU$6000

He has also offered me the equivalent to the HKS turbo’s and there AU$1000 cheaper, which are suppose to be capable of 25 PSI of boost. Which means more money on things like intercooler, injectors and most importantly the aftermarket computer, which is just needed for a GTR skyline. He was telling me that he had just put a motor the same together, which recorded a dyno measurement of 350kw@wheels. If anyone has any information on engine rebuilding please post any comments even any Skyline enthusiast comments will be appreciated. Thankyou WHITEBEAST

[dickie]

hi there, welcome to nico.

i moved this to the RB motor section for you so you would get some good information as opposed to a lot of threadjacking and pic requests from the fanboys.

good luck with your project, i hope it turns out well!

[tyndago]

Price is low if you are actually going to be getting those parts. Just those parts , decent parts would add up to more than 6k AUD.

N1 oil pump is a crap shoot right now , have had a few of them fail with very low mileage.

#1 piston is a weird one to go. How did #6 look ? Usually its #6 then #1. Maybe you have another problem there.