We’ve seen numerous RB engine swaps into Datsun Zs and Silvias over the years: it’s as popular a swap as the supply of RB engines (and empty Skyline GT-R engine compartments) will allow. Given the DNA and evolutionary path of those cars, an RB swap there is now a known science. But the G37s has no evolutionary roots in those cars, so this is something entirely new and entirely different. And it’s also a hybrid of an RB30 iron block, an RB26 DOHC head, and an RB25 gearbox.
This was not an easy swap, but perseverance got it to a successful completion. While the swap and electronics were one thing, along with issues such as a throttle body, transmission spacer, throttle and clutch pedals, driveshaft, final drive ratio, surge tank, and many more – ultimately the engine tuning was the worst speedbump along the long road to completion. So like many other swaps, success was not at all easy and not a given. Kudos to the owner for being so open.
The swap has been extensively documented on My37.com, along with the full specs, and we’ve got some sample pictures and videos below. Follow the full thread for the complete story – it’s a great read!
Later 25PSI tune (with obligatory flame)