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Power Plant

This is one area of the project that I changed my mind on. First I started to build a L28 that was bored to just over 3000cc. Using some Tomie pistons from Japan that were designed for the L28 stock stroke but using the longer L24 rods these took the stock 86mm bore out to 90mm – yep 4mm over the standard.

Just before I complete the build on this engine I decided I really want to change the theme of this project. I have always loved the PS30 aka Fairlady Z432. Approx 480 were build and sold in Japan. These domestic models were power by the Nissan S20 engine which is a 2000cc inline 6 with DOHC configuration and triple side draft carburetors. As there engines are rare finding one was out of my budget so a modern Nissan DOHC inline 6 was selected. Here are some pics of the S20 engine.

Initially I was going to build a RB30DE with the triple DCOE throttle bodies that I had for the L30 project. But I managed to find a hybrid RB engine that was freshly imported from Japan. The new heart for the project was going to be a RB25 bottom end with a RB26 head. To help fund the project other parts had to be sold off, so the RB30E engine was sold as was the RB26 head I purchased (I purchased a complete RB26 at one point but sold the bottom end quickly after I removed the head).

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