Tomzern

I thought the gearbox might be to weak for those power figures myself? What is the maximum safe HP/NM that the RB20 box can handle? In the beginning I will run this setup with a stock RB25 turbo, so the power output won't be that high. I am hoping the stock tranny will work with the initial setup. If I decide to upgrade later, will the driveshaft fit the RB25 box as well? The box that is in the Z now, is a much older 5-speed Z-box.

Not an option. Thanks for your help though?

Hi Kiwi, Thanks! Well, actually it is a big bore Rb20, so it's a 2,26L, with forged pistons and some other nice bits. I made a topic about it in the RB section. I think it will work very well in the Z, as it is a very small and light car (around 1060kg), and the sound is half the fun. I'm hoping for high rpm figures

Hi! So I bought a couple of RB's recently. First I bought one, which turned out to be in a worse state than I anticipated. I contacted the seller, and he had another RB20 which he called a "stroker". He kindly GAVE me this engine as well, so now I have two for the cheap price of one! The "stroker" engine is now opened for inspection, and what I found was 83mm forged pistons, stock crank and rods. An engine calculator translated this to 2,26L of displacement. The head featured what I think is Tomei cams with adjustable Tomei pulleys. The cams are stamped "64 - 8.5" at the rear ends, and they both have a white T written on them. I believe this means they are 264's with 8.5mm lift. Can anyone verify this? The big bore engine also came with a HKS dual plate clutch. The other one came with a single plate ACT clutch. Which one should I use on my engine? The car is a street car and I want a clutch that is not too harsh. As for the power output I am hoping to be able to run around 300rwkw, but in the start I will use the stock RB25 turbo that came with the other engine. I also wonder where I can find an 83mm bore MLS head gasket for my engine? As for engine management system, I have a cheap AEM Series 2 PnP ECU on hand. Is this a good choice? And oh, the engine is going into my 1970 Datsun 240Z, along with a stock RB20 tranny. There will probably be more questions later, so I thought it was a good idea to collect them all in this thread Best regards, Tomzern

Hi guys! I am a 29 year old guy from Norway. I have owned my Datsun 240Z since early 2013 and for the last couple of years I have been working on an L31 stroker for it. This project has been an expensive pain in the ass, and I just recently decided to sell the engine and choose the RB path instead. I have just sold the stroker, and bought myself a couple of RB20's (Got them very cheap, couldn't resist) and a tranny, wiring and everything. When I started googling my questions about the RB I stumbled upon these forums, so I thought it would be smart to become a member here? I'll leave a picture of my baby here as well☺️ Best regards, Tomzern