Hi all,

I was watching a Best Motoring video last night and saw a very nice RB20DE (NA) in an old R31. 2.4 ltr and reved very nicely. I havent been able to find much on the NA RBs, do any of you guys know of anyone who has put an NA into a Z or any idea on the specs of a DE?

ALso, what is the feasibility of attaching my FJ gearbox and triple 45mm Webers?

Thanks Guys, As always

Hi all,

I was watching a Best Motoring video last night and saw a very nice RB20DE (NA) in an old R31. 2.4 ltr and reved very nicely. I havent been able to find much on the NA RBs, do any of you guys know of anyone who has put an NA into a Z or any idea on the specs of a DE?

ALso, what is the feasibility of attaching my FJ gearbox and triple 45mm Webers?

Thanks Guys, As always

I dont mean to be a pest but if it was an rb20de then wouldnt it only be a 2ltr? And from what I've herd and if I understand correctly, your better off with the L24 over the rb20, but i may be incorrect, it wouldnt be the first time.

The RB20DE(T) is, well....small. The power it puts out stock is really unimpressive, and for the price one pays to acquire, install, and modify mounts/transmissions to work in a Z, you could have a NICELY built L-series that outperformed it in every way except uniqueness. Not to say it isn't a great engine, but c'mon...2.0 litre six?

For starters, yes an RB20 is 2ltr, but adding an RB25 Crank and 4AGE Pistons takes the 20 to 2.4Ltr.

In no way (excep one that had mucho $$ spent) is an L24 better than a RB20, DE or DET, the L series is too simple a motor. I think the main problem here is that the difference between USA and Australian engines is vast.

The red top motor that was shipped with R31's are not the RB20s that we in AUstralia talk about, ours source from the R32. And as we did not get the 280ZX Turbo, turbing an L series is far from a cheap option, especially when i can drive in (with a stock L series) spend AUD 7k (around 5k US) and drive out with an RB25 DET, fully complianced.

But after some investigation, ive found that this is going to be very pricey (the awsome reving RB20DE) vs a RB20 DET or 25DET.