Hey guys,
I'd just like to get a little feedback about a project that I and a few colleagues are taking part in.
Basically it's about creating an option for RB26 projects when it comes to high HP single or even twin turbo applications. Instead of boring the original RB26 block to accommodate 2.7, 2.8, 3.0 or even 3.15L stroker kits and potentially weakening the block, we thought a different block all together might be in order.
The project is a cast iron Nissan RD28 diesel block which just so happens to line up quite nicely with an RB26 head after only a little modification. Thus making an instant 2.8L block without sacrificing cylinder wall thickness i.e. block strength.
As you might be able to see from the photos, the oil gallery wall thickness and the cylinder wall thickness or almost exactly the same with plenty of 'meat on the bone' for larger capacity i.e. 3.2L with the appropriate stroker kit.
In short, this means a very strong cast iron block with no need to fill in some of the oil galleries like you would on an RB26 in order to insure block reliability. This means more cooling/lube for the internals by keeping the all the galleries open,
This block has been line boarded and has a custom Spool mains + plate. As you can see, the setup can obviously handle quite high HP applications and with the appropriate counter-balancing; see the better part of 10000rpm all day if needed.
Its a viable option for anyone considering a higher capacity rebuild with very little boring required if at all.
Certainly poses a better solution to dusting off an old RB30E and hoping for the best lol.
Anyway, I'll let the photos do the talking....
Please PM me any feedback or questions you may have guys and I'll answer them as best I can.
Cheers and enjoy.