HOT_R33 Posted July 8, 2012 Share Posted July 8, 2012 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. 1 Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/ Share on other sites More sharing options...
tweety bird Posted July 8, 2012 Share Posted July 8, 2012 interesting project you got there. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6434425 Share on other sites More sharing options...
Al Despo Posted July 8, 2012 Share Posted July 8, 2012 Had my patrol motor out last week and was thinking the same thing. Good luck mate hope it works out. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6434449 Share on other sites More sharing options...
WHITER33GTS-T Posted July 8, 2012 Share Posted July 8, 2012 (edited) Have a search for "allout R33" on youtube... This runs a RD28 block Edited July 8, 2012 by WHITER33GTS-T 1 Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6434621 Share on other sites More sharing options...
Berk Posted July 8, 2012 Share Posted July 8, 2012 Hardly think your "dusting off an old RB30E and hoping for the best" comment is warranted. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6434879 Share on other sites More sharing options...
HOT_R33 Posted July 8, 2012 Author Share Posted July 8, 2012 Yes, I do apologize for that, I've seen a few too many split on the dyno so I'm a little dirty with regards to them. Each to there own I know and that was just my take on it. Not aiming to offend. Hardly think your "dusting off an old RB30E and hoping for the best" comment is warranted. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6435070 Share on other sites More sharing options...
Tai1or Made Posted July 9, 2012 Share Posted July 9, 2012 Posting so I can follow this. I R interested. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6435164 Share on other sites More sharing options...
MBS206 Posted July 9, 2012 Share Posted July 9, 2012 Been done multiple times before, there's even references in the RB30 section to people doing it. There was even some reasoning as to why the RB30 was a better choice but I can't remember them because even at 3.2L... Not enough displacement... Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436219 Share on other sites More sharing options...
Tai1or Made Posted July 9, 2012 Share Posted July 9, 2012 Been done multiple times before, there's even references in the RB30 section to people doing it. There was even some reasoning as to why the RB30 was a better choice but I can't remember them because even at 3.2L... Not enough displacement... Remember reading this as well. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436431 Share on other sites More sharing options...
Ryno Posted July 9, 2012 Share Posted July 9, 2012 What's the difference in the height of the block? I'd love some extra displacement, but don't have the room for the 30mm or so than an RB30 would add. This could be a cheaper option than over $5k for the Spool RB28 kit, or $8k for the Tomei kit! Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436487 Share on other sites More sharing options...
HOT_R33 Posted July 9, 2012 Author Share Posted July 9, 2012 I'll get back to you about that one. What's the difference in the height of the block? I'd love some extra displacement, but don't have the room for the 30mm or so than an RB30 would add. This could be a cheaper option than over $5k for the Spool RB28 kit, or $8k for the Tomei kit! Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436610 Share on other sites More sharing options...
vorse Posted July 10, 2012 Share Posted July 10, 2012 lurking this is very relevant to my interests Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436703 Share on other sites More sharing options...
HOT_R33 Posted July 10, 2012 Author Share Posted July 10, 2012 Same height as an RB30 mate. Hope that helps. I'll get back to you about that one. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436716 Share on other sites More sharing options...
vorse Posted July 10, 2012 Share Posted July 10, 2012 is there a build in the works ??? can we get a build thread going love to build an rb28 one day Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436720 Share on other sites More sharing options...
HOT_R33 Posted July 10, 2012 Author Share Posted July 10, 2012 Yes there is a build in the works but this one in particular uses a 2.8L Nissan Diesel block with the intention to use a 3.2L stroker kit. If it generates enough interest I'll make a build thread in the appropriate section. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436734 Share on other sites More sharing options...
vorse Posted July 10, 2012 Share Posted July 10, 2012 very interested in this to see how you get on even without the 3.2 sure it will be an animal of a motor PLEASE make a build thread Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6436744 Share on other sites More sharing options...
MBS206 Posted July 10, 2012 Share Posted July 10, 2012 What's the difference in the height of the block? I'd love some extra displacement, but don't have the room for the 30mm or so than an RB30 would add. This could be a cheaper option than over $5k for the Spool RB28 kit, or $8k for the Tomei kit! don't expect to get away with anything like this for under 5KFirst up, you're going to want to rebuild it anyway, then changes in inlet piping, exhaust, radiator etc etc, Add on top a retune... its going to be exxy... Also 40kg heavier is the mention of it over an rb30. I'll pass for a street car... much better engine choices out there for cheap displacement in a skyline Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6437000 Share on other sites More sharing options...
HOT_R33 Posted July 10, 2012 Author Share Posted July 10, 2012 Error. Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6437070 Share on other sites More sharing options...
HOT_R33 Posted July 10, 2012 Author Share Posted July 10, 2012 Yeah, this was really meant to be a solution to block degradation post stroker enhancements to achieve a 3L+ displacement. More designed for people looking at the 800HP+ area. I think a street car application would be pushing the limits of legality and practicality. Not unachievable though.....just over kill for street use. The cost is a turn off at the moment but I believe that will change with time, although if your looking for cheap power, the last place you would look is a GTR build. That has at least remained constant over the years. don't expect to get away with anything like this for under 5K First up, you're going to want to rebuild it anyway, then changes in inlet piping, exhaust, radiator etc etc, Add on top a retune... its going to be exxy... Also 40kg heavier is the mention of it over an rb30. I'll pass for a street car... much better engine choices out there for cheap displacement in a skyline Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6437083 Share on other sites More sharing options...
m.j.h Posted July 10, 2012 Share Posted July 10, 2012 It has probably been mentioned but I easily miss stuff so dumb question time What head do these blocks take? The 26 or can you use a 25 neo head? I did warn you all it was a dumb question Link to comment https://www.sau.com.au/forums/topic/404260-rd28-development/#findComment-6437171 Share on other sites More sharing options...
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