R33 Rb30 Conversion

[N1GTR]

Don't worry guys, he's earnt a 5 day holiday.

Back OT now

[zebra]

Yay steve

No more 3L conversion for me...unless i stick a 2j in the soarer lol

So enjoy guys

[WHITER33GTS-T]

Has anyone played around with a RD28 diesel block... Ive seen that the Allout R33 is using one and running quick times

[NYTSKY]

One of my fav cars at the moment. Engine combo is pretty insane.

Not bad for being built by a cement renderer lol

[cactus]

One of my fav cars at the moment. Engine combo is pretty insane.

Not bad for being built by a cement renderer lol

Can anyone tell me how thick the top of a CP piston for Nissan RB30/25 (86.5mm 9.0:1 comp) is, or roughly what it is?

Any info ASAP would be awesome.

[fr0st]

My head and block is getting machined up at the moment. Apparently my pistons were missing there spec sheet so I did a search and came up with 3 thou piston to bore... thought I just read another thread that said 3.5 thou is the standard. Should 3 thou be fine for CP flat tops?

Cheers

-Matt

[johnbarry88]

dont quote me on it but im thinking anywere from 5.5 to 6thou maybe

[GTS-tt]

A big 2 thumbs up and thanks to all those who have contributed to this thread.... Effing fantastic!

Just wondering if there has been an update to the pdf doc? The latest version I can get my hands on is November 2007? btw this is not the one listed on page 1, that one is 2006.

I'm currently in the planning/purchasing stage of my RB30 build up. I currently own an R34GTT and I'm planning for more of a "budget build" where my max power at the rears will be capped at 250-300KW....eventually. With a shit load of torque of course for that V8 feel! Apart from the S2-RB30 block I'm planning to keep everything as is. Sitting at the correct height by modifying the engine blocks I'm hoping to use my standard R34 head, then bolt everything back up for a standard looking engine bay. In the beginning I'm even planning to use my standard R34 turbo etc. Might end up getting it high flowed and keeping it coz the cops here in SA are nazi's and I drive this car everyday.

I don't want to be that guy who after 350 pages still asks "does anyone know..."? But if anyone has any thoughts I'm open to ideas, more importantly if anyone knows the right people to speak to here in Adelaide it would be appreciated.

Cheers in advance guys.

[TiTAN]

expect the stock turbo to nose dive hard after 5500-6000rpm.

[GTS-tt]

Thats alright!

to begin with.....

p.s. I should be alright with a remap to run the show?

[KiwiRS4T]

As in Nistune chip and tune? Yes

[bubba]

expect the stock turbo to nose dive hard after 5500-6000rpm.

My stock s1 25 turbo took a severe nose dive at 5800rpm.. could probably squeeze a little bit more out of the OP6 housing but not a lot.

[HR31-PASSAGE]

hey guys i'm abit confused with something that info it says head needs to be modified but doesn't say what needs modifying. what does this mean by that?

[JonnoHR31]

the 25 head needs to be modifed around the vct feed. the vct feed needs to be welded up and then the head re faced. also doesnt hurt to chuck whatever gasket your gonna use against the head and make sure the surrounding water gallery will seal properly

[HR31-PASSAGE]

hey guys i'm abit confused with something that info it says head needs to be modified but doesn't say what needs modifying. what does this mean by that?

ohh ok so my s2 R33 rb25det head wouldn't be a straight fit onto an already built rb30 block that was used for the rb25/30det set up previously would it? if the head needs to be faced...

[JonnoHR31]

correct. you also need to feed oil to the vct. but its all pretty easy if you follow the guides on here

[HR31-PASSAGE]

correct. you also need to feed oil to the vct. but its all pretty easy if you follow the guides on here

i'm not going to keep vct so that shouldn't matter....

are there any guides on this going the way with out keeping the vct?

[bigmikespec]

Has anyone played around with a RD28 diesel block... Ive seen that the Allout R33 is using one and running quick times

Kind of off topic but I would also like to know if anyone has done it and wants to share some information... would love to know the rev limit set in the Allout R33?

[KiwiRS4T]

Why are you not keeping the vct? Costs very little to do - there is even a thread on doing it without an external feed.

[HR31-PASSAGE]

Why are you not keeping the vct? Costs very little to do - there is even a thread on doing it without an external feed.

couldn't be bothered doing the extra work haha & you only lose acouple hp with out so i've been told...

got any links for the threads anyone?