Rb25det/rb30 Engine, Need Advice

[Stagea Denmark]

Hi Guys.

I need some advice to find parts for my new engine.

I got 2 RB30DET engines from Australia, and have searched the internet to find rods, pistons ect., good enough to make more then 800AWHP, Tomie rods and pistons is rated to max. 750, whats better and stronger, i have 2 RB25DET engines, and one of these will be the top on this engine, right now i have a guy and he taking good care of this top, and porte is, the inlet looks fine, but there is a bigger job on the exhaust site.

Setup will be a big single turbo, a GT42R, i have the R34 gearboks, have a guy who will build new axels, he normally build to tractor-pulling :-)

I have a trible HKS clutch.

This will be a everyday car, and for some fun in the weekends at the dragstrip, i know i will get lag, but thats fine.

Car is a Nissan Stagea RS-Four V

Where will my limits be, what to be wear of, don´t know anything about this RB30 bottom, have bouild many 2JZ-GTE and RB25DET engines, but never this one.

Have found a lot treats here, but not with the same goal as i have.

So far i have found:

Cams Tomie Pro 260 in/ex - 10.25. + lifters.

Bearings and gaskets.

Waterpump

Oilpump

Edited September 13, 2008 by Stagea Denmark

[VB-]

dont rev it too hard

[Stagea Denmark]

dont rev it too hard

Hi, i know, my last RB25DET (530hp) was killed that way ;-)

[Adriano]

What oil pump have you got? I would seriously consider a stroker crank from shanef . Argo or pauter rods, cp or je pistons, all arp fasteners, and much bigger cams than the 260's you have, you will need at least 272's to make 600awkw. Probably would get the rb30 adapter plate/crank girdle from shanef as well, as its the best one on the market.

Edited September 13, 2008 by Adriano

[KiwiRS4T]

What oil pump have you got? I would seriously consider a stroker crank from shanef . Argo or pauter rods, cp or je pistons, all arp fasteners, and much bigger cams than the 260's you have, you will need at least 272's to make 600awkw. Probably would get the rb30 adapter plate/crank girdle from shanef as well, as its the best one on the market.

Have a read of the last page or two of the "poll:stroker kit of choice " thread in this section - I have PM you re going to R.I.P.S for some info and pos parts

[Stagea Denmark]

What oil pump have you got? I would seriously consider a stroker crank from shanef . Argo or pauter rods, cp or je pistons, all arp fasteners, and much bigger cams than the 260's you have, you will need at least 272's to make 600awkw. Probably would get the rb30 adapter plate/crank girdle from shanef as well, as its the best one on the market.

Nismo oilpump.

Can you sent me a link to these companys.! (shanef . Argo or pauter )

On the bottom i will use ARP, on the top i will use the originals.

[Adriano]

Speak to shanef or spoolup on the forum, both should be able to help you out with the parts. I dont think stock rb25 M11 head bolts will be up to the task, i would say you will have to retap the block to take rb26 M12 ARP head studs(and drill out the head bolt holes in the head to suit)

[R.I.P.S NZ]

You'll get alot of conflicting information and alot of the "you can't to this and that" or "don't do this and that" comes from guys who havn't actually pushed motors very far at all.

11mm head studs are fine, we have been to over 900whp with them, done hours and hours on the road and dyno and raced all season getting down to 8.7 @ 162mph with 11mm head studs, a stock 2wd block, stock crank (revved to 9000rpm) stock cradle, stock used mains bolts and no block filler or block braces at all.

Sift through all the information and you'll soon find out what is realistic from guys who have actually done it and what is not so true usually from guys who havn't.

Rob

[Stagea Denmark]

You'll get alot of conflicting information and alot of the "you can't to this and that" or "don't do this and that" comes from guys who havn't actually pushed motors very far at all.

11mm head studs are fine, we have been to over 900whp with them, done hours and hours on the road and dyno and raced all season getting down to 8.7 @ 162mph with 11mm head studs, a stock 2wd block, stock crank (revved to 9000rpm) stock cradle, stock used mains bolts and no block filler or block braces at all.

Sift through all the information and you'll soon find out what is realistic from guys who have actually done it and what is not so true usually from guys who havn't.

Rob

Hi Rob.

Thanks, and i know i will get a lot of informations everywhere, good ones and bad ones, the RB30 is new for me, and i really have searched the net to find information, looking at your page (Nice one), seen videos of cars with R.I.P.S engines, thats for sure powerfull cars, but i am a Home-builder, and thats sometimes give me conflicts, and i pay, thats the same way i will build the RB30, and the reasons i purchased 2 of them, i am willing to pay the "Learn-money".

Many people thinks aggresive cams like 272, 286 is the ones to go for, maybe, that depends on how and where you need your boost, at what rpm ect. i will rater go for 260 with the highest lift, and better valve-springs. I will use the standard crank, dont touch it, find the best h-beams, have heart about a company in Sweden, but cant find them, pistons, rated and tested to more then 800+ hp, i know many people believe what they read on the internet of numbers from the producer, i rater believe in peoples experiense/personally tests. Try to find a company, maybe HKS and see the specs of the cams, are you going for less than 800 hp on a 2JZ-GTE (Supra) engine, HKS advice 264 or lower, more than 800 hp, 272 cams ect.!

Strokerkits, i will never do this, i like the short h-beams, big volume, high rpm. (Look at F1, how they build there engines)

I know Tomie makes some fine pistons, and they rated them to max. 750 hp, i will go for more, better build a engine to 1000 hp, and run with 800.

I have calculated, that i have to make a boost at 1,5 bars, to make 800 hp on this RB30, with a GT42 turbo, and thats my goal.

Learn-money, when i build my red stag, a straight RB25DET, standard cams, h-beams, bearings, gaskets, no-ported, only changed the inlet, and exhaust manifold, injectors, and mounted with a T70 turbo, people keeps telling me, you will never make more than 400-430 hp, today i make 530 hp and 561 tourqe, and have max. Rpm at 8400, 1,45 bars boost, it runs every day like a well oiled machine, goal is 600 hp., i will show them, i make my own ECU, and adjust it myself. (Work on a tuningshop). But before i pay Learn-moneys this time, i will try to use peoples experience, tests ect., from where this engine is made for, only the Australian marked, that’s the reasons for this treat.

“Highest possible flow from air filter, to output of exhaust ~ good adjusted ignition ~ good injectors ~ right among of fuel all the way”

Back to bussines, where can i find the best h-beams and pistons for a RB30 engine.!

Have a nice day.

Edited September 14, 2008 by Stagea Denmark