If money was no object - What engine and spec

[WickedOne513]

I think I would have to change my vote now I would still like to build the BNR34 RB26 but if I could only have one I would buy the new R35

[beaumackenzie]

recipe.
take one rb30 block
add one rb26 head
two garrett 35/82 turbos
just add R.I.P.S.......

dish best served with n'o'2

[etikoner]

RB26DETT. N1 block,

ARC, Mines, HKS, PHA,

keep it 2.6L , mid 600 HP super responsive, high torque. high RPM capacity.

[seve7]

Originally Posted by SkylineUSA

426 Hemi Aluminum stroked to an 8 liter, with twin GT42s. That would be my engine if money was no limit!

With a huge 290*, 12mm lift cam 117lsa

With a progressive dual 300 shot fogger system.

Should have well over 2000hp, going through a Lenco Auto

mines pretty similar. 540+inch iron block, indy aluminum head. custom LSM cam somewhere around .800" of lift, twin gt42rs with zoomie exhaust lol. aluminum rods. complete jesel valvetrain. electronic sequential 6spd, awd transfer case, torsen diffs through out, and all of it wrapped up nicely in an ultima gtr.

[R.I.P.S NZ]

Originally Posted by seve7

mines pretty similar. 540+inch iron block, indy aluminum head. custom LSM cam somewhere around .800" of lift, twin gt42rs with zoomie exhaust lol. aluminum rods. complete jesel valvetrain. electronic sequential 6spd, awd transfer case, torsen diffs through out, and all of it wrapped up nicely in an ultima gtr.

Now THAT I'd like to see, get some pix and video on here!!!

Rob

[GT-R Glenn]

mines pretty similar. 540+inch iron block, indy aluminum head. custom LSM cam somewhere around .800" of lift, twin gt42rs with zoomie exhaust lol. aluminum rods. complete jesel valvetrain. electronic sequential 6spd, awd transfer case, torsen diffs through out, and all of it wrapped up nicely in an ultima gtr.

Thank goodness you are not talking about skylines.
1960's design Iron block ,couldnt think of a more USELESS engine to put in a really good car....

Rob, dont you go suggesting a 265 valiant engine ........

[tuRBy]

Originally Posted by seve7

mines pretty similar. 540+inch iron block, indy aluminum head. custom LSM cam somewhere around .800" of lift, twin gt42rs with zoomie exhaust lol. aluminum rods. complete jesel valvetrain. electronic sequential 6spd, awd transfer case, torsen diffs through out, and all of it wrapped up nicely in an ultima gtr.

that would be an insane amount of fun, id use twin T51R-SPL - imagine the Jet sound on 2bar lol

my ideal RB, i'd go for

Custom 2.85L stroker with 86.5mm bore
Higher compression [the highest to safely run 2.4bar on VP import]
RRR block
dry sump oil system
racing spec water pump made to fit
T51R-kai or spl
10 or 11,000 rpm head/cams
direct port Nitrous to spool fast at low rpm, at W.O.T
titanium inlet manifold, intercooler, piping and exhaust etc
paddle shift sequential like the new R35GTR
the current best Motec ecu

Always run on VP import race fuel, switchable 99octane map when on long journeys.

everything i could change to carbon or titanium, i would.

£££,£££.££ !

[tuRBy]

How much £ would a custom RB36 or RB40 billet block be? out of interest

[seve7]

Originally Posted by GT-R Glenn

Thank goodness you are not talking about skylines.
1960's design Iron block ,couldnt think of a more USELESS engine to put in a really good car....

Rob, dont you go suggesting a 265 valiant engine ........

haha useless engine? its still the most powerful racing engine on the planet. the aftermarket iron blocks are considerably more durable, and make more power than aluminum blocks of the exact same spec because they stay more true under high power and loads. no other engine is nearly as robust for making extreme power for long periods of time. if you might have worked on one of these engines you'll understand. in street trim i've seen these engines make upwards of 1000hp natrually aspirated to the wheels through an automatic on 94 octane pump gas. on 116 octane fuel with turbos, over 2000hp has been done. almost all the fastest landspeed cars with pistons use hemis. all the top fuel drag cars use hemis. what else would i want to use?

[seve7]

Originally Posted by tuRBy

that would be an insane amount of fun, id use twin T51R-SPL - imagine the Jet sound on 2bar lol

my ideal RB, i'd go for

Custom 2.85L stroker with 86.5mm bore
Higher compression [the highest to safely run 2.4bar on VP import]
RRR block
dry sump oil system
racing spec water pump made to fit
T51R-kai or spl
10 or 11,000 rpm head/cams
direct port Nitrous to spool fast at low rpm, at W.O.T
titanium inlet manifold, intercooler, piping and exhaust etc
paddle shift sequential like the new R35GTR
the current best Motec ecu

Always run on VP import race fuel, switchable 99octane map when on long journeys.

everything i could change to carbon or titanium, i would.

£££,£££.££ !

just wondering why the titanium intake and intercooler? i'd figure if money was no object a copper intercooler would be where its at. and i'd have a crazy custom polymer intake with variable runner length. im all about an electric water pump they are free horsepower. i'd also run the alternator off the drive shaft instead of the engine. and x2 on the motec. i'd have 3 egt guages in each runner as well as a wideband o2 sensor for each.

[R.I.P.S NZ]

Originally Posted by seve7

haha useless engine? its still the most powerful racing engine on the planet. the aftermarket iron blocks are considerably more durable, and make more power than aluminum blocks of the exact same spec because they stay more true under high power and loads. no other engine is nearly as robust for making extreme power for long periods of time. if you might have worked on one of these engines you'll understand. in street trim i've seen these engines make upwards of 1000hp natrually aspirated to the wheels through an automatic on 94 octane pump gas. on 116 octane fuel with turbos, over 2000hp has been done. almost all the fastest landspeed cars with pistons use hemis. all the top fuel drag cars use hemis. what else would i want to use?

What you say is true and I'm sure they are a cool engine but imagine what could be done with jap technology in a big cube engine.

Your big street/strip hemi's don't make alot of hp per cubic inch, even your 2000hp 550ci motor is only 3.6hp per ci, our usual fully streetable RB30's run between 5 and 6 and some more street/drag orientated run 7hp+ per ci.

Even if you went with a bullet proof, pump gas, street tune with a jap tech 550ci that could give 2750-3000hp (5hp/ci) with ease, in fact, wastn't there a blown 4 liter toyota V8 powered kit car that was street legal in the US with around 3000hp a few years back, sure I saw it in some magazine, looked sort of like a big version of an ultima too.

Your car sounds great, and hats off to you, lets see some pix and video, but beware if the japs ever put their minds to building some big cube engines!!!

Rob

[seve7]

little known project in the late 60s at chrysler was the doomsday project. no, im not joking thats the actual name. its was a 426ci hemi with dohc per bank. rumors are it made 800+hp in the neighborhood of 9000rpm in street trim. this was the next big engine that didnt make it to nascar after hemis were banned and the gas crunch started to hit.

no doubt the jap engines are great, but the problem with them lies in the rod bearing and main bearing area. theres just not enough bearing area. hell even on the nitro coupe hemis there isnt enough area, aluminum rods are used not because they are light, but because the aluminum is soft enough to act as a slight shock absorber. same with the main bearings, they are made out of a softer metal to absorb some shock. and as far as i know, i think this is the current limiting factor on the super high horsepower supras in the states they make so much cylinder pressure they are blowing the oil out of the bearings. also the main caps are enormous on these engines very deep and cross bolted, way larger than on any jap engine i've seen. although one thing i do like about jap engines is on the ones i have worked on they all have an main girdle instead of caps.

one very over looked engine is the quad 4 from gm, it was a dohc 4 cylinder found in some very mundane cars from gm in the late 80s/early 90s, but i believe oldsmobile set the 4 cylinder land speed record with it somewhere around 280mph. iirc a few of these 4cylinders went over 1000hp.

i dont know how much you guys have heard about gm's new ls9 v8 for the zr1 corvette. but i think its in the neighborhood of 635hp from 6.2L i think it even gets roughly 25mpg on the highway. all while expecting 100k mile reliability. which is a lot, i know on all the turbo jap engines i've rebuilt they all seemed pretty tired 80 with basically nothing left of the cylinder hone, and well as piston rings that are trashed. imo the 4g63 was the worst offender. the toyotas werent bad, but were also on their way out. other than a few teething problems when the new genIII gm v8s came out, there is no engine that even comes close with keeping a cylinder hone in good condition. no joke i've taken apart ls1's with over 100k on them apart to find an almost new looking hone still in the block.

[GT-R Glenn]

Hello this is Mr Zr1 development team manager, am I speaking with Mr Lotus uk ?
I am , ah great, I need some help developing our new engine, yes I heard you can get more than 2 valves per cylinder into the head ?
You can , great , how do we do it ....Could you please help.

Whats the engine name on the side of all the IRL cars again ?

Why are you conparing longevity of a atmo 6 litre v8 with a blown 4 cylinder?
How many atmo Jap engines have done in excess of 400,000 kms ... ?


Tell you what seve7(balesteros ?)You turn up in your iron blocked 10 litre 1960's designed V8 powered GTR and Ill turn up in my ,lets say 700hp SUper GT and we can race over the kopu hikuai rd ....
Who do you think would win ?

Rob theres a car in oz with a Lexus engine that runs 6's not too shabby I thought.

[seve7]

ouch when did this turn personal?

[GT-R Glenn]

lol
Its not...
1500cc F1 engines that make 1300hp are not too shabby in the "worlds most powerfull engine" debate, and they run for more than 10secs between rebuilds ...
Anyway, I thought we were talking about engines to put in Goddy's.