Rb29 Wow!

[N1GTR]

lol...where did you hear that you Wally?...im sure that was only in your mind.

Im talking about non-obtrusive, quiet, unasuming, but very powerful stock looking and sounding cars. I hate driving my car...even the small distance from the shed to home (and you know how close that is). This car i could have easily driven around in all bloody day.

i didn't throw that RB30 bottom end in the tip to regret it...it was exactly that...rubbish.

lol, ok ok

Shouldnt you be calling the tip for me soon?

[BoostdR]

Exactly....it makes 10+psi @ 2500, hence the big torque early.

Some more details:

Crank is a custom billet 12 counterbalance job. Don't try to rev those RB30 cranks too high!

Rods are SR20. Don't sweat the R/S ratio. 1.5-1.65 has proven to be ideal/desirable for a 4 valver in the 1-9000rpm range.

Modern materials and rod/piston designs mean longevity is not an issue, and shorter rod is a stronger,lighter rod.

Pistons are custom.

Camshafts are Nissan OEM.

Turbos are currently Garrett -5's, (about to make way for a very slightly bigger set).

We have now have it tuned at 24lb and it makes 468kw with plenty more through the mid-range.

I'll post a new dynograph when I get a chance.

Lots of sneaky tricks in this one. I probably shouldn't have sold it after all.....

cheers,

Garrett -5's and 468kw ??? this must have been on an engine dyno...right?

Was the crank originally an RD28?

[JAGR33]

Garrett -5's and 468kw ??? this must have been on an engine dyno...right?

Power is at the wheels on 98 RON fuel...

[VB-]

i thought the limit of -5's was alot less? without being 100% familiar with 'dash fives', are they one specifc turbo, or are there different sizes? last GTR i saw running -5's was an R32, making ~425rwkw on 116 octane, and it appeared there was nothing more to give from the turbo side of things, unless there are bigger -5's?

[rev210]

you can stick the larger 0.84 AR turbine housing on

[R31Nismoid]

You're talking a motor with more dev work than most punters dream of

Being 2530's can make 440rwkw on PULP, and the -5s are similar enough (even though some here dont think so)... i can see how this is done.

[T04GTR]

yes i envy this motor...

[T04GTR]

ps.. who makes cranks for nissans in this country.. i know buster had one done for his a while back..

[Swiper the Fox]

yes i envy this motor...

its power is like electricity...you cannot see it...you cannot hear it...you cannot smell it...but boy you can feel it.

Dave, Ron Harrop can help you out with a crank...he is in Melbourne.

Edited January 12, 2009 by DiRTgarage

[T04GTR]

ahhh say no more.. lol.

[BoostdR]

ok, well .84A/R exhaust housings are not a 2860R-5 generic item, nor do they come with a matching exhaust outlet flange pattern...hello custom dumps

no comments on the RD28 crank???

[T04GTR]

no its a custom billet crank

[BoostdR]

I saw that comment thankyou.

RD28 diesel cranks are billet, and if stroked would be custom....the conrod diameter is larger than a 26 so easy to do

[R31Nismoid]

They wouldnt be .84 x2 with response like that

[BoostdR]

They wouldn't make that power on pump fuel without some enlargerment. The compressors simply do not flow enough air. Hence why I asked if it was engine dyno'd....since the best engineering shops will only tune this way. Torque can be measured to .1 ft lb which gives a very very good indication of cylinder pressures.

I wouldn't be suprised to see that type of response on a 2.9 from modified -5's, baby cams help aswell

[Drift Motorsport]

Top effort and top build!

I believe that this car is now for sale? 75k..... bargain.

[JFKGTR]

They wouldn't make that power on pump fuel without some enlargerment. The compressors simply do not flow enough air. Hence why I asked if it was engine dyno'd....since the best engineering shops will only tune this way. Torque can be measured to .1 ft lb which gives a very very good indication of cylinder pressures.

I wouldn't be suprised to see that type of response on a 2.9 from modified -5's, baby cams help aswell

Ben has tried more than 5 turbo combos on this engine alone, while logging temps and pressures.

You would be amazed at the power some of these little turbos can make.

As far as I know the turbos are off the shelf -5's.

.64 turbine housing.

I'm glad you assume the compressors wont make that much power.....apparently it is actually the turbine that is getting close to the flow limit.

Same turbos on a F355 Ferrari also make over 450kw @ wheels on only 16psi (different dyno).....

My own track car with 2.6 engine and -5's makes over 400kw @ wheels on pump.

This engine is the culmination of 8 years of Race Pace RB development.

It was built as a challenge for a stock appearing/mannered engine to have monster power and response.

In the last 12 months it has seen over 10,000km of road use and various track/tarmac rally events and is still going strong.

I want it!

Edited February 19, 2009 by JFKGTR

[JFKGTR]

Seeing as the car with this engine is for sale, I might as well spill some of the 'Ben's secret specs'

Custom billet crankshaft 84mm stroke

Custom titanium rods

Custom forged pistons 86.5mm bore

Custom chamber/port shape

Variable cam timing

12 injectors

Thats the basics, Im sure there are lots more tricks in there.

Edited February 19, 2009 by JFKGTR

[Antimatter]

I cant confirm it - but have heard rumour that the was some deal done too.

Something about soul and sold to the devil. My personal theroy is that he is the devil - or at least the dark son of rajab of RB's

On the subject of secrets - I want to know how he keeps his shirt so clean?

[PurpleR32]

On the subject of secrets - I want to know how he keeps his shirt so clean?

If I was a dirt or grease molecule...there is no way i would want to get him angry by messing his shirt!

He clearly scares them away