$350 Turbo made 253rwkw @ .9bar

[BOOSTD]

Our engines are not able flow that much air at 1bar, there is to much restriction, you will be looking at 20 odd psi to make that power which also is inside 70% efficiency.

[RS500]

BOOSTD,

correct, 45lbs/min would give your approx. value of 405-410bhp, although, this is not to be confused with rear wheel hp.

therefore, 405hp (302kw) at the flywheel would roughly work out to ~250kw at the wheels after power loss through the drive line.

so again, you are running your turbo at 105,700 rpm and 55% efficiency.

[BOOSTD]

Standby I`ll find were I read it.

[BOOSTD]

Julian Eger (21st Century Performance) States that lb/min times 9 equals engine hp, but, is usually closer to hp at the wheels. My Dyno graph does reflect this. I'll get the work scanner and post it for you to nit pick.=)

[RS500]

i'm not nit picking dude, i'm just stating a fact.

air-flow (lbs/min) x 9 = engine hp but it cannot be close to rwhp.

[BOOSTD]

Some more info

http://www.skylinesaustralia.com/forums/sh...Compressor+Maps

[Jay95R33]

Damn - it comes on boost hard !!! No wonder you've got problems with traction

[RS500]

well written dude.

[BOOSTD]

The blue line is with my with my sealed Air box, which also had a 3" cold air feed. Mik said it would make more power without it! I disagreed......yep I was wrong 9rwkw increase without it up top and power every where else.

I did all of the tuning myself on the road with a narrow band sensor. You can see at around 140kph(~max torque) the extra fuel that is needed to keep pinging under control. Also tuned on the rich side 11.5- 11.8:1.--> More power to be had....Water injection is my next project.

[EnricoPalazzo]

Are u goin to build your own kit, or just use a hose and put pin pricks in it? Aquimist kits from MRT are excellent. Look into that Matt!

[BOOSTD]

no no no, I'm am very interested in the waterspray kit that these guys have available...

http://www.aquamist.co.uk/ .

[EnricoPalazzo]

Well they aer very good. U should be happy. Just watch the price

MRT rally sell them online.

[BOOSTD]

Ok here is my graph again, I deleted it by accident.

[Jay95R33]

Boostd - What's your account details so I can deposit some money in there for one of these turbos....

j/k

[BOOSTD]

more satisfying to do it yourself =)

[BOOSTD]

All that info lost!!!!

Anyway for those who we visiting this threat....latest mods

exhaust 53.5mm

Comp has a groove machined in for surge reduction.

Also HKS wastegate has arrived

Has mad e before these mods 266rwkw Aim 280rwkw

Photos of latest mods to come

hmmmn ok so I can't load up any files...the server is giving me errors the length of my arm

[Guest Robo's]

Excelent stuff:)

I actually called a turbo place in Melbourne and he said they cant put the T04 without busting the Ceramic wheel. He said it cracks everytime they undo the nut.

Is this correct?

[BOOSTD]

Not sure what mean-The turbine is attached to the shaft....... it's not ment to come off. The turbo shop that did my balancing had a jig to hold the turbine while the compressor was unscrewed.

[Guest Robo's]

Maybe the turbine cracked as the shaft was being undone. Im not to sure, but i will find out some more. It was ATS.

[rbs13]

so, i have a rb20 with fmic, exhaust, boost controller, fuel pump and regulator.. i take my rb25 turbo to a turbo place and say hi i want a a to4 v trim comp wheel in place of the std one.. and the turbo snout machined/bored/what ever ya wanna call it out to 53mm.. then i bolt this turbo on and make 250rwkw at round 1bar boost simple as that? bearing in mind ill have to get injectors and remap and a new air flow meter.