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428rwhp R33 Gtst On Stock Bottom End

bren

By bren,
in Engines & Forced Induction

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bren Contributor

bren

Posted
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We got our Skyline back from our tuners on Friday and took it to a airfield track on Sat for a shakedown. The cars now running 500bhp at 1.5bar, 428bhp @ wheels ;)

Check out that power curve, awesome :notworthy

skyline428small.jpg

skylineengine1.jpg

Some footage from Elvington on Sat. Bear in mind Im out for a bit of a prat around and to find the limits of the car, Im not going for ultimate lap times:

Right click and save as, 10.3mb

What 500bhp does to a poor unsuspecting passenger. Be warned LOTS of bad language:

Right click and save as, 6.8mb

Spec:

Greddy plenum

Greddy intercooler

Tomei Poncams

Trust 1.8mm head gasket

Power FC

6x 740cc Nismo injectors

Greddy TD06-25G turbo

300ZX afm

Apexi air filter

Greddy radiator

Apex oil cooler kit

Denso plugs

Nismo fuel pump

Apexi AVCR

OS Giken twin plate clutch

Apex 2 way plated diff

K-Sport coilovers

K-Sport 356mm 8 pot brakes

K-Sport tc and camber arms

Apex subframe locking collars

Cusco/Nismo strut braces

Standard bottom end

1.5bar - 501bhp @ fly, 428bhp@wheels

post-9294-1154947993.jpg

post-9294-1154948020.jpg

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Good result... the videos are amusing. ;)

Interesting venue where ur out at aswell. Looks almost like dirt hehe

I reckon if you spend a bit more time on the dyno there is some decent mid-range to be found there.

(if im doing the numbers correctly :))

You have around ~230rwkw @ 5500rpm

And then only ~260rwkw @ 6000rpm

Here is the smaller -20g for comparison

http://i7.photobucket.com/albums/y285/WHITER33/300.jpg

I reckon you can have a lot more in it.

Just a question, on the graph its making 1.5bar from before 3400rpm, is that an error or something? Its a little small for my eyes ;)

bren Contributor

bren

Posted
  • Author
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Good result... the videos are amusing. ;)

Interesting venue where ur out at aswell. Looks almost like dirt hehe

I reckon if you spend a bit more time on the dyno there is some decent mid-range to be found there.

(if im doing the numbers correctly :))

You have around ~230rwkw @ 5500rpm

And then only ~260rwkw @ 6000rpm

Here is the smaller -20g for comparison

http://i7.photobucket.com/albums/y285/WHITER33/300.jpg

I reckon you can have a lot more in it.

Just a question, on the graph its making 1.5bar from before 3400rpm, is that an error or something? Its a little small for my eyes ;)

The graph is correct, the car runs 1.5bar from 3500rpm to 7500rpm :O

Its an airfield made up of a mixture of concete and tarmac. Theres loads of run off so its nice and safe to learn the capabilities of the car. We are trying to get it booked into a 'proper' track this week.

How would we get more midrange without a boost spike? The power delivery at the moment is excellent, very progressive and predictable. The car would actually be very usable for drifting as it is so responsive and has so little lag. Or at least it will be once I get rid of the Hicas.

We are hitting a bit of a brick wall at the top end, more boost just moves the entire power curve to the left a bit but peak power doesnt change. Any ideas? We think maybe the throttle body is a restriction.

bren Contributor

bren

Posted
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Its taking a very long time to make power if its holding 1.5bar for over 2000rpm before the solid power arrives.

Whats the exhaust like? 3.5" or more?

Hrm... the tuning experts will know more :whistling:

It runs a 3" quiet exhaust and we have plumbed the external wastegate back onto the down pipe so we can pass the track noise restricitons. I have a more free flowing exhaust on order and we are looking at a mini silencer for the wastegate so we can seperate it from the downpipe :3some:

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

3" with a plumbed screamer...

I reckon thats the problemo right there.

I lost HEAPS of response when i had my screamer plumbed in as i only had a 3" exhaust.

For that power you really need 3.5 or better yet a 4" :whistling:

HypeR33 Mentor

HypeR33

Posted
Posted

Nice work :whistling:

Looks like there is still alittle bit more I can get out of mine then :kiss: 1.5bar at under 4k? thats nice...my GT35R isnt on full song until mid 4k rev range

post-15008-1154961804.jpg

might have to remove the plumb back pipe on my screamer and see what the results are like then Ash :3some:

Cheers

JB :laugh:

mass_iv Grand Master

mass_iv

Posted
Posted (edited)

dude that thing looks like a weapon..... now why cant i get power and response like that out of my setup!!!! :whistling:

also justa a question, u still running standard gearbox???

Edited by mass_iv
bren Contributor

bren

Posted
  • Author
Posted
dude that thing looks like a weapon..... now why cant i get power and response like that out of my setup!!!! :whistling:

also justa a question, u still running standard gearbox???

Standard gearbox but its starting to crunch into 4th and 5th. Not sure if its a syncro or clutch release issue.

bren Contributor

bren

Posted
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Posted
Bren,

Out of interest, what size is the exhaust housing on the TD06-25G?

Greddy (Trust) list 8cm, 10cm and 12cm housings for the TD06.

Cheers.

Its known as a 25G, I dont have any more info than that to hand Im afraid.

benm Grand Master

benm

Posted
Posted

Either the passenger has spent his entire life driving excels or the difference between power delivery from the driver and passenger seats is way different because ~300kw feels like im driving a bus. Then again, when it comes to braking for a corner you suddenly realise how fast you are going.

Who's job is it to realign all the cones when somebody has an off?

bren Contributor

bren

Posted
  • Author
Posted
Either the passenger has spent his entire life driving excels or the difference between power delivery from the driver and passenger seats is way different because ~300kw feels like im driving a bus. Then again, when it comes to braking for a corner you suddenly realise how fast you are going.

Who's job is it to realign all the cones when somebody has an off?

He was at the track day in a Pugeuot 106 if thats gives an indication of his expectations :)

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