Should It Make More Power.

[subzeroR33]

Ok guys, i have a mate that has spent nearly $40,000 on his RB25. It has a bit of shit done to it this is the list

Areas pistons

Cunningham rods

Metal head gasket

Head work

Deaek bottom end and bored

Blue print and balanced

N1 oil pump

N1 bearing kit

GT 35-40 garret turbo

Massive FMIC

Custom plenum and throttle body

MSD DIS4 ignition system

Ltx 12 microtech.

Now it was dynoed at 360 rwhp at 19 psi, i thought with all that work it would make at least 450rwhp plus.

I notice alot of other Skylines with not much work done coming very close to 360 rwhp.

Is it time for a new tuner or is that it.

What do you think.

[bennyfy]

should be more. However it still depends on his engine condition.

[subzeroR33]

should be more. However it still depends on his engine condition.

In what way, you mean the age of it.

It was rebuilt in 2005.

[R31Nismoid]

There are far to many unknowns here

[subzeroR33]

There are far to many unknowns here

yeah like what.

[dontfeelcold]

sounds like your mate has been ripped off. Not by the amount of power he is making, but for the small list of parts you have shown. I hope that $40k covers a hole bunch of other things.

[subzeroR33]

sounds like your mate has been ripped off. Not by the amount of power he is making, but for the small list of parts you have shown. I hope that $40k covers a hole bunch of other things.

Well yeah thats what i think, thats a shit load of money.

But alot of work has gone into it.

There is not much more.

Or forgot these.

ARP stud kit.

Coil pack

1100kg exedy twin plate

1.15 A/R exhaust housing.

Mate it adds up pretty quick.

Labour was a few thousand.

Edited February 10, 2007 by subzeroR33

[Cubes]

Head, Cams, valve springs, fuel, compression, leakdown, exhaust, cam timing, catalytic converter, tune and................ the dyno. What are others doing on the same dyno?

Try another tuner see what they think may be up with it....

[subzeroR33]

Head, Cams, valve springs, fuel, compression, leakdown, exhaust, cam timing, catalytic converter, tune and................ the dyno. What are others doing on the same dyno?

Try another tuner see what they think may be up with it....

It still has standard cams.

But i think it should be better than 360rwhp.

[Cubes]

None the wiser.

[subzeroR33]

None the wiser.

You see some guys stick on an after market turbo up the boost, power fc and they are making good power for 1/4 of the price.

[Cubes]

Then they usually do cams, the plenum possibly exhaust manifold already done.

Modifications done in stages. When everything has basically been done at once its just too difficult to know whats wrong with the car.

It may simple come down to the tuner, a stuffed cat, a crappy exhaust. Who knows, we don't because maybe you don't either.

If you were the owner you could say ... yes its running a decat, 3.5" straight through muffler this that etc..

[hayden49]

lol $40,000k? for only 360rwhp?

HAHAHAHAH your mate has been owned big time..... does he not know how to do anything himself?

If he had 40,000k to spend on an engine he should of bought a twin turbo jza80 supra and spent the money to have an 800hp monster but each to his own i guess....

I have spent like 2k on my car for engine mods and am making in the vicinity of 260rwhp.

I know that to go up i must get a new turbo, computer etc but i would still want to come out f*cking short of 40,000.....

I hope that 40,000 inlcudes bodykits, wheels etc etc....

[_8OO5TED_]

360rwhp? how much boost?

you could net close to 400rwhp on approx 20psi with a stock internal RB25 with that snail....

[markimak]

wind up my GTR boost and ill see that hehe.

[bigcarl]

my rb25det is making 274 rwkws at 17psi and 346rwkws on 24psi and im running gt3040 600hp garrett,spent half the money you have and thought that is alot! post up your dyno sheet, your power curve might give an insight to what is robbing you of power!

[R31Nismoid]

lol $40,000k? for only 360rwhp?

HAHAHAHAH your mate has been owned big time..... does he not know how to do anything himself?

The parts listed are a fair cry from 40k. Doesnt even come close to knocking over 20k

I'd say the figure of 40k was including things like rims, suspension, body kits etc etc etc etc.

But as cubes said (i did not have the time earlier), they are a LOT of things missing.

Even the turbo spec iteself.

All thats been listed is about 1/2, and its not enough detail for the items that are there, let alone whats missing

Maybe the FMIC has pressure drop, maybe the head gasket a whopper and its dropped the comp ratio substancially meaning mroe boost would be required.

Subzero, get your mate to signup and give the FULL detail and history, no-one can really help unless there is basically a thesis on what parts are there, whats been done, whats been tried.

What has not been tried etc etc. Its a lot more detailed that just listing some of the parts that have been used.

Simply saying a car isnt performing and asking for answers is like asking how long is a piece of string.

Ps. im moving this to Forced Induction.

[Adriano]

did 40k include buying the car? I dont see how a shop will let you spend 40k on the motor and not put cams in it.

[T04GTR]

its a 3540. bleh.

cams and headwork. also a plenum that doesnt work.

ive a stock 26 with a t04z. only makes 410hp atw. on 20 pound lol.

cams and headwork. and posibly the ebay exhaust manifold.

where as my old 26 with mild cams and portwork made 440hp atw with a t04e on 1 bar. with a exhaust manifold i made.

[sh@un]

yeah- somethings up here

my standard turbo'ed 32 GT-R made 350rwhp with only a cheap boost controller, a microtech, and a full 'zorst.