N/a+t Power Results - N/a +t Turbo Conversions Only

[DaGr81]

If your having too much knock problems even with a good tune install a water methanol injection kit cheap insurance and higher timing + you won't blow the internals too quickly, my na+t two years still going hard! Rebuild it later

[WYTSKY]

entice me dagr81..... explain a bit more about water meth injection:P and price? im always after a bit more insurance that the engine is going strong

[DaGr81]

Will post a link, or type boost cooler into search and one guy has a full write up on it, the kit is 648 and should only take 2hours to install and basically sprays a mist as boost rises to prevent detonation as the load increases so does the mist, you get a 2l tank which you mix 50% methanol and water the guy who did the write up says 2l lasts a full tank, so I'm going this path soon will post my own results later

[WYTSKY]

sounds very interesting, post link when you can, ta.

[lammy426]

Bhp any different to hp? Because 310 hp is why wytsky got of bhp is different than that would be higher number

I'll post my results when I get home it's too hard from the iPhone

Ok now that ive done my research the brits measure power output at the engine not at the wheels so your 315bhp is around 235kw at the engine there's no way you'll make more than 220rwkw on an old stock r33 turbo in other words your rwkw figure is around 185rwkw

And now that I've seen the graph it's actually 185rwkw so 250hp at the weels so your down 60hp on him + he's got 4wd so that's at all 4 wheels

brits measure in both fly and wheel/hub and mine is 315bhp at the hubs which is 378 at the fly on a standard r33 gtst turbo at 10.13 psi boost,i don't know where you did your research but its wrong,my 1st dyno was 301bhp at the hubs at 8psi boost and i still have meth/water to put on but i have not had the time yet

Edited January 9, 2009 by lammy426

[DaGr81]

Whatever everyone knows the r33 stock turbo will shit itself at 220rwkw and sometimes quicker, just saying your graph is saying it's flywheel hp anyway enough said not gonna argue about it but just going off your graph, later!

Ps I don't know anyone making 224rwkw with 8psi on the stock turbo... Do you? That's why your wrong!

Edited January 9, 2009 by DaGr81

[lammy426]

Whatever everyone knows the r33 stock turbo will shit itself at 220rwkw and sometimes quicker, just saying your graph is saying it's flywheel hp anyway enough said not gonna argue about it but just going off your graph, later!

Ps I don't know anyone making 224rwkw with 8psi on the stock turbo... Do you? That's why your wrong!

they use their old paperwork on a new dyno,and the inlet plenum makes 40/50 bhp more than stock and electric fan gives 3/5bhp,cold air forced fed, and 224kw is probably on a low comp engine an ordinary gtst,i've been a mechanic for over 30 years,but obviously you know more,by the way there is a post on skylineowners.com which states thor racing say its fly bhp but its really hub bhp. i want to see what n-dawg comes up with if he gets 10 psi he should get around 300/310 at the fly bhp that is as a mate of mine as, and a member on here called shawny <a href='http://www.skylineowners.com/forum/showpos...mp;postcount=23' rel='nofollow' target="_blank" onclick="java script:urchinTracker('/outgoing/www_skylineowners_com');">http://www.skylineowners.com/forum/showpos...mp;postcount=23</a> http://www.skylineowners.com/forum/showpos...mp;postcount=21 http://www.skylineowners.com/forum/showpos...mp;postcount=24

Edited January 9, 2009 by lammy426

[DaGr81]

Well according to you, your gts+t makes 301bhp which is 224rwkw so it can't be an low comp motor

[DaGr81]

By saying you make 378 hp at the engine is even worse your saying that you make only 22hp less than what a 400r gtr makes when it rolled out of the factory... Either way I have not seen plenums make 37rwkw (50hp) on a engine which only has minor bolt ons and a tune.... Everyone comes up with the excuse "I've been a mechanic for bla bla years..." give it a rest if your a mechanic why didn't you do your own install...

Enough said cya later key board warrior

[lammy426]

By saying you make 378 hp at the engine is even worse your saying that you make only 22hp less than what a 400r gtr makes when it rolled out of the factory... Either way I have not seen plenums make 37rwkw (50hp) on a engine which only has minor bolt ons and a tune.... Everyone comes up with the excuse "I've been a mechanic for bla bla years..." give it a rest if your a mechanic why didn't you do your own install...

Enough said cya later key board warrior

i did do everything myself except the mapping and the alli welding,if i had the facilaties i'd do it all,i've watched sau for a few years and you are a muppet you have not read the posts properly,all i want to do at the end off the day is help skyline owners to get the most out of thier cars,if you continue to disbelieve me and nobody cares what i have learned over years of trial and error. and the cars been running 300+ath for 2 years + at the moment

[dori34]

wytsky, are you using the standard rb25de gearbox or did you change to a 25det?

[WYTSKY]

well, its actually a gts4 box, apparently they are as good as the gtr's, so I have heard....

and I got the car dynoed, need to upload the sheets, got 220-230rwkw. but had boost spiking with my bleed valve so getting a gizzmo. we also think my exhaust is being a little restirctive because it has a large dent in it.

[dori34]

nice..

post up the sheet when u can

gts4 (turbo or na) box ?

[WYTSKY]

in 33 gts4's they only came out non turbo. but yeh, its a 33 gts4 n/a box.

[lammy426]

wytsky, are you using the standard rb25de gearbox or did you change to a 25det?

i'm still using a standard rb25de box with an r32 gtr exedy clutch,for about 2 years and its been ok so far

[WYTSKY]

Here is the current dyno.... as you can see, there is pretty bad boost leak between about 4500-6000 ...1.3 bar is about 17psi i think?? fair bit for an n/a.... im not happy with, especially considering it was making more power then this on a solid 14psi with no creep...

the green is before, and the red is after, so there was a little more poke down low before, but uptop theres a little more now.

ordering the gizzmo next week, then back on the dyno, testing exhaust, and bits and pieces. so hopefully we can get the last 1500 rpm to point up high and get a good figure... instead of looking like an old man's set of knackers

Adam

[dori34]

i thought your car had around 650nM of torque, how come its peaked at 378.

does it lose traction easily in 1,2,3,4? lol

[WYTSKY]

hehe, nar different dyno, different formula and measurement of working out torque... he believed it was quite alot for the power the car is making.... I'd love to know the conversion formulas between dynos if they exist or any1 knows.... so I can compare between.

[N-DAWG]

Model - R34 25GT Sedan

Engine - RB25DE NEO

Modifications / Parts Used - RB25DET Factory Exhaust Manifold, R33 Series 2 Turbo, JJR Front/Dump Pipe, Custom 3" Mandrel Bend Catback system with 5" canon tip, Magnaflow Hi-Flow Cat, R34 GTT Injectors, Walbro GSS342 Fuel Pump, Monsta Performance FMIC Kit, Turbo XS Recirculating BOV, Apexi Power Intake Air Filter, custom speed flow oil and water hoses with speed flow fittings, extra silicon bends (90deg short silicone bend and 90deg long silicone bend), new set NGK Iridium spark plugs, heat shielding, factory piping (turbo inlet, hot pipe from the turbo), oil pressure switch adaptor, T3 foot gasket.

Engine Management Used - GReddy eManage Blue with optional Injector and Ignition Harnesses and Ignition Signal Adapter for R34.

Fuel Used - BP Ultimate 98

Boost Used - 7 PSI (straight off the RB25 Actuator)

Dyno Tune Results - 211.9HP

Misc - New coilpacks will probably net a bit more gain, fried one same day after having conversion done. Splitfires on the way. Also been told that the dyno used tends to read a lot lower (10-25kw in some cases) but I'm not going for big power figures just yet. Auto transmission + N/A+t = not so great, will definitely do the valve body upgrade. Also on an R34 i advise changing the intake plenum/manifold.

All up it actually took more than 29.5 Hours charged, the workshop put extra labour in here and there on their own time (this also included after sales service such as temporary coilpack replacement and additional tuning after fitting the BOV). If another workshop done the same job it could easily be a lot more.

Spend extra on a decent FMIC kit. I got mine very cheap (lucky ebay bid) but the piping was pathetic and added to the install time, not to mention otherwise unnecessary cutting of the black plastic grill in the front bar simply so the modified piping could line up.

Splitfire Coilpacks will easily add $640 to the cost as well, but I see things like the coilpacks and spark plugs to be a maintenance thing anyway. We all know that R34 coilpacks don't last forever. Note that coilpacks aren't fitted yet...probably won't know what extra power it may add either, but people seem to report that they pull a few extra KW's with them.

Costs - Parts: $2,800-3,000 Approximate Labour & Tuning (29.5hrs labour incl. 4-6 Hours Dyno Tuning and install of the eManage): $2600.00

Dyno Graph

[lammy426]

is this at the hubs,wheels or fly. i hope its the hubs