DYNO RESULT: T517Zs on GTR

[whatsisname]

Yeah very true Andrew, it's not going to make much of a difference.

I just rang Simon (the guy I mentioned above) and he said that it's possible to make at least a 10hp gain just by using light weight pistons and rods. 10hp isn't much, but it all adds up.

[yurigtr]

add another pair of gt-ss into the list....will get them in asap for the comparo

[JAGR33]

meshmesh- yeah we'll have to twist Nigel's arm to get this going I think!!! It would be more accurate if they are done on the same dyno and same day....

Merli- be more than hapy to see your beast on the dyno!!!!

sub- fantastic!!! what sort of time frame you looking at having your car ready????

Anybody out there with the Apexi AX's on a GTR (in Melb)???

[R31Nismoid]

meshmesh- yeah we'll have to twist Nigel's arm to get this going I think!!! It would be more accurate if they are done on the same dyno and same day....

Yeah, it'd be a lot better.

Same dyno, same day, same air temps etc etc.

The list goes on.

[NRB]

I think NRB has 2530's aswell??

Bingo

I've got a 102,000km R32 running 2530s, PFC, 660cc injectors, cam gears and a Super Drager exhaust. I'd like to compare the 32 to the 33 brigade

[Merli]

Bingo

I've got a 102,000km R32 running 2530s, PFC, 660cc injectors, cam gears and a Super Drager exhaust. I'd like to compare the 32 to the 33 brigade

Sounds sweet!

[JAGR33]

NRB- your more than welcome.... Will keep you posted with when this is going to happen.....

[meggala]

nice to hear wen tfor a ride in jacks car hmmmmmmmmm why did you do that man.

veyr very nice

I'll have to put up with my egg beater for now

[vspecv]

hey jack,

i had the t517z-10 on my bluer34 and it made 345kw on bens dyno, i think at 1.3.

i had t517z-8 on my silver r34. in my opinion the 8s are much nicer, im surprised u went with the 10s, u seem to be concerned about lag,then why the 10s, if u had a built engine and were aiming for bigger numbers than 350 i would understand.

i think if u drove a 8cm car , u may spew u went with the 10s.

ben may still have the dyno sheet for the apexi ax turbs, he tuned one for me about 2 years ago.

[jezzrrr]

hey jack,

i had the t517z-10 on my bluer34 and it made 345kw on bens dyno, i think at 1.3.

i had t517z-8 on my silver r34. in my opinion the 8s are much nicer, im surprised u went with the 10s, u seem to be concerned about  lag,then why the 10s, if u had a built engine and were aiming for bigger numbers than 350 i would understand.

i think if u drove a 8cm car , u may spew u went with the 10s.

ben may still have the dyno sheet for the apexi ax turbs, he tuned one for me about 2 years ago.

Did yo have any trouble with the turbos/oil temps ?

What sort of power difference with the T517Z 8's vs 10's ?

Jeremy

[JAGR33]

Hey Dean,

I didn't know about the two sizes until after I bought them!!!! Oh well, you live and learn I guess.... Was there a considerable difference between the 8cm and 10 cm???? As far as response and power???

[JAGR33]

Just looking at JMS's old R33 GTR drag car, and they're claiming the car made 381 rwkws on 1.3 bar, using T517Z 8cm low mount turbos.... Heres the link to the page which also provides a dyno graph....

http://www.japanesemotorsport.com.au/whiter33gtr.html

How do they get so much power out of these turbos on 1.3 bar and stock motor???

Does this seem right???

[Guest INASNT]

Just looking at JMS's old R33 GTR drag car, and they're claiming the car made 381 rwkws on 1.3 bar, using T517Z 8cm low mount turbos.... Heres the link to the page which also provides a dyno graph....

http://www.japanesemotorsport.com.au/whiter33gtr.html

How do they get so much power out of these turbos on 1.3 bar and stock motor???

Does this seem right???

every car jms has had they have bullshitted their power. I remeber they were saying their rb25 was making over 400rwkw with stock internals and living

[meggala]

jms dont bullshit their figures the dyno they use does read high but they dont use normal pump fuel they use some pretty exotic fuels for their big power runs.

meggala

[Sydneykid]

I remeber they were saying their rb25 was making over 400rwkw with stock internals and living

I have seen 3 of their cars die, smokey deaths at that. :wavey: But hey when you have a warehouse full of spares, does it really matter? At their cost, it probably works out cheaper to keep replacing standard engines than building a decent one. :wassup:

[JAGR33]

So in other words if I put some '****tail' fuel and advance the timing, should I expect a considerable difference in power (in excess of 350rwkws) without raising boost???

[vspecv]

Hey Dean,

I didn't know about the two sizes until after I bought them!!!! Oh well, you live and learn I guess.... Was there a considerable difference between the 8cm and 10 cm???? As far as response and power???

i dont think there was a huge difference with power with 8s and 10s, but the 10s were a bit laggy, a bit 2540 ish. i didnt like them

[jezzrrr]

Just looking at JMS's old R33 GTR drag car, and they're claiming the car made 381 rwkws on 1.3 bar, using T517Z 8cm low mount turbos.... Heres the link to the page which also provides a dyno graph....

http://www.japanesemotorsport.com.au/whiter33gtr.html

How do they get so much power out of these turbos on 1.3 bar and stock motor???

Does this seem right???

Thats one hell of a dyno graph - very nice, I am asking the same question too, how does that engine hold together in stock form ?!

[Emre]

Posted by Jack  

Just looking at JMS's old R33 GTR drag car, and they're claiming the car made 381 rwkws on 1.3 bar, using T517Z 8cm low mount turbos....  

How do they get so much power out of these turbos on 1.3 bar and stock motor???

So in other words if I put some '****tail' fuel and advance the timing, should I expect a considerable difference in power (in excess of 350rwkws) without raising boost???

More boost = More power

More timing = More power

Too much of either = Detonation = Risk of engine failure.

You can phuck an engine with shitloads of timing at low boost, or shitloads of boost with low timing.

Decent fuel > Pump fuel

Timing and boost with decent fuel > Timing and boost with pump fuel

Power output with decent fuel > Power output with pump fuel

Cost of decent fuel is minimum $5 per litre = $100 per 20 litre drum

This will give you 40 litres of fuel in your tank = 2/3 full, if mixed to 1:1 ratio.

Total cost of fuel in tank = $120

Running 1.3 bar with decent fuel @ cost above = Pointless and IMO stupid.

To summarize,

Guys @ JMS or any other workshop around the country (yes, including the guys from Perth) do not have a secret, or a trick unknown to others, to make a lot more power than Ben @ RacePace or Nige @ ICE. If you want more power, go and see the boys and they will give it to you.

The JMS car has done 11.2, i did 11.4

JMS car had 385 rwkw, i had 330 rwkw.

The mph on JMS car is not known, i did 124 mph.

There is not much point in delving into matters any more than that.

[JAGR33]

Hi Emre,

Its not that I want more power (not yet!!), I was just stating that how the JMS drag car can get 381 rwkws on 1.3 bar boost?!?!?!?