Sau-sa Dyno Day #2

[Dohmar]

If you are in no dire need of your four wheel drive system to work as sharply as it did from the factory then keep going with your existing transfer case. Like every other part of the car they wear out, and the more power, the faster

We have several rebuilt cases that we had done (new frictions and steels) that we swap out from time to time on the cars. The parts are available from Nissan

Nah, I'd rather refresh it to brand new standard as part of the general rebuild... As soon as I can get a price from ya, I'll check my calendar and see when I can get it done

-D

EDIT- This is the link I was reading about xfer rebuilds and the corresponding prices for the parts http://www.skylinesaustralia.com/forums/R3...amp;pid=5227996

[SLED]

Ben, David has a PowerFC - in fact it is the R32GTR one out of the R that was written off in Targa Tasmania a few months ago (as his old one shat itself). And yes, it is tuned rich as FCUK atm while he fully runs in the motor. Mind you he is not out for HUGE power, as he has chosen response rather than massive numbers - he is running a pair of HKS 2530s - my favourite turbo

Andrew, overly rich mixtures can offer cooling & lubricating advantages but too much fuel can have adverse effects at the same time.

Excess fuel wash = goodbye critical bore cross hatching & hello glaze city..............not to mention that ceramic cats don't take too warmly to bucket loads of unburnt fuel.

[Nightcrawler]

Yeah I know Pete - I am not the tuner (Martin is) and I am not the workshop who did it (Manta is - and Steve has built a cubic SHIT-TON of wicked cars). I am sure they know what they are doing.

That said, David's power figure was not bad for low boost and everything taking it nice and easy on a full run-in tune. About right with little 2530s I would have thought - they only start getting up into their stride when they hit 18-20psi - I believe his tune was done at 12psi for now.

[Martin Donnon]

For those that were worried about what they saw coming out their exhausts on the day (black trails etc) there were very few if any cars that we could determine on there as being overly rich. A couple had a little too much fuel in the midrange, but nothing was actually drowning in its own fuel as you normally see from time to time at dyno comps. The black soot blasting out of the exhaust systems is normally the residue of cruising around being hammered out of the pipes by some high rpm airflow and heat. Black smoke on the dyno is normally a sign of a very gentle driver

[Madaz]

didn't know that

always a wealth of information, thanks Martin

i know what your thinking Luke

[Brezza]

For those that were worried about what they saw coming out their exhausts on the day (black trails etc) there were very few if any cars that we could determine on there as being overly rich. A couple had a little too much fuel in the midrange, but nothing was actually drowning in its own fuel as you normally see from time to time at dyno comps. The black soot blasting out of the exhaust systems is normally the residue of cruising around being hammered out of the pipes by some high rpm airflow and heat. Black smoke on the dyno is normally a sign of a very gentle driver

cheers Martin for showing me your nifty calculation between the Dyno Dynamics and Mainline Dyno's

my previous runs on Dyno Dynamics Dyno were exactly along the same lines as in the graphs with the calculation.

[Martin Donnon]

Thats not actually a Mainline thing....and they dont really like me doing it...BUT

Having had a DD then swapped over to Mainline some of my customers wanted to see where their kw went (when in fact it went nowhere!) so I used the custom Math Channel function on the Mainline to write an 'Estimated Dyno Dynamics' correction factor, which as you can see works pretty well

We also have a Dynojet HP Channel thing as the Americans really like to see their power readouts in 'Dynojet HP' and dont like kw

Good news is your car would make 500rwhp on a Dynojet no worries!

[wasnt me]

Thats not actually a Mainline thing....and they dont really like me doing it...BUT

Having had a DD then swapped over to Mainline some of my customers wanted to see where their kw went (when in fact it went nowhere!) so I used the custom Math Channel function on the Mainline to write an 'Estimated Dyno Dynamics' correction factor, which as you can see works pretty well

We also have a Dynojet HP Channel thing as the Americans really like to see their power readouts in 'Dynojet HP' and dont like kw

Good news is your car would make 500rwhp on a Dynojet no worries!

so martin what is the difference in percentage between mainline and dyno dynamics?

[heslo]

i know what your thinking Luke

[DC_GTST]

So....when's the next one