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Domestic Vs Import Dyno Day

toyotacarclub.net

By toyotacarclub.net,
in South Australia

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Martin Donnon Mentor

Martin Donnon

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None of those torque figures are accurate unless an inductive RPM pickup was put on the engine, or the derived rpm generated from wheel vs roller speed (not quite as accurate). If you have Killowatts at the Roller and an Engine RPM figure, you can of course calculate a "Derived" Torque figure, remember if you have any 2 of the 3 components of Power (HP)= (TrqFtlbs x RPM)/5252 equation the 3rd can be calculated. Mainline dynos do this very accurately with their excellent RPM pickup, but like any top level chassis dyno they give Derived Torque which is simply Torque at the Rear Wheels (or front or all 4), so essentially it's the Flywheel Torque minus Driveline losses.

If you want a torque figure calculated correctly for any of your cars let me know and I can run them with the RPM pickup in place and generate true derived torque for each vehicle. At least that way you can make accurate comparisons :)

Note when an inductive pickup is used to measure rpm on the older version of DD software that most of you seem to be posting the torque is represented as iNm rather than straight Nm to let you know its been measured with an inductive pickup :D

Edited by Martin Donnon
whatsisname Grand Master

whatsisname

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Yo, Adrian (sorry, I couldn't resist) guess what? Although I didn't have my GTS25t at the recent BW dyno day, not long before that day Shaun did a tuning dyno run that resulted in 302.3rwkw, and pretty much the same torque peak too.

Have I mentioned yet, that I'm keen to get the 780cc injectors fitted, HKS cams dialled in, E85 tune done and then wind the boost up? Hurry up and arrive injectors!

180or200 Proficient

180or200

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Posted
Looks like its got a bit more in it if you were to tweak the ignition and afr's for max power. :)

Afr's in what i would call middle of the range .8 to .85, ignition has had a little tickle, who knows how much is possible with e85, I tend to think it's a flow issue, 1. std comp cover 2. std exh manifold. I think i can discount the valve springs floating, maybe some bigger cams would help!

whatsisname Grand Master

whatsisname

Posted
Posted
If you want a torque figure calculated correctly for any of your cars let me know and I can run them with the RPM pickup in place and generate true derived torque for each vehicle. At least that way you can make accurate comparisons :)

I'd be interested in that. I know someone that would be interested in Golf GT tweaking too :D

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