Supercharger Systems -4GEN Liberty/Legacy

[Tradewind]

Gino

I am interested in the maximum rpm the engine was turned to during dyno testing. Was it still 7000rpm or did you go a bit more?

I also have some new stickers being for those with Premium kits (WTA intercooled primarily and others with both WTA cooler/VLC charger)

[dawesy]

Time to start saving again hahaha damn cars.

Great result gino you must be stoked.
Can't wait to see some vids of this in action and sound clips

[KiDo_Tuning]

Does anyone know how to convert the tractive figure to engine torque? Did a bit of googling and people are saying you need to know the rolling radius of the tyres, then the diff ratio, then the gear ratio. It's a calculation from LS1.com.au so not sure if it can be applied to AWD cars as easily?

Since Hp=(LftLbs x RPM) / 5252
Power in Kw * 1.3405 to get Hp, then assuming 28% drivetrain loss(a constant to all calculations on one dyno sheet keeps the torque ratios between rpm constant) then multiply by 5252, then divide by 5500rpm to get FtLbs, multiply by 1.3405 to get Nm of engine torque

[3rspecb]

Gino

I am interested in the maximum rpm the engine was turned to during dyno testing. Was it still 7000rpm or did you go a bit more?

I also have some new stickers being for those with Premium kits (WTA intercooled primarily and others with both WTA cooler/VLC charger)

7100rpm Tim.

[3rspecb]

Great result Gino

I'm sure it's alot stronger than just the peak power figure due to the huge torque this would have down low

You must be stoked

Enjoy the new found powaaah

Mick

Thanks Mick. Feels so strong, im wrapped.

[jaydece]

Does anyone know how to convert the tractive figure to engine torque? Did a bit of googling and people are saying you need to know the rolling radius of the tyres, then the diff ratio, then the gear ratio. It's a calculation from LS1.com.au so not sure if it can be applied to AWD cars as easily?

Since Hp=(LftLbs x RPM) / 5252
Power in Kw * 1.3405 to get Hp, then assuming 28% drivetrain loss(a constant to all calculations on one dyno sheet keeps the torque ratios between rpm constant) then multiply by 5252, then divide by 5500rpm to get FtLbs, multiply by 1.3405 to get Nm of engine torque

As K has stated above? rolling radius? diff ratio? gear ratio? you could call on other factors but those 3 are probably some of the main ones...

Your formula hasn't factored in any of the above? therefore how can it be accurate enough?

Is this the same formula you use when creating your virtual dyno figures?

[brainy]

Gino,

Grats on your result!

Also, thanks for the drive. I can honestly say that between that awesome sound and the awesome power kicking in that it was one of the most enjoyable drives I've had.

Your car pulls hard, feels tough, sounds tough and I'm sure u r loving it as much as I loved driving it.

Kudos to Cihan for a great tune.

Hopefully other h6 supercharged cars can look and feel as quick as yours too.

[KiDo_Tuning]

Does anyone know how to convert the tractive figure to engine torque? Did a bit of googling and people are saying you need to know the rolling radius of the tyres, then the diff ratio, then the gear ratio. It's a calculation from LS1.com.au so not sure if it can be applied to AWD cars as easily?

Since Hp=(LftLbs x RPM) / 5252
Power in Kw * 1.3405 to get Hp, then assuming 28% drivetrain loss(a constant to all calculations on one dyno sheet keeps the torque ratios between rpm constant) then multiply by 5252, then divide by engine rpm to get FtLbs, multiply by 1.3405 to get Nm of engine torque

As K has stated above? rolling radius? diff ratio? gear ratio? you could call on other factors but those 3 are probably some of the main ones...

Your formula hasn't factored in any of the above? therefore how can it be accurate enough?

Is this the same formula you use when creating your virtual dyno figures?

Most dyno tunes are run at closest to 1:1 ratio gearing... 4th gear power run in the H6 right?
The dyno has done the calculations for you to SAE

28% Drivetrain loss
231Kw * 1.3405 to get Hp, then assuming 28% drivetrain loss(a constant to all calculations on one dyno sheet keeps the torque ratios between rpm constant) then multiply by 5252, then divide by 7050rpm to get FtLbs, multiply by 1.3405 to get 430Nm of engine torque
35% drivetrain loss
231Kw * 1.3405 to get Hp, then assuming 35% drivetrain loss(a constant to all calculations on one dyno sheet keeps the torque ratios between rpm constant) then multiply by 5252, then divide by 7050rpm to get FtLbs, multiply by 1.3405 to get 475Nm of engine torque

Now for low rpm torque...
50Kw * 1.3405 to get Hp, then assuming 28% drivetrain loss(a constant to all calculations on one dyno sheet keeps the torque ratios between rpm constant) then multiply by 5252, then divide by 2350rpm to get FtLbs, multiply by 1.3405 to get 279Nm of engine torque
28% drivetrain loss scenario has 70% more torque at 7050rpm than at 2350rpm... which is reflected in the dyno torque graph

Factory power output was 180Kw
180Kw * 1.3405 to get Hp then multiply by 5252, then divide by 6600rpm to get FtLbs, multiply by 1.3405 to get 257Nm of engine torque at peak power They typically make 135 to 150Kw@wheels so a 55 to 65% increase in torque would be considered normal...

The plateau from 80 to 88kph is also the publicly undefined Valve Lift activation point(that I am happy to share) which dropping it from 4400rpm to 3750 should smooth out the curve

[3rspecb]

Gino,
Grats on your result!
Also, thanks for the drive. I can honestly say that between that awesome sound and the awesome power kicking in that it was one of the most enjoyable drives I've had.
Your car pulls hard, feels tough, sounds tough and I'm sure u r loving it as much as I loved driving it.
Kudos to Cihan for a great tune.
Hopefully other h6 supercharged cars can look and feel as quick as yours too.

thanks Juzzy. Yep i'm really loving it at the moment.. Been thrashing the arse off it since the tune and can't wipe the from my face.

Economy is better too

[Tradewind]

Gino,
Grats on your result!
Also, thanks for the drive. I can honestly say that between that awesome sound and the awesome power kicking in that it was one of the most enjoyable drives I've had.
Your car pulls hard, feels tough, sounds tough and I'm sure u r loving it as much as I loved driving it.
Kudos to Cihan for a great tune.
Hopefully other h6 supercharged cars can look and feel as quick as yours too.

thanks Juzzy. Yep i'm really loving it at the moment.. Been thrashing the arse off it since the tune and can't wipe the from my face.

Economy is better too

The news is all good, is clutch going fine with the whole idea?


Keep your points in place lol

[Tradewind]

My local customer had his 3.0RB SC mod plated (engineered) successfully for legal use on our roads today!

A win, no problem at all.

[3rspecb]

Great news Tim.

Clutch seems to be ok now. My tuner burned the clutch when taking the car off the dyno, so maybe that caused it to slip for a couple of days. Anyway have a replacement clutch in the garage and will go in when the oe clutch shites itself..

[Kekotic]

Great news Tim.

Clutch seems to be ok now. My tuner burned the clutch when taking the car off the dyno, so maybe that caused it to slip for a couple of days. Anyway have a replacement clutch in the garage and will go in when the oe clutch shites itself..

Oem clutch or going aftermarket?

[3rspecb]

Aftermarket.. Exedy something, apparently the same model as what Justin and Brian have fitted.

[<GB>]

Aftermarket.. Exedy something, apparently the same model as what Justin and Brian have fitted.

I sat in Justin's car and his is hard as rock compared to mine, shit thing is I don't know what mine is... It's a rev zone secret clutch!