grants_968

Greetings all.

My 968 Turbo was on HMR's dyno for installation of its new Motec.

HMR captured the process in a video and placed it on youtube. Their first published youtube video.


Awsome. More later.

odurandina

mmm... Polar Silver. yes. i really like your car.

please pm address and vin as i'll be needing to get a key made.

Chubs_McFunn

What kind of numbers did you get?

Please post the dyno sheet. I'm sure we're all curious.

Lord_Galva

Lol, is a red hot exhaust normal?

flwbyu

What a beauty! I need to get in touch with those people over at Heritage. Been thinking about turbo charging the 968 for quite some time. Too bad I no longer live in Florida. Car looks immaculate as always!

Damian in NJ

Grant doesn't post often, but we like it when he does.

RajDatta

Its normal for header to get that hot, that they glow. Turbo charging also adds additional heat.

333pg333

Interesting specs. 220kpa = 31psi. Not sold that they were running this much boost.
Not a big fan of running it at 6000rpm on the dyno for 48 seconds either. Nice car though.

RajDatta

+1. That is some serious stress.

Mike O

I think he's really saying that the "boost" is about 1.2 bar.

In the specs Jason says that the package is rated at 220kPa absolute. This is the parameter measured by the MAP (manifold absolute pressure) sensor. With the engine off the MAP sensor reports the local atmospheric pressure, usually around 100 kPa for us sea level dwellers. At low rpm with no turbo MPA will report a low positive value and a vacuum gauge will report a positive value, both indicating a pressure below local atmospheric. At WOT the pressure in the manifold approaches local atmospheric so the vacuum gauge approaches zero and MPA approaches 100. This is zero boost. Strap on a turbo and run the engine at 220 kPa MAP or about 32 psi absolute. Since boost is the difference manifold and atmospheric pressure, Pmap-Patm=119 kPa or 17.25 psi or 1.19 bar.

Not so stressful when you look at it that way.

Discussion is expected...