VY TT 505rwkw@12psi

[enhancedss]

Just an update on the Twin Turbo VY, after many dyno power runs, camshaft changes all as R&D on the vehicle, testing maximum boost, Intake Air Temperatures under all different boost conditions, the turbo's originally fitted to the vehicle were just not big enough for the latest camshaft grind, and only producing 14psi.

So after a few changes in the location of the new garrett turbo's, a couple intercooler pipe modifications, installation of twin 38mm external wastegates, with screamer pipes.

The car fired into life on Saturday morning, just a few hours before Street Commodores dyno day, held at Graham West Workshops (Park Holme)

From what was said on the day, the dyno readings were down approx 30kw's and 50kw's from a VX SS which id recently seen on the previous dyno day held here in SA.

The car was washed, safe tune installed, and then driven down for the dyno day, boost was controlled by a Turbosmart Boost T (slightly modified), as time wasnt there for setting up the greddy boost controller.

As the car hadnt been on the dyno with this new combination the tune was left extreamly safe, meaning there is plenty more in reserve.

I was extteamly happy with the overall results from the vehicle, on such a safe tune and little boost, boost will be wound up to 22 PSI.





In the dyno graph above, the maximum boost pressure recorded 12.3PSI, in such a low comp engine, even the operator and owner of the dyno, estimates 650-700rwkw from this little 346ci alloy block LS1.

Just an update, i finally found time yesterday afternoon to spend a few hours on the car.

After exceding the torque limits of the dyno in 4th gear with 3.46's, 5th gear was used.

after running the vehicle on the dyno and only producing 460rwkw, with the same tune and same boost levels 15kw's down from previous dyno run on a mainline dyno.

Here are the results. after further tuning.

[HoldenMan7]

Hey Mate, thats very impressive, you ran it down the 1/4 mile ??

[Peanuts Inc.]

very impressive figures, how come you only took it to a little above 5000 revs???

[1991_Vn2nV]

Hey man, awesome results. I f***in love this car! Cant wait to see what happens when the boost is wound up

[enhancedss]

Originally Posted by HoldenMan7

Hey Mate, thats very impressive, you ran it down the 1/4 mile ??

will be very shortly, just have to downsize brakes, fit rims and slicks and change suspension to suit.

I will keep u posted on the times it runs, when i do decide to take it down the 1/4 ive only got 1 chance at a 10sec pass, as im not fitting a gage to the family car, my drag ute will be a different story thou.

[enhancedss]

Originally Posted by Peanuts Inc.

very impressive figures, how come you only took it to a little above 5000 revs???

much appreaciated, the engine seems to be losing power up top, but also being on boost for a long period of time, IAT's rise dramatically where the vehicle is going to lose power anyway. When i get more time to spend on the vehicle i will carryout further testing and diagnose the actual cause.

[enhancedss]

Originally Posted by 1991_Vn2nV

Hey man, awesome results. I f***in love this car! Cant wait to see what happens when the boost is wound up

Dylan, start saving your pennies, as the vehicle will be up for sale soon if everything goes to plan, you should come for a ride in the vehicle with the latest setup, it makes the blower look shameful, with the mid range power absolutly awesome are the only words i can describe it, with 4 in the car top of 3rd gear, 80ltrs of fuel on board, squeeze the throttle and instant smoke.

[1991_Vn2nV]

Ahh man, when it had the blower on that blew my mind, I cant imagine what its like now

Hopefully i'll get to see it soon mate

[AttaBoy]

How much you willing to sell it for?? Estimate price??

[enhancedss]

Originally Posted by AttaBoy

How much you willing to sell it for?? Estimate price??

Give me a call, and i will discuss a price. I didnt want to set a price it would be more of a offer, or i will strip the components of the car, and sell the car as a normal VY SS.

[greenfoam]

Originally Posted by enhancedss

will be very shortly, just have to downsize brakes, fit rims and slicks and change suspension to suit.

I will keep u posted on the times it runs, when i do decide to take it down the 1/4 ive only got 1 chance at a 10sec pass, as im not fitting a gage to the family car, my drag ute will be a different story thou.

You'll have to run a few strong half tracks to get the launch sorted and jump on the brakes :P then once your confidant it you have it launching as good as it's going to run drive it home for the win. Is that the plan? I've seen lots of gigwatt supras struggle to beat cars with less than half their power though, because they come on boost so hard it's almost impossible to drive them fast without it all going up in smoke

[enhancedss]

Originally Posted by greenfoam

You'll have to run a few strong half tracks to get the launch sorted and jump on the brakes :P then once your confidant it you have it launching as good as it's going to run drive it home for the win. Is that the plan? I've seen lots of gigwatt supras struggle to beat cars with less than half their power though, because they come on boost so hard it's almost impossible to drive them fast without it all going up in smoke

Yes that was the plan, had a few hicups through out the day, flatspotted front runners and slicks, and enilated a clutch, still managed to do a 130MPH pass with these faults.

[REV-231]

What a monster this car is! It always has me guessing every time i see it.. what is lurking underneath the bonnet this time!

great work