VZ SV6 - Raptor Supercharged

[aussiguy87]

awesome let me know how it goes tim are you going to ingham car show its prolly the biggest car show in north qld that i know of anyway

[rooboi]

What kinda of price would i be looking at to change my ratio on a Sv6 To the Cv8 Ratios ?

[wogstyler]

that very nice and something to be proud of.
go the new alloytec

[impulsesv6]

took the girl to the strip last night...

after last time on the dyno pulling around 198rwkw,

she ran a 13.547 @102.78mph

just a little bit more to beat 13.3@106mph, lol

[VZnewbie]

13.5 nice job buddy!!

[Raptorsc]

Nice one mate, mid 13.

Did you get my PM from over on Street Comms?

[aussiguy87]

wow 13.5 that awesome

[impulsesv6]

[Raptorsc]

Very nice photos

[pt72supra]

Impulse, why did you let off on the dyno so quickly after you were supercharged? It looked like you had plenty of RPM left.

[Raptorsc]

Nice nice pics

[monaro327]

i think the lower redline is to control boost mate.

[pt72supra]

Really? They are leaving a LOT of average power on the table.
If that is the reason, I would like to try my turbo setup so I can gate it, but I'd need help from Raptor SC, for things like tuning and injectors.

I've already done much of the math, I figure I can get about 300FWHP at 7.5 PSI conservatively intercooled from a T76 with a .81 AR on a T4 flanged housing, using factory manifolds. I do not have any data here that shows me what the stock injectors are rated for however, so I need guidance.

[monaro327]

why are you using a t76? why not use a GT3582r? i believe thats what proflow are using the GT turbos are alot better design they come on boost earlier.

[aussiguy87]

did it run better with the head light out??

[Raptorsc]

Putting the 13.5 into context is the only faster run we know of being a turbo Alloytec (Magic Performance) with a 13.3.

As the days tick by I believe we can flog that target well and truly, very devious plans are on the table

[monaro327]

phil's performence manifolds ute ran a 13.32 nice effort being N/A.

[Raptorsc]

Oh great, another one to knock off as well

[pt72supra]

why are you using a t76? why not use a GT3582r? i believe thats what proflow are using the GT turbos are alot better design they come on boost earlier.

Just cost my friend. I'm also looking for the lag to keep high cylinder pressures in check at lower rpms so I have a little more room for spark under pump gas. This will be a street car.

Raptor, I haven't heard from you bud, I PM'ed you hoping to get some of your advice, did you get my message?

I want to strengthen this community because the 3.6 are shoved aside, so badly in the states that i think people are sitting on a gold mine.

I have word also that the blocks are good to 700WHP before they need to be sleeved, which is quite good for an factory sleeved all aluminum block. I don't think the bottom end will hold that but there are parts out there.

I just want to start with engine management, we have HPtuners here as well, Ive got to know how we can tune over here for my own personal project first, and when i learn it, I would be ok with recommending modding thier "alloytec"

[Raptorsc]

Really? They are leaving a LOT of average power on the table.
If that is the reason, I would like to try my turbo setup so I can gate it, but I'd need help from Raptor SC, for things like tuning and injectors.

I've already done much of the math, I figure I can get about 300FWHP at 7.5 PSI conservatively intercooled from a T76 with a .81 AR on a T4 flanged housing, using factory manifolds. I do not have any data here that shows me what the stock injectors are rated for however, so I need guidance.

Maaaaaaaaaattttttttttttteee

This post is to cover the PM as well

We are using 450cc injectors for fuelling

We haven't seen anyone succeed with complete tuning for turbo via the factory PCM, and that still stands as of last week. It can be tuned to run ok on a dyno but soon as you hit the road it turns to poo, everything goes wrong. A long way to go and 5 weeks of specialist attention has been put towards it so far. I believe you could be facing same issues with your US model.

Otherwise so far as turbo goes do what you like, I have no advice as I don't know. But centrifugal charging of this motor and subsequent reflashing of the ECU has proved very reliable and consistant over more than 12 months now.

Only problem is you probably have no room around motor for anything much

How about some pics, feel free to post in this thread

[pt72supra]

Thank you for your response, and I appreciate you allowing me to piggyback on your thread. Around me, we absolutley love you guys down under and constantly get surprised to what you guys are doing with all types of cars, so my hats off to you.

My pics of my vehicle are pretty weak, and it looks real crammed, but a simple battery relocation would give ample room for turbo.

I wanted to go turbo for a few reasons. I prefer them number 1, just my preference, but I'll take boost anyway I can get it !
#2 a turbo in the exhaust stream will make the 3.6 sound amazing... Trust me.
#3 It won't have the noise of a CSC, CSCs tend to be quite loud, and this is going to be a corked up silent street car with a boost actuated cutout for backpressure mitigation...

Those points are neither here nor there, it's just so you know where I'm comin from.

Here is why I'm confused. Boost is boost, if people are having issue with it I believe it may be due to the torque management of the Bosch ME9. When a turbo hits on a 3.6 you'd be making a significant amount of torque, this may change on the dyno due to the amount of load thats put on the car... Maybe...

Outside of that, it won't matter if the bosch is seeing boost from a turbo versus a CSC.

Can you help me understand what you've done to prevent the ecu from flipping out once it sees positive pressure? I suspected the thing would flip out once it saw it.

May I ask where I would source the 450CC injectors? Do you have an idea what the stock pump would keep up with? My guess would be around 440whp, if we use GMs typical fuel pump room for error.

Also please explain subsequent reflashing, do you mean it constantly has to be reflashed? I know Phil went with a Motec, but I do NOT want to lose the factory ECU no matter what.

[monaro327]

Don't know where you got 700hp limit of the block from??

Theres a twin turbo alloytec over here that made 800rwhp with only rods and pistons changed nothing done to the block. the thing also had a cpr6 manifold and different cams. it ran a motec ecu.

[Raptorsc]

pt72supra

Boost is boost for sure, but the way in which it is delivered it what is killing the tuning on the turbo side of things at the moment. Your points are all sorted of valid about the Bosch etc but there are no results yet (in Australia) of tuning being able to be sorted through the stock ECU. In our case the boost rise is progressive as you know with centrifugal superchargers, so the ECU only sees this very slow rise in pressure vs rpm and certainly doesn't flip out . As I said earlier we have been VERY successful with reflashing/tuning the ECU for centrifugally supplied boost. I can sell you a tune file if you would like one, it won't do SFA for your turbo setup but will work with any centrifugal you can put with it

I have no idea where you would source your injectors in the USA but I am sure there are stacks of them there. I order our injectors through a local supplier, have no idea how he worked out what would fit but he delivered when we put in the first order and they continue to come as needed. Just look for something of same plug type and you are 99% of the way there.

[pt72supra]

Thanks buddy. The reason why I was confused about the injectors is because they are dual spray pattern, so I figured the replacement injectors would have to be the same otherwise it wouldn't work properly or whatever.

I'm still confused by the progressive onset of boost versus quick boost why that would make any difference unless there is a torque managment issue there. Are you sure a slow spooling turbo won't work with your tune gang?

[pt72supra]

Don't know where you got 700hp limit of the block from??

Theres a twin turbo alloytec over here that made 800rwhp with only rods and pistons changed nothing done to the block. the thing also had a cpr6 manifold and different cams. it ran a motec ecu.

From GMs race team that was putting 1800WHP through a destroked LY7 to a 3.5.