Jeff@Evolution

Nice thread.

SQUILL

UGH !!!!!!!!!! gurgen i just finished working on the flow chart and noticed when i was converting bar into psi that the PE compressor chart starts off at 1.2 bar instead of 1 bar like everyother compressor chart!!!!

so now all my hard work is ruined!!! ill have to fix it tomorrow but i have to say that these turbos look to be very well chosen for the VQ motor and look like they will support a max of 18 psi @ 7000 rpm which should develop a very healthy 550 + whp on a lower compression built motor i would guess.

Any way i have to redo the entire chart ill post it up tomorrow...sorry shoulda looked more closely!

GurgenPB

iTrader: (2)

hey
actually i am working on a version myself... but running into some problems. Not sure how that x-axis is scaled (m^3 times 3?) B/c if it straight, soemthing is wrong with my excele chart. Too tired... looking forward to yours.

SQUILL

take x cm3 per min (cubic meters per minute) x 35.31467 to get cfm or cubic feet per minute

so 6 cm3 per min = 211.88 cfm. (6 on the bottom of the chart)

GurgenPB

iTrader: (2)

yeah that's what I did, but I am getting a really weird chart.

GurgenPB

iTrader: (2)

Here is what I am getting. Something is wrong

JeffesonM

any interest in doing one for the Vortech V2?

Juztin

iTrader: (9)

Request for Squill :

Can you possibly due a map for a TD-06, and GT35 (I'm considering doing a single turbo)

--j2

SQUILL

gurgen you have the right idea however assuming your plots are correct ( cfm demand starting at 1.2 bar and them cfm at 2.4 bar would be easiest to plot your points) you must divide your plots by 2 as there are two turbos!

hee hee im sure thhats what happened!

SQUILL

OK i finally got it done here is the pe chart

SQUILL

no problem in fact i might have done a gt35 already ill have a look

GurgenPB

iTrader: (2)

ahhhh. doh!

GurgenPB

iTrader: (2)

Hey Guys

Here is my version. I also added some curves to give you an idea of the spool up that I see in my car wth these turbos.

G

EDIT: Actually, I am a little unsure of the spool up time in 1st gear - but that represents the worst case scenario. I'd almost bet that the spool up begins a little earlier, but again, not sre. Will double check when i get the car back

SQUILL

hEE hee the gt35 looks to bee a little small!

1.2 bar = 3 psi
1.4 bar = 6 psi
1.6 bar = 9 psi
1.8 bar = 12 psi
2.0 bar = 15 psi

on any compressor chart 1 bar = normal atmospheric pressure so 1 bar on the chart = N/A

2 bar on any compressor chart = 1 bar of normal atmospheric pressure plus 1 bar of positive boost pressure or 2 total atmospheres which equals 1 bar of positive boost pressure or 15 psi roughly of positive boost pressure

SQUILL

Here you go!

SQUILL

The td06 20g compressor map is similar to the gt35 compressor map and is way too small for the vq motor.

Have a look at the vortec compressor map that i did.

you can see that a single turbo needs to be able to produce 800 to 900 cfm for the 3.5 l VQ.

ill look for a turbo that might be a good fit .

SQUILL

Ok Juztin how bout a single garrett gt42 snail on the vq block!

not only does it look good for lower boost pressures but how about 27 psi @ 7000 rpm on a built motor in the future!!

SQUILL

oops forgot the pic!

PoWeRtRiP

the turbonetics one for their single is actually a 60 trim opposed to the gt42 56 trim you showed. could you post up a chart of that one i believe they have maps on their site.

thx in advance.

Juztin

iTrader: (9)

Wow that GT42 looks like a good candidate . Ball bearing ooohhh. Only thing is that sucker is 2g's! Ouch lol. Looks like at even ~7psi it'd be flowing as much as 500cfm albeit with not great effeciency correct? There's nothing smaller that could really flow enough air to support say ~400 wheel at a max of ~9psi? hmmm