Jump to content
SAU Community

Recommended Posts

If you had to use a single turbo to make 400 - 450kw ATW, what would you use ?

GTX3582R, GT3788R, T04Z ???

gogogo !

Normally I would go the Z because it won't stop at 560-600 but the 3788 will spool faster. If you don't want any more than 560-580 then the 3788 is perfect, after that, the Z is still comparable for response with the 0.99 housing on the 3788

Alright lads,

Descision has been made.

http://www.gcg.com.au/AllImage/Products/Garrett%20Spec%20Sheets/gt3788r_772719-1.jpg

For those who don't want to click the link, it's the GT3788R from GCG here in aus, very reasonably priced too actually.

only question remains.

What rear ?

0.89

0.99

1.11

I'm thinking 0.99

Alright lads,

Descision has been made.

http://www.gcg.com.a...8r_772719-1.jpg

For those who don't want to click the link, it's the GT3788R from GCG here in aus, very reasonably priced too actually.

only question remains.

What rear ?

0.89

0.99

1.11

I'm thinking 0.99

Will you be going for low exhaust manifold back pressure and cams with some overlap? If you are, then go the larger rear housing but expect less performance at lower rpm.

If you don't have a lot of head porting and have zero overlap go the smallest.

I am not sure what the runner diameter of the 6Boost manifold and the lengths of the runners but that is also a consideration.

You need to choose which direction you want to set up your engine and turbocharger.

Low back pressure system: significant head porting, properly design tubular manifold, larger A/R turbine housing and camsahfts with some overlap... aim for 1:1 exhaust manifold pressure and boost pressure.

High back pressure system: the OEM turbocharger set up is a perfect example, higher exhaust manifold back pressure to boost (i.e. maybe 2/2.5/3.0 - 1), no overlap, short manifold runners, small A/R turbine housing.

You can't do a mix of both as each one will characterise how the engine will perform.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Maybe they'll look to do a bunch of presales to help inject some cash fast for their financial issues...
    • Does it also misfire equally when revving?   Josh is very correct in what you should do. The coilpack harness wiring loom itself is a known problem due to its age and the number of heat cycles it has gone through. Throwing parts at a vehicle to diagnose the issue isn't a smart or good way to do it. Secondly, you may have a bad coil pack, you pop replacements in, they fix that issue, but messing with the harness breaks it, so the issue persists. So now you think "well it wasn't the coil packs" and have to continue chasing your tail, potentially swapping back in your shit coil packs and returning the good ones (yes, I've seen people do this because 'it wasn't the problem' and they want to save money). And suddenly, you've got two issues with the same symptoms...   Diagnose, don't use the spare parts shotgun.
    • Well the articals keep saying a Q50s (Skyline in Japan) with a new Manual gearbox. I like the talk about the new looks with the round tail lights. I hope they bring back the retro look like they did with the Z
    • Off the back of feedback we have decided to mix up this next Motorkhana at Avalon to have some targeted skills practice for beginners to advanced. Saturday 6th September 2025 8:30am Capped 26 entries Standard Entry Fee: $89 Members Entry Fee: $55 (SAU Victoria Only) Entries Close: Friday 5th February  Where: 55 beach road Avalon. https://maps.app.goo.gl/HNUE3EuNue3sJxh38 Entries: Limited to 26 entrants (Passengers allowed over the age of 14 with a signed disclaimer and same safety gear) Disclaimer: Download  Please electronically sign and email to [email protected] or print and hand in and Driver Sign In. To compete in this event you will require A valid  AASA General Speed licence or (Day license via the AASA Website for $50) MA Licenses are no longer accepted by AASA https://aasa.com.au/  A helmet, long sleeve clothing and a 1KG mounted fire extinguisher recommended (But not Mandatory). Further details within Supp Regs on the enty link. Entry Link > https://www.sauvic.com.au/entry/deca/20250906 You can bring and have a passenger in the car but they need to comply to the same safety and clothing as driver. Bring your car and get to battle others, win, lose or draw. I can guarantee you will have lots of fun. Any questions email [email protected] Entry List: 1.Anna S 2. Luke S 3. Jesse Givens-Lamb 4. Luca Stamatescu 5. Madeleine Stamatescu    
    • Wanna rewrite all of that in, say, 2 or 3 separate sentences, so that we can read it?
×
×
  • Create New...