Jump to content
SAU Community

Recommended Posts

This is a prototype ATR43 G4 520HP CHRA. It runs on shortened bearings and weigh reduced turbine for maximum response. engineered to produce about 300rwkws at 20psi on .63 ATR43's turbine housing using RB25det engine with supporting mods.

The smaller one on the photo is ATR43 G1 350HP CHRA. Its made for 240rwkws with excellent street response.

3.jpg

5.jpg

1.jpg

2.jpg

4.jpg

Compare to ATR28G4 it has lighter turbine with shorter bearings. So it should have slightly better response. I might update this CHRA into the ATR28G4 once its been evaluated.

Turbine housing is getting made. I'm going to swap this 2x with my existing high flowing customers. probably Geraus and SS8_Gohan for some dyno and evaluation results.

For time been we will still be using proven ATR28 CHRAs. Price wise I don't know at this stage. depends on how much it cost to build the rear housing.

hi,

i skimmed through quickly but didnt find the exact answer i was looking for.

what turbo would you suggest is the most efficient/responsive for a Rb20(r32) wanting to make 240-250rwkw while keeping the stock manifold, but being externally gated.

thanks.

hi,

i skimmed through quickly but didnt find the exact answer i was looking for.

what turbo would you suggest is the most efficient/responsive for a Rb20(r32) wanting to make 240-250rwkw while keeping the stock manifold, but being externally gated.

thanks.

i went with a ATR28G3 with 0.63 internal gate rear for my rb20... i'm looking for a tad more power than you

so maybe look at a ATR28G2

hook us up Stao :P:ninja:

we going to need new dumps? and am i going to have to run stuff in again... done so much friggen running in with this car :P

EDIT: so are you saying these will be laggier or potentially, they might be a little more responsive and make a bit more power?

3.jpg

Nice love the pointy wheel. Hopping to see the complete turbo and some results soon.

ps.

would this punch a whole on my foot if I drop it upset down? :ninja:

Edited by kwickr33

Today got the turbine housing made. It is .86 in a T28 which is equivalent to a .63 in a T3x.

It is bolt on to stock T3x manifold and 6bolt dump.

th3.jpg

th2.jpg

th1.jpg

The Very first ATR43i 520HP G4 in T3 .64 Turbine is complete:

atr43f.jpg

atr43b.jpg

We'll be making few more different A/Red turbine housings in the next few weeks. We will also be engineering a 650HP profile CHRA to suit a .84 Bolton Rear housing.

Well stock turbo won't make 520HP. Bigger turbos will creat more lag. This is a G4 profile, made for 300rwkws.

We also have this in G1 and G2 profiles which are rated 350HP and 450HP. The G1 would have very similar response as the stock turbo to produce max of 240rwkws, G2 is about 300RPM laggier but but its good for upto 270rwkws.

Price wise This turbo is $1300 to complete. With normal Turbine housing which comes out in a Vband rear is $1050 internally gated. or $950 externally gated with a 5 bolt flange.

didn't i have a G2 originally? that was about 230rwkw at 15psi -

gotta remember, "most" people won't be bolting these onto built engines (IMO) - they'll chuck em on, run 15/16/17psi and that's probably about it. I'm only running a bit more boost because of E85, otherwise, 17psi would probably be my max.

will give you a call/email asap about the .63

Yes but that was in stock R33's turbine housing. Now they are running in a .63 T3x rear housing, The spec of it is very similar to a GT3071. So it should make around 260rwkws at 18psi of boost on 98 fuel

Yes but that was in stock R33's turbine housing. Now they are running in a .63 T3x rear housing, The spec of it is very similar to a GT3071. So it should make around 260rwkws at 18psi of boost on 98 fuel

do you also make this turbo with an externally gated rear housing?

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

    • I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...