New Garrett Gtx2860R / 2863R / 2867R

[mr skidz]

If you share that 3.5" exhaust between the 2 GTX63s it is only 1.75" diameter exhaust for each 440hp turbo!

That's a huge ask from 1.75"

That Z32 shows its doable just open up the inlet and exhaust more and if it doesn't work then I'll right them off.

But for now there my 600 wheel horsepower turbo of choice

Edited October 9, 2015 by mr skidz

[wolverine]

I thought area = pi r squared

[s2d4]

share 3.5" means ~2.44" for each turbo.

Edited October 9, 2015 by s2d4

[mr skidz]

Is a 3.5" exhaust big enough for trying to achieve 470wkw to 490wkw?

[GTRsean]

I'd say no, especially if running on E85.

[sneakey pete]

Planning on running 3" to 4" front pipes off my hpi dumps, down to 3.5 after the cat on mine,should be enough for the 2860s I'd say.

[mr skidz]

Sounds good pete.

Are you gonna aim for big psi?

You on E85?

[sneakey pete]

Front housing machining has been done on my GTX2860's, picked them up from MTQ this morning.

I'm about to do a multi week roadtrip down to Victoria, so they won't be going in for a little while. I'm hoping maybe January. I need to sort out a few things first, like fuel system and exhaust.No point putting them in if something else is holding them back.

[r32-25t]

What are the specs on those?

[mr skidz]

Gorgeous wheels pete, how much power are you aiming for?

E85?

Just spin them as hard as you can too..

I've been held up by my machinist he hasn't given me my head back yet so I'm able to delay my turbo choice.

Edited October 22, 2015 by mr skidz

[Piggaz]

What ass end have you got on it Pete? You may have mentioned it earlier.

[mr skidz]

There is only one that can be used.

Std GTX2860 core -5 rear housing.

Aka -9 on steroids!

Edited October 22, 2015 by mr skidz

[sneakey pete]

As above, they're -5 housings so .64 ar I believe.

And yes, e85 of course!

Power wise, that's to be determined by my work outlook. Worst case I suppose would be standard engine with arp headstuds. Id still throw a heap of boost in but may be limited

[Roy]

Will be interesting to see how the 0.42A/R compressor cover goes vs the 0.60. I think others have mentioned the lower A/R may not match the higher pressure ratios of the GTX compressor. Keen to see results!

[SimonR32]

As above, they're -5 housings so .64 ar I believe.

And yes, e85 of course!

Power wise, that's to be determined by my work outlook. Worst case I suppose would be standard engine with arp headstuds. Id still throw a heap of boost in but may be limited

Nothing wrong with the standard bottom end, as you said just wack a set of ARP2000 studs and also maybe some drop in cams and away you go!

[mr skidz]

Front housing machining has been done on my GTX2860's, picked them up from MTQ this morning.

I'm about to do a multi week roadtrip down to Victoria, so they won't be going in for a little while. I'm hoping maybe January. I need to sort out a few things first, like fuel system and exhaust.No point putting them in if something else is holding them back.

One for you pete, GTX2860's custom high mounts on a std 2.6L pulled 373 rwkw on only 17psi using stock ported comp covers and says .73 turbine housings??

Definitely different

https://instagram.com/p/77nQx7FHfn/

Edited November 2, 2015 by mr skidz

[Piggaz]

Would be nice if there was more info on the turbine housings!

[mr skidz]

Another GTX2860 running low psi, I Wish someone would just turn them up already.

My motor is almost ready lol

Edited November 2, 2015 by mr skidz

[fomby639]

Does any body know if a -9 rear housing will work with the gtx cartridge? Wheels are the same diameter just a different trim, 76 vs 62. As i have -9's now was wondering if i just got the machining done and swaped out the cartridges.

edit: Looks like the -9 rear exducer is 34mm while the -5 is 41mm so I'm guessing no, only other question is will a gtx2860 front compressor fit on a 2859r cartridge?

Edited November 4, 2015 by fomby639

[sneakey pete]

You would just need to machine the -9 housing and it would work.

That being said -9(-7 is the same) rear wheel with a 2860 front may be a good combo...