75/83 compund set up

[superstroker99]

How would a S475/83 T4 1.10 and a S483/96 T6 1.32 work in a compound set up or are they to close in size?

 

[nwpastroker]

From what I have read, with a primary that size you would want your atmosphere 90+

 

[HOOV3R]

A 66mm or smaller would make a better high psi in a setup.

 

[SSpeeDEMONSS]

From what I have read, with a primary that size you would want your atmosphere 90+

Primary and atmosphere are the same. The large, low pressure turbo. The secondary is the smaller, high pressure turbo.

Garrett

probably getting paid at work to post this from my bionic

 

[dentexpowerstroke]

They are to close in size, and you wouldn't ever have boost until higher rpm. Really a 75 is to big for a hp charger, 64-66 is more of the size you want.

 

[superstroker99]

kinda where i stood with it to..... might just go the single 75 then

 

[PowerstrokeJunkie]

The forged mill s362 is an awesome turbo itself for a 300-400hp setup, with a large wastegate it would be awesome with a 80+mm in front of it

 

[Charles]

Use something like an S366, T4 for the second stage because they are cheap, readily available and reliable, then later you can always add something like a GT55.

A charger that makes 600+ as a single is a tweener for a compound setup. Has no real place. Too small for a first stage, too big for a second stage.

 

[superstroker99]

Im trying to get rid of my 75/96 and a guy offered me a trade for the S483/96 so i figured id toss the idea i already ordered a 75/83

 

[dentexpowerstroke]

The forged mill s362 is an awesome turbo itself for a 300-400hp setup, with a large wastegate it would be awesome with a 80+mm in front of it

I've always thought the 62 or 64 fmw would be an awesome hp turbo if gated right.

 

[Groomzybanshee]

Use something like an S366, T4 for the second stage because they are cheap, readily available and reliable, then later you can always add something like a GT55.

A charger that makes 600+ as a single is a tweener for a compound setup. Has no real place. Too small for a first stage, too big for a second stage.

I disagree with the s366 being reliable.

 

[Vader's Fury]

Why is that?

 

[Chvyrkr]

I disagree with the s366 being reliable.

X2

All the dodge guys around me call 'em hand grenades.

 

[strokin'_tatsch]

There's no reason it shouldn't be reliable if it's getting proper oil feed/return and your boost to drive ratios aren't insane........... I'd still prefer the S400 frame, but there shouldn't be anything wrong with the S300..

 

[Groomzybanshee]

It's simply a cheap turbo and that is that.

 

[strokin'_tatsch]

It's simply a cheap turbo and that is that.

So is an S400... An H2E is even cheaper... I guess that makes all those junk.. :doh:

 

[Groomzybanshee]

Have you ever ran an s366?.. And try to buy a modded h2 the same size as an s366 and tell me how it's cheaper. The holset is a reliable turbo. The junk 366 isn't. If you haven't ran a 366 then quit being and Internet know it all and shutup. I'm speaking from me experience with this turbo on more than one truck. Not what I read on the net. If you do have a 366 and like it then you must be lucky.

 

[PowerstrokeJunkie]

Barking the turbo is extremely harmful on the lifespan of any turbo, im guessing he's barked the shiz out of his thus prematurely wearing it out, and they're junk. I wastegated my s366 and it made ~550hp pretty reliably although that's about all it wanted

 

[Groomzybanshee]

To the op good luck on your build. I was just giving you my advice. Why are you wanting compounds?

 

[strokin'_tatsch]

Barking the turbo is extremely harmful on the lifespan of any turbo, im guessing he's barked the shiz out of his thus prematurely wearing it out, and they're junk. I wastegated my s366 and it made ~550hp pretty reliably although that's about all it wanted

Thank you...

Wastegates.... Learn what they are, learn what they do. Now use them when warranted. Haven't run an S366 on my truck, but I have datalogged such a setup with no wastegate and then with a wastegate back in January. Even this internet know it all knows how to find out whether a wastegate is needed or not. I can tell you for sure that an S366 w/ 238/100's needs a wastegate. Granted, 4 months isn't terribly long to call it reliable in my experience, but there really is absolutely no reason for it to fail now.. Before, without the wastegate.. Yeah, I could see it failing before too long.

EDIT: I run an S465 for the larger exhaust wheel to get away from needing the wastegate.