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How will a 50 trim turbo pair with my set up?

Sir Psycho

holstrich 2.0
Joined
Sep 27, 2008
Location
Austin TX
My guess is pretty good?

I have a Holset HE351 and it is way too laggy. I want something that starts spooling early with a swift kick, but doesn't die up top. I do a ton of city driving so peak power at ~6000 rpm is useles.

Engine specs:
531 ported head
Header
3" TB
Ebay IC and 3" piping
3" exhaust
ipd turbo cam with adjustable gear

Turbo specs:
T04E 50 trim compressor wheel
stage 3 turbine wheel
AGP T3 a/r .48 4 bolt turbine housing
oil cooled/oil journal bearings center section
AGP AGP Cast T04E ported shroud housing with 4" inlet & 2" outlet.
 
Seems like it would spool rather well then. I 13 psi at around 4000 with a .63 AR T3 on a 90+ in a tired old B21.
 
An aw71 240 with the accumulator mod on 20lbs was one of the most fun cars I've driven
Chirping every gear, brake boost and no respool between shifts! I have some good onrom pulls of it fighting for traction with a g80 at 40mph.
 
A manual trans would have shorter gears than the AW71 I assume. Wouldn't that put less load on the engine and make that Holset spool up even slower or make it harder to even reach peak power before needing to shift?
 
if you're going to run a really big turbo (or even a moderately oversized one like the 351) you need to turn it out higher than stock to get much out of it.. be that with an auto or a manual. It's relatively simple math.. if the turbo isn't all in before 4500 and you're shifting at 55-6000 your powerband is comically small and you're going spend 95% of your driving miles away from it. The offset is to turn it to 7 or 7500. Yes, this requires a cam. Yes this probably requires springs as well. Gotta pay the piper.

The turbo cars that are the most fun *all around* are the ones with turbos *smaller* than what you think you need. the little 16g on my wagon rocks the house, and starts choking right around 6k, which is perfect for the setup. I could stack on 100whp with just a turbo swap but I'd give up easily 1500rpms in spool time. not worth it.

A t04e-50 trim is a fantastic turbo. Highly recommended if you're shooting for 380+hp to around 500whp. But if all you want is 300-350, get a t3 super 60 or one of those high dollar gt3076r or whatevers. There's a lot of good options in the 300-350whp range that'll make awesome torque and will spool very quickly.
 
A manual trans would have shorter gears than the AW71 I assume. Wouldn't that put less load on the engine and make that Holset spool up even slower or make it harder to even reach peak power before needing to shift?

Theoretically yes, but what also ends up happening is you are stuck below the level of boost onset even longer. This is even more noticeable, and you end up with a car that doesn't remotely become fun until you are over the speed limit.

Kenny is exactly right...
 
if you're going to run a really big turbo (or even a moderately oversized one like the 351) you need to turn it out higher than stock to get much out of it.. be that with an auto or a manual. It's relatively simple math.. if the turbo isn't all in before 4500 and you're shifting at 55-6000 your powerband is comically small and you're going spend 95% of your driving miles away from it. The offset is to turn it to 7 or 7500. Yes, this requires a cam. Yes this probably requires springs as well. Gotta pay the piper.

The turbo cars that are the most fun *all around* are the ones with turbos *smaller* than what you think you need. the little 16g on my wagon rocks the house, and starts choking right around 6k, which is perfect for the setup. I could stack on 100whp with just a turbo swap but I'd give up easily 1500rpms in spool time. not worth it.

A t04e-50 trim is a fantastic turbo. Highly recommended if you're shooting for 380+hp to around 500whp. But if all you want is 300-350, get a t3 super 60 or one of those high dollar gt3076r or whatevers. There's a lot of good options in the 300-350whp range that'll make awesome torque and will spool very quickly.

Thank you, that's the reply I was looking for. Do they make T3 16g's? All I've seen are the evo ones with the funky flange.
 
On an auto whiteblock, the T3/T4E .60 spooled at about 3500. Not apples to apples, but you'd be looking at a number in the 3500-3750 ballpark, thereabouts.
 
On an auto whiteblock, the T3/T4E .60 spooled at about 3500. Not apples to apples, but you'd be looking at a number in the 3500-3750 ballpark, thereabouts.

Really? I would think a StgIII wheel in a .48 ar hotside would spool a bit sooner then that. I've .63's come on before 3500.
 
Thank you, that's the reply I was looking for. Do they make T3 16g's? All I've seen are the evo ones with the funky flange.

hahn racecraft sells a couple, but the evo3 16g is not the same thing as what I've got on my wagon. if you've got a garrett setup more or less, a garrett t3 super 60 would fit well.
 
Thank you, that's the reply I was looking for. Do they make T3 16g's? All I've seen are the evo ones with the funky flange.

hahn racecraft sells a couple, but the evo3 16g is not the same thing as what I've got on my wagon. if you've got a garrett setup more or less, a garrett t3 super 60 would fit well.

Kinugawa has a couple of options for T3 TDO5H (for your 16g). One of them is prolly that funky flange you're talking about.
http://shopping.kinugawaturbo.com/k...0gandblowoffvalveand8cmt3housing-1-1-1-1.aspx

There is a V-Band option with no wg as well.
http://shopping.kinugawaturbo.com/k...urgetd05h-16gwt38cmv-bandexternalgatehsg.aspx

And should you decide on a Super 60, I just yanked one off my wagon. It's a Turbonetics Super 60 quick spool (small compressor housing).

I'll sell the compressor housing and wheel. ;-)
 
Really? I would think a StgIII wheel in a .48 ar hotside would spool a bit sooner then that. I've .63's come on before 3500.

Yeah...it was OK with me as it was mainly a highway car, but it spooled pretty late. You can hear/see it in this vid when it hits...

https://www.youtube.com/watch?v=l03E8v3h4L8&list=UUWQylsGZ2qfpJmQXfB7RlTA

I can't remember for sure as there are a lot of variants of that turbo, but I think it may have been this one...

http://speed-daddy.com/t04e-t3-a-r-...rbo-compressor-bearing-turbocharger-stage-iii
 
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