PTE 54-trim

[VRMAN]

As most of you know, the PTE 50trim is quickly replacing the 16G as the popular turbo of choice in the DSM community. While scouring the PTE website, I noticed they had the SCM50 (50trim), the SCM32 (54trim) and the SCM34 (57trim) among others.


So I searched around and couldn't find any real reviews or posts on the 54trim which didn't seem all that much bigger than the 50trim so I figured I would try it out. So I just got the SCM32 today and was wondering if anyone had any thoughts about it or knew anyone who ran it? Seems like it would be at least a formidable choice to the 50trim, I was really suprised it is relatively unknown.

Any thoughts? Website listed it as a 480HP turbo, I have the .63 A/R with the 69trim exhaust wheel and setup external gate.

 

[DSM mechanix]

Search for Frank 3.

 

[VRMAN]

Frank 3 isn't bringing up much, can you give me more info or somebody have any insight info on how you think this will perform?

 

[zross1]

The 54 trim flows about 45 lb/min compared to a 50 trim that flows about 47 lb/min. It will perform about the same as a 50 trim. Not much of a difference.

 

[VRMAN]

Fhuck, I hate my life. So is this turbo capable of putting down any mentionable numbers? My mods are in my profile.

 

[sweet97]

I would not be worried about the turbo being capable enough! Probably half the guys here would love to have it. It's actually a bit bigger than the 50 trim, probably flows 30lbs./min. more. Should spool nicely and have plenty of top end pull. What were you looking for? It's rated for 480HP and the 50 trim for 450HP. Of course thats with all of the correct mods and experienced tuning. I sent you a PM on the CO 2 sprayer. The IC would be my concern as my own Dejon Street-FMIC and the AGP RS49 I have with 720cc inj's. The problem I have had is tuning to get up to 18-20 PSI without KNOCK. I can't get to 15 PSI without KNOCK!! I have the GM MAF-T, a wideband and the Scanmaster 3.
You've got some nice mods and like I said the turbo will do plenty. I'll be talking to ya! Mark

 

[anconover]

A 50trim is more around 48-49lb/min. 30lbs/min more? i hope that was a mistype. Im not sure what flow rates of the 54trim, but its going to be right around the same, possibly even less. The turbo itself doesnt have the efficiency of the 50trim, so most dont bother since the 50trim will probly end up making more power because its more efficient.

The 54 and 57 trims just arent a popular combination, the 50trim is extremely efficient, and has been proven to do upwards of 500hp, and then most go onto the 60trim, 60-1 or 56trim from there.

The difference between the SCM50 and SCM32 is very small, im sure itll put down the same numbers as you would have on the scm50, because i doubt youd be looking to max either out.

 

[TurboSpoolinIns]

It's actually a bit bigger than the 50 trim, probably flows 30lbs./min. more.

I hope that was a typo.

Here's a flow chart for the 50 and 54 trims

54 trim:

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50 trim:

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As you can see, the 54 flows a tiny bit less.

EDIT: links fixed.

 

[gasguzzler]

Where did you get the compressor maps? PTE doesn't release them.

 

[RedGsxEclipse]

They look like turbonetics maps.

 

[dsmrunaway1]

hey vrman not to take this off subject but i noticed u have a c02 sprayer worth it or not ?? i wanna get one any real noticable diff with it ...dyno numbers ?

 

[VRMAN]

Thanks for the responses guys, guess we'll see what this turbo can do.

dsmrunaway and sweet97: I just bought the IC sprayer this week, haven't installed it yet. I'll let you know how it goes

 

[sweet97]

Please VRMAN a link to the sprayer supplier. Thank you, mark and the other fellow thanks you too! The 54 trim is so close to the 50 trim that you will see no negative response to it but have the potential to eek out a bit more juice! Good Luck! Mark

 

[Jeff_Jeske]

I am looking for an update on the SCM32 purchase you made.

Do you have any logs to show flow?

 

[VRMAN]

No real update I can give you right now, car has been down for awhile with more cosmetic upgrades and what not. Dyno'd 305whp/299tq at 20psi and pump gas but the car kept bucking and stalling at 5800rpms, so I never got a clean run or indicator of power.

I think the turbo should perform much like a 50trim with a slightly better top end. As soon as I can work out a few bugs and get a healthy tune, I'll let you know how it performs

 

[EnticivEclipse]

VRMAN,

how much was ur turbo? where?
divider cut or uncut?
what o2 housing you using? ported?
install kit? which one?
oil feed? whered u tap?
boost creep? details?
full boost @ what rpm? psi?
spools @ what rpm?

thanks

 

[DSM mechanix]

I think the turbo should perform much like a 50trim with a slightly better top end.

The 54-trim flows less and is less efficient than the 50-trim at higher boost and airflow.

 

[VRMAN]

VRMAN,

how much was ur turbo? where?
$800 www.importpoweronline.com

divider cut or uncut?
I ran external so uncut

what o2 housing you using? ported?
2.5" mandrel bent, ported. BEST o2 housing period, cheaper price but better made than Punishment racing or any other. PM me for the guy's info if you want one. My best purchase yet.

install kit? which one?
Yes, oil return line and what not. Done by Road Race.

oil feed? whered u tap?
Yes, SS oil line, not tapped to head, to oil.

boost creep? details?
No creep, running 40mm external w/3" turboback.

full boost @ what rpm? psi?
Untuned badly, 21psi at 4300rpms. Don't go by this data, untuned is an understatement.

spools @ what rpm?
Starts spooling in the low 3000's

thanks

 

[VRMAN]

The 54-trim flows less and is less efficient than the 50-trim at higher boost and airflow.

Why is the 50trim rated at 450hp and the 54trim at 480hp?

 

[DSM mechanix]

Why is the 50trim rated at 450hp and the 54trim at 480hp?

Because PTE is weird like that.

Take a look at the maps in post #8, the x-axis is airflow.

 

[VRMAN]

Do you think good power on pump can be made dsm mechanix? Looking at my mod list and what not....

 

[DSM mechanix]

Do you think good power on pump can be made dsm mechanix? Looking at my mod list and what not....

Good power on pump can still be made, its all in your tuning and set-up. I would reccommend investing in a good efficient FMIC, which will help aginst the lower efficency of the 54-trim.