Going pte scm5031, need advice

[Dsmj89]

I'm currently running the evo3 16g, purchased about 4 months ago, and it's been running great, but then i got to thinking, if i'm going to be upgrading my fuel system and putting money towards upgrading all other misc. parts, i might as well put it to a good cause, and therefore i have decided next year to go 50 trim.

I will be getting a walbro 255 with a aeromotive fpr, but now my question comes down to, what is a good sized injector for the pte 5031 ?
I don't want an injector that will run high IDC's, something that will provide enough fuel but yet operate efficiently, and will an safc2 be suffice to tune it ?

I was thinking about pairing this turbo with a fp mani and a pr o2 housing kit w/ tial 38mm external.
Thanks for any advice and help in advance.

 

[RadDsm]

Well, 650cc is what are you are limited to with the SAFC, which wont get you too far with that turbo.

The combo of manifold/o2/exwg you mentioned is teh secks.

 

[Dsmj89]

Thanks. Well in all honesty i have no problem going dsmlink, i was planning to go that new route anyways.
I just really need to know the perfect injector size for this type of turbo ? And is running it from the OFH ok ?
I read and found no problem with it that way.

 

[RadDsm]

I can't really comment on where to feed it from because I'm not sure, but if you are getting Link, you might as well get 1150cc injectors, or somewhere in that area since you will be able to control them easily.

That will also give you room for bigger upgrades, or e85. It's better to buy once, than twice.

 

[Dsmj89]

I plan to run the turbo on pump gas. Will the sbr cast manifold be ok as well to use wit hthis turbo ?

 

[RadDsm]

I plan to run the turbo on pump gas. Will the sbr cast manifold be ok as well to use wit hthis turbo ?

The stock manifold would work just fine too, as long as it has the bolt on housing.

 

[JusMX141]

There are honestly better turbo choices out there for what you'll be spending, unless you're getting a hell of a deal. With PTE's reliability issues and poor-flowing DSM bolt-on turbine housings, the SCM5031E is at the bottom of my favorite turbo list.

If you feed that turbo from the filter housing without a restrictor, there's a very good chance it will either smoke or be dead within 500 miles.

 

[frankozz]

What makes you say that Justin? PTE themselves recommend feeding the turbo from the OFH without a restrictor. When I was planning on running this turbo I researched a lot and feeding from the OFH without a restrictor is the way to go.

 

[BoostFrenzy]

PTE also says to run their BB turbos from the OFH.....

 

[Rockbmx1]

PTE turbos suck ASS!!!! If you want to get a 50 trim size turbo, save up a bit more and go with an fp3052 or an hta version. PTE turbos don't have the reliablity that they need to be on a DD, but the Garrett counterpart will be better. Also, you can look into getting a BW S258, its a fast spooling JB turbo that is pretty easy on the wallet and it has a pretty good flowing turbine housing. IMO don't buy a PTE turbo, they are more hassle then fun.

 

[blackGSX2g]

I have ran a PTE BB 50-trim fed from the OFH with an oil restrictor since 2005. No problems whatsoever. Dealt with daily driving duty as well as lots of track runs. My oil pressure at a cruise on the highway is around 80-90 psi (need to port my relief valve) and everything is running smoothly.

Oh and per the install guide that was shipped with my PTE ball bearing turbo, it must be fed from the OFH with the included oil restrictor or it will not be covered under warranty. I followed those instructions and never had a problem.

As far as injectors, I'd get DSMlink and run 1k injectors. That will give you enough injector to run gas & e85 if you ever want to. Plus you can upsize your turbo later on and still be safe.

 

[Dsmj89]

Thanks a lot for clarifying that guys.

How about the sbr g50 ?
Is that an equally good 50trim turbo as well ?
Would running my external wastegate off the sbr cast mani that i have be ok ?
It also says that the sbr g50 is an oil only turbo, does that mean it won't need water lines anymore ?

And last but not least, will running a stock 2g ported o2 housing fit and work nicely with the 50trim ?

 

[JusMX141]

What makes you say that Justin? PTE themselves recommend feeding the turbo from the OFH without a restrictor.

Apparently they don't understand how our oil pump system works, and that our cars have the potential to make over 100psi at redline which murders turbos.

Here's some good reading for you on the topic of over-oiling PTE turbos:

http://www.dsmtuners.com/forums/new...who-have-smoked-journal-bearing-pte-step.html

 

[blackGSX2g]

OK, so are we talking journal bearing or BB here? With the oil restrictor on the ball bearing, end oil pressure will have far less of an effect on the turbo. For a journal bearing, I'd definately port the oil bypass and consider a larger restrictor.

 

[RadDsm]

They seem to be kind of hit or miss for quality. My buddy Scotty bought one a year ago that was used, and runs it at 30psi on his DD. Also runs 11.3 on e85 with a stock bottom end.

On the other end, people have shit luck with em.

Justin is right though, there are better choices out there, for cheaper. Unless you are getting a really good deal on one.

 

[roostinds]

I have been running the PTE scm5031 for a year now from the OFH with no reistrictor and have had no problems. I run my car hard too.... Like Rad DSM said its hit and miss. I look at it, best bang for your buck would be to find a holset hx35 on a cummins 94-98 dodge ram. You can find them cheap on the cummins forum. Between 150 to 200 bucks. Buy the BEP housing for 270 and there you go. Non BB turbo with that is compareable to the GT35R power with full spool by 3800-4000 RPM's.

 

[No_Skillz]

Just so you get some idea on injector size, I run a 5031 with 850cc injectors at 25psi, stock displacement. I see about 85% duty cycle at WOT redline.

As for all the stuff about reliability, I'm fed from OFH, no restrictor (non-bb), and I'm about 5k miles with no issues.

 

[roostinds]

not sure if you went with link right away NOSkillz but did you notice a huge difference like from 18 to what you are currently running at 25 psi. I don't have link yet and am running evo 560's right now. Getting ready to throw in some 1000cc injectors and get link v3 as well. Just trying to get a feel of how much of a difference it was for you

 

[Killa_dsm]

Like others have said, the PTE turbo's are hit and miss. I have had mine for quite a while without any problems. When I first got it (used) I fed it from the OFH and it blew smoke. But once I moved the oil feed to the head the smoking went away.

I have been running the turbo at 23-25psi with no problems and plan on upping the boost once I get more meth.

 

[KiNg MaRtY]

I also have a PTE 50 trim BB. Still no problems and I hope it stays that way. I heard the newer turbos had a restrictor on it from PTE when they need one but I haven't confirmed this. I am feeding it from the head.

 

[No_Skillz]

not sure if you went with link right away NOSkillz but did you notice a huge difference like from 18 to what you are currently running at 25 psi. I don't have link yet and am running evo 560's right now. Getting ready to throw in some 1000cc injectors and get link v3 as well. Just trying to get a feel of how much of a difference it was for you

Definitely a big difference. I started at 18psi, and it just keeps providing more power the more I turn the boost up. Still feels like there is quite a ways to go before I use up the potential of this turbo.

And yes, I went with DSMLink right away when I got the injectors.

 

[Boosted98gsx]

PTE copies FP's HTA compressor wheels for their own billet series.

 

[dsm-onster]

And they are less expensive to boot! Great option

 

[Boosted98gsx]

And they are less expensive to boot! Great option

I cannot honestly believe you support the knocking off of another company's product.

You have PITIFUL ethics.

 

[JusMX141]

PTE copies FP's HTA compressor wheels for their own billet series.

I'd have to see proof of better journal-bearing turbocharger reliability from PTE before I'd dump a pile of money on one of theirs; although the Evo guys seem to be having great success using the 6262/6265's on their cars.

I'd like to know what size restrictor PTE is recommending the Evo guys use, and if it's included with the turbos they're selling. An Evo can make upwards of 150psi of oil pressure at the filter housing, and everyone here knows even 100psi can murder a turbo in minutes.