Highest boost run on PTE 50trim internal with cut divider?

Smoothbodyman · Apr 15, 2004

Damn I hate picking my turbo upgrade out. I need to know what typically is the highest boost attainable with the PTE 50 trim turbos running internal gates. I will have no problem running 20 psi on pump in street tune so creep isnt the issue, but I want at minimum 25 or preferably 27 psi on race gas at the track.

It seems the cost of doing the 3052 setup is right about 2000 with their 2 1/2 O2 and a new manifold. And the cost of doing a 50 trim style turbo externally with a Victory O2 is still over 1600, which is close enough to 2000 that I will go either PTE internal if it will work, or 3052. Thanks for your input.

badboy93tsi · Apr 15, 2004

I've been in your situation not too long ago. I bought the VP O2 w/ Tial40mm gate dump-to-atmosphere before FP3052/65 came out. If you think you never ever going to upgrade your turbo again, then get FP setup. However, if you planning to play around with different turbos setup, go with VP setup like I did. With VP setup,you can run all PTE turbos (all at the same price regardless of turbo size), Green, Red, SBR GT 10-14, 20G...etc. If I had to start all over again, I wouldnt know which to choose. I guess I would just toss a coin

Smoothbodyman · Apr 15, 2004

In alot of ways its great we have so many options now compared to just a couple years ago, but its almost information overload. Ive been tossing this around for a long time, and it will be the only turbo I buy so that makes me even more cautious.

bigjangin · Apr 15, 2004

it depends what is more important to you, all out performance or money. You can pick up an internally gated 50 trim for pretty damn cheap and it will do the job well. If you have a hard time holding boost at higher levels, it comes with the adjustable wastegate arm which could help. I cant offer any experience as ive only had mine up to 21psi. If you are going for all out performance and you have the money, I'd definitely go the FP route. I'm cheap so a 50 trim is enough for me.

Taboo · Apr 15, 2004

Smoothbodyman said:
I will have no problem running 20 psi on pump in street tune so creep isnt the issue, but I want at minimum 25 or preferably 27 psi on race gas at the track.

Hmmm.. Why? :dunno: It doesn't matter how many psi of boost one runs but how much horsepower he makes (that's why turbos are not rated by pressure ratio but airflow) - and overspeeding the turbo while turning it into hairdryer just for the sake of running some particular boost level doesn't help. :dunno:

44pirate · Apr 15, 2004

I've run my PTE 50trim, internally gated divider cut. at 26psi with c16 at the track. No problem 12.3@112

Smoothbodyman · Apr 15, 2004

Re: Re: Highest boost run on PTE 50trim internal with cut divider?

Taboo said:
Hmmm.. Why? :dunno: It doesn't matter how many psi of boost one runs but how much horsepower he makes (that's why turbos are not rated by pressure ratio but airflow) - and overspeeding the turbo while turning it into hairdryer just for the sake of running some particular boost level doesn't help. :dunno:

From looking over the compressor map on the 50 trim wheel it looks to still be in a good efficiency range around 25 or so psi, although it is right smack in the middle of its efficiency at about 20 psi. I dont claim to be an expert at reading a compressor map or anything either. Thats why it makes such a great street/pumpgas turbo, but Im sure you dont need me to tell you that. I just want the ability to turn the wick up a bit when I hit the track and throw race gas at it.

When I ran my 12.5 on the big 16g with the 6cm housing I was unable to hold more than 21-22 psi past 5k because I put the big 34mm flapper on there and ported the crap out of it. I will only hit the track a couple times a year or so, but I dont drive it everyday either. It would just be dissapointing to have 1200 invested in a turbo setup that didnt do all I needed it to in the long run, especially because of the cut housing preventing going external later, at least off the O2.

anconover · Apr 15, 2004

hmm, being able to run 30psi on a turbo isnt going to make you any faster neccessarily. The 50trim has gone into mid 11's on pump gas (green) and has done upto (dres chart but i blelieve it has a t350 turbine) 503whp on pump gas. If your looking for somethin faster, or wanna make 9,000whp choose a different turbo. You cant choose a turbo by how much boost its capable of running, thatd make no sense.

Smoothbodyman · Apr 16, 2004

I didnt say I wanted to run 30 psi, I didnt say I wanted insane power. I simply asked at what boost level did the internal flapper blows open on the internal PTE 50 trims. I know what the turbo is capable of, thats why I am considering purchasing one. I am not picking a turbo based solely on its ability to run high boost, like I said I only go to the track a couple times a year. I dont see how wanting to know what boost level a turbo is capable of holding isnt a relavant question in making my decision.

If you run your turbo at 20 psi on the street, and then go to the track without increasing your boost on race gas that doesnt make sense to me.

Like I said my decision is down to 2 choices, one cheap that will be more than enough for my goals providing it can hold enough boost to at least allow for experimenting at the track. The other going full 3052 because running an external on a much less capable turbo is only a couple hundred less than going with this bad-boy (unless of course you get one of the self-cracking tubular setups...... no thanks).

stickers · Apr 16, 2004

I have a ETE32(to4e 50) with internal gate and the car works awsome. I run 12.2-12.5 115-118mph at 22psi and 94oct pump gas.. great turbo and more then enough for the street/track. I had it up to 26psi(max on prefecB) for few seconds and it pulled like crazy past 7000rpm...

ShapeGSX · Apr 17, 2004

44pirate said:
I've run my PTE 50trim, internally gated divider cut. at 26psi with c16 at the track. No problem 12.3@112

Thats a whole lot less power than I would expect out of a 50 trim at 26psi. 26psi out of my 16G got me 118mph.

Van · Apr 18, 2004

Do it once and do it right.

FP3052 in this case.

With this choice you'll have great spool-up characteristics, matching the 50-trim setup.

You'll gain MUCH BETTER boost control down low and up high. You'll also retain the turbine efficiency because you're not doing a fucking hack job to fix something that doesn't work right in the first place.

You won't ever have to worry about the flapper being blown open with the TiAL.

It sounds like it would be perfect for all of your goals.

Some maintenance jobs on the car will be much faster and easier with the v-band clamps that the 3052 utilizes.

It's lighter and is way less prone to cracking.

Transient boost response is better.

Get a SS O2 hsg that'll route the TiAL back into the dp and you will not have the noise that comes with an ex gate. This makes emissions easy and keeps the car quiet while maximizing boost control, turbine flow & wg flow efficiency.

Forced Performance has excellent, time proven, customer service and track proven turbos.

If it were my money, I'd do some searching on the subject of thrust bearings on them other turbos, but that's just me.

redawdturbo · Apr 18, 2004

The 50trim, stage 3 turbine, .63 turbine housing combo has been proven make near 500whp around 30 psi. I wouldn't say it's a much less capable turbo than the fp3052, but the fp3052 does come with a few more perks. Ballbearing, anti surge compressor cover, and a very nice custom turbine housing thats specifically cast for the gt30 turbine wheel. FP also makes a PTE style 50 trim that's internally gated, you could email them and ask them about the flapper being blown open. They may be able to do a higher pressure internal gate for you.

There are some rather ghetto tricks you can do if you have problems with the flapper being blown open. You can add a spring to the flapper arm to increase the force to hold it closed, or bend the wastegate bracket to add more preload.

Smoothbodyman · Apr 18, 2004

I actually was already doing some searching on the subject of the PTE turbos and reliability. I came away not so pleased and have decided not to risk it. I have come up with another option I am considering as well besides the 3052.

AGP's customer service and quality has been praised time and again that I have seen and their RS49 should do everything I need, and its only 800 bucks. I would then fab up my own external flange off an Evo manifold, routed back into the downpipe. I figure if I do all the work and get it all tacked into place I can take it to someone with a TIG welder and have a nice clean solid welds put on it.

I tried a little searching on people's experiences with welding a flange on the #1 runner and didnt come up with any long term impressions. I know its less than ideal to weld 2 metals together that are so different, how does this hold up long term?

redawdturbo · Apr 18, 2004

About PTE, i have read that people have had some thrust bearing problems with their turbo's in the past, but it seems that PTE always repaired the turbo under warranty. They have a 1 year 12K mile warranty, which is the best warranty i have seen from a turbo vendor. I've even read a post about someone that unknowingly installed they're PTE turbo with a plugged oil feed line and ruined the turbo within the first mile of driving, and PTE still repaired it under warranty for free. I also read a post about someone who's engine spun a bearing and the metal flakes ruined their PTE turbo, and again PTE repaired it under warranty for free. If these posts are true, then i'd say they have the best warranty coverage of any turbo shop. NO other turbo shop would warranty a turbo under these conditions. Perhaps they can afford to do such warranty work due to the very large size and volume of their business.

centxdsm · Apr 19, 2004

I would pick the pte turbo over a 3052 evry day of the week and twice on sunday. They are capable of similar power yet the pte is MUCH cheaper. I have a pte 50 trim with an un cut turbine housing. I don't get any creep in my set up runinng 13 or 20 psi. people bag on reliability but every post I have seen has been to engine problems or improper instalation (oil supply from the wrong location, no new oil supply line). There have only been a handfull of failures. Plus look at how many of the damn things they have sold. There simply isn't a reliability problem.

Originally, fp sold the 3055 but it simply wouldn't make the power at pump gas boost levels so they switched differnt wheels(i have heard of supply problmes for that wheel(55) but other vendors still sell it). I think that is just the nature of the newer GT line. If you are debating between between the 3052 and a 50 trim your car is probably a street machine and will spend most of it's time around 20 psi.
You jsut have to weigh if the transient response is worth all of the other expense. To me, it's not.

Van · Apr 19, 2004

Smoothbodyman said:
I actually was already doing some searching on the subject of the PTE turbos and reliability. I came away not so pleased and have decided not to risk it. I have come up with another option I am considering as well besides the 3052.

AGP's customer service and quality has been praised time and again that I have seen and their RS49 should do everything I need, and its only 800 bucks. I would then fab up my own external flange off an Evo manifold, routed back into the downpipe. I figure if I do all the work and get it all tacked into place I can take it to someone with a TIG welder and have a nice clean solid welds put on it.

I tried a little searching on people's experiences with welding a flange on the #1 runner and didnt come up with any long term impressions. I know its less than ideal to weld 2 metals together that are so different, how does this hold up long term?

That being said, hehe, I'd have to agree that I've only heard great things about AGP as well. I know their customer service is great too and I've never heard of turbo reliability issues with AGP either.
Fabbing up your own stuff will save you money, but it is full of hassle.
The #1 runner has been used extensively with good results in the past, but it has been more or less decided that mounting the wg on the O2 hsg is a better way.

Dallas J · Apr 20, 2004

Ill throw some AGP props in here.

They apparently had some kind of disaster recently and had to close down. I was unfortunately one of the people who had his order delayed. I ordered a water cooled RS-49, water cooled for road racing. But since it took so long to get the water cooled center and also what ever issues they had at the shop they gave me a gasket and took some money off my order.

They did what they could to try and make up for the hastle on my end.

Good guys I tell ya

-Dallas J

Highest boost run on PTE 50trim internal with cut divider?

Smoothbodyman

badboy93tsi

Smoothbodyman

bigjangin

Taboo

44pirate

Smoothbodyman

anconover

Smoothbodyman

stickers

ShapeGSX

Van

redawdturbo

Smoothbodyman

redawdturbo

centxdsm

Van

Dallas J

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