How much different????

[oleBLUE]

I was wondering how much of a difference there is between the standard bearing 50tirm with the 48 a/r exhaust and the one with the 63 a/r exhaust?

What would be the difference in spool time's and what would be the difference in hp around let's say 20/21psi pump gas?

What kind of numbers would they put down at 20/21psi with a stock engine with just all the normal bolt-on's on pump gas?

[turbojonsrt4]

You'll see probably 300-400 rpms of difference in full boost from the .48ar hotside to the .63ar hotside. .48ar 50 trims are badass turbo's for people content with 450ish whp or less. You'll have a great powerband, even with a stock limiter. The power isn't gonna be a huge difference between the two hotsides at that boost level either. The couple of hp lost from the smaller hotside will definitely be made up for in powerband! I'm certain you'd like it better than a 60-1

[lyncoo]

for the street id go 50t .48 ar.

[oleBLUE]

Yea i'm really thinking about the 48 a/r 50 trim. I want a faster spooling turbo than this 60-1. I have the ball bearing one and still don't hit full boost till like 4,000rpm's on the street and like 3,800rpm's on a load dyno. This 60-1 would be better for someone wanting to rev there car out but I just want to stay around 6,500rpm's or less mark. Ever since I rode in kason23's car with the delta 44 it has made me want that faster spoolup time again.lol

[turbojonsrt4]

Quote: Originally Posted by oleBLUE

Yea i'm really thinking about the 48 a/r 50 trim. I want a faster spooling turbo than this 60-1. I have the ball bearing one and still don't hit full boost till like 4,000rpm's on the street and like 3,800rpm's on a load dyno. This 60-1 would be better for someone wanting to rev there car out but I just want to stay around 6,500rpm's or less mark. Ever since I rode in kason23's car with the delta 44 it has made me want that faster spoolup time again.lol

I wouldn't even say that. 60-1 was cool in 1998. There's so many better options now. Take my 6057 for example. It will support roughly 100 more whp than a 60-1 and even my journal bearing .63ar hotside 6057 hits 30psi around 3800 rpms, and I gaurantee the down low response will kill that of the bb 60-1s. Ive had two journal bearing 61mm Precisions and neither one of them would hardly build any boost down low at part throttle driving. The 6057 is 100x more responsive than either of them were.

[oleBLUE]

Quote: Originally Posted by turbojonsrt4

I wouldn't even say that. 60-1 was cool in 1998. There's so many better options now. Take my 6057 for example. It will support roughly 100 more whp than a 60-1 and even my journal bearing .63ar hotside 6057 hits 30psi around 3800 rpms, and I gaurantee the down low response will kill that of the bb 60-1s. Ive had two journal bearing 61mm Precisions and neither one of them would hardly build any boost down low at part throttle driving. The 6057 is 100x more responsive than either of them were.

What is the 6057 rated at hp wise? Mine is the 6031 and it's rated at 590hp. You are right though low end power is not that great, it hit's ok power at the 4,000rpm's mark and that's full boost at 22psi but it don't really come alive till like 5,000/5,500rpm's. I don't understand why these smaller turbo's like the 50trim can out perform a bigger turbo like mine around the 20psi mark and lower.

[turbo666]

4k rpms on a dbb 50trim? That's not right. Something has to be up and effecting your spool in a negative way. I've seen plenty of standard bearing 50trims hit full boost by 34-3500rpms, and I'm talking almost 30psi by then. When I had a .48 50trim I hit 28psi at 3200rpms. Fast spool for sure, but I didn't like the topend loss. I still always recommend the .63 to anyone over the .48 for street or strip.

Another thing to remember is the AGP 50trims spool faster then your typical Turbonetics. A Turbonetics .48 50trim won't hit full boost till around 34-3500rpms.

[oleBLUE]

Quote: Originally Posted by turbo666

4k rpms on a dbb 50trim? That's not right. Something has to be up and effecting your spool in a negative way. I've seen plenty of standard bearing 50trims hit full boost by 34-3500rpms, and I'm talking almost 30psi by then. When I had a .48 50trim I hit 28psi at 3200rpms. Fast spool for sure, but I didn't like the topend loss. I still always recommend the .63 to anyone over the .48 for street or strip.

Another thing to remember is the AGP 50trims spool faster then your typical Turbonetics. A Turbonetics .48 50trim won't hit full boost till around 34-3500rpms.

I was talking about my 60-1 at the 4k. I have the ball bearing 60-1 on right now but am looking at getting a 50trim for the faster spool and stronger powerband for around 20/22psi.

[oleBLUE]

So what kind of numbers will the 48 a/r 50trim put down at around 20/22psi on 93oct pump gas with a completly stock engine?

[ticaaal70]

Quote: Originally Posted by oleBLUE

So what kind of numbers will the 48 a/r 50trim put down at around 20/22psi on 93oct pump gas with a completly stock engine?

Completley stock? Like even stock intake mani/throttle body? Ima have to say about 390ish

[oleBLUE]

Quote: Originally Posted by ticaaal70

Completley stock? Like even stock intake mani/throttle body? Ima have to say about 390ish

I have all the normal bolt-on's and I do have the stock intake manifold with a 55mm machined throttle body.

[ticaaal70]

Yep around 380-390

[SRToad4]

Visit the 50 trim turbo owners thread for info on the turbo, lots of good info in there

[sponsorSRT03]

i run my 50 trim .63 a/r on the streets and there is nothing wrong with spool. i full spool around 3400-3500 rpms and its awesum. Tq w this turbo is Fnin nice. 20 psi on stock motor, u'll be fine. depending on ur tune, u'll hit high 300's. but according to other people in the 50 trim dyno thread. im doing about 380whp and im at 28psi.

but personal opinion, at least a .63 a/r, the couple hundred rpm would not make that much of a difference.