MPR

^Indeed, but just not with a t3-50 trim...

WORPeclipse

I was wrong the turbo is a Garrett model TB0322 60trim .60 ar comp .63 compressor. It is from a early T-bird.

MPR

Couldn't find much info on the TB0322 other than it was found on the 2.3L 4cylinder engine in the t-bird and stang. Couldn't find any compressor maps either...

Apparently they are only good for about 325hp, so this turbo still isn't going to get you to 350... need to go bigger. :P

WORPeclipse

Anywhere between 300 to 350 works for me. It is a DD. Right in the middle at 325 would be nice.

I dont have the rest of the numbers off it yet. Just those and it got me the basic specs to it. Once it gets here I will be puttin new bearings and seals in it.

motoxman

Ive seen Mitsu' 14bs go over 375 on the dyno and they are only rated to 300... Im not saying they will last very long at that level but, they can be pushed to that point... That being said, His turbo setup should be fine... The majority of it is in the tune and how close to the ragged edge he wants to run... Safely, he should be fine to his HP goals... The old turbo maps for his turbo either aren't available or easily found. But there are 2.3ltr engines built using nothing more than the stock turbo and making over 400... How long they lasted is well... debatable at best... the VE for the 1.6ltr d series at 9:1 compression and at basically sea level will help his cause... I still stand behind what I said earlier... With his setup he can potentially hit his HP goals... Safely... The fact that his turbo is .60 A/R cold and .63 A/R hotside puts it in the range of the super 60's capabilities and there are TONS of cars over 350whp with that setup... Yet they also are only rated to 325whp...

MPR

The best you could safely get out of this turbo would probably be no more than 300hp. When you're near the edge of a turbo's capability, it's operating much less efficiently. Because if this, the air coming out of the turbo, (though it may be enough volume flow to run the numbers on the dyno), is much hotter, and that isn't good for power, reliability or the internals.

Looking at the compressor map for a similar turbo to the TB0322, at 300hp you'd be at approx 74% efficiency from about 4500rpm to 6500rpm which is pretty good. As a general rule of thumb, you don't want to drop much below 70% efficiency since below that point the air heats up substantially. So that turbo could work well in providing you with enough air efficiently to make 300hp with your setup.

The best thing for reliability and dependability is to run a turbo at or as close to it's peak efficiency range for as long as possible. This ensures cooler/denser air coming into the engine which will allow you to be able to run more timing etc.., all which helps contribute to make more hp, safely.

motoxman

MPR... I will agree that the .42A/R cold .48 A/R hot side "50" trim turbo from Garret would only be good up to about 250whp at best... It would however have been a great midrange street turbo with spool up practically just off idle (ok 17-1800rpm range) and been quite fun from stop light to stop light... Heaven forbid he really try to push it on the freeway... It would have been gasping for air above 6k... 28lbs/min at 17psi in the 68% efficiency range would not be a good combination without a dam good intercooler or alot of extra fuel and retarded timing in the -3* per lb/boost just to keep from pre-detonation... Kinda defeats the purpose of trying to push the little turbo...

motoxman

My personal choice for this same HP goal for my Del Sol is using the typical Vitara build (but bored to 76mm due to a previous 75.5mm build with oiling issues) and a t3/to4e 50 trim... It will be slightly laggy but should spool up around 34 -3600 rpm and pull to redline... That being said, I have alot of work to do for traction issues below 3rd gear... Fortunately I actually know how to "Drive" a car instead of just slamming the gas to the floor and hanging on as so many of the younger generation tend to do... They just dont realize that the throttle is not an on/off switch... I have tentatively named them "togglers"... LOL... Either way, the lower HP car can actually be faster because of the traction issues with FWD...

To the OP... Good luck with your build... Take care of it and enjoy it and keep up good maintenance and it will last you for quite sometime... Anythings less than that and we will be reading about your next build very soon...

MPR

^What size engine were those 14b's on pushing 375? I would bet in those conditions, the air coming out of those turbos was quite hot...An engine with that kind of setup would not be able to sustain too many long-period pull-power full-load runs I would suspect...

The OP wants a dependable/reliable DD 350whp from a 1.6L. Maxing a turbo will not make for a dependable/reliable setup... This engine needs a decent sized turbo to provide enough air to make that kind of power and do it efficiently, not just do it barely and inefficiently. That is, if you want it to be safe and reliable.

So I agree with what you're saying, but 350whp safely from this engine with the TB0322 might be a stretch...

WORPeclipse

Hell if I need to I run meth inj on it at a certain boost level and higher. I already have everything to run a meth inj setup cause I was building one for my eclipse. I do know how to work the throttle.