t3 50 trim

im upgrading my turbo on my 95 gsx. Does anybody use a garret t3 50 trim turbo, and if so, what boost do u run and when does it fully spool. another turbo i am looking at is the evo3 16g. same question at above. Also, have u had experiences with them and perfer one, or vis-versa. i just want a fast spooling turbo with around 22 psi. opinions guys please.

also, with the 50 trim, am i going to have to change anything, due to a larger turbo?

and yes i have researched, i just want opinions. and i wasnt sure about the second question.

thanks

Just for the sake of accuracy the 50 trim we would run would be a t3/t4. It's a touch larger than a 20g, practically the same thing really, so it's one step over a evo 16g. I just mention this because a lot of poeple will post things like "should I get a 14b or a T88?" :D It's a fine turbo, I ran a bolt on 50 trim (tdo6 hybrid) for some time and it worked well. It's good for more like 28-30 psi though, so if you only intend to go to 22 psi the EVO16g will do that and get there sooner. If you plan to run mods like cams or intake manifold, or plan to run higher boost at the track on race gas for example, the 50 trim may make a little more sense. You could argue for either turbo depending on what you really intend to do with it.

Edit> Both turbos will require the usual supporting mods. Airflow rates are similar between the two, but it could be the difference between one set of injectors and the next one up. You'll want 650s for the evo16g and 750s for the 50 trim. 750s are hardly workable on an AFC, so that could have some influence as well. Etc.

yes i plan on having this my street car, but i want to have some serious power for gragging. i plan on putting racing cams, and possibly a racing intake manifold. i only plan on running 22 psi, and i want it to spool fast. so in my case, driving the car around town, but also racing it, would the 16g make more sence to run?

also, u mentioned race gas, what difference does that make in my case?

ii forgot to ask, running 22 psi at some times, what kind of engine reinforcement am i looking at for my 95 gsx. i was planning on dsmlink for tuning, and ARP head studs. what esle would i need for the sometimes running 22 psi?
thanks

You'd probably need a better headgasket. i've seen people lift their head from way less boost than 22.

Only with knock. I was running the sock headgasket up until I sold the car (11.3 at 126 at 3300 pounds, 29-30 psi on a 2.3 liter).

WIth cams and an intake you'll be lucky to hold that 22 psi to redline on the 16g. Not that thats a bad thing, it will stil make the typical 16g power, you're just maxed out. The 50 trim would make more sense if you wanted to raise the boost on race gas at the track. Race gas doesn't make more power, but it lets you run more boost thereby allowing more power to be made safely. DSMlink is a good idea for sure. Otherwise you're looking at fuel system upgrades, the usual, injectors, pump, and regulator. The drivetrain will need beefing up, but I tend to recomend doing that as you go unless you're made of money and can do it all up front for piece of mind.

I just wanted to clarify when and what needs to be built on a tranny. Would a stock tranny, axles, driveshaft, and rear end be able to take 400hp? 450? 500? Could you do your own tranny builds like shep does? Where would you get the parts?

Only with knock. I was running the sock headgasket up until I sold the car (11.3 at 126 at 3300 pounds, 29-30 psi on a 2.3 liter).

WIth cams and an intake you'll be lucky to hold that 22 psi to redline on the 16g. Not that thats a bad thing, it will stil make the typical 16g power, you're just maxed out. The 50 trim would make more sense if you wanted to raise the boost on race gas at the track. Race gas doesn't make more power, but it lets you run more boost thereby allowing more power to be made safely. DSMlink is a good idea for sure. Otherwise you're looking at fuel system upgrades, the usual, injectors, pump, and regulator. The drivetrain will need beefing up, but I tend to recomend doing that as you go unless you're made of money and can do it all up front for piece of mind.


ok so you were running 30 psi on stock gasket and no upgrades? my goal is to reach 11 sec 1/4 mile by spring. would 22 psi get me there with a 16g? or should i just go with a 50 trim turbo? im a little confuesed on which one i should get for what im looking for. u said earlier that the 50 doesnt spool as fast as the 16g, but makes more psi. what rpm does the 50 trim spool at on 30psi? also, with racing gas... i can just put that in my car and be safe not worrying about anything or what? 95_gsxracer plz help, u know so much! haha

I just wanted to clarify when and what needs to be built on a tranny. Would a stock tranny, axles, driveshaft, and rear end be able to take 400hp? 450? 500? Could you do your own tranny builds like shep does? Where would you get the parts?

The thing to keep in mind is that when you get a "race" tranny built, assuming it's not a dogbox or something serious, all of the parts used are still stock parts. Just a combination of the good stuff. The only part that is really prone to breakage is the center diff, so you will see many poeple that need a rebuild just do a basic rebuild plus 4 spider or similar center diff. What I had done in my 95 tranny after I did the center diff was the 1g 3rd/4th gear set, new intermediate shaft (just because I broke mine), billet forks (which didn't last long anyway), and all the usual rebuild stuff shep does. After 5 years of hard racing (175k miles) I never had to replace any axles, tcase, driveshaft, or rear end.

ok so you were running 30 psi on stock gasket and no upgrades? my goal is to reach 11 sec 1/4 mile by spring. would 22 psi get me there with a 16g? or should i just go with a 50 trim turbo? im a little confuesed on which one i should get for what im looking for. u said earlier that the 50 doesnt spool as fast as the 16g, but makes more psi. what rpm does the 50 trim spool at on 30psi? also, with racing gas... i can just put that in my car and be safe not worrying about anything or what? 95_gsxracer plz help, u know so much! haha

There is a lot being asked here, and since I can't give half assed answeres it would take longer to reply than I have left in my break :) But I'll try to briefly touch on all these points. I was running 30 psi on the stock gasket, but I would not say I had no other upgrades ;) The only one that really mattered though is the ARP studs, and the tuning (knock is what blows gaskets, not power). 22 psi on a 16 isnt going to get you 11s in a full weight car unless you are running cams and intake manifold. In other words, the turbo is completely maxed out (evo 16gs taper to something around 20-21 psi at redline with cams and manifold, but a big part of that is the internal gate also). Try not to think of things in terms of boost pressure, it's not directly related to power (but it is usually directly proportional). Airflow is the better measurement to go by. An EVO3 16g maxed out at ~42 lbs/min can put you in the 11s with perfect tuning and perfect driving. A friend of mine is running 11.5 on that turbo in a 1g, but that is far from the typical result ;) At 25 psi I Would expect full boost on the 16g around 32-3300, and the 50 trim around 37-3800. Not too bad of a difference. If you really want 11s, the 50 trim might give you a better chance. Race gas simply allows you to run more boost and more aggressive AFRs and timing values (to a lesser degree than AFRs). It will destroy a cat in very short time. O2 sensors will survive the leaded fuel just fine as long as you put at least about 1000 miles on the sensor with pump gas to get a coating on it for protection. It's a bit expensive, the Sunoco 117 octane I run is up to 9.50 a gallon (but I only use 1 gallon for a day at the track). But it's really the only safe way to put a mild setup in the 11s, or to completely max out whatever setup you might have. The difference tends to be around .5 seconds and 5 mph between the two fuels.

Alright, back to work...

holy shat man u know your stuff! i see you live in mass. i live in NH right near the boarder... do u go to new england dragway at all? if u r this summer i would like to meet up with you.

I go there almost weekly. When it opens in April I'll be there in the white Evo RS. Be sure to check out the local group, www.newengdsm.org/forums.