t3 questions and my kat setup

Information on the naturally-aspirated KA24E and KA24DE engines.
s14kaibigan
Posts: 239
Joined: Wed Mar 26, 2003 7:23 pm

Post

Okay, this may be a repost, but through the many, and I mean many, posts that contain "t3" I couldn't find a definitive answer.

What is the difference between the t3 super 60 and a regular t3 .60compressor and .48turbine? Is there one? I just bought a t3 with stampings of .60 on the compressor side and .48 on the turbine side. On the compressor side it also say "M11" beside AR .60 and GARRETT in big letters. On the intake, there is an elbow that says "ford" on it and the exaust has the 5bolt elbow on it also. It's watercooled and has an integral wastegate. I hear that the Thunderbird turbo coupes has this turbo as well as a .60/.63. Being new with turbos, I don't exactly know what the trim is, I just sort of know how to read the AR for each side. Without actually feeling one run or seeing any charts, I feel this should spool pretty low (like 2700-3000), but lack anything past 6000 (which I really don't go past anyways). Am I correct to assume this?

With this turbo, I'm going to run 370cc injectors, hacked maf, walbro 255, starion fmic w/ custom pipes, custom log-style manifold without external wastegate pipe, and a manual boost controller (possible run in-cab). Being a log style manifold, I feel there isn't really an efficient location to put an external wastegate, but I've heard of people removing the integral and welding a pipe in its place to run an external. Is this possible and efficient?

Also, being a t3 and running with a starion i/c I probably wouldn't feel comfortable raising the boost past 6-7 psi due to heat and detonation. This is going to be a daily driver with some spirited fun on the weekend type setup. I'd like to get about 230rwhp.

Basically, the point of this thread is to find answers to a couple of questions I have, explain my setup/goals, and receive any insight or criticism on it also. Please let me know what you think.


User avatar
erich
Posts: 288
Joined: Mon Nov 11, 2002 1:37 pm
Contact:

Post

I'm using a modified starion core. New end tanks with 2.5" pipes. I also run ~16psi. It has a bit extra pressure drop but it does cool well.

HolyShiznit
Posts: 732
Joined: Wed Jun 04, 2003 6:57 am
Car: Working on my car

Post

Dude the JGS tools is a log manifold and you can just put a wastegate elbow on it. Don't count ya'self out of a external wastegate.

s14kaibigan
Posts: 239
Joined: Wed Mar 26, 2003 7:23 pm

Post

Where did you get teh endtanks? The one I have is bashed up a bit and I'm afraid it might mess up the flow.

User avatar
erich
Posts: 288
Joined: Mon Nov 11, 2002 1:37 pm
Contact:

Post

I made them out of 1/8" 6064 aluminum. Or rather Don at PDM made them, then I cut most of them off and re-did what I asked him to do so it would fit. Maybe I should have measured before I paid him to do the work.

User avatar
TopStreet240
Posts: 224
Joined: Sun Jun 08, 2003 5:22 am
Car: Cars! movies, books,
Contact:

Post

I dont think your going to get 230 rwhp on 6-7lbs. You might but i would guess a little lower, just tune the car out right and you can run like 12 to 15.my car is getting tuned on 12 lbs and then 15-16 when i really want more power

HolyShiznit
Posts: 732
Joined: Wed Jun 04, 2003 6:57 am
Car: Working on my car

Post

Orion is running 8 lbs and getting 250ish whp...... so it is semi-logical that at 6-7 psi he should be close to or around 230. :)

fritts
Posts: 93
Joined: Sun Apr 13, 2003 5:12 pm

Post

With a T3/T4 or T4 turbo ya you can run 8 psi and get 250hp. But a T3 is so small it gets chocked off at higher rpm and is not as efficient as the other turbos. Overspinning it turns it into a sort of Heat Pump. Heat is the enemy of power.

User avatar
TopStreet240
Posts: 224
Joined: Sun Jun 08, 2003 5:22 am
Car: Cars! movies, books,
Contact:

Post

Im sorry to say this but the amount of boost you run has almost nothing to do with how much power you put down. So many other things are put into consideration, what kind of exhaust you are running, what intercooler set up you have, what kind of turbo (a t25 by garret will put down about 230hp at around 15psi.) and the efficency of the turbo. Many things must be factored in. That was the only reason I said I would plan on making 230rwhp on 6-7lbs.

trpower7
Posts: 1259
Joined: Wed Jul 24, 2002 9:57 am

Post

My god. The amount of boost you run has ALMOST NOTHING to do with how much power you put down. So 4PSI and 14 PSI will put down the same power. NO NO NO NO NO NEVER. Factors like intercooler size and efficiency, fuel management, etc, will somewhat alter these numbers, but as a rule more boost = more power. People push their itty bitty T25s past the EFFICIENCY RANGE (meaning the turbo is putting out higher boost but also a lot of heat) and still make more power. I can't believe the statement "the amount of boost you run has almost nothing to do with how much power you put down" left someone's fingers....................

U12 2NR
Posts: 367
Joined: Sat Mar 22, 2003 4:29 am

Post

erich wrote:I'm using a modified starion core. New end tanks with 2.5" pipes. I also run ~16psi. It has a bit extra pressure drop but it does cool well.


I've been looking at the Starion intercooler and perhaps you can help me. I would like to know what sort of pressure drop to expect. Thanks

andrave
Posts: 3264
Joined: Mon Apr 07, 2003 10:00 am
Car: 1989 Nissan 240SX Coupe
Contact:

Post

for the price of a starion plus modification why not just get a decent aftermarket one? great deals on them a lot, especially used...

U12 2NR
Posts: 367
Joined: Sat Mar 22, 2003 4:29 am

Post

Starion intercoolers are cheap, price range is $100-150. The starion intercooler is comparable to many current aftermart coolers. The core is 18x8x3" and the end tanks are aluminum. It doesn't require much modification to work at all. Basically just one end tank pipe needs to be modified. In any case if someone wanted it for just the core itself then it's still a good deal, making end tanks is pretty much DIY for competent enthusiasts.

User avatar
TopStreet240
Posts: 224
Joined: Sun Jun 08, 2003 5:22 am
Car: Cars! movies, books,
Contact:

Post

trpower7 wrote:My god. The amount of boost you run has ALMOST NOTHING to do with how much power you put down. So 4PSI and 14 PSI will put down the same power. NO NO NO NO NO NEVER. Factors like intercooler size and efficiency, fuel management, etc, will somewhat alter these numbers, but as a rule more boost = more power. People push their itty bitty T25s past the EFFICIENCY RANGE (meaning the turbo is putting out higher boost but also a lot of heat) and still make more power. I can't believe the statement "the amount of boost you run has almost nothing to do with how much power you put down" left someone's fingers....................


I will agree with you, and i should not have said it the way i did, but you can not just throw a psi number out and have a horsepower figure. that is all i really ment. and depending on the t3 the person is running high boost may equal no more power than low boost because of the heat the turbo is making. I did make the statement a little more powerful than intended but only to prove a point.


Return to “KA24E / KA24DE Forum”