T3/T04b (I searched...found nothing)

[KATwo40]

I'm still learning to read compressor maps, and I'd love for someone to help me out on this one...

I have an opportunity to purchase a T3/T04b V-trim, .60a/r, .63 trim compressor, .63a/r turbine housing brand new for pretty cheap (from a shop, not individual). This would ultimately cure these used turbocharger woes.

I'm lookin' to make 300whp, or slightly above. The T04b V trim good for this at decent boost (12-14psi)? Setup will be intercooled, of course, and the intercooler shows a pressure drop of around .5 psi on my system.

This will be a car that is daily driven, autoX'd and sometimes drag raced for fun, nothing serious. Hopefully I'll also get it on a couple twisty tracks here and there.

Thanks!

[turbo2nr]

im going the run about the same turbo, i belive its the same specs.

my boy had it on his 240sx before, on 10psi with 370cc injectors fmic and using a safc he made 252whp. the intercooler was a cheap e-bay and didnt flow well. he said he made boost at about 2600rpms cant rember if it was full boost or that was when the turbo started to spool. it was a good turbo used it and was happy with it. i believe it can make about 375 whp.

[Edub1]

I still have for sale a T3/T04E 50 trim rebuilt by Garrett with a factory seal on it. It has a .68 Turbine and a .50 compressor. I was going to install it but I decided to downgrade on account of cost.

KATwo40, how much are you looking to spend?

[uvamosk]

How much you wanting .... for that turbo and Can that thing 400WHP to 450WHP

[Chezedik]

It's the turbo I am going to run, maps out to about 350HP at 10psi. I am excited.

[KATwo40]

It's the turbo I am going to run, maps out to about 350HP at 10psi. I am excited.

??? Which turbo? I mapped them out using Corky Bell's Maximum Boost book as a guild and showed the T04E .50 to be around 300ish at 12-14psi and the T04B V trim to be around 280ish at about 12psi. Am I missing something here?

[KATwo40]

I still have for sale a T3/T04E 50 trim rebuilt by Garrett with a factory seal on it. It has a .68 Turbine and a .50 compressor. I was going to install it but I decided to downgrade on account of cost.

KATwo40, how much are you looking to spend?

No offense intended, but I'm pretty sure I'll NEVER buy another used turbo again. After three purchases, all of which needed complete rebuilding, I'm burnt out. It'll be new from here on. But, thanks anyhow.

Oh, and I'm not spending more than $650 on a new one. I can get a T3/T04E .50, .60 a/r comp., .63a/r turbine for $650 at Pheonix Turbo. Also, I can get a new T3/T04B V-trim from a local dealer for $450. I'm most likely going to hit the T04B. This car is going to be daily driven/autoX'd/occasionally drag raced, so I don't mind the slightly less inefficency for a little lower boost threshold.

Thanks again for all the help peeps.

[Chezedik]

This is the site I have been using:http://www.rbracing-rsr.com/turbotech.htmlBut then again, I am not looking for a 1000hp, where did you find your map, that could be the difference.

[KATwo40]

I looked at the T04B V-trim on that site...just like my map.

I'm pretty sure that it's not 350hp at 10psi, man. Should be more like 250-260hp at 10psi.

[Edub1]

My turbo isn't used. It's remanufactured by Garrett and it has a factory, tamper proof seal attched to it. I had it upgraded at Superior Turbo here in Detroit and I have the recipt. You can visit their web site.http://www.superiorturbo.com I think.

Anyway, the T3/T04E 50 trim is the turbo of choice for the KA up to about 450HP. I was shooting for 300HP but pulled my plans back to about 225HP because of cost. I have about $450 into this turbo. It is unused and I'll take $400 shipped. I can send pitures.

[KATwo40]

Please send pics to: [email protected]

Thanks.

[C-Kwik]

It's the turbo I am going to run, maps out to about 350HP at 10psi. I am excited.

The turbo can acheive this, but the KA can't with stock redline and cams. For any given pressure, an motor can only flow a fixed amount of air for a given RPM. With more efficient turbos than the V-Trim T04B, people are hitting 350HP around the 15+ psi mark.

When you map a turbo, you have to map out the max airflow the motor will be able to pump at the given boost and that will be a limit as to how much power potential the motor has for that boost level. Trying to predict power output outside these parameters is a recipe for disappointment.

[Chezedik]

Yeah, I spent all night mapping after this, but I still have a little left to finish. Numbers aren't looking as good as they did when I decided that that was what it was capable of just before it choked at 10psi. So I will let you know. 250-280 is fine for me. I just want to have something as fast (or faster) as a S2k.

[C-Kwik]

Any reasonably sized turbo at 10 psi will probably get you faster than an S2K. Getting on a freeway onramp once following an S2K, I had to back off slightly to keep from getting too close to him. I was only running 6.5 psi on a T04B. I pulled past him slowly once we got on the freeway.

[Chezedik]

May I email you?

[C-Kwik]

Of Course. [email protected]

And if you happen to catch me on AIM, feel free to hit me up: CKwik240

[nismofly]

would this be considered in between a t3/t04e and a t3 super 60?

like...will it spool a little better than a t3/t04e but make a little more power than a super 60

[KATwo40]

It won't spool any faster than a T3/T04E .50. Basically, the T3/T04B is just older technology (like 20yrs old) than the T04E and is less efficient.

[Chezedik]

It's max flow is slightly higher too, isn't it?

[KATwo40]

Max flow is higher, yes, but the max efficiency range of the T04E .50 covers a much broader lb/min range over a larger range of PR. Also, the T04B V-trim has a surge line that leans pretty hard to the right.

The T04E .50 is simply a more efficient operator. It's better all the way around. Remember, max flow doesn't mean squat if you're at 50% efficiency. The T04E .50 at max flow is still around 60% efficiency, still higher than the T04B V-trim at the same flow rate.

[nismofly]

It won't spool any faster than a T3/T04E .50. Basically, the T3/T04B is just older technology (like 20yrs old) than the T04E and is less efficient.

back to the t04e for me again i guess

[nissanfanatic]

I was running a T04B at 11psi on a revhard/on center setup and trapping 107.4mph.

[nissanfanatic]

And actually, a pretty decent tubular manifold will free up quite a bit of flow on the top end.

[KATwo40]

Yeah, man, the T04B isn't by any means a BAD turbo. There's a reason 20 year old technology stays around...because it's pretty darned good.

[Chezedik]

Well, for my money (which it was) I could get this turbo for a little less. But what would be a good stepping stone for a 350hp with relatively low boost?

[Edub1]

Cheezdick, have a look at my Oil Drain Plug post.

[KATwo40]

T3/T04E .50 .63a/r turbine hands down. If you can afford to wait and get the right one the first time, you won't be disappointed.

[Edub1]

Never mind the mod shut it down because he disagreed with me. A little bit of an abuse of power but who cares.

[C-Kwik]

Max flow is higher, yes, but the max efficiency range of the T04E .50 covers a much broader lb/min range over a larger range of PR. Also, the T04B V-trim has a surge line that leans pretty hard to the right.

The T04E .50 is simply a more efficient operator. It's better all the way around. Remember, max flow doesn't mean squat if you're at 50% efficiency. The T04E .50 at max flow is still around 60% efficiency, still higher than the T04B V-trim at the same flow rate.

Actually, max flow means squat if the motor you are using the turbo with can never reach that airflow at that pressure ratio. In fact to simply look at max flow is misleading. A large part of mapping a motor against a compressor map is to determine what range of the turbo's map the motor will be operating in. Anything outside of this range is irrelevant.

But yes, the T04E-50 is probably the best match for a KA at most boost levels(in reviewing even some GT turbos I still haven't found a better compressor than this; turbines might be a different story however). There are turbos out there that will work better for a specific purpose(high boost levels, ultra quick response), but in a general sense, the 50 Trim T04E would be my turbo of choice if I were buying a new turbo and cost wasn't a deciding factor.

[KATwo40]

Never mind the mod shut it down because he disagreed with me. A little bit of an abuse of power but who cares.

I tried to agree with you on that one, but the lock-out got me.

For what it's worth, my drain line goes down under the compressor, then up to the side of the pan and I suffer no backup problems. But, that's another post, I suppose.

Thank you Ckwik for agreeing with me.