Best turbine for the KA

Information on the naturally-aspirated KA24E and KA24DE engines.
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hannibal
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DaveEEE said the T04B comes on about 4000rpm. When does a T3/T04E 50 trim hit full boost??And if a ball bearing turbo only spools up 500rpm earlier, is it really worth it?? I guess on a bigger turbo it might be. But on a T3/T4 or a T4, Im not sure.I think KApwr summed it up pretty well. The hybrid seems like a good all-round turbo. But they seem to charge so much more for it. If the lag on the straight T4 isnt much more than the hybrid, I might consider the bigger turbine.

Jay


:: orion ::
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IWannaS15 wrote:When does a T3/T04E 50 trim hit full boost??

...The hybrid seems like a good all-round turbo. But they seem to charge so much more for it.


I have the same T3/T4 except a 57-trim, and get full boost by 3100 in 2-3rd, and maybe 2900 in 4th...with a RevHard Manifold.

And as for the price of the hybrid - $550 at http://www.cheapturbo.com - Can't beat it, not expensive at all in the world of turbocharging.

Later - Brian

encasemyheart
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:: orion :: wrote:And as for the price of the hybrid - $550 at http://www.cheapturbo.com - Can't beat it, not expensive at all in the world of turbocharging.


Yeah this is where my turbo is coming from, a 360 degree thrust bearing upgrade from the standard 270 is only $75, so I say why not. Why wouldn't I want smaller lag while I'm putting 350whp to the ground and eating up anything and everything on the street. (unless I run across Aries' 240SS here in Houston :) )
_dk wrote:encasemyheart: you missed one, it was also used on the celica all-trac/gt4 :D


Thanks. :)

kpark129
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.[QUOTE]Originally posted by :: orion :: "]I have the same T3/T4 except a 57-trim, and get full boost by 3100 in 2-3rd, and maybe 2900 in 4th...with a RevHard Manifold.

I know where to buy turbo's but where can I buy turbo manifolds? any sites that sell affordable manifolds? thanks for the cheap turbo site :D

Red Lightning
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How about a Cummins Diesel Turbo? :oface Some guy claims he put one on a Eagle Talon. How big is that turbo anyways? Would it work on the KA?

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WDRacing
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Diesels usually run huge turbo's since a diesel has like 20/1 compression ratio. They don't need to worry about spool. I wouldn't recommend using a diesel turbo.

WD

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I know it's probably wayyyyyyyyyyyyyyyyyyyy bigger than the ka24 needs. Just wasnt sure.

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TopStreet240
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why do you guys all shoot so low on your turbo set ups. Dont cheap out and go big, im going to be running 30psi (35max) with a 650-675 hp set up. forget this 300rwhp stuff and go big or go home. yeah it takes a little more, but come on. Oh also PTE has some great turbos and Im going to be setting up a group buy on the turbo that I have and some other ones. contact me if you would like to know more.Jake

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r u crazy? most of the people on here dont need that much hp and most of our 240s are daily drivers. a set up like that has got to be about 5 mpg. besides 300rwhp is plenty to have fun with and u can alway upgrade to get more hp. and it doesnt take much more? u talking about a much larger and more expensive turbo and a full engine rebuild thats alotta money. IMO

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TopStreet240 wrote:why do you guys all shoot so low on your turbo set ups. Dont cheap out and go big, im going to be running 30psi (35max) with a 650-675 hp set up. forget this 300rwhp stuff and go big or go home. yeah it takes a little more, but come on. Oh also PTE has some great turbos and Im going to be setting up a group buy on the turbo that I have and some other ones. contact me if you would like to know more.Jake


I'll go easy cause your new....To have a KA make anywhere near 650hp your going to need ALOT more then a BIG turbo. Your talking about a fully built race motor. Not somthing you'll be using for a daily driver. With 650 hp you'll have so many traction issues it won't be funny. I've done a ton of research on this topic, cause I WILL have the fastest KA powered 240 in the world.

There are also quite a few smaller turbo's that will push 30 psi. So you don't have to go BIG to get high boost. One of the things you get with a BIG turbo is alot of lag. So your powerband will be from 4800 or so to 7000. Your not going to win any races that way. To raise the RPM limit on a high HP KA your going to need alot of titanium parts...rods are going for 500 bucks each. Not to mention the valve train issues.

So going with a BIG turbo isn't very smart for a street car. But everyone has there own opinions, you can have yours...But I'll be waiting for you at the finish line.

WD

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I'll refrain from commenting on the 'go big or go home' post...

But here's the current KA leader:

Check out the thread over at FreshAlloy, he put down 504rwhp with a T66 and mild tuning...and stock cams!!!

Later - Brian

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f1seb
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Well WD I would like to keep my car a daily driver. But I would also like to have around 300-350whp. I think thats reasonable. I am prepared to buid up the motor to get there but I would like to be able to buy a bolt on kit that will give a noticable power gain over stock. But also would love to have the "room for more" in case I get bored. The car will be used for Auto-X and i would like to take it road course racing as well.

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Auto-x or road course - You need to decide which is more important to you before making your turbo selection...

My car is set up pretty well for road course events, but I auto-x it 3 times as much due to event availability...and it's a handful on an auto-x course with a T3/T04E 57 trim.

When the power comes on, you get a jolt of 100ft/lb of extra torque in the span of 500rpm, and that's not easy to control sometimes. This is a stock block (custom) KA-T at 8psi...

On the road coures, though, the power is perfect...lot's of top end, great pull, plenty of power.

And on the street, it's a blast.

But if I were to build an SCCA Solo II S14, for Street Mod...it would have a Z31 T3 or a Super-60 or something.

A friend that auto-x's A LOT (he's gone to Nationals once, he's a Novice instructor, etc...good driver) drove my car last weekend and ran a second slower than me - He usually can get in other peoples cars and shave off a second, but mine he described exactly as I did above - A "handful".

Later - Brian

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Would a T3 be in its efficiency range with the ka24de though. I would like to go with a setup with the lowest spool possible. I would like to make a maximum of 300hp at the wheels in the end. Would a T3 cover this? Most T3's are setup for high boost smaller displacement engines but is there a setup for lower boost higher displacement engines?

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Z31 T3 is good 'til 15psi on the 3.0 liter 300ZX - So it's FINE on a higher compression 2.4 liter...

Of coure, you'll make more power with a hybrid with T4 compressor, but...

Anyway, the T3 at 15psi should get you to 300rwhp - But for that goal, I'd do a T3/T4, 50-trim, .63 A/R hot side...

Why 300hp? Do 250 and less weight...

Later

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hello

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hi

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TopStreet240
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WDRacing wrote:I'll go easy cause your new....To have a KA make anywhere near 650hp your going to need ALOT more then a BIG turbo. Your talking about a fully built race motor. Not somthing you'll be using for a daily driver. With 650 hp you'll have so many traction issues it won't be funny. I've done a ton of research on this topic, cause I WILL have the fastest KA powered 240 in the world.

There are also quite a few smaller turbo's that will push 30 psi. So you don't have to go BIG to get high boost. One of the things you get with a BIG turbo is alot of lag. So your powerband will be from 4800 or so to 7000. Your not going to win any races that way. To raise the RPM limit on a high HP KA your going to need alot of titanium parts...rods are going for 500 bucks each. Not to mention the valve train issues.

So going with a BIG turbo isn't very smart for a street car. But everyone has there own opinions, you can have yours...But I'll be waiting for you at the finish line.

WD


Well WD, I will take you challenge of the fastest ka, because I am building my motor this winter, and it will be a daily driver. So I think the race is on, im going to dyno my car sometime at the end of the month so I can get an idea of where im at. And i know im new here but I know that the high horse needs a lot more than a big turbo. and please dont ever go easy on me, if you always go easy people will never learnJake

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TopStreet240
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oh and I will have very little lag, my car will be spoolin at around 3k rpm and will keep making power until 8k.

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TopStreet240
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:: orion :: wrote:I'll refrain from commenting on the 'go big or go home' post...

But here's the current KA leader:

Check out the thread over at FreshAlloy, he put down 504rwhp with a T66 and mild tuning...and stock cams!!!

Later - Brian


Im sorry but what are you saying. How about this, instead of showing me what some other guy is running, just show me what you can do, because im not that impressed with that dyno run. I think me and WD will both be going way over that soon enoughJake

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TopStreet240 wrote:Well WD, I will take you challenge of the fastest ka, because I am building my motor this winter, and it will be a daily driver. So I think the race is on, im going to dyno my car sometime at the end of the month so I can get an idea of where im at. And i know im new here but I know that the high horse needs a lot more than a big turbo. and please dont ever go easy on me, if you always go easy people will never learnJake


Game On Jake...welcome to the boards. I like a little competition, makes me feel younger...lol. But I WILL be waiting for you at the finish line...heh.

WD

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TopStreet240
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when you say waiting, you mean waiting to like shake my hand and ask me what I did right?haha just playing manJake

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WDRacing
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Actually I meant I'll already have my helmet off and my first beer in hand...lol.

WD

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TopStreet240
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because i handed it to you as you pulled up... loljake

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You have to be old enough to buy beer first....

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TopStreet240
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oh man well, A SODA then!

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by fastest.... are we talking in a straight line? or on a race course?

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TopStreet240 wrote:...because im not that impressed with that dyno run.


And you shouldn't be - Untuned, old JWT program, test run...BUT still the highest HP KA around currently. ;)

But until you show up with more, he's waiting for both of you at the finish line...

And ADAMHU - I'm with you...I have a different definition of fast!!!

Later - Brian

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And Mike Lee, the owner of that car, used to be on the main list years ago. If I know him, he is probably not near done. The topic on the FA thread indicates that is a shakedown run.

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I'm talking about the fastest car in the 1320 Adam...I can't use my drag car as an autocross/roadcourse car at the same time. But my DD will be pretty quick around the road course I bet. But thats not really my thing. I'll just get out there to mess around and have some fun. The 1/4 is all bussiness to me...

I have no doubt that Mike Lee is capable of generating more power. I've said several time the KA will generate 400 on stock internals, so 500 isn't very difficult with forgies. I'm sure he'll see 600. Hell, he is using stock cams!!!

I am glad that there will be some competition. It wouldn't be any fun otherwise.

WD


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