KT gurus need your help! Super 70 good for KA24DE?

[leonelrr]

Hey what's up, guys my girl gave me a turbo for christmas lol.. I was surprised, i really did not expect this like at all. I know where she got the idea from, but i think this one is going to be to big for me 4 cyl 2.4 L KA?

This is where i have no clue, i don't know how to read compressor maps? Anyone? lol

It is a Master Power T70 turbo, the Cold side is 70 and the hot side is 68This thing is huge, i did some research and this is what the supra guys use for decent power, small blocks 350 etc..



The first thing that pops to my mind is.. Where would i see boost? At what 4 or maybe 5K RPMS.. lol my KA doesn't like more then 6..

I found some more specs on the master power website with the part number.Here are the specs.

http://www.masterpower.com.br/...&y=17

I also found a compressor map, that it says for the super 70 but i am not 100% if it is for this turbo..

It is on the T70..

http://www.rbracing-rsr.com/turbotech.html#garrett

[480sx]

Its a really large turbo, without knowing for sure its specs im saying its about a 700 hp capable turbo. That means its not working efficiently until your running about 450-500 hp. So unless your going for a really expensive high HP build up, thats not the turbo you want to run. You would get awful turbo lag with that thing.

Id sell it and buy a t3/t4 50 trim .63 ar. Perfect turbo for 450 hp and less. The turbo your girl bought you is actually very marketable and popular you should be able to sell it and with that money buy a t3/t4.

Btw if thats your girl in you sig mad props, hottie. Cool chick too if she bought you a turbo for Christmas.

EDIT - That is not the same chick that was in your sig. lol. Wow those are some fvking hips...
Modified by 480sx at 7:32 PM 3/29/2009

[leonelrr]

Yeah the HP range is 450-700 HP.. That's what i thght it would be to big for my KA.. I don't mind boost lag thg..

I kinda figured out to spool this ***** up i would need some higher flowing head, some costume intake manifold and a good flowing exhaust, manifold, wastegate...

Could it be posible thg? I am willing to work on the block.. It needs a rebuild anyways.. But yeah a smaller one would work better. I was thinking on something like this..

But honestly i don't have 10k lying around..

Could it work thg? Come on give me some hope..

[driftin_sr20det]

Of course it can work. Its really not THAT big of a turbo, look at all these guys running those giant holset's with much bigger exhaust a/r's than .68. I'd run it, in fact I almost did run one. I ended up with a t04 instead though, because I wanted an on-center housing. Rhombus tuning it making a twin gt30 turbo KA-t right now, check it. http://www.rhombus-tuning.com/...t=348

[nelson8708]

You could run it.....My holset hot side is around 1.3 i think...its been a while since i measured it so i cant remember for sure but, its defintally over 1.

[GTR PrYdE]

I don't remember exactly what the KA flows in lbs, but the turbo itself looks good from about 10-30psi, so anything in between will be very efficient.

[WDRacing]

I use a T4 with a .81AR hotside, I have 7-9psi by about 3200 but I don't see full boost till 4500ish. You can add a few hundred rpm to that on both ends. Things to offset lag like advanced timing when off boost help dull the effect of no real boost. Also, watch out for the flash spool effect. You'll literally go from 250 to 400 whp within 1000rpm.

[jbracy7]

its fine you will need lots of tires buy used there cheaper

[leonelrr]

Thanks for the input guys, i wouldn't like to sale it.. But i need to do more research i'll have plenty of time to think about it anyways. I am broke right now, to take on a project like this.. But slowly maybe i can get it going, if i am patient enough..

[TimeAttackTheory]

I wish my girl would buy me a turbo

[Ekinchheng]

Back from the dead! But the ka-t forum is kinda slow which sucks. Hey your going to the S chassis meet?

[C-Kwik]

I'm gonna chime in really late as I missed this the first time around.

First off, this is a really big turbo for the KA. I can't recall the various flowrates for the KA at different RPM's, but my initial though it that much (If not most or all) of the KA's airflow range is in front of the surgeline. This means, if you try and run a turbine that is small enough to allow it to spool at a more reasonable RPM, you'll probably get surge and kill the turbo. Or, you leave the turbine large and end up with a huge amount of lag and a very short powerband (You'll likely hit redline before getting much out of the boost). This is more typical of a dyno queen.

Of course it can work. Its really not THAT big of a turbo, look at all these guys running those giant holset's with much bigger exhaust a/r's than .68.

A/R ratiois only one aspect of a turbine. You also have to consider the turbine size AND trim as well. All three affect flow, efficiency and its ability to drive a compressor. For example, a T4 turbine of any trim with a .68 A/R will behave much differently than a T3 turbine of any trim with the same A/R. That said, no direct comparison can be made between different turbos based solely on the A/R ratios.

[TimeAttackTheory]

When and where is it? Im in the middle of rebuilding my rb20det so i'd have to bring my toyota but hell yea, im down

[leonelrr]

Hey C walk, thanks for chiming in.. Well i traded the turbo for anotehr KA24DE, i figured it would be good to have a spare..

So question, of the day what would be a good trim size to run with the KA24DE, t4 based or t3..

The motor i got came with a T4 Turbo exhaust manifold, its a top mount..Should i keep that a get a T4 ?

[WDRacing]

The best turbo for the KA is the T3/TO4E 50 trim compressor with a .63 AR exhaust housing and a stg 3 exhaust wheel. They usually go from $500 to $700.

WD

[GEO]

True, sell it and get a smaller one that the KA can actually spin efficently.

[240dx]

goo

The best turbo for the KA is the T3/TO4E 50 trim compressor with a .63 AR exhaust housing and a stg 3 exhaust wheel. They usually go from $500 to $700.

WD

good call