Turbo Kit Teaser Pics

[cdydjded]

FU: Looking to make +/- 150HP 5-7 lbs

ECO: Under $3000

RUS: Log style, What I/C do you want to use & where do you want to place it?

[spkrman]

Originally Posted by ChinoCharles

Byebye warranty, hello keeping up with traffic! Who is tuning it?

And Chris, don't lecture me on that damn law... they'd blame everything short of a seat stain on that turbo!

the pee stain after you 1st floor it and can now *pass* most minivans is 100% turbo related.

[dngz]

hope you are changing your internals too

[ChinoCharles]

Originally Posted by spkrman

the pee stain after you 1st floor it and can now *pass* most minivans is 100% turbo related.

[Doc Zaius]

After spending the day very carefullly perusing some "What kind of turbo should I get?" sites (Garrett *great site* & MazdaSpeed), I built this big Excel spreadsheet so I can see how the different values for airflow, manifold pressure, pressure ratio, target horsepower, etc. interact. Then I studied a whole bunch of compression maps, and I figured that if aiming to produce less than 180HP, then a GT22 or even a GT20 would suffice.

I mean, assuming Air/Fuel = 12, and BSFC (fuel consumption) = 0.55, then for 180HP, you'd need 19.8 lb/min of (actual) airflow. So, assuming a decent intercooler and intake/exhaust plumbing, the pressure ratio @ 6,500 RPM should be somewhere around 2.2-2.3. These numbers are smack dab in the middle of the efficiency islands for the GT2252, but even still on the maps for a couple GT20's. It seems that a lot of those bigger 'chargers are for when you have much more airflow.

But seriously, I'm a noob at this. I only know what I've taught myself. But wouldn't you want to pick the smallest turbo possible that still has all your target numbers inside its compression map, to the left of the choke line?

Thanks in advance for any thoughts or corrections on this!

[cdydjded]

DNGZ: Why do I need to change the internals now with a low boost kit? You can run a Greddy S/C, Greddy tubocharger & Blitz S/C with stock internals.

I will go to JE pistons & Carrillo rods when I find the limits of the stock 1NZFE.

DOC: I have the GT15 in my garage. I ordered it with the intention of running the smallest turbo but when I received it I came across some unforseen problems.
1) Exhaust housing in tiny. I felt the exhaust could not breath properly through it
2) The whole turbo itself is to small, what I mean is phisically. I am planning on selling this kit & with the GT15 it made the kit unapealing. I will post a pic of it asap

[spkrman]

Originally Posted by cdydjded

DNGZ: Why do I need to change the internals now with a low boost kit? You can run a Greddy S/C, Greddy tubocharger & Blitz S/C with stock internals.

I will go to JE pistons & Carrillo rods when I find the limits of the stock 1NZFE.

DOC: I have the GT15 in my garage. I ordered it with the intention of running the smallest turbo but when I received it I came across some unforseen problems.
1) Exhaust housing in tiny. I felt the exhaust could not breath properly through it
2) The whole turbo itself is to small, what I mean is phisically. I am planning on selling this kit & with the GT15 it made the kit unapealing. I will post a pic of it asap

Im sure you'd have no problem selling as long as you can show proven results

[Nutzoids]

Originally Posted by spkrman

Im sure you'd have no problem selling as long as you can show proven results

... And be able to keep the cost low!

After all this car is all for Efficiency... Why have Turbo you can't use?
4-6LBS of boost should be more then enough...

In most cases that equals out to about 150 - 160HP... In a car our size...

DAMN, That Bitch Will Be Quick!

[Doc Zaius]

Originally Posted by cdydjded

DOC: I have the GT15 in my garage. I ordered it with the intention of running the smallest turbo but when I received it I came across some unforseen problems.
1) Exhaust housing in tiny. I felt the exhaust could not breath properly through it
2) The whole turbo itself is to small, what I mean is phisically. I am planning on selling this kit & with the GT15 it made the kit unapealing. I will post a pic of it asap

Interesting... from what I've read, they tend to size the exhaust outlet on the small side to provide a higher exhaust velocity. But still, too small is too small!

Would be interested in seeing a pic, with something to reference scale. Must be a *tiny* turbo!

Also, I think I remember reading somewhere that the reason none of the forced-induction offerings available for the 1NZFE get above 150HP is because of the offset crank, and the stock internals just can't take anything above that. Any comments or thoughts on this?

[dngz]

just want to keep your car as reliable as can be!