how much power can i make out a a jdm t2 street port with stock turbo and e management ?

will it be goood for a 1st gen

Just off the top of my head, I'd say in the ballpark of 250 HP, more if you do everything right.

that yellow car looks hot



exzcept for that thing on the hood

i'm gonna say a stock port will do 240rwhp@12psi with the stock turbo, and a street port will do 238.3hp@12psi with a stock turbo.



turbo is just too small!

y is that ?

why would street port do less hp? wouldnt it be the other way around.

stock turbo is too small to make more than 240ish hp

No it's not https://www.nopistons.com/forums/pub...DIR#>/wink.png this summer I'm planning on 280 at the wheel with that little bastard. Stock turbo and ecu. I'll need a FMIC but I think it's doable.



The reason the SP will make less because the turbo can't flow enough for the street port.

not that i would really know but i think the record for a stock turbo is around 265rwhp

Ya but why stress it, ur gonna cook the **** out of the turbo with those numbers.

Oh I have plans for it if I cook the turbo. https://www.nopistons.com/forums/pub...DIR#>/wink.png It involves 2 turbos https://www.nopistons.com/forums/pub...IR#>/smile.png

Anyone going to the trouble of running an aftermarket ECU should upgrade the stock turbo, IMO. You can keep the same setup and avoid the expense of a new turbo manifold and exhaust by going with a compressor side upgrade (like I did). But it's still going to be a limiting factor.

thats a good plan!

Don't patronize me https://www.nopistons.com/forums/pub...1047683473.gif

yea here's hoping you dont suffer a catastrophic failure. why chance pushing that turbo to its breaking limit? youre trying to push 330+hp at the engine (to get 280 at the wheels) on a turbo that is a tad bigger then a hair dryer? What if it overheats to a snapping point, throws its internals into your motor? now you're out a motor and a turbo.



Also the heat the turbo will be generating at a boost level high enough to make that power will be completely counterproductive, unless of course you have an *awesome* IC setup, not some cheaply fabbed thingo from ebay (note: yes i do know some ebay pieces are actually very good quality)...that and the fact that the stock turbo's efficiency range probably ends around "15ish"psi..i'd imagine.



it's such an uncalled for risk, but hey to each his own. i look forward to seeing your results, and more power to ya if you do accomplish it, it's a nice goal to aim for. (seriously, not being sarcastic, i would like to see how hard and for how long someone can push that tiny turbo.)



kevin.

shut up kevin!!! Let him blow up his turbo!!!

Yeah man I want to try the 20b twins on the 13b, crap if I blow my motor and turbo in the process I guess it has to happen. I definately think that the turbo can produce 270 at the wheels for sure, I was at 10-11 psi on the dyno and made 240, if I bump it up to 15-16psi, 270ish very doable, but I will need the FMIC.

duh

yes but youre failing to factor something in here.



When you switch to the FMIC your IC pipes are now longer and larger in diameter. SO now to produce the same volume of air your turbo will be worked double-time plus youre going to try to add another 4-5 psi into the equation? (and remember, what makes power is the volume, not the pressure)



I'm telling you it will be counterproductive and youll lose horsepower. The heat from a completely overworked turbo makes it useless....and somewhat dangerous.



again, more power to ya if you manage it tho.



kevin.

No I took that into account, I'm thinking vmount, ot just vmount the IC just for the dyno run, if I can get access to a welder anything is possible. And a hood isn't a necessity.

thats impossible. there is no reason opening up the ports will lower the hp. you just wont be using the ports to their full potential. power = air + fuel we all know that. the ammount of air could only go up thus making more power. the car might run lean if some thing is not used to tune it but a bigger port will not make less power. the boost will probably spike to around 12 and then start dropping off as you get to 7-8k cause the turbo wont be able to keep up with the ammount of air the engine wants.

No if the turbo can't move enough air to fill those ports it will lose hp.

well not filling the larger ports is still more air then can fit though the smaller ports. in fact 12 psi on both set ups would mean much more air because to be able to hold 12 psi in the intake track with the larger exits to the rotors take alot more air. with a street port on a stock turbo you should see less pressure with as much or more hp. you will get more hp if the limiting factor in the stock set up is the turbo if it is the port size in the stock engine you will gain hp. and im pretty sure the turbo is not maxing out on the stock setup but the ports are pretty close.

corkey bell did some research on the t2 in 87, for their cartech kits. the turbo is the limiting factor. at the engine peak flow rate its @45% efficency. or to put it another way, after instrumenting the whole car, they went from 180rwhp to 240rwhp by changing the compressor....

so yea if the turbo is maxing out and you make the ports bigger you will see a MINIMAL gain in hp if any

it is about volume and not psi I am doing the same thing right now with a street port, stand a lone and stock turbo. I ran out of money and want todrive the car so i decided to find out what a stock turbo would do and friends who have done the same say the stock turbo will only oush a steady 12 psi and may spike to 16psi but that is running it at its burn up point so the best thing to do is run 10psi get your 250 hp and go for the better numbers with a better turbo.

thats where we are with my roomates car, it wont boost higher than 12psi