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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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#11 |
Post Whore!
![]() Join Date: Jul 2005
Location: South Florida
Age: 42
Posts: 4,829
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never said it was impossible just to be careful with numbers. I thought the thread op said your graph was at 17psi thats where I got it from.
For an sr20 engine to make an extra 50-70 ft*lbs of torque (360 instead of 300 at 19psi) there are many things you could or would have to do. Working backwards that is like a 4L engine making 5.3L engine torque (360ft*lbs). It doesn't add up. Something is wrong, where did the extra 1.3L come from? You can put aftermarket heads, cam, intake, exhaust, all the mods you want and it will never make more torque than the same 100% peak because you can't go over 100%. Maybe you bored and stroked the engine to 2.4L and just forgot. Or had a 50 shot of nitrous on it. Honda makes the most efficient engines on the planet, lets see what their 2L does at 19psi... With E85 https://www.maperformance.com/blogs/...2k-on-our-dyno ![]() wow look at the Honda go This is 1.8L AND E85 , you can clearly see the resemblance to all the others (torque) https://honda-tech.com/forums/forced...-tune-2820252/ ![]() Its missing .2L so add 10% torque to what you see to compare with 2L I'll keep looking though heres 2.4L KA24DET 13psi of boost http://www.ka-t.org/forums/viewtopic.php?t=45339 ![]() Intersting. Creeping on 320ft*lbs with .4 extra liters but 6psi less boost. Lets work backwards to see if it makes sense with what we already know Go from 2.4L to 2L so subtract 20% torque: (320 * .8) = 256ft*lbs, now lets add the boost: for every 1psi we add roughly 10ft*lbs so lets count it out, 13 -> 19psi = 6 psi so +60ft*lbs to 256ft*lbs = 310ft*lbs of torque from 19psi at 2L !! Imagine that Isn't it funny how no matter what engine we look at from what car, around the world Last edited by Kingtal0n; 06-11-2020 at 10:23 PM.. |
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