exhaust for sr20det

[fulltimeclubber]

wonderin if I should purchase an exhaust now for my car (1990 240) if I purchase a one piece exhaust system will it fit onto a sr20det in the future? If I'm not mistaken the exhaust hooks up to your catalytic converter is it in the same place on a ka24se?? (think thats my engine code no dohc) and a sr20det? or should I hold off on getting an exhuast system for when I get the sr20?? thanks again.

[I H8 UR DSM]

ka24e (sohc 240 motor)

if you get a catback exhaust, it is the same application for the car with an SR20det...the downpipe comes in a similar position, and the cat will bot up to the exhaust...so yes, if you get a catback now, it will work when you get your SR.

and no, noone wants to give you an SR20det.

[SpeedRacer1]

Just make sure you get 3 in pipes, you'll lose a little power now but make it up later.

[ESCALVANTE]

Get the 3" piping if you plan on going with an SR swap in the future. I hear an exhaust with that piping will be loud with you stock engine but will quiet down a lot when you install the SR engine.

Has anyone documented the lose of power using 3" piping on a US 2.4L 240sx?

I was just wondering because a 2.4L 4-cylinder is pretty big not to gain something from 3" piping.

Thanks in advance for any info. regarding this issue.

[I H8 UR DSM]

youll lose some low end tourqe and gain some high end hp on the 2.4l KA....

i dont think the loses are noticable in the 'real world' but im sure there is some low end tourqe loss on the dyno charts.

[ESCALVANTE]

fulltimeclubber: You see, according to H8 UR DSM, you will gain some HP with the added security that you have the right exhuast for your future swap.

H8: Thanks again.

I still would like to see some dyno sheets.

[I H8 UR DSM]

why waste your money dynoing a 150hp 240 , hehehe, just playin

i have seen them somewhere, but i dont have the motivation to search...

with I/H/and a 3" exhaust of course you will gain HP, its just not the same level you will gain when you have a 3" on a turbo car, ya know......i had my N1 on my KA before the swap, and i didnt feel ANY power losses, only gains, and better throttle response at high rpm, but it was pretty loud exhaust...louder than it is on my SR with no CAT... : )

[ESCALVANTE]

Yeah, I've heard the KA with an N1 and it was loud as heck! I've also heard the N1 on an SR equiped S13 and it sounded like a blow dryer on steriods. It's funny how much the turbo muffles the sound.

H8: If you don't mind me asking, what's your set-up (suspension, engine, interior, and exterior) and how much have you spent?

Thanks in advance.