removing EGR....

[DrifterBoy240]

okay i am going to doing a small rebuild to my S13 KA N/A and was going to remove the EGR system but i dont know who makes any block off plates or the parts that would screw into where the pipe would go.

and is there anything else that i could remove to make it a little more fun drive.

planning on getting a ported/polished head w/ BC street cams, removing EGR, remove the secondary butterfly valves, and some small suspension parts to grip or drift.

[DjPantsSpecR]

well removing the EGR will gain you zero horsepower unless its malfunctioning. egr is closed during WOT, so removing it wont make it any more fun to drive.

you can make block off plates at home by yourself. i literally made mine out of sheet metal. and i pluged the pipe on the intake manifold end with a penny. you can plug the other side with a nickle, but i had mine welded shut, which i recommend.

and i know Ebay almost always has egr block off plates. but unless you're turbo, theres really no reason to block off the egr. i bought my header with it welded shut.

you can remove a lot of stuff. PAIR, IACV, EGR, SCV, Charcoal canister, coolant lines to the TB and intake manifold. this adds probably around 6 or 7 horsepower depending. and almsot all the power is from removing the swirl control valve, maybe a pony or tw2wo from removing coolant lines to the tb and intake manifold.

i run my KA on the bare minimum, but only because i am experimenting with intake manifolds. The only other plus side to removing any component that is not necessarily vital to streetability, is because it takes much much less time to yank the motor out.

[wankelTII]

You might want to keep your IACV and secondary butterflies. If you are going to go that far with everything definately loose the A/C and Powersteering. If you remove both of those then you can decide whether you need your IACV or not.

For the powersteering, if you dont want it, then do this:remove rackdisassemblecut/remove inner sealreassembleplum at least one line to a fill canseal up any other holesrefill rack with pwr steering fluid!

Anyone got a pic of the secondary butterfly valves? I dont think i have ever noticed them, dont know why. Maybe i am not thinking about the same thing you guys are.

[DjPantsSpecR]

yeah wankel there is a thread on the 240sx page right now called KA24DE OBDII intake on OBDI car? What the heck is this valve thing? with a great picture.

i agree with removing the AC too if youre really serious, i wouldnt ever remove a functioning IACV.

removing the AC is great because you dont have to make a new tensioner. its good for removing slight parasitic losses, and it drops a lot of weight off the front end.

removing the power steering kinda sucks because you have to either make a tensioner, or gut the ps pump and use that as a tensioner. neither of these things would be hard to do, tis jsut a bit more involved.

[DrifterBoy240]

is there any write up on removing PAIR, and SCV, charcoal canister, coolent lines and swirl valve???

and i dont think i will remove my power steering<-----yes i am lazy. A/C maybe but where i am moving to this summer i dont know if i want to remove the A/C just yet. so i will wait for that.

and i can get a pic of the secondary butterfly valves for ya this weekend i have a spare inatake manifold at my garage.

and i though a IACV was to control the idle on our cars so i thought we woudl need that??? not unless i am thinking of something else????

[DjPantsSpecR]

im supposed to be doing an entire intake manifold write-up.... about removing all this crap. i havent started yet.... d!ck asked me to months ago....

i know the info is out there, but nothing is concentrated.

you could cut out the bottom of your air box, but other than that i think we've listed jsut about all the free horsepower i can think of right now...

yeah IACV controls the idle, cold idles and hot idles. However, there are stops for both fully closed and wide open on the throttle body, and you can adjust one of them to keep the car at whatever rpm you want at idle.

its crude, but it works. you have to keep rpms up by foot for cold starts. however, if its primarily a summer car, you can get away with jsut setting the idle at 900rpms constantly. again crude, but it works.

once again, still no benefit to removing it unless you dont want to plumb it in the custom intake manifold you might buy, or its malfunctioning to a degree where you cant clean it for repair.

refer to the link i posted to the first page where we are having a discussion of the swirl control valve. there are good pictures, and it roughly states how to take it apart and how to fill the holes.

[DrifterBoy240]

well i right now live in WI and drive my car daily rain, sun, SNOW, and ohh yea when its way to d*** cold out side to get to work but i might be moving somewhere warmer (cant wait if i do) so for now i will keep my IACV.

i will from your advice leave it until i get a aftermarket intake manifold but unil that day i will go a head and leave it on there and i have an aftermarket intake on my car and i took that bottom part of the air box off too.

i will have to get my spare intake manifold and start tinkering with that by plugging up all the holes and getting that ready to go on.

and when plugging the coolent hole from the head to the intake TB what can i plug those off with.