KA Bolt-ons and N/A Tuning

[1viadrft]

^ I dunno I was just ranting ^

[rollhard]

If you need nitrous to spool a big turbo, you no longer have a street car...you no longer have a circuit car....you no longer have a drift car....you only have a drag strip car....

[DC1984]

^sounds like the mans got a point^

[Hit_N_Run-player]

my post isnt ignorant, its just the way i look at it. Nitrous is just dumb in my opinion. How long can you safely spray a stock ka? How long can you safely spray any car? How many times do you have to fill the bottle? I dont like it because its stupid for any use, i mean if you are just driving along and some dick pulls up can you drop gear and mash on the nitrous button to just blow away? no, but a turbo is always going to be there for needed power, or even a built N/A engine. But, a progressive nitrous controller used to spool a large turbo is a good mehod, it just seems like alot of an engine (nitrous and FI)

[Hit_N_Run-player]

Nitrous for DD/streetcar---dumb and useless

Nitrous for drag/strip car-----has its ups if you can do it safely

But i dont think he is going to be building a stip car so i drop the nitrous idea

[liquidPunk]

ummm... nobody said anything about the eaisiest ten dollar mod... Get a z32 fuel filter and slap it on... not really for hp but man it makes the egins run super smooth and you can get to the power band much faster... seriously... the best ten bucks ever spent and you notice a huge difference!

[1viadrft]

Originally Posted by Hit_N_Run-player

Nitrous for DD/streetcar---dumb and useless

Nitrous for drag/strip car-----has its ups if you can do it safely

But i dont think he is going to be building a stip car so i drop the nitrous idea

I should have clarified... but YES I totally agree with this statement!

I asked the orginal poster for what purpose he was using the car/his goals... but I never got an answer... but...


I mean yeah... it's very stupid if you are spraying on every Honda you see on the road. Nitrous in the hands of any idiot can be dangerous to an engine and to oneself (just like a turbo). Really if you think about it... nitrous (in the hands of an intelligent/mature person) is really practical if your car is used for DD and the Strip/Track like my car. While DD'ing your car has the practicality of a street car... when you need the power for drag racing all it takes is a twist of a knob and a flip of a switch. Have you ever had the pleasure of turning off your turbo? How pratical is a turbo? I think the answer is: That is the reason why they make NA cars!

Nitrous is one of the OG mods of our times and it has come along way IMO. I guess if you look down on nitrous that is just your preference I guess and I respect that. Myself? Well I love turbo's too... don't get me wrong. I hope to own a boosted Z someday along with my NA/Nitrous track Z. But I'll stick by nitrous anyday as a nice power-adder on an NA car.

[Database_NINJA]

First off, don't listen to anyone that says the KA is a truck motor and horrible for tuning and using for racing. That is just a bunch of crap people that only have eyes for the candy red of an SR vavle cover with a snail on the side.

Well, there is a little known easy and very cheap mod to pop a little more kick into a DOHC KA motor. Try to find a 1991~1993 240sx in a jy and buy an exhaust cam from it. Put it in your motor as the intake cam and skip the chain 3 links (or 4 teeth) counter clockwise (see picture). You are retarding the cam 16 degrees (I think, I don't have my S13 notes, havn't owned a KA S13 for a LONG time), this puts the cam where it needs to be for use as an intake cam. If you don't own a 1991~1993 buy 2 exhaust cams and use one for exhaust as well, that will give you 248/248 cams and they only cost a couple of bucks at the jy.

So, 30 or so bucks for 2 exhaust cams, an hour or so of easy work. Then you have a cool lumpy idle and a little more power, hahaha. Sorry, I don't remember where I got the picture or I'd give credit... not my picture.

[1viadrft]

^ Haven't heard of that ^

But I would like to know what the HP outcome would be if any....

And to add to the KA tuning/modding... NISSAN Motorsports catalog has many items to mod a KA such as Hi-Compression pistons and such. If people would take the time the KA could be a formidable engine for the track and such.

[Database_NINJA]

Haha, never really dyno ghetto tuned cars, costs too much. It is noticable though.

Another little known fact is that the KA24E in the 95ish year pick-ups runs off of a MAP set up. Running that set up on a 240 with a KA24E, an AFC or some other sort of piggy back one could rig up some motorcycle ITB's, throw in a cam and you're looking at a fun little motor.

In SCCA GT racing there were a few 240sxes that ran the SOHC motor and did pretty well.

[Hit_N_Run-player]

the S13 cam trick works good and is cheap. As for turning off a turbo you can either try and stay out of boost or just keep the boost low for DD and have a second setting used for racing..

[slideways...]

actually in 1991 and 1992 the DOHC model 240sx that just came out then won the IMSA GTU class outright. the best the SOHC did was it got 2nd place once, IIRC.

[Database_NINJA]

I was under the impression that one of the newer (built to look like an S14) cars that got third or something was running the SOHC motor... Third for an SOHC motor that is that old is pretty damn good considering what it was up against.

[liquidPunk]

im pretty sure that all model years 91 and on were running the ka24de not the ka24e

[Firewind]

Wow, now this is what I'm talking about, 3 pages, plus more mods are coming out of the wood work now.

I really like the exhaust cam idea, but explane to me why the exhaust cam is better for the 240SX on the intake. What is the psyical difference in the cam.

Also if you could explane to me what a motorcycle ITB is.

Thanks
- Adam