KA N/A upgrade parts?

[DrifterBoy240]

i had a few company's that i had in mind of buying some stuff from and now i cant find them anymore or they closed or something along the lines of that but any ways, is there any places out there that sell KA N/A parts out there i know of PDM-racing.com and there is a place out in arizona that i have been looking into about getting a header made. but i just mainly need engine parts anyone know of any out there?

[pregmantis]

ae you talking about s&s headers in arizona? they have a header for your application and they are good headrs.

[DrifterBoy240]

yea it is s&s if i recall correctly. how good are they? what RPM range are they best suited for? i am looking for something in the top end range. once i get the engine built the way i want it to i will be reving it to 8k RPM's!

[952FourtyEssex]

Nice IIRC The Green Vivid Racing KA Revvs to 8k

S&S Got a site?

[pregmantis]

ssheaders.com

[DrifterBoy240]

yea but isnt that built for a turbo build, correct me if i am wrong though. but my biggest trouble is finding valve springs that can with stand up to 8k RPM's. the JWT valve spring are under construction for a newer version and they are not selling the old version anymore.

[pregmantis]

you can probably get your spring specs(height,od width,id width,height at coilbind,etc..) and ask some cam company if they have something that matches your application(with higher rpm capability of course). or get a really light valve.

[pregmantis]

I dont know if ssheaders sells a turbo manifold but I have seen both headers for the sohc and dohc. you can get em coated tooo.

[DrifterBoy240]

i could go with lighter valves but i dont think that they will last as long as usuall, but i would'nt be able top rev to 8k properly becuase arent the stock valves rated to 7k rpm before they get to valve floating? thats why they have the rev limiter, right. well on reason why they have a rev limiter.

[zero_gripS13]

you can u ca18det valve springs in a ka24de...also i think its 300zx springs also... so there alot of valve spring choices out there

[Bigvinnie]

Is this the biggest noob idiot pack or what. Nothing but non sence in this whole thread so let me clear it up before I become a super *** hole (which I am already).First off if you are staying N/A, stick with headers that are on the market DC sports/hotshot/even an OBX. Don't waste your time on silly fabricated headers that used 0 R&D, (waste of your own money).Secondly don't even bother with high reving too 8000RPM, it's not going to happen no matter how good the valve train. Lighter valves????WTF engineering school did you guy's go too, mechanics school for the blind and retarded???? The correct term or terms is titanium and or carbon coated get the terms straight, sure there are other processes but those are just a few.Stock valves are fine as long as they are matched with good valve springs and retainers. Yes the CA18det uses the same valve train components. Brand name Companies that you can go through to get these specific parts are JUN, Crower, Super Tech.As far as the high rev is concerned don't think about it unless you plan to redesign the entire intake system, and chose to significantly redesign the crank shaft so that it is fully counter weighed and knifed. There is too much harmonic disturbance on a half weighted crank of that nature for it's displacement size. you will be lucky to make PEAK POWER passed 6000RPM.

[DrifterBoy240]

yes i planed on doing a lot of changing to the engine and shorten up the runners and balancing a crank and getting it knife edged also.

are you saying that the CA has the same valve train as the KA?

and i will be staying KA N/A for forever and when the motor goes i will be swaping it out for a SR20DE fully built up N/A.

and question, does anyone make smaller connecting rods for a KA so i can get good rod to stroke length for higher RPM's? talking to an old school racing guy who gave me an idea maybe it will work in the KA.

[zero_gripS13]

yes the ca and ka have interhcangable valvetrain..

theres a thread about destroking the ka u should read it will explain some of your questions about destroking the ka.. im pretty sure u cant do it..so search for "destroking the ka" or somehting ..

[pregmantis]

drfterboy, dont worry, you can easily make peak power past 6000rpm. how much higher and sustained is another issue. a simple cam(the right ones)change will change your rpm range(peak torque/power). oh, btw the ssheaders are pretty good headers. I will try to send you a pic of my friends modified sohc header. its ugly(not coated and then painted). they are also 6yrs old.

[Bigvinnie]

drfterboy, dont worry, you can easily make peak power past 6000rpm.

oh yeah show me a KA that makes that power. Really shure it's possible.With a knife edged crank and a T63 turbo....

[DrifterBoy240]

drfterboy, dont worry, you can easily make peak power past 6000rpm. how much higher and sustained is another issue. a simple cam(the right ones)change will change your rpm range(peak torque/power). oh, btw the ssheaders are pretty good headers. I will try to send you a pic of my friends modified sohc header. its ugly(not coated and then painted). they are also 6yrs old.

i have the cams i want well i dont have them yet but i know which ones i want and my engine will be held in the higher RPM's for sustained periods of time. and sounds cool do they pull all the way through out the RPM band?

[240crawler]

drfterboy, dont worry, you can easily make peak power past 6000rpm. how much higher and sustained is another issue. a simple cam(the right ones)change will change your rpm range(peak torque/power). oh, btw the ssheaders are pretty good headers. I will try to send you a pic of my friends modified sohc header. its ugly(not coated and then painted). they are also 6yrs old.

WTF?!

You guys have a truck motor. A long stroke truck motor that is very lucky that it pulls to 7k. Get over it. Be proud that you have enough torque to drive in town. Try to pull 5th gear at 750 rpm in a Honda.

This "I wanna rev the piss out of a KA" is old. Buy a car that you can rev like a incestual hornet (Honda/Toyota).

Enjoy a good puling daily driver 4-cyl with 25mpg and live. Jesus, $3.25 a gallon is killing me. Drive like you have to pay for the gas. Drive like you have to fix your own car.

[DrifterBoy240]

okay i didnt want this thread to become a heated discussion on wether or not i can rev a KA passed a certain RPM range, cause all i asked was there any places that sell any KA N/A upgrade parts. instead of the endless turbo upgrades i can do, and sorry but I WANT TO BE DIFFERANT!!!! and build up a KA N/A sorry but that is just my own opinion!

[SAVAGE!]

thanks for posting thi

okay i didnt want this thread to become a heated discussion on wether or not i can rev a KA passed a certain RPM range, cause all i asked was there any places that sell any KA N/A upgrade parts. instead of the endless turbo upgrades i can do, and sorry but I WANT TO BE DIFFERANT!!!! and build up a KA N/A sorry but that is just my own opinion!

HEY I LIKE YOUR STYLE KID!!! thanks for posting this thread and taking all the flaming that goes with trying to stay N/A. i also want to stay N/A with my SOHC!!!! i know CRAZY!!! well i got some good info out of this post so keep up the good work!

[pregmantis]

crawler, I agree wit you somewhat. we have the wrong engine to rev to 10,000rpm(probably could with the right mods) but asking 7000-7500 is not so unreasonable.

[pregmantis]

crawler, I agree wit you somewhat. we have the wrong engine to rev to 10,000rpm(probably could with the right mods) but asking 7000-7500 is not so unreasonable.... just dont hold it there for more than 15 seconds at a time heh.

[DrifterBoy240]

well i am okay with 7500 RPM's but i would really like to use up my entire RPM range on my tachometer, i know it sounds corny and rediculous but still a guy can dream cant he?

and anyways does anyone know of what parts of the valve train ffrom the CA. sorry but im a little bit lost on this.

and yes we dont have the engine that can be built to rev to 10k but im sure someone at some point in time will make the KA rev to 10K, someone with alot of know how and has money and time to waste to try and build it.

or maybe we can post up stuff about what we know and try to make a theorized KA that can rev to 10K or if some one has ever seen a FJ24 ripped apart in front of them and knows what went inside of it and how it was built becuase the KA is just a modern engine of the FJ24

[DrifterBoy240]

okay let me start

the FJ24 was built as nissans racing engine for the early to late 80's, and the way they made the power form the FJ by having big bore short rod to stroke length, and a long crank to throw the RPM's around and of course it was a race motor but still the KA is a baby brother to this engine all the KA is is a revised street motor, so im wondering if i follow the same idea path of the FJ maybe i will get some decent numbers out of my KA? but still i know its not gonna be spectacular as seeing a turbo motor pull over 500HP easy but still it wil be respectable numbers for a KA N/A.

okay so maybe we can get some ideas going and maybe get the KA to be a recognized motor instead of a hated neglected motor.

there is just one thing i ask dont post up about any turbo stuff please letes make this an intelligent non-biased thread that only has to do with N/A

[Bigvinnie]

okay let me start

the FJ24 was built as nissans racing engine for the early to late 80's, and the way they made the power form the FJ by having big bore short rod to stroke length, and a long crank to throw the RPM's around and of course it was a race motor but still the KA is a baby brother to this engine all the KA is is a revised street motor, so im wondering if i follow the same idea path of the FJ maybe i will get some decent numbers out of my KA? but still i know its not gonna be spectacular as seeing a turbo motor pull over 500HP easy but still it wil be respectable numbers for a KA N/A.

okay so maybe we can get some ideas going and maybe get the KA to be a recognized motor instead of a hated neglected motor.

there is just one thing i ask dont post up about any turbo stuff please letes make this an intelligent non-biased thread that only has to do with N/A

O.k the FJ used a 92mm bore the KA uses an 89mm bore.The FJ uses a FULLY COUNTER WEIGHED crank, the KA uses a HALF WEIGHTED and balanced crank. FJ24 uses a 88mm stroke, the KA uses a 96mm stroke. Most of the KA's inability to high rev is ...well.... Stroke is much larger making much more turbulance, than the slightly smaller FJ crank. The halfweighted KA crank also becomes harmonically disturbed as rpm's increase mostly due to the half weights directed towards the middle of pistons 2 and 3. A fully counter weighed crank allows for equal balance across the entire crank, allowing for less stress and flexing.NISMO has made a fully counter weighed crank for the KA with newely designed pistons, and rods the bottom end cost $8000.Your best bet to achieve some what close to a 7000RPM redline would be to knife edge the crank, and add a crank scraper, and windage tray. Any thing to drop the amount of turbulance and harmonic disturbance will make for a happier, healthier, high reving KA. I would then also focus on higher compression pistons. f you recall the FJ had a compression of 11.1:1.

[pregmantis]

bigvin, whats your opinion of light/underdriven pullies. I wantedto take out the metal ring(heavy) out of my stock crank pully but...people say do it and others say dont.

[DrifterBoy240]

O.k the FJ used a 92mm bore the KA uses an 89mm bore.The FJ uses a FULLY COUNTER WEIGHED crank, the KA uses a HALF WEIGHTED and balanced crank. FJ24 uses a 88mm stroke, the KA uses a 96mm stroke. Most of the KA's inability to high rev is ...well.... Stroke is much larger making much more turbulance, than the slightly smaller FJ crank. The halfweighted KA crank also becomes harmonically disturbed as rpm's increase mostly due to the half weights directed towards the middle of pistons 2 and 3. A fully counter weighed crank allows for equal balance across the entire crank, allowing for less stress and flexing.NISMO has made a fully counter weighed crank for the KA with newely designed pistons, and rods the bottom end cost $8000.Your best bet to achieve some what close to a 7000RPM redline would be to knife edge the crank, and add a crank scraper, and windage tray. Any thing to drop the amount of turbulance and harmonic disturbance will make for a happier, healthier, high reving KA. I would then also focus on higher compression pistons. f you recall the FJ had a compression of 11.1:1.

yea i knew that the FJ had a larger bore and shorter stroke, but what i was told by an old racer that when the FJ24 came out and he knew all the spec's and i told him the specs of my engine and he said it sounds like we have a revised engine from the FJ24 and just more modernized.

so lets see here? if i shorten the stroke on my KA and get high comp. pistons, and bore out the engine and all the other typical internal stuff like cams and valve train. i should have a nice decent motor to work with. granted i may need to put in a lot a bit of time and a lot a bit of some money into it it just might work? hmm.... its nice to dream right. and besides when building an nice motor from scratch there is a lot of trial and error. im so glad i have a spare DOHC KA in my garge to just go and work on. maybe start ripping apart the motor and taking down numbers and and seeing what might work and what wont work.

[S13FX]

Well if your talking about tottal custom engine and destroking the KA here you go.zerothread?id=169943

This has been coverd in depth, almost to the bottom of the ocean weeeee hehe, but it does sound like a cool project idea heh, having a honda KA :-p maybe later on we can come up with some kind of vTec hehe :p

[240crawler]

If you take a KA, change all the internals and create a totally awesome hybrid; it is not a KA anymore-it is a hybrid. I would love to have a 10,000 RPM 250whp hybrid in a play car. However, I do not have $10,000 to make this dream a reality.

[Bigvinnie]

so lets see here? if i shorten the stroke on my KA and get high comp. pistons, and bore out the engine and all the other typical internal stuff like cams and valve train. i should have a nice decent motor to work with. granted i may need to put in a lot a bit of time and a lot a bit of some money into it it just might work? hmm.... its nice to dream right. and besides when building an nice motor from scratch there is a lot of trial and error. im so glad i have a spare DOHC KA in my garge to just go and work on. maybe start ripping apart the motor and taking down numbers and and seeing what might work and what wont work.

Obviously someone isn't paying attention to what I said earlier. Shortened stroke really isn't the problem, needing to get a FULLY COUNTER WEIGHED CRANK is. The KA crank is only half weighted, if it was a fully counter weighed crank it would accept high rev very well.

[DrifterBoy240]

Obviously someone isn't paying attention to what I said earlier. Shortened stroke really isn't the problem, needing to get a FULLY COUNTER WEIGHED CRANK is. The KA crank is only half weighted, if it was a fully counter weighed crank it would accept high rev very well.

i take it just getting the crank balanced is out of the question, huh? does NISMO make one? or is that a custom one off piece?