ITB KA - inspiration
Where are you reading from...TR? It's plain to see that you dont care what others have to say about the subject because you think you know it all. I bet you didn't even look in to what I said did you? I'll never understand people on tr because of things like this. Nobody ever wants to read and everyone thinks that there is no world outside of tampa.
For the other that want to learn something look into this more. You will find plenty of good info on the subject as it's one of the most common topics on any nissan forum. Of course it's not going to be cheap to make the numbers but it can be done.
For the other that want to learn something look into this more. You will find plenty of good info on the subject as it's one of the most common topics on any nissan forum. Of course it's not going to be cheap to make the numbers but it can be done.
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Chris
Chris
Last edited by Chris111; May 23, 2007 at 08:42 PM.
thats right because in the stickies we have on TR we dont have a shit ton of Nico and Freshalloy articles...
the single cam carbed race engine in that s14 is heavily underpowered for the amount of money it cost to build it...and is only about 230whp? (i think)
the single cam carbed race engine in that s14 is heavily underpowered for the amount of money it cost to build it...and is only about 230whp? (i think)
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Wanna see picsfrom carevents in Japan?
http://www.hashiriya.net
R.I.P - Tim Aldrich (Osama Tim Laden)
http://www.hashiriya.net
R.I.P - Tim Aldrich (Osama Tim Laden)
Last edited by shinmei2006; May 24, 2007 at 03:50 AM.
not counting the few race motors that are ridiculously unstreetable, require race gas, and are in race prepped chassises that weigh next to nothing, i have yet to see an over 190whp n/a ka. period.
there have been plenty of guys with built n/a KA's that can't muster 175, with their 11:1 compression and etc etc. the PDM JUST did like 182 n/a with a rom tune and i/h/e, and that was only a few months ago.
back in the day - throw every part at n/a KA, 165whp the norm.
middle ground - ROM tuning, ITBs, almost stock KA's doing 165-175whp.
now - most people realize n/a KA is weaksauce, but fun to drive. few have managed to get proper setups together, and even fewer get actual numbers.
there have been plenty of guys with built n/a KA's that can't muster 175, with their 11:1 compression and etc etc. the PDM JUST did like 182 n/a with a rom tune and i/h/e, and that was only a few months ago.
back in the day - throw every part at n/a KA, 165whp the norm.
middle ground - ROM tuning, ITBs, almost stock KA's doing 165-175whp.
now - most people realize n/a KA is weaksauce, but fun to drive. few have managed to get proper setups together, and even fewer get actual numbers.
Nobody ever said anything about it being cheap or that it was a streetable motor. It's not cheap but the point was it can be done. The biggest problem with making the power is cam, and crank issues with the ka. nobody ever uses a cam thats worth anything and they never use the right compression. Not to mention the head work.
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Chris
Chris
very true. crower finally puts out a decent cam and cant get the correct lobe centers on them, fuck up the cam cards, and people wonder why their stage 3 280* duration cams sound smoother than stock, and are only pulling 5mmHG of vacuum. lol. worse part of that is jwt cam gears can only do 10* of adv/ret, and when your cams are out 13*, you're SOL.
the other large issue with the KA is that in 4 cylinders, the powerband is usually made higher in the RPM band, which the KA is not really known for being good at.
opening up the cams helps, but the intake manifold is then the bottle neck. once that is opened up, revving past 7500 requires a GOOD balanced rotating assembly, and some rotating mass weight shaving. fluidampers are $left testicle too.
n/a KA is fun, but after that certain initial limit, the power vs money is so out of whack its not worth it to try. but thats why im following some of these newer builds like PDM, greaser, scooter (the ITB guy who was turbo but went back to n/a recently with his haltech). they are getting alot more out of simpler setups with proper engineering, rather than trying to throw n/a bolt on parts at the KA and expect it to breathe like a vtec honda B series.
the key is to extract as much power with as little as possible, and the good tuning helps. this way, balancing out the power vs money ratio will prove that its not such a bad way to go.
the other large issue with the KA is that in 4 cylinders, the powerband is usually made higher in the RPM band, which the KA is not really known for being good at.
opening up the cams helps, but the intake manifold is then the bottle neck. once that is opened up, revving past 7500 requires a GOOD balanced rotating assembly, and some rotating mass weight shaving. fluidampers are $left testicle too.
n/a KA is fun, but after that certain initial limit, the power vs money is so out of whack its not worth it to try. but thats why im following some of these newer builds like PDM, greaser, scooter (the ITB guy who was turbo but went back to n/a recently with his haltech). they are getting alot more out of simpler setups with proper engineering, rather than trying to throw n/a bolt on parts at the KA and expect it to breathe like a vtec honda B series.
the key is to extract as much power with as little as possible, and the good tuning helps. this way, balancing out the power vs money ratio will prove that its not such a bad way to go.
I agree. There were a few guys that were doing custom destroker kits from crower to solve the rev issue. I think it would open up alot of windows as far as the na ka thing goes. I'm not really all that big on the na ka myself but it's cool to see people doing new things with them. I think that boost is a much better bang for the buck as well.
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Chris
Chris
I agree. There were a few guys that were doing custom destroker kits from crower to solve the rev issue. I think it would open up alot of windows as far as the na ka thing goes. I'm not really all that big on the na ka myself but it's cool to see people doing new things with them. I think that boost is a much better bang for the buck as well.
__________________
Wanna see picsfrom carevents in Japan?
http://www.hashiriya.net
R.I.P - Tim Aldrich (Osama Tim Laden)
http://www.hashiriya.net
R.I.P - Tim Aldrich (Osama Tim Laden)
I agree. There were a few guys that were doing custom destroker kits from crower to solve the rev issue. I think it would open up alot of windows as far as the na ka thing goes. I'm not really all that big on the na ka myself but it's cool to see people doing new things with them. I think that boost is a much better bang for the buck as well.
i guess i just look at the motor for its intended purpose. the KA is a midrange torquey powerplant. keep it that way. i get the same feeling when people tell me they want their SR to be a torque monster. it just doesnt happen (well it can with smaller turboes).
I would much rather have an na sr if I were trying to do a na setup. I dont look at a ka in that way myself either. Even though if it was destroked I would like the strength of the cast iron block that the ka offers.
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Chris
Chris


