K20 & K24
User avatar
By ohDirka
#328937
kylenjdm93 wrote:It's not bad, slow as Fuuuuuu even with the charger I'm going to mod his 310 cc injectors to 530cc soon, upgrade the pulley and throes the other basenap from ft on his kpro and then go get it tuned up in Seattle hopefully it pulls harder we may need some other parts too like a set of pistons to raise the comp a little more than it us


Watch when you put a smaller pully on it though. Depending on how much smaller you go it could increase the amount of knock, thereby causing some serious detination issues. All the knock and stuff would be eliminated though if it is taken somewhere and tuned of course. :thumb:

Does anyone make a modular pully system for these?
User avatar
By kylenjdm93
#328942
ohDirka wrote:
kylenjdm93 wrote:It's not bad, slow as Fuuuuuu even with the charger I'm going to mod his 310 cc injectors to 530cc soon, upgrade the pulley and throes the other basenap from ft on his kpro and then go get it tuned up in Seattle hopefully it pulls harder we may need some other parts too like a set of pistons to raise the comp a little more than it us


Watch when you put a smaller pully on it though. Depending on how much smaller you go it could increase the amount of knock, thereby causing some serious detination issues. All the knock and stuff would be eliminated though if it is taken somewhere and tuned of course. :thumb:

Does anyone make a modular pully system for these?


sorry I was typing on my cell the other day, ct engineering has basemaps for they're kits, for example, they have a basemap for oe injectors and 5psi pulley, they have a map for 520cc modded oe injectors for the 8 psi pulley

the basemap is designed for emission passing in the 50 us states.

obviously if you want more power you can make your own pulley or buy one, and have it professionally tuned

we will be taking it up to get tuned in seattle in a few months when he has the cash saved up...

as for the modular pulley system...

http://www.pulleyboys.com/store/home.php

and ct-engineering sells pulleys

we have a local custom machine shop that can cnc mill one out if you have the right size that is...

one could figure out the size per lb of boost

for example

if 3.4"=5psi
if 3"=8psi.

any way you get the idea
User avatar
By kylenjdm93
#328943 decreasing the pulley size....

that increases boost which we both know increases knock...

hes not going for a land speed record or anything crazy like that...

just wants a little more pull for the heavy rsx
User avatar
By ohDirka
#328944 Alll right. I was just throwing it out there. I know my old roommate had a GTP and he was always having knock issues. Turned out to be because of the size of the pully was way smaller than his supporting mods could support.

But you seem to know what your doing. So press on... :thumb:
User avatar
By kylenjdm93
#328951 Thanks, I have a mechanical engineering degree with emphasis in engine design and theory so ya I know what I'm doing... just a little lol :thumb:

And also was an ase certified mechanic ... hate being a mechanic so I went into the family business of insurance

I miss doing the engineering stuff but it makes little money
User avatar
By kylenjdm93
#328993 ct-engineering has the 5-6lb 3.6" pulley, and the 7-8lb 3.15" pulley

they are 109.00 each :thumb:

I got a great deal on some pistons and rods for the rsx, so bumping up the compression ratio will be better for power in this slow turd...

I posted earlier the original owner of the car put the charger on in 07

he replaced the pistons with lower compression pistons he said out of the k20a3, 9.8:1, wow! what a bummer! no wonder this thing is slow, I did however....

put a boroscope down this things head and yep sure as shit they are k20a3 pistons...

why did he do this? his tuner in Oregon told him this is best for boost.

:eh: :eh:

were going to throw in some 12.5:1 since I have them in my k20a r eg coupe and I plan to supercharge it also :twisted:

get a great tune done and a decently powered rsx we will have.
User avatar
By ohDirka
#329010
kylenjdm93 wrote:why did he do this? his tuner in Oregon told him this is best for boost.


Misconception. I was always told lower compression was better until I really got into how motors work. I think its just one of those rumors that everyone tells but they don't really know the concepts. But lower compression would be safer right?
User avatar
By kylenjdm93
#329839 it doesn't really matter, take a look at the new Honda tuning, granted these guys are stricktly drag racing, non the less, they are running high compression if we say that 10.5:1 is the middle for compression... not high not low

you can cram 30psi, into a engine with 12.5:1 comp with a sleeved block and the right tuner, and other goodies such as cams, valves, rods, ported head, big intake manifold to contain all that, plus the proper amount of fuel needed and achieve a reliable 800+ whp and massive torque

with low comp pistons the torque curve is so low, this is because your not forcing that piston down as fast as you would with a higher compression as the high comp pistons have less room for air when it fires

I got to go to an apt with my wife but I will continue this when I get back