what makes the K series so special?

[aaronng]

a b series and a d series is completly different in design.. that is what im looking for....

essently a b series will run high comp and different head...
b series twin cam vtec... which is not available in d series..

and that would be why it is making more power..

You can increase the compression of the D using aftermarket pistons. D series also came in DOHC but without VTEC. VTEC doesn't make power. The cam specs do. If you had a DOHC D series with aggressive cams, balanced internals and I/H/E/ECU to match, you can make more power than a stock B16a.

All VTEC does is let you use lumpy highcams while keeping conservative lowcams so that the car remains drivable at low RPM and returns good fuel consumption.

[BlitZ]

this is the stuff im an after...
The question was asked in on clubitr..

Porting is different in the k series.. its apparently much better

So the head on a k is much better than a B...

http://www.pbase.com/driftking/image/24936792

[BlitZ]

Between the B and K, the big difference is in the ignition timing. In the K, each spark plug has its own coil pack and ignition is controlled by the ECU. So depending on load, RPM, throttle opening, the ignition timing can be varied to produce optimum torque. Basically, the K can retard and advance ignition timing on the go. The B, using a dizzy has a fixed ignition which you either only retard or advance.

Then you have difference in the i-VTEC mechanism where VTC in the K is able to advance the intake valve timing (up to 50º for the K20A2) based on the same conditions as well.

thanks thats exactly what i am after... (should just delete all the OT stuff)

i didnt want an answer of the engine are the same.. haah just tuned more with lighter components... than what is a race built engine with ported and polished head which still produces less than an almost stock k? coomponents not light/balanced enough?

[ginganggooly]

Rumour has it that the K-series heads flows a healthy amount more than the B-series heads. My guess would be that this is to do with the design of the ports, valves and combustion chambers...

[WPN.22R]

ive seen the difference between a H22 and a K20 head.. WOW the porting difference is amazing.

the K head looks like its had a massive porting job compared to the H.. flows ALOT better.