k20 vs f20c

slammeds2k · Post by **slammeds2k** » Mon Feb 02, 2009 12:20 am

I know that there are a few different k20s but what is the main designs differences between the two.

Phate · Post by **Phate** » Mon Feb 02, 2009 6:06 am

How the vtec works.

http://en.wikipedia.org/wiki/Honda_K_engine

slammeds2k · Post by **slammeds2k** » Mon Feb 02, 2009 2:30 pm

So from what I read on both engines is that the K series is Ivtec and only has vtec on the intake side of the head. The F20c has vtec on both intake and exhaust sides Im assuming thats where the power increase comes from The thing I like bout the K is the cast Iron sleeves. But they are both pretty FN sweet if you ask me

LSEKHatch · Post by **LSEKHatch** » Mon Feb 02, 2009 8:04 pm

some k's have it on both the exhaust and intake. But yes both BA engines if you ask me.

miz92lude · Post by **miz92lude** » Tue Feb 03, 2009 4:16 pm

Don't forget the the I in the I-vtec aka the varible cam timing think vvti

tyler7 · Post by **tyler7** » Tue Feb 03, 2009 9:49 pm

ok motors like the k20a3, k24a1, k24a4,ect. have a small 2 lobe vtec (instead of 3) which is only on the intake cam and it ingages at 2300rpms and all of these motors are made basicly for the gas mileage, not as a high reving motor.
now motors like the k20a, k20a2, k24a2, k20z1 and k20z3 have the vtec just like the ones in a b16 or b18 with three lobes. but what is different about the k-series and f-series is that on the intake cam there is a varibal cam gear but not one on the exhaust cam.

slammeds2k · Post by **slammeds2k** » Wed Feb 04, 2009 3:08 am

tyler7;162304 wrote:ok motors like the k20a3, k24a1, k24a4,ect. have a small 2 lobe vtec (instead of 3) which is only on the intake cam and it ingages at 2300rpms and all of these motors are made basicly for the gas mileage, not as a high reving motor.
now motors like the k20a, k20a2, k24a2, k20z1 and k20z3 have the vtec just like the ones in a b16 or b18 with three lobes. but what is different about the k-series and f-series is that on the intake cam there is a varibal cam gear but not one on the exhaust cam.

Well I dont jave any variable cam gears at all I have fixed position gear drive cams.

tyler7 · Post by **tyler7** » Wed Feb 04, 2009 12:36 pm

o my bad i juess k's are the only ones then.