I was currently looking at toda racings website, does anyone know if TODA products support the k20a3's? i know they support the type s and type r.

Basically i just wanna know if i buy TODA High Rev Camshafts for my k20a3 ep3 will be compatable or not.

 

ep3 no...

 

they have parts for the dc5 and ep3

if they fit on a K20 and K20A2 so techinically the camshafts should fit in a K20A3 right?
Im just trying to find the technical reasons why i can let them fit in my car

 

different heads, k20a2 and k20a have three lobes (that's why they have a "true" VTEC crossover point) while k20a3's do not... their VTEC engages at around 2200 and lasts throughout the rpm band. k20a3's VTEC is to improve torque, while k20a and k20a2's use it for higher power.

you need to replace the head to an k20a or k20a2's before the cams will work.

 

The heads on the K20A/A2 and the K20A3 are
vastly different.
The K20A3 doesn't have exhaust lobes and
under a low rpm (~2200), it is essentially a 12 valve engine.
The K20A/A2 has "true" VTEC and a higher crossover, so higher lobes would work well in that situation.