C20XE Catcams

[@alknew69]

The problem for the power in high rpms are the intake manifold, mostly. Because I had many stages on my c20xe and c23xe, I showed that even with the std c20xe cams in a c23xe setup (94,6mm stroke) you can go easy up to 7800-8000rpm... Ofcourse with a good headwork, custom intake manifold, good exhaust manifold

[@zoloj]

Thank you for the advice! I have to say honestly, I have a custom intake manifold inspired by yours. Altough it is a bit a longer so it is for about 5800-6000rpm peak torque. Headwork is done by me on std size valves and I have Lexmaul manifold. What I've found out since this stage that the standard C20XE MAF hold me back. Now I've changed it to C25XE MAF and it is a lot faster.

[@speckmann97]

Do you sell your Intakemanifold? Greetings Germany

[@motorsmeden]

Hello. How do you like the catcams compared to the dbilas 272? What is better, and what is worse? 😄 Cheers

[@zoloj]

Hi! Catcams with 10,95mm was a lot better also was a bit harder to dial in but the car got quicker (of course measured). I recommend it over the 272 dBilas or even bigger cams. Lately I had a special grind on the inlet side over 300degree@0,1mm and peak lift 11,3mm with Schrick springs and was even better. Edit: now I have Supertech 34mm inlet valves waiting to be fitted... we will see how it goes/sounds.

[@motorsmeden]

Thank you for awnsering😁 Did you fit other springs with the catcams? How many hp did it make?

[@zoloj]

@@motorsmeden No, Catcams were designed to use with original springs. I think this is the biggest you can have with std ones. I have never dynoed it, I don't really care. Acceleration measurements is what I use for fine tuning and thus the torque curve. BTW the car with full interior does 80-120kmh 4,4sec in 3rd gear (std 5,5-6s) and 3,8sec with a gear shift (measured with proper accelerometer multiple times). E46 M3 standard is about 3,6sec, so you can have an idea by that.