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K20A2 With K24A2 ('06 TSX) Cam Gear Question

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6.5K views 6 replies 2 participants last post by  dawn2dusk94  
#1 ·
I've been reading all over the forum but I can't find one post that has everything all in one place.

I just pulled both the intake and exhaust cams, with the cam gears, out of a 2006 TSX.
My K20A2 has all bolt ons (RBC intake, 74mm throttle body, Hybrid racing CAI, K-Pro, DC Sports header, catback exhaust)
The RSX is being built as a fun street car, possibly for autocross.

1. How much would it hurt performance if I swapped in both TSX cams and kept the TSX VTC gear on the cam for 25 degrees of timing adjustment?
2. Do I need to change my rev limiter from 8600 RPM with both of the TSX cams installed?
3. Do I need to change the TSX exhaust cam gear out, or can I keep it on instead of swapping it with my RSX one?
4. These are pins meant to limit the RSX VTC intake gear. Any opinions vs getting my TSX VTC gear machined to 45 degrees? eBay

Thanks!
 
#2 ·
Dawn2Dusk,

1. It would hurt the midrange power quite a bit TBH. I gained 13WHP (Just in top end) just from running 30 VTC over 25VTC. I would say closer to 20-40 WHP through some of the midrange, but was extreme All Motor Setup.
2. You would still be fine to maintain that 8600 Redline.
3. If you swap the intake cam gear to the K20a2 one, I also would swap the exhaust cam gear aswell.
4. The adding a pin in your existing K20 cam gear is very easy. Would recommend doing that instead of having yours machined. You can get them from TracTuff, I always ran them on every setup, I ever did.

Would recommend getting a retune though on the new cams probably. K24 cams are almost like a DIC swap for an upgrade in cams.
 
#4 ·
I don't know if you are running oversize valves and whatnot or exactly what modifications you are running. Usually our cars don't make more than .5 HP on the higher VTC and usually it honestly drops power off, as soon as trying to go over 35VTC.

The only people maximizing every single VTC are full on drag cars that literally only are started up to make a 1/4 mile pass and be shut off afterwards.

Id grab a 40* pin probably never know when a miss-shift or something like that end up causing things to get a little too close together and end up having, P2V contact and drop a valve or something stupid.