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Camshaft compatiblity

1K views 2 replies 3 participants last post by  LotusElise 
#1 ·
I’m just wondering if anyone knows if k20z3 camshafts would work in a base model k20a3 motor?
 
#3 ·
The K20Z3 is a 3 lobe system, the K20A3 is a two lobe system. You need a work around to make it possible. Two options:
  1. Swap in a Z3 valvetrain, but you will have challenges to get a lost motion spring in it without the bracket. Do a search here, some guys made a receipt to solve it.
  2. Do a VTEC killer setup like this one: 196hp k20a3 (Vtec killer, k20a2 cams) | Honda / Acura K20a K24a Engine Forum
don't expect any kind of OEM drivability at low to mid revs.
Definitely when using option 2. 🆙
 
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