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Found 3 results

  1. I have a P90a head (Solid lifters) I want to upgrade with larger valves I have found out that I can increase the size by 1mm on the inlet valve and 1,5mm on the exhaust valve without having to change the valve seats. So the question is where can I by oversize valves ? UPDATE: I have found...
  2. Greetings Z enthusiasts, I am in need of a set preferably or at least a couple P90a hydraulic lifters. I bought the timesert inserts to convert but would rather stay with the hydraulic ones if possible (I have one possibly two bad lifters). I figure it's worth a shot before I tear this head ap...
  3. I have a P90a (Non Hydr) that i'm planning on oppgrade with new larger stainless steel valves and I wonder how large valves can I use before the valve seats needs to be replaced ? And is it necesarry to do anyting with the valve guides to use stainless steel valves ? Thanks.
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