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Old 11-18-2019 | 08:31 AM
  #102  
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sfox1026
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Joined: Dec 2013
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From: Bermuda
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Originally Posted by British Menace
Yes. Add 0.1 shim. Or better still. Measure the head clearance (the "squish") and shim to get it to around 0.6 to 0.7mm if using 25 or 30% Nitro.
After break in (original plug) use an RP7 plug or even and 8.
Hope that helps.

Regards
BM
Thank you for your reply.

Sorry another question. If I could ask for a better description of measuring head clearance. Are the measurement taken with piston at TDC and just the head button installed with no piston?
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