I Broken-in my motor with 30% nitro but didn't add the suggested .1mm head shim to compensate for the higher nitro content ... I measured the current tdc piston-head clearance at .024"
The motor seems to be running fine after 8 tanks (200-210F), should I really consider adding .1mm head shim or it's more like it'd be a safer way to run the motor but not a must?
There are some gold-brownish deposits on the piston and head ... could it be related to the head clearance being too small or just too rich carb settings?
My motor is a V12 01700-000410
Thanks.
Steve.
[ 02. May 2006, 22:04: Message edited by: Racin Steve ]
Posts: 7 | Registered: May 2006
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