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This is the non-coated metal head gasket used to gain compression on the standard 196cc or 68mm blocks. The head gasket fits the 68mm standard bore and bore sizes up to +.75mm over. The head gasket fits most 68mm bore blocks including Clone 6.5hp 196, Ducar 196, Tillotson 196R/RS, Box Stock 196, and Honda GX200 Engines. This does not fit 70mm 212 Engines
• .009” ± .001” Thick
• Maximum Bore 68.9mm ± .05mm
AKRA 2020 Rules for Head Gasket
Head Gasket/s maybe aftermarket, must be of stock configuration, gasket thickness is non-tech item, sealer allowed to insure proper seal.
NKA 2020 Rules for Head Gasket
22.214.171.124: Minimum Combustion Chamber Volume
Minimum combustion chamber volume when mounted on engine @ TDC is 26.5
cc’s. This is to be done after the event and when the engine has cooled down to
a reasonable temperature. The Head gasket required, but thickness is non-tech and
can be either steel or aluminum. Multiple head gaskets are allowed.