The 138190023 Clone Fire Ring Head Gasket is the standard head gasket for many 196 clone engines. 

This Composite Head Gasket with a metal fire ring has better sealing than the thin metal head gaskets. Recommended by the top engine builders for modified engines. 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

Gasket Specs

– Composite Fiber with Fire Ring

– .045-.050″ 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

40.4.19.4: Minimum Combustion Chamber Volume

Minimum combustion chamber volume when mounted on engine @ TDC is 26.5ccs. 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.