Replacement parts

ENYA SS 35 was disassembled only on the front housing portion for the purpose of setting up pressure nipple, in combination with YS fuel pressure regulating system.
The bearings for main crank shaft supporting is #6901 and for front is R4A inch size promptly. The capacity of their road is adequate design for this 35 motor.
Careful scaling was performed to establish the most suitable pressure withdrawing timing, nipple position and crank shaft engraving point both are very important requirement for proper performance of the regulator, between 105 and 160 degree value ATDC is the key to success.
As for an original carburetor, 6,5 mm throat diameter is designed for the use under natural aspiration condition, but judging from an actual scaling the port gas way in the crank shaft, 7,5 mm diameter, more 1 mm wider throat wold be effective for the ultimate performance if operated under fuel pressurized condition.

Consequently, ENYA GM type carburetor with 7 mm diameter throat is invited for the upper purpose. The mechanical construction of GM carburetor makes it possible to adjust mixture as to attain the best low rotational condition not only natural aspiration but fuel pressurized conditions.
The reputation of SS 35 among the modelers is not so favorable because of narrower in take gas way in the crank shaft, but my modification would thoroughly wipe out such kind of rumor, YS fuel pressurized regulating system is the only way to do that.