The older blocks have a trap door by the power takeoff, to use for adding oil. The cover is designed not to close exactly over the rectangular opening, but beyond the opening, allowing air into the crankcase preventing changes in pressure.
With older engines there is smoke escaping. The newer blocks have another arrangement.
So could I cover better the opening, and prevent the smoke from freely rising?
A little square of tin attached to the underside of the trap door would help a lot.
Smoke rising from the crankcase could still leave over the flame arrester, or push open the trap door when it could.
With older engines there is smoke escaping. The newer blocks have another arrangement.
So could I cover better the opening, and prevent the smoke from freely rising?
A little square of tin attached to the underside of the trap door would help a lot.
Smoke rising from the crankcase could still leave over the flame arrester, or push open the trap door when it could.
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