Replace the engine or have it rebuilt. Once an engine is worn to the point that it has excessive blow by, those are the only real solutions. You could try using a heavierengine oil, but the effect...
blow ratio is the ratio of mold diameter to the preform diameter.
Ummm IDK LOL IM Bore
to reduce you you have to find the two numbers lowest common denominator. Then that is the number that is reduced over the number you got.
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