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387 Views 2 Replies 3 Participants Last post by  slayerfish
Hi I my cylinders were bored out 20 over. Now do I have to increase my main jet by 2 sizes?? and also when assembling the engien do I ssoak the crank in 10 30 oil and coat the rings and cylidner walls with 10 30? Thanks
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You dont have to increase jet siize.You can coat lightly the piston with oil before reassemblinig,same for crank bearings.
If you use oil on the pistons, use 2-stroke oil. Otherwise that white motor rebuilding grease works xcellent. No need to soak the crank, although that wont hurt anything. Just squirt 2-stroke oil in the bearings.
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