Taking a leakdown
I’m not in the Facebook group but I couldn’t help noticing John Campbell’s plea in the last month’s letters about his Suzuki X1 and his request for tips to get it running .
He says he’s never worked on a two-stroke before. He’ll enjoy it and find it easy and rewarding once he’s grasped the fundamentals of the loop scavenge system. It’s all about maintaining crankcase pressure. So make sure there are no leaks in either the intake or exhaust system, fit new crankcase seals regardless of how the originals look, and perform a leakdown test on the engine once it’s built.
Block off both inlet and exhaust with airtight plugs and then pressurize to 8psi. The engine should show NO loss of pressure for at least 10 minutes. With that achieved, he will then have an efficient, longlasting engine operating at peak performance. Then he can enjoy his 32mph flat out to the maximum. On the plus side he’ll have a lot of fun when he’s derestricted it. John Burgess, Wolverhampton
X1 in fine fettle fairly flying along