SwimmingDragonfly96
Well Known Member
Rv7a with a yo-360-A1a, 280 Hobbs total, purchased 2007, first start 2014.
Got some devastating news from my A&P today about my #2 cylinder. I bought this plane, had a pre buy done by an AP/DAR/RV builder, and everything looked great. All cylinders measured 79/80 cold, clean oil analysis on every single oil change.
I have now flown the plane a fun 30 hours. I’m a paranoid guy so I wanted an RV expert up in the bay to give my plane a once over. He just called and told me my #2 cylinder is showing 0 compression with air going through to the case. Didn’t even realize I had engine troubles, even my JPI data looked fine during my flight to the A&P. He cut the filter, no metal, cylinder wall looks fine by borescope, so it must be busted rings? Either way he recommended I replace the entire cylinder.
Just wanted to vent but if anyone has any suggestions or a line on a millennium cylinder kit, please let me know. ALSO, is it normal for a new engine manufactured by lycoming to have millennium cylinders?
Thanks.
EDIT: Spoke to the builder and he said he replaced the covers with the millennium covers when he switched to silicone gaskets. If it comes to a cylinder replacement (which it seems like it might), my A&P says it’s fine to mix and match cylinders. Is this true? Sorry for being a newb, I’m still in disbelief and I bought this plane due to its seemingly excellent condition low time factory new engine.
Got some devastating news from my A&P today about my #2 cylinder. I bought this plane, had a pre buy done by an AP/DAR/RV builder, and everything looked great. All cylinders measured 79/80 cold, clean oil analysis on every single oil change.
I have now flown the plane a fun 30 hours. I’m a paranoid guy so I wanted an RV expert up in the bay to give my plane a once over. He just called and told me my #2 cylinder is showing 0 compression with air going through to the case. Didn’t even realize I had engine troubles, even my JPI data looked fine during my flight to the A&P. He cut the filter, no metal, cylinder wall looks fine by borescope, so it must be busted rings? Either way he recommended I replace the entire cylinder.
Just wanted to vent but if anyone has any suggestions or a line on a millennium cylinder kit, please let me know. ALSO, is it normal for a new engine manufactured by lycoming to have millennium cylinders?
Thanks.
EDIT: Spoke to the builder and he said he replaced the covers with the millennium covers when he switched to silicone gaskets. If it comes to a cylinder replacement (which it seems like it might), my A&P says it’s fine to mix and match cylinders. Is this true? Sorry for being a newb, I’m still in disbelief and I bought this plane due to its seemingly excellent condition low time factory new engine.
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