At 1250 hours I'm getting leakage past my exhaust valves in 3 of my cylinders, possibly time for a top. What brand cylinders are prefered these days for an o470L. The cylinders on it now are second run chrome and too old for me to overhaul.

Regards,

Jim

Anything but ECI!

I just replaced 2 chrome with 2 new milleniums on my o-300 yesterday. Installtion was good, parts looked to be high quality and the test flight this morning went great, so I give a thumbs up for milleniums. Air-Power, Inc. out of Arlington TX had the best prices.

I have ECI Titan's-----that is what Central Cylinder in Omaha was promoting even though they are a Continental dealer. They showed me a factory 520 cylinder that had a heck of a ridge at the top and was pretty low time-----poor metal quality was the thought.

What's wrong with yours. Ship them off to Larry Brown in Tulsa and have him fix them up. I've become a firm believer in finding the oldest continental steel cylinders I can find and having them cleaned up by Larry.

AEROPOD wrote:What's wrong with yours. Ship them off to Larry Brown in Tulsa and have him fix them up. I've become a firm believer in finding the oldest continental steel cylinders I can find and having them cleaned up by Larry.

Not sure if this is the same outfit, but all of my cylinders were "overhauld" by Brown Aviation in Tulsa OK less than 300 hrs ago. Every cylinder had to be pulled between 2.5 and 25 hrs after overhaul to have the valves redone. #5 cylinder had been removed 3 times. I finaly bit the bullet and bought 2 new milleniums. I know 470 cylinders are a bit more expensive but given the cost of brand new cylinders with all new parts and design, I think overhauling them is a joke!

Jeredp wrote:

AEROPOD wrote:What's wrong with yours. Ship them off to Larry Brown in Tulsa and have him fix them up. I've become a firm believer in finding the oldest continental steel cylinders I can find and having them cleaned up by Larry.

Not sure if this is the same outfit, but all of my cylinders were "overhauld" by Brown Aviation in Tulsa OK less than 300 hrs ago. Every cylinder had to be pulled between 2.5 and 25 hrs after overhaul to have the valves redone. #5 cylinder had been removed 3 times. I finaly bit the bullet and bought 2 new milleniums. I know 470 cylinders are a bit more expensive but given the cost of brand new cylinders with all new parts and design, I think overhauling them is a joke!

I've been using nothing but overhauled cylinders for as long as I've been fixing airplanes and my dad has done the same for 30 yrs before that and we had one problem from a shop here in CO. We were able to find that before install, so it was an inconvenience more than anything. Just my experience, probably worth what you paid for it.

I haven't had to buy any cylinders yet, but to a layman it seems like a real crapshoot out there. I think at this point I've heard some version of "Whatever you do, don't buy _____" for all manufacturers.

What cylinders do you 135 guys run?