kgruber
Final Approach
These engines get rebuilt after every 3.6 seconds.
https://www.motor1.com/news/265961/watch-dragster-engine-get-rebuilt/
https://www.motor1.com/news/265961/watch-dragster-engine-get-rebuilt/
I don't replace a cylinder simply due to compression test numbers. Will look at any other issues as well to include using OEM guidance when needed. Have seen engines flying just fine (and legally) with some compression numbers in the 50s/80. So it depends.Where do the you draw the line?-- 60/80 --
there was a time the military would change the whole engine at 400 hours
These engines get rebuilt after every 3.6 seconds.
https://www.motor1.com/news/265961/watch-dragster-engine-get-rebuilt/
Where do the you draw the line?
-- 60/80 --
things to worry about when working on cylinders
do the logs say they were already over sized ? .015" is the limit
who has the tools to do cylinders? the machine that does that job is $50,000. used.
cylinders must have a bushing replace in the rocker are box, price that bushing, plus the hone that sizes it.
Tommy has done a lot of cylinder, the 0-300 price is $969.00 I found I can't compete. You want a custom cylinder plan on $1200.
than they crack.
Heck, Tom, in late 1944 and about a quarter of 1945, the 21st Air Force in the Marianas was lucky to get 50 hours out of the 3350s on B-29s. That couldn't have been very comforting to the crews flying 3,000 mile missions over the Pacific.
The last time I saw that machine it was being scrapped, because no one knew how to use it.Bremerton Wa. use to have a cylinder grinding machine to turn oval shape cylinders back to round, not sure they do that anymore. How many cylinder repair stations have that kind of machine, not many so you get back a oval cylinder as a repaired. You get what you pay for cheap repair of a cylinder or new Tom is right, just how lucky do you feel.