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tubman · 09-06-2019, 07:26 PM

If you haven't done it already, I'd try the MMO treatment. Regarding the bronze-lined guides, I'd have installed them in my engines in a heartbeat if I had known about them when I built my last two engines. That being said, the only sticking valves I have ever encountered in a flathead V8 were two in a 41,000 mile '50 Ford that had been put in a garage in 1954 after a tree fell on it in a storm. I pulled it out in 1989, and got it running and it had two stuck exhaust valves. The improved guides will solve your problem for sure, but since it is a fresh assembled engine, try the MMO first. You have nothing to lose.

09-06-2019, 07:26 PM	#9
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,319	Re: Intermittent sticking valve If you haven't done it already, I'd try the MMO treatment. Regarding the bronze-lined guides, I'd have installed them in my engines in a heartbeat if I had known about them when I built my last two engines. That being said, the only sticking valves I have ever encountered in a flathead V8 were two in a 41,000 mile '50 Ford that had been put in a garage in 1954 after a tree fell on it in a storm. I pulled it out in 1989, and got it running and it had two stuck exhaust valves. The improved guides will solve your problem for sure, but since it is a fresh assembled engine, try the MMO first. You have nothing to lose.