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Ed Wright · 03-07-2019, 12:29 PM

Napier style second rings help with oil control, and require less oil ring tension. Using a fish scale to measure drag, I've been down to 4.5lb drag, but got some blue smoke at times. 6 lbs seems to run just as fast, with no blue smoke. 4" bore.

03-07-2019, 12:29 PM	#21
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: question on rings ? Napier style second rings help with oil control, and require less oil ring tension. Using a fish scale to measure drag, I've been down to 4.5lb drag, but got some blue smoke at times. 6 lbs seems to run just as fast, with no blue smoke. 4" bore. __________________ Ed Wright 4156 SS/JA