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AzBob · 08-20-2019, 01:24 PM

I live in a hilly area at 5300 ft. elevation. Installed the Prus 8:1 head on my stock ’26 runabout last year. Best upgrade for the money. Like the ad says, “Flattens the hills”. A hill I had to previously drop down into low with I can now maintain 35 mph in high. No pinging and no concerns with babbit or crank (have EE crank). Over 1000 miles now.

08-20-2019, 01:24 PM	#4
AzBob Senior Member Join Date: Oct 2018 Location: Prescott, AZ Posts: 130	Re: High compression head question I live in a hilly area at 5300 ft. elevation. Installed the Prus 8:1 head on my stock ’26 runabout last year. Best upgrade for the money. Like the ad says, “Flattens the hills”. A hill I had to previously drop down into low with I can now maintain 35 mph in high. No pinging and no concerns with babbit or crank (have EE crank). Over 1000 miles now.