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Spud Miller's Cave / Re: Time for some changes
« on: December 17, 2018, 10:47:04 PM »
Matt Hadford at Total Seal told us to have our machine shop that would be doing the honing call them to get the right hone program, because it's different when we are burning alky, rather than gas.
So I would call your ring guy about low %'s of nitro.
Back in the day , 60's-70's my real nitro JrFueler we ran 10.75-11-1 pistons on 98% nitro in a all iron 301 ci SBC. For a while we ran a dykes SS top ring, as suggested by our piston guy. We had a real hard time getting the ring to seal, but they said "it's the hot set-up', so we would take all apart after each week-end, and change the hone angle, clean it all up and run it again, after trying that program about 6-8 times we finally gave up and went back to a moly ring. I figured the SS was working good on gas, not so on nitro.
I've heard the top fast Heritage A/f guys are running around 12-1 on 90+ nitro, and they run in the 5's at 230+mph
Good Luck,
Jon
So I would call your ring guy about low %'s of nitro.
Back in the day , 60's-70's my real nitro JrFueler we ran 10.75-11-1 pistons on 98% nitro in a all iron 301 ci SBC. For a while we ran a dykes SS top ring, as suggested by our piston guy. We had a real hard time getting the ring to seal, but they said "it's the hot set-up', so we would take all apart after each week-end, and change the hone angle, clean it all up and run it again, after trying that program about 6-8 times we finally gave up and went back to a moly ring. I figured the SS was working good on gas, not so on nitro.
I've heard the top fast Heritage A/f guys are running around 12-1 on 90+ nitro, and they run in the 5's at 230+mph
Good Luck,
Jon