Here’s a picture

Hi would you sell the Rogers gas peddle? If so how much?

Sorry I don’t have a Roger’s gas pedal


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I run this one up and down the river in the low 90s safe driving excellent handling boat, it’s a 19 with dropped chines TR


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Thats a sweet looking boat bud.

Thank you brotha


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Looks great


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Thank you we stay at waterwheel resort above Blythe


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Pick up one of these oscillating tools. They are perfect for cutting fiberglass. I used one to cut the fiberglass tanks out of the Rogers.

https://m.harborfreight.com/power-tools/oscillating-tools/variable-speed-oscillating-multi-tool-63111.html

I glassed the tanks on the sides as well.

That tool is the shit careful sanding down the glass on the tanks so that you don’t make the tanks any thinner than they already are


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714 906 2154


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That’s awesome! Who did the paint?!


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Pics


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Scrubbing bubbles and magic erasers for cleaning, all conditioners listed are great choices..

"It cleans the bowl so you don't have tooooo" - Joe dirt


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Looks like the results of detonation.  I see a lot of pitting on the pistons.  I bet you will see a lot of "peppering" on the ceramic of your spark plugs where molten aluminum from your pistons has transferred to the plugs.

In your first picture, pistons get really weak where the valve notch gets dangerously close to the top ring groove.  A true blower piston will have a thicker top ring land to increase strength in this area and to keep the top ring running cooler.  I like to blend a radius there where the two intersecting cuts form a sharp edge and create a stress riser.

Depending on your combination of parts, you could be over 9.2:1 static compression ratio.  I think you have a cam where the intake lobe closes early, building a lot of cylinder pressure.  Iron heads retain a lot of temperature in the cylinders.  I bet you have a fairly high dynamic compression ratio.  Even a little boost could throw it into detonation.

How much run time would you estimate?  Did you clean the burn pattern off the pistons before you took these pictures?  If you did not clean the burn pattern off, I don't believe that it is a lean condition because the pistons are so clean, like they were just solvent washed.  I think there is a lot of liquid fuel present in the cylinders, during combustion, that is detonating at peak cylinder pressure ATDC.

I can't really see a cross-hatch pattern on the cylinder walls.  There is definitely a ridge at the top of cylinders for not much run time.  Your first picture looks like the cylinder cross-hatch has been completely worn off by the rings, possibly from fuel washing the oil out of the cross-hatch valleys.  Is it possible that you hydrostaticly locked the cylinders just enough to break the piston?  I'm not saying there is not a detonation problem though.

I would also check the rings for signs that the gap is too tight and if the ends of the top ring have butted.

Maybe these videos will help:





Good luck,

Joe

I probably have 10-12 hours on the motor and the pistons look exactly the same as when I pulled the head no solvent washing just wd40 the cylinder walls with a rag. The cam spec is a HR 620 lift 235 duration 112 LSA.. pistons are SRPs I'm thinking about changing all of them. I was thinking I shot my self in the foot with low octane. On this trip I had half tanks of month old gas topped if off with 91 then threw this Lucas oil octane booster in that I've never used.


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Dude this thing is over the top! Badass


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