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"Improving" a G-62??

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Old 02-17-2006, 02:54 PM
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Pelle Gris
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Default "Improving" a G-62??

Hey guys...

At the moment my G-62 is disassembled to fit a new crankshaft. While looking at the cylinder I noticed that there were edges in the intake and exhaust... Hard to explain, but when you put your finger in the intake port you can feel an edge right before entering the cylinder.
Also the edges in the transfer ports are very sharp and a bit uneven.
Would it improve the power if I removed these edges?

I have heard that polishing the transfer ports should also improve the power, but I have also been told that polishing too much will be a bad thing? Something about the fuel forming droplets on the inside walls, instead of flowing quickly into the cumbustion chamber.

Advise will be accepted gratefully.

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Old 02-17-2006, 08:40 PM
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Default RE: "Improving" a G-62??

Don't screw with it unless you want to send it to a professional and have it REALLY ported and re-worked. They aren't "perfect" from the factory. There are monir "defects" in all engines when they come from the factory. Won't hurt it. Just run it.

Best thing you can do with it is put an electronic ignition on it and replace the stock muffler with a lighter aluminum muffler that will not only weigh less, but allow it to flow better.
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Old 02-17-2006, 11:43 PM
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Default RE: "Improving" a G-62??

I would ask ralph cunningham,he's done more w/a g62 then anyone .
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Old 02-18-2006, 02:35 AM
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Default RE: "Improving" a G-62??

I just make 'em lighter, not faster...Wish I knew how...I tried a few things on some other engines, ended up running slower..
Try Fastrat porting, he's on here somewhere
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Old 02-20-2006, 08:02 PM
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Pelle Gris
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Default RE: "Improving" a G-62??

Thanks for your suggestions. I have however removed the edges in the exhaust and intake ports. Now I just hope I haven´t ruined the engine..
I plan on making a longer header for the muffler I already have, and thereby get a little more power than stock.
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