Re: Derbi porting

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Also to address the scratches on the piston before anyone asks, I must have missed a burr when I cut out the top window piece on the cylinder skirt itself, that happened when I put the piston in to trace the opening to cut the window, I lightly hand sanded the scratches with 400 and they can no longer be felt, luckily the the rings were unhurt (they were in at the time but no marking on them, and that’s why I took em off, made sure to label which one was on top.)

Here’s the ramp angle from the side, I did my best to make a nice smooth slope to help the charge flow as smooth as possible, it’s still rough like 120 grit, so it should not be smooth enough to bead up on the ramps. I know a little texture is good in the ports to help atomize the fuel.

image.jpg
image.jpg
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Subject Written By Posted
  Derbi portingTopic by: Wolf Wizard Wolf Wizard 08/24/21 09:08PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/24/21 10:47PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 01:16AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/25/21 01:24AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/24/21 10:54PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 01:18AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 01:15AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 10:19PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/25/21 10:42PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 11:19PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/25/21 11:24PM
  Re: Derbi portingRe: pat splat pat splat 08/26/21 02:18PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/26/21 03:57PM
  Re: Derbi portingRe: Alan Jackson Alan Jackson 08/26/21 04:43PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/26/21 11:58PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/27/21 12:13AM
  Re: Derbi portingRe: Alan Jackson Alan Jackson 08/27/21 02:18PM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/28/21 04:20PM
  Re: Derbi portingRe: Dirty30 Dillon Dirty30 Dillon 09/02/21 02:00PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/27/21 01:20AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/27/21 10:26PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/29/21 01:10AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/29/21 01:27AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/29/21 09:28AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/29/21 09:57AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/29/21 12:24PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/29/21 02:05AM
  Re: Derbi portingRe: Emil Kniemel Emil Kniemel 09/02/21 12:16PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/21/21 07:45PM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 09/21/21 08:50PM
  Re: Derbi portingRe: Jose Castanon Jose Castanon 09/21/21 09:10PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/22/21 02:17AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/26/21 10:39PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 09/26/21 11:24PM
  Re: Derbi portingRe: - Joe - - Joe - 09/27/21 09:16AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 12:01AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 01:02AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 09/27/21 01:19AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 01:36AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 09/27/21 01:39AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 01:46AM
  Re: Derbi portingRe: MPB Andyrew MPB Andyrew 09/27/21 09:53AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 09/29/21 06:18AM
  Re: Derbi portingRe: Jacob Fulton Jacob Fulton 09/27/21 10:24AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 12:58PM
  Re: Derbi portingRe: Graham Motzing Graham Motzing 09/28/21 10:46AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 02:06PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/28/21 12:54AM
  Re: Derbi portingRe: pat splat pat splat 09/28/21 05:07AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/28/21 09:01AM
  Re: Derbi portingRe: pat splat pat splat 09/29/21 12:09AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/28/21 10:53AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/08/21 11:33PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/09/21 01:24AM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 12:25PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/09/21 01:07PM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 01:18PM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 01:22PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/09/21 06:21PM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 08:43PM

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