Re: porting picts and success and failures

EH 📣FCC of the QCB /
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> Dirty30 Dillon Wrote:

> -------------------------------------------------------

> Why thirds of all things?

>

> I suggest investing in gaskets and start by widening exhaust 1.5-2mm on

> each side, raising it 1mm, and smoothing the intake for flow. From

> there, you can test and try more.

Yesth....I usually start with widening 2 and raising 1. Measure and check the ring pin won’t snag the exhaust and make some final porting from that.

Now I just draw on it with a marker and go at it. With time it gets easy.

You really don’t want the width to be more than 65% of the bore. I know there is an actual # in the 2 stroke tuning handbook. I can remember what it is. One of the reasons why puch Polini’s rip so hard out of the box is they are already 62% of the bore...... don’t quote my #s I am sure someone knows the real percents.

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Subject Written By Posted
  porting picts and success and failuresTopic by: pat splat pat splat 02/03/19 02:33PM
  Re: porting picts and success and failuresRe: pat splat pat splat 02/03/19 02:36PM
  Re: porting picts and success and failuresRe: Adam Smith Adam Smith 02/03/19 03:14PM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/03/19 10:31PM
  Re: porting picts and success and failuresRe: patrick stover patrick stover 02/03/19 11:00PM
  Re: porting picts and success and failuresRe: Seth B Seth B 02/03/19 03:34PM
  Re: porting picts and success and failuresRe: Adam Smith Adam Smith 02/03/19 03:45PM
  Re: porting picts and success and failuresRe: Daniel '' Daniel '' 02/03/19 03:53PM
  Re: porting picts and success and failuresRe: Alan Jackson Alan Jackson 02/07/19 06:48AM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/07/19 11:27AM
  Re: porting picts and success and failuresRe: Alan Jackson Alan Jackson 02/08/19 03:53PM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/08/19 04:45PM
  Re: porting picts and success and failuresRe: Alan Jackson Alan Jackson 02/08/19 05:22PM
  Re: porting picts and success and failuresRe: EH 📣FCC of the QCB EH 📣FCC of the QCB 02/08/19 09:55PM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 09:44AM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/09/19 11:13AM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 11:19AM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/09/19 12:46PM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/09/19 12:47PM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 01:09PM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/09/19 01:40PM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 01:56PM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/09/19 02:33PM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 09:47AM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 02:46PM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/09/19 02:52PM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 03:12PM
  Re: porting picts and success and failuresRe: Totally normal JBOT Totally normal JBOT 02/09/19 05:33PM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/09/19 06:00PM
  Re: porting picts and success and failuresRe: pat splat pat splat 02/10/19 04:49PM
  Re: porting picts and success and failuresRe: sketch mo sketch mo 02/11/19 08:50PM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/12/19 04:19AM
  Re: porting picts and success and failuresRe: Dirty30 Dillon Dirty30 Dillon 02/12/19 07:21AM
  Re: porting picts and success and failuresRe: Chöschi21 C.K. Chöschi21 C.K. 02/12/19 08:07AM
  Re: porting picts and success and failuresRe: EH 📣FCC of the QCB EH 📣FCC of the QCB 02/12/19 11:35AM
  Re: porting picts and success and failuresRe: Adam Smith Adam Smith 02/12/19 10:43AM
  Re: porting picts and success and failuresRe: Seth B Seth B 02/12/19 05:10PM
  Re: porting picts and success and failuresRe: EH 📣FCC of the QCB EH 📣FCC of the QCB 02/12/19 05:50PM

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