Re: rod length vs port timing

Graham Motzing /
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four mm shouldn't change it too much, its just simple geometry and the hypotenuse changing 4mm wont really alter the major leg much. probably 2 mm at most. What is the current stroke? Did you port for the longer stroke, or leave stock porting? Is the piston coming to the bottom of the ex port now, as in, did you calculate all that spacer-stroke-rod mumbojumbo correctly?

i'd be looking at something else if it were me.. reeds? 'speed holes'? ... hmmm

at this point, make your own crank, do a little heat treating or case hardening with some mild steel and call it a day, or get radical with tool steel.... or, or, or

i still dont see how you used that cylinder with 50mm stroke and didn't modify exhaust... wouldn't you have to lower exhaust port to make it even with the piston at BDC.. i mean, ideally at least?

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  rod length vs port timingTopic by: clay clay 01/20/10 05:11PM
  Re: rod length vs port timingRe: clay clay 01/20/10 05:20PM
  Re: rod length vs port timingRe: Flagrant - Flagrant - 01/20/10 05:38PM
  Re: rod length vs port timingRe: clay clay 01/20/10 06:10PM
  Re: rod length vs port timingRe: Flagrant - Flagrant - 01/20/10 06:37PM
  Re: rod length vs port timingRe: Graham Motzing Graham Motzing 01/20/10 10:22PM
  Re: rod length vs port timingRe: clay clay 01/21/10 01:01AM
  Re: rod length vs port timingRe: mattology - mattology - 01/21/10 01:14AM
  Re: rod length vs port timingRe: clay clay 01/21/10 12:03PM
  Re: rod length vs port timingRe: mattology - mattology - 01/21/10 01:13PM
  Re: rod length vs port timingRe: clay clay 01/21/10 03:27PM
  Re: rod length vs port timingRe: Flagrant - Flagrant - 01/21/10 03:38PM
  Re: rod length vs port timingRe: clay clay 01/21/10 04:19PM
  Re: rod length vs port timingRe: Flagrant - Flagrant - 01/21/10 05:21PM
  Re: rod length vs port timingRe: Flagrant - Flagrant - 01/21/10 05:26PM
  Re: rod length vs port timingRe: clay clay 01/21/10 06:10PM
  Re: rod length vs port timingRe: clay clay 01/21/10 07:52PM
  Re: rod length vs port timingRe: mattology - mattology - 01/21/10 08:08PM
  Re: rod length vs port timingRe: clay clay 01/21/10 08:20PM
  Re: rod length vs port timingRe: clay clay 01/21/10 08:46PM
  Re: rod length vs port timingRe: clay clay 01/21/10 09:18PM
  Re: rod length vs port timingRe: clay clay 02/05/10 12:57AM
  Re: rod length vs port timingRe: mattology - mattology - 02/05/10 01:15AM
  Re: rod length vs port timingRe: mattology - mattology - 02/05/10 01:17AM
  Re: rod length vs port timingRe: clay clay 02/05/10 09:40AM
  Re: rod length vs port timingRe: macelius-san macelius-san 02/05/10 07:45PM
  Re: rod length vs port timingRe: clay clay 02/06/10 11:21AM
  Re: rod length vs port timingRe: clay clay 02/07/10 01:02AM
  Re: rod length vs port timingRe: mattology - mattology - 02/07/10 01:05AM
  Re: rod length vs port timingRe: clay clay 02/07/10 01:12AM
  Re: rod length vs port timingRe: clay clay 02/07/10 01:14AM
  Re: rod length vs port timingRe: mattology - mattology - 02/07/10 05:58AM
  Re: rod length vs port timingRe: clay clay 02/07/10 09:51AM

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