Re: rod length vs port timing

mattology - /

144 is HUGE on the side transfers! If that's for the side transfers you probably are blowing all your charge out the exhaust! For comparison my polini is ported right now to

180 exhaust port

138 boost ports

116 side transfers

It has no problems hitting 11k witha shitty pipe, i'm going for 12-13k with a good pipe this year.

You might need to increase crankcase volume with that much transfer duration in order to reduce crank pressure and prevent short circuiting out the exhaust.

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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