prechambers mods?
prechambers mods?
02-19-2018, 08:52 PM
#134
At 8% overage and than tapering outside of flame tube exit holes a 3 degree advance was needed .Started at 26 now 29.
At 8% no taper. opening flame tube to 10mm a loss of performance, 3 degrees advance was also needed. 29
At 8% tapering only inside of flame tube from approx.10mm down to 8mm a decrease in timing was needed,back to 26.
Now , tapering both inside and tip exit holes a increase in timing was again needed to 29.
Tapering the inside of flame tube and leaving tip exit holes to 8% netted the most gain,smoothest run.
Should be noted that if more oxygen is available,lower altitude,holes can be increased to approx. 10% without increasing timing,for a bit
more performance again leaving tip exit not tapered.
Tapering bottom and rear tip exit holes,no different timing was needed and engine seemed smoother and more balanced,a bit quicker rpm.
Hope this did not confuse even more.
Think I might have wore out the head taking these in and out soooo many times. lol. 11-12 sets history.
Modifying the prechamber,flame tube exit holes beyond 8% at 7,000 ft. netted a loss of high rpm performance.
At 8% overage and than tapering outside of flame tube exit holes a 3 degree advance was needed .Started at 26 now 29.
At 8% no taper. opening flame tube to 10mm a loss of performance, 3 degrees advance was also needed. 29
At 8% tapering only inside of flame tube from approx.10mm down to 8mm a decrease in timing was needed,back to 26.
Now , tapering both inside and tip exit holes a increase in timing was again needed to 29.
Tapering the inside of flame tube and leaving tip exit holes to 8% netted the most gain,smoothest run.
Should be noted that if more oxygen is available,lower altitude,holes can be increased to approx. 10% without increasing timing,for a bit
more performance again leaving tip exit not tapered.
Tapering bottom and rear tip exit holes,no different timing was needed and engine seemed smoother and more balanced,a bit quicker rpm.
Hope this did not confuse even more.
Think I might have wore out the head taking these in and out soooo many times. lol. 11-12 sets history.
Messages In This Thread
prechambers mods? - by Tito - 06-01-2014, 04:05 PM
RE: prechambers mods? - by raysorenson - 06-01-2014, 06:37 PM
RE: prechambers mods? - by MFSuper90 - 06-01-2014, 07:30 PM
RE: prechambers mods? - by led-panzer - 06-01-2014, 08:16 PM
RE: prechambers mods? - by MFSuper90 - 06-03-2014, 02:28 PM
RE: prechambers mods? - by led-panzer - 06-03-2014, 08:30 PM
RE: prechambers mods? - by Tito - 06-02-2014, 05:53 AM
RE: prechambers mods? - by Simpler=Better - 06-02-2014, 07:14 AM
RE: prechambers mods? - by raysorenson - 06-02-2014, 08:51 PM
RE: prechambers mods? - by Tito - 06-03-2014, 03:49 PM
RE: prechambers mods? - by MFSuper90 - 06-03-2014, 09:35 PM
RE: prechambers mods? - by sassparilla_kid - 06-03-2014, 10:22 PM
RE: prechambers mods? - by Captain America - 06-03-2014, 10:52 PM
RE: prechambers mods? - by baldur - 06-04-2014, 05:44 AM
RE: prechambers mods? - by Simpler=Better - 06-04-2014, 08:56 AM
RE: prechambers mods? - by sassparilla_kid - 06-04-2014, 09:41 AM
RE: prechambers mods? - by Simpler=Better - 06-04-2014, 11:15 AM
RE: prechambers mods? - by MFSuper90 - 06-04-2014, 03:45 PM
RE: prechambers mods? - by Simpler=Better - 06-05-2014, 07:38 AM
RE: prechambers mods? - by sassparilla_kid - 06-05-2014, 09:07 AM
RE: prechambers mods? - by MFSuper90 - 06-05-2014, 09:23 AM
RE: prechambers mods? - by Duncansport - 06-05-2014, 09:29 AM
RE: prechambers mods? - by MFSuper90 - 06-05-2014, 09:32 AM
RE: prechambers mods? - by Simpler=Better - 06-05-2014, 11:17 AM
RE: prechambers mods? - by OM616 - 06-05-2014, 12:05 PM
RE: prechambers mods? - by Captain America - 06-06-2014, 11:15 PM
RE: prechambers mods? - by sassparilla_kid - 06-05-2014, 02:40 PM
RE: prechambers mods? - by barrote - 06-08-2014, 01:19 PM
RE: prechambers mods? - by Tito - 06-09-2014, 02:33 AM
RE: prechambers mods? - by Tito - 12-06-2014, 07:34 AM
RE: prechambers mods? - by hooblah - 12-06-2014, 12:47 PM
RE: prechambers mods? - by Tito - 12-06-2014, 12:57 PM
RE: prechambers mods? - by EDH_Performance - 12-06-2014, 07:14 PM
RE: prechambers mods? - by barrote - 12-08-2014, 02:14 PM
RE: prechambers mods? - by hooblah - 12-08-2014, 05:13 PM
RE: prechambers mods? - by barrote - 12-09-2014, 09:16 AM
RE: prechambers mods? - by swatmugga - 12-08-2014, 05:59 PM
RE: prechambers mods? - by Tito - 12-09-2014, 03:06 PM
RE: prechambers mods? - by EDH_Performance - 12-08-2014, 07:24 PM
RE: prechambers mods? - by barrote - 12-09-2014, 04:15 PM
RE: prechambers mods? - by Hercules - 12-10-2014, 06:42 PM
RE: prechambers mods? - by Simpler=Better - 12-10-2014, 10:12 PM
RE: prechambers mods? - by Tito - 12-11-2014, 09:22 AM
RE: prechambers mods? - by sassparilla_kid - 12-11-2014, 08:18 PM
RE: prechambers mods? - by raidaru - 12-12-2014, 04:43 AM
RE: prechambers mods? - by Tito - 12-12-2014, 06:57 AM
RE: prechambers mods? - by DiseaselWeasel - 12-12-2014, 10:50 AM
RE: prechambers mods? - by Duncansport - 12-12-2014, 11:26 AM
RE: prechambers mods? - by barrote - 12-12-2014, 03:32 PM
RE: prechambers mods? - by Tito - 12-13-2014, 11:46 AM
RE: prechambers mods? - by barrote - 12-13-2014, 02:37 PM
RE: prechambers mods? - by OM616 - 12-13-2014, 12:28 PM
RE: prechambers mods? - by Petar - 12-13-2014, 03:58 PM
RE: prechambers mods? - by DiseaselWeasel - 12-13-2014, 05:14 PM
RE: prechambers mods? - by starynovy - 12-14-2014, 05:45 AM
RE: prechambers mods? - by Tito - 12-14-2014, 04:43 AM
RE: prechambers mods? - by DiseaselWeasel - 12-14-2014, 07:21 AM
RE: prechambers mods? - by Petar - 12-15-2014, 04:19 AM
RE: prechambers mods? - by barrote - 12-15-2014, 02:34 PM
RE: prechambers mods? - by CRD4x4 - 12-28-2014, 06:17 PM
RE: prechambers mods? - by barrote - 12-30-2014, 05:14 PM
RE: prechambers mods? - by sassparilla_kid - 12-14-2014, 10:40 PM
RE: prechambers mods? - by MFSuper90 - 12-14-2014, 10:59 PM
RE: prechambers mods? - by MTUPower - 12-27-2014, 10:19 PM
RE: prechambers mods? - by Tito - 12-28-2014, 04:43 AM
RE: prechambers mods? - by MTUPower - 01-10-2015, 12:10 AM
RE: prechambers mods? - by MTUPower - 01-12-2015, 01:55 PM
RE: prechambers mods? - by sassparilla_kid - 01-13-2015, 12:09 PM
RE: prechambers mods? - by MTUPower - 01-14-2015, 09:02 AM
RE: prechambers mods? - by MTUPower - 01-14-2015, 06:11 PM
RE: prechambers mods? - by Eric78 - 01-15-2015, 04:21 AM
RE: prechambers mods? - by MTUPower - 01-15-2015, 09:55 AM
RE: prechambers mods? - by Eric78 - 01-16-2015, 07:09 AM
RE: prechambers mods? - by MTUPower - 01-16-2015, 09:24 AM
RE: prechambers mods? - by raysorenson - 01-16-2015, 09:43 AM
RE: prechambers mods? - by barrote - 01-16-2015, 03:22 PM
RE: prechambers mods? - by raidaru - 01-23-2015, 06:12 AM
RE: prechambers mods? - by MTUPower - 01-24-2015, 09:45 AM
RE: prechambers mods? - by led-panzer - 02-02-2015, 12:31 PM
RE: prechambers mods? - by MTUPower - 02-02-2015, 08:04 PM
RE: prechambers mods? - by Sleek~silver602 - 02-02-2015, 08:34 PM
RE: prechambers mods? - by MTUPower - 02-03-2015, 09:44 AM
RE: prechambers mods? - by MTUPower - 02-06-2015, 11:48 PM
RE: prechambers mods? - by led-panzer - 02-07-2015, 09:36 PM
RE: prechambers mods? - by MTUPower - 02-07-2015, 11:44 PM
RE: prechambers mods? - by OM616 - 02-07-2015, 11:57 AM
RE: prechambers mods? - by MTUPower - 02-07-2015, 05:58 PM
RE: prechambers mods? - by raidaru - 02-08-2015, 01:30 PM
RE: prechambers mods? - by DiseaselWeasel - 02-08-2015, 05:25 AM
RE: prechambers mods? - by led-panzer - 02-08-2015, 08:26 AM
RE: prechambers mods? - by MTUPower - 02-08-2015, 09:15 AM
RE: prechambers mods? - by barrote - 02-08-2015, 09:55 AM
RE: prechambers mods? - by MTUPower - 02-08-2015, 07:34 PM
RE: prechambers mods? - by led-panzer - 02-08-2015, 11:08 AM
RE: prechambers mods? - by MTUPower - 02-09-2015, 09:41 PM
RE: prechambers mods? - by MTUPower - 02-10-2015, 05:57 PM
RE: prechambers mods? - by turbojeep - 02-10-2015, 09:26 PM
RE: prechambers mods? - by MTUPower - 02-10-2015, 10:01 PM
RE: prechambers mods? - by barrote - 02-16-2015, 03:12 PM
RE: prechambers mods? - by MTUPower - 02-16-2015, 06:23 PM
RE: prechambers mods? - by barrote - 02-17-2015, 08:06 AM
RE: prechambers mods? - by OM616 - 02-17-2015, 12:35 PM
RE: prechambers mods? - by Captain America - 02-24-2015, 01:35 AM
RE: prechambers mods? - by OM616 - 02-24-2015, 12:34 PM
RE: prechambers mods? - by Captain America - 02-25-2015, 10:07 PM
RE: prechambers mods? - by barrote - 02-17-2015, 02:59 PM
RE: prechambers mods? - by OM616 - 02-17-2015, 06:51 PM
RE: prechambers mods? - by barrote - 02-18-2015, 05:09 AM
RE: prechambers mods? - by barrote - 02-23-2015, 06:27 AM
RE: prechambers mods? - by baldur - 02-24-2015, 06:47 AM
RE: prechambers mods? - by raysorenson - 02-24-2015, 09:13 AM
RE: prechambers mods? - by barrote - 02-24-2015, 04:38 PM
RE: prechambers mods? - by barrote - 02-25-2015, 03:10 PM
RE: prechambers mods? - by raysorenson - 02-25-2015, 07:11 PM
RE: prechambers mods? - by NZScott - 02-26-2015, 02:21 AM
RE: prechambers mods? - by barrote - 02-26-2015, 02:29 PM
RE: prechambers mods? - by OM616 - 02-26-2015, 06:11 PM
RE: prechambers mods? - by NZScott - 02-26-2015, 10:38 PM
RE: prechambers mods? - by OM616 - 02-27-2015, 11:54 AM
RE: prechambers mods? - by barrote - 02-27-2015, 05:37 AM
RE: prechambers mods? - by raysorenson - 02-27-2015, 12:39 PM
RE: prechambers mods? - by Greazzer - 02-27-2015, 01:29 PM
RE: prechambers mods? - by sassparilla_kid - 03-02-2015, 03:11 AM
RE: prechambers mods? - by MFSuper90 - 03-02-2015, 09:58 AM
RE: prechambers mods? - by barrote - 03-21-2015, 09:27 AM
RE: prechambers mods? - by PanicButton - 08-15-2015, 04:48 AM
RE: prechambers mods? - by raysorenson - 08-15-2015, 10:05 PM
RE: prechambers mods? - by MFSuper90 - 08-16-2015, 01:38 AM
RE: prechambers mods? - by MTUPower - 02-18-2018, 11:27 PM
RE: prechambers mods? - by Hercules - 02-19-2018, 06:51 AM
RE: prechambers mods? - by OM616 - 02-19-2018, 12:54 PM
RE: prechambers mods? - by Hercules - 02-19-2018, 04:32 PM
RE: prechambers mods? - by OM616 - 02-19-2018, 07:13 PM
RE: prechambers mods? - by Hercules - 02-19-2018, 08:52 PM
RE: prechambers mods? - by Hercules - 02-19-2018, 09:41 PM
RE: prechambers mods? - by OM616 - 02-20-2018, 01:42 AM
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