W124 build
W124 build
04-24-2018, 06:53 PM
#101
Pump timing atdc doesn’t make any sense to me. In a perfect scenario you would inject at tdc, but you have to account for the time it takes to inject the fuel, and there are a lot of variables there.
On some of our high performance tractor pulling engines timing varies between 20-50 btdc. The more rpm, the more timing it needs. But the bigger the pump, the faster the injection rate, therefore not as much timing is needed. Stock spec is normally around 12-15btdc. The one I’m currently messing with will use a 13mm p-pump capable of 1100cc. It will be dialed back to around 500cc probably. I am going to start at 32* of timing, and probably go up from there if need be. This is all direct injection engines, but basic concepts still apply
'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted
Hate to hear that it lost a PC. You should hop over on competition diesel sometime. Lots of high performance diesel knowledge there.
Pump timing atdc doesn’t make any sense to me. In a perfect scenario you would inject at tdc, but you have to account for the time it takes to inject the fuel, and there are a lot of variables there.
On some of our high performance tractor pulling engines timing varies between 20-50 btdc. The more rpm, the more timing it needs. But the bigger the pump, the faster the injection rate, therefore not as much timing is needed. Stock spec is normally around 12-15btdc. The one I’m currently messing with will use a 13mm p-pump capable of 1100cc. It will be dialed back to around 500cc probably. I am going to start at 32* of timing, and probably go up from there if need be. This is all direct injection engines, but basic concepts still apply
'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted
Messages In This Thread
W124 build - by whipplem104 - 04-30-2015, 06:38 PM
RE: W124 build - by raysorenson - 04-30-2015, 08:27 PM
RE: W124 build - by Repetitio - 05-01-2015, 02:19 AM
RE: W124 build - by whipplem104 - 05-01-2015, 10:35 AM
RE: W124 build - by whipplem104 - 05-04-2015, 06:03 PM
RE: W124 build - by whipplem104 - 05-06-2015, 08:10 PM
RE: W124 build - by maxypriest - 05-06-2015, 09:46 PM
RE: W124 build - by whipplem104 - 05-06-2015, 11:31 PM
RE: W124 build - by whipplem104 - 05-07-2015, 01:46 PM
RE: W124 build - by raysorenson - 05-07-2015, 08:16 PM
RE: W124 build - by whipplem104 - 05-08-2015, 02:02 PM
RE: W124 build - by whipplem104 - 05-25-2015, 11:00 PM
RE: W124 build - by Hario' - 05-26-2015, 07:33 AM
RE: W124 build - by whipplem104 - 06-19-2015, 06:33 PM
RE: W124 build - by Turbo - 06-22-2015, 01:13 AM
RE: W124 build - by whipplem104 - 06-30-2015, 06:43 PM
RE: W124 build - by whipplem104 - 07-01-2015, 08:09 AM
RE: W124 build - by Hario' - 07-01-2015, 11:41 AM
RE: W124 build - by whipplem104 - 07-02-2015, 07:25 PM
RE: W124 build - by whipplem104 - 07-02-2015, 07:38 PM
RE: W124 build - by raysorenson - 07-03-2015, 09:10 PM
RE: W124 build - by whipplem104 - 07-04-2015, 06:15 AM
RE: W124 build - by whipplem104 - 07-22-2015, 03:36 PM
RE: W124 build - by Booster - 07-23-2015, 01:50 AM
RE: W124 build - by whipplem104 - 07-23-2015, 06:32 PM
RE: W124 build - by whipplem104 - 07-28-2015, 02:52 PM
RE: W124 build - by Turbo - 08-11-2015, 02:35 PM
RE: W124 build - by whipplem104 - 08-11-2015, 05:31 PM
RE: W124 build - by whipplem104 - 08-27-2015, 12:43 PM
RE: W124 build - by whipplem104 - 10-03-2015, 02:02 PM
RE: W124 build - by whipplem104 - 10-04-2015, 06:08 PM
RE: W124 build - by whipplem104 - 10-05-2015, 09:22 PM
RE: W124 build - by erx - 10-15-2015, 10:42 AM
RE: W124 build - by whipplem104 - 10-16-2015, 11:52 AM
RE: W124 build - by whipplem104 - 12-11-2015, 07:59 PM
RE: W124 build - by whipplem104 - 02-04-2016, 05:12 PM
RE: W124 build - by atypicalguy - 02-12-2016, 07:11 PM
RE: W124 build - by whipplem104 - 02-15-2016, 11:42 AM
RE: W124 build - by whipplem104 - 02-19-2016, 11:50 AM
RE: W124 build - by Sultzi - 02-19-2016, 02:04 PM
RE: W124 build - by whipplem104 - 02-19-2016, 04:17 PM
RE: W124 build - by whipplem104 - 02-19-2016, 07:44 PM
RE: W124 build - by whipplem104 - 02-21-2016, 12:16 PM
RE: W124 build - by whipplem104 - 02-23-2016, 02:58 PM
RE: W124 build - by whipplem104 - 03-03-2016, 05:12 PM
RE: W124 build - by whipplem104 - 03-11-2016, 02:07 PM
RE: W124 build - by whipplem104 - 03-18-2016, 11:25 AM
RE: W124 build - by atypicalguy - 03-22-2016, 04:44 AM
RE: W124 build - by whipplem104 - 03-22-2016, 11:16 AM
RE: W124 build - by atypicalguy - 03-24-2016, 05:30 AM
RE: W124 build - by whipplem104 - 03-24-2016, 10:24 AM
RE: W124 build - by whipplem104 - 03-24-2016, 02:36 PM
RE: W124 build - by SurfRodder - 03-24-2016, 03:21 PM
RE: W124 build - by whipplem104 - 03-24-2016, 03:58 PM
RE: W124 build - by atypicalguy - 03-24-2016, 11:22 PM
RE: W124 build - by whipplem104 - 03-25-2016, 08:12 AM
RE: W124 build - by atypicalguy - 03-25-2016, 03:47 PM
RE: W124 build - by whipplem104 - 03-25-2016, 04:10 PM
RE: W124 build - by atypicalguy - 03-25-2016, 04:27 PM
RE: W124 build - by whipplem104 - 04-10-2016, 12:54 PM
RE: W124 build - by erx - 04-11-2016, 01:47 AM
RE: W124 build - by whipplem104 - 04-11-2016, 07:57 AM
RE: W124 build - by erx - 04-11-2016, 09:12 AM
RE: W124 build - by whipplem104 - 04-11-2016, 12:45 PM
RE: W124 build - by erx - 04-11-2016, 01:19 PM
RE: W124 build - by whipplem104 - 04-11-2016, 01:35 PM
RE: W124 build - by Sultzi - 04-12-2016, 03:28 AM
RE: W124 build - by whipplem104 - 05-27-2016, 08:29 AM
RE: W124 build - by erx - 06-14-2016, 02:19 PM
RE: W124 build - by whipplem104 - 06-14-2016, 03:17 PM
RE: W124 build - by whipplem104 - 07-06-2016, 03:47 PM
RE: W124 build - by whipplem104 - 11-13-2016, 10:55 AM
RE: W124 build - by atypicalguy - 11-13-2016, 01:30 PM
RE: W124 build - by whipplem104 - 11-13-2016, 02:24 PM
RE: W124 build - by erx - 11-13-2016, 03:26 PM
RE: W124 build - by whipplem104 - 11-15-2016, 02:14 PM
RE: W124 build - by erx - 11-15-2016, 02:51 PM
RE: W124 build - by whipplem104 - 11-15-2016, 04:50 PM
RE: W124 build - by erx - 11-15-2016, 05:31 PM
RE: W124 build - by R-3350 - 11-15-2016, 07:58 PM
RE: W124 build - by atypicalguy - 11-15-2016, 10:33 PM
RE: W124 build - by whipplem104 - 11-16-2016, 04:56 PM
RE: W124 build - by erx - 11-17-2016, 04:11 AM
RE: W124 build - by atypicalguy - 11-17-2016, 08:53 PM
RE: W124 build - by atypicalguy - 11-17-2016, 09:03 PM
RE: W124 build - by Mr_Robs - 12-25-2016, 08:01 PM
RE: W124 build - by whipplem104 - 12-26-2016, 12:38 PM
RE: W124 build - by atypicalguy - 03-24-2017, 03:29 AM
RE: W124 build - by whipplem104 - 03-24-2017, 08:13 AM
RE: W124 build - by atypicalguy - 03-24-2017, 09:51 AM
RE: W124 build - by whipplem104 - 03-24-2017, 07:12 PM
RE: W124 build - by whipplem104 - 04-28-2017, 08:01 AM
RE: W124 build - by Turbo - 04-29-2017, 01:04 AM
RE: W124 build - by whipplem104 - 04-30-2017, 01:44 PM
RE: W124 build - by whipplem104 - 09-24-2017, 12:52 PM
RE: W124 build - by maxypriest - 09-25-2017, 09:00 AM
RE: W124 build - by whipplem104 - 09-25-2017, 12:09 PM
RE: W124 build - by atypicalguy - 11-20-2017, 10:14 PM
RE: W124 build - by whipplem104 - 11-20-2017, 11:31 PM
RE: W124 build - by whipplem104 - 04-24-2018, 01:21 PM
RE: W124 build - by atypicalguy - 05-15-2018, 01:23 AM
RE: W124 build - by MFSuper90 - 04-24-2018, 06:53 PM
RE: W124 build - by atypicalguy - 10-07-2018, 09:27 PM
RE: W124 build - by whipplem104 - 10-09-2018, 10:24 PM
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