W124 build
W124 build
04-11-2016, 09:12 AM
#63
(04-11-2016, 07:57 AM)whipplem104 That is a hard question in a way. Really at any point you are going above stock you should. It also really depends on your exhaust back pressure and RPMs. Exhaust valves do not have cylinder pressure equalizing on the other side so it probably is a psi to psi relationship on the seat. I would really be worried at anything above 20-25 psi.
Last year I made 510hp with HX40 and 3bar/45psi with stock engine, I ran it to 6500rpm on dyno and no problems so far. Donor car had 470k km/ 290k miles and engine is never opened, 500hp is max from HX40 so I go with HX52 this year, we'll see how it goes.
(04-11-2016, 07:57 AM)whipplem104 That is a hard question in a way. Really at any point you are going above stock you should. It also really depends on your exhaust back pressure and RPMs. Exhaust valves do not have cylinder pressure equalizing on the other side so it probably is a psi to psi relationship on the seat. I would really be worried at anything above 20-25 psi.
Last year I made 510hp with HX40 and 3bar/45psi with stock engine, I ran it to 6500rpm on dyno and no problems so far. Donor car had 470k km/ 290k miles and engine is never opened, 500hp is max from HX40 so I go with HX52 this year, we'll see how it goes.
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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