Expiremental OM617 build
Expiremental OM617 build
02-19-2018, 09:58 PM
#56
(11-19-2016, 04:15 PM)R-3350 i have been having an issue lately with excessive smoking at idle. i did a valve adjustment and re tested the injectors to make sure they were not dripping also changed the glow plugs and inspected the pre-chambers. while i had the plugs out and the injectors i noticed that #1 seemed slightly wet with oil this combined with some slight residual pressure in the coolant expansion tank after sitting for a day confirmed my thoughts of a failed head gasket. it has been smoking for a while and getting steadily worse so i finally decided to pull the head and swap in the new head thats been ported along with the new cam. while i was pulling the head bolts i noticed a few were wet with oil on the threads but dry by the shank two were also covered in soot.
you can see there where it failed the #3 and 4 also had similar failures just not as bad.
the pistons are pristine with no visible erosion or anything. the bores are great too ~.004" wear step with cross hatching still clearly visible. i still need to surface the ported head and have a three angle valve job done. i have been holding off of doing that work until right before i put it on so as to limit the possibility of damage in storage or transport. while i had the old head off i set it next to the new ported one to show the difference. its quite dramatic especially
im also considering swapping in a new compressor wheel in the HE221W.
dimensions are 189mm inducer and 258mm exducer. this plus some slightly larger valves should help it breathe.
but seriously i should have the new head on and running before too long. i already have the new gasket and bolts all i need to do is get the machine work done and spend a weekend working. ill be interested to see how much of a difference it will make in power without any fueling changes.
![[Image: IMG_20161117_170310_zpsuv0jecb4.jpg]](http://i346.photobucket.com/albums/p435/R-3350/IMG_20161117_170310_zpsuv0jecb4.jpg)
![[Image: IMG_20161118_135936_zpsh7cky3q6.jpg]](http://i346.photobucket.com/albums/p435/R-3350/IMG_20161118_135936_zpsh7cky3q6.jpg)
![[Image: IMG_20161118_140251_zpsb4apiluw.jpg]](http://i346.photobucket.com/albums/p435/R-3350/IMG_20161118_140251_zpsb4apiluw.jpg)
![[Image: IMG_20161119_131357_zps6r7klngn.jpg]](http://i346.photobucket.com/albums/p435/R-3350/IMG_20161119_131357_zps6r7klngn.jpg)
![[Image: IMG_20161119_134902_zpsz3envjov.jpg]](http://i346.photobucket.com/albums/p435/R-3350/IMG_20161119_134902_zpsz3envjov.jpg)
![[Image: IMG_20161119_135251_zpsmjzsfz0j.jpg]](http://i346.photobucket.com/albums/p435/R-3350/IMG_20161119_135251_zpsmjzsfz0j.jpg)
Yah mine failed between 4 and 5 and I had a head bolt so caked with soot it didnt want to come out. I had overheated it about 10 years before and it finally lost compression in
atypicalguy
02-19-2018, 09:58 PM #56(11-19-2016, 04:15 PM)R-3350 i have been having an issue lately with excessive smoking at idle. i did a valve adjustment and re tested the injectors to make sure they were not dripping also changed the glow plugs and inspected the pre-chambers. while i had the plugs out and the injectors i noticed that #1 seemed slightly wet with oil this combined with some slight residual pressure in the coolant expansion tank after sitting for a day confirmed my thoughts of a failed head gasket. it has been smoking for a while and getting steadily worse so i finally decided to pull the head and swap in the new head thats been ported along with the new cam. while i was pulling the head bolts i noticed a few were wet with oil on the threads but dry by the shank two were also covered in soot.
you can see there where it failed the #3 and 4 also had similar failures just not as bad.
the pistons are pristine with no visible erosion or anything. the bores are great too ~.004" wear step with cross hatching still clearly visible. i still need to surface the ported head and have a three angle valve job done. i have been holding off of doing that work until right before i put it on so as to limit the possibility of damage in storage or transport. while i had the old head off i set it next to the new ported one to show the difference. its quite dramatic especially
im also considering swapping in a new compressor wheel in the HE221W.
dimensions are 189mm inducer and 258mm exducer. this plus some slightly larger valves should help it breathe.
but seriously i should have the new head on and running before too long. i already have the new gasket and bolts all i need to do is get the machine work done and spend a weekend working. ill be interested to see how much of a difference it will make in power without any fueling changes.
Yah mine failed between 4 and 5 and I had a head bolt so caked with soot it didnt want to come out. I had overheated it about 10 years before and it finally lost compression in
Messages In This Thread
Expiremental OM617 build - by R-3350 - 07-26-2016, 06:34 PM
RE: Expiremental OM617 build - by R-3350 - 07-27-2016, 06:16 PM
RE: Expiremental OM617 build - by raysorenson - 07-27-2016, 07:24 PM
RE: Expiremental OM617 build - by R-3350 - 07-27-2016, 07:49 PM
RE: Expiremental OM617 build - by raysorenson - 07-28-2016, 07:41 AM
RE: Expiremental OM617 build - by raysorenson - 07-28-2016, 08:01 AM
RE: Expiremental OM617 build - by R-3350 - 07-28-2016, 12:38 PM
RE: Expiremental OM617 build - by MFSuper90 - 07-29-2016, 06:11 AM
RE: Expiremental OM617 build - by R-3350 - 07-29-2016, 12:16 PM
RE: Expiremental OM617 build - by MFSuper90 - 07-29-2016, 04:13 PM
RE: Expiremental OM617 build - by R-3350 - 07-29-2016, 04:35 PM
RE: Expiremental OM617 build - by R-3350 - 07-29-2016, 06:24 PM
RE: Expiremental OM617 build - by R-3350 - 08-17-2016, 03:58 PM
RE: Expiremental OM617 build - by R-3350 - 08-22-2016, 06:41 PM
RE: Expiremental OM617 build - by R-3350 - 09-30-2016, 11:24 PM
RE: Expiremental OM617 build - by CRD4x4 - 10-01-2016, 09:10 AM
RE: Expiremental OM617 build - by R-3350 - 10-01-2016, 10:18 AM
RE: Expiremental OM617 build - by NZScott - 10-01-2016, 03:20 PM
RE: Expiremental OM617 build - by R-3350 - 10-03-2016, 10:53 PM
RE: Expiremental OM617 build - by SurfRodder - 10-04-2016, 12:24 AM
RE: Expiremental OM617 build - by MFSuper90 - 10-09-2016, 07:51 AM
RE: Expiremental OM617 build - by R-3350 - 10-09-2016, 08:57 AM
RE: Expiremental OM617 build - by NZScott - 10-09-2016, 05:38 PM
RE: Expiremental OM617 build - by R-3350 - 10-09-2016, 06:43 PM
RE: Expiremental OM617 build - by NZScott - 10-10-2016, 01:45 AM
RE: Expiremental OM617 build - by atypicalguy - 10-12-2016, 04:14 AM
RE: Expiremental OM617 build - by atypicalguy - 10-12-2016, 04:32 AM
RE: Expiremental OM617 build - by R-3350 - 10-12-2016, 06:54 AM
RE: Expiremental OM617 build - by atypicalguy - 10-12-2016, 05:16 PM
RE: Expiremental OM617 build - by atypicalguy - 10-12-2016, 08:32 AM
RE: Expiremental OM617 build - by R-3350 - 10-12-2016, 07:42 PM
RE: Expiremental OM617 build - by atypicalguy - 10-15-2016, 09:56 AM
RE: Expiremental OM617 build - by R-3350 - 10-20-2016, 09:33 PM
RE: Expiremental OM617 build - by NZScott - 10-21-2016, 12:34 AM
RE: Expiremental OM617 build - by R-3350 - 11-19-2016, 04:15 PM
RE: Expiremental OM617 build - by atypicalguy - 02-19-2018, 09:58 PM
RE: Expiremental OM617 build - by TKMad - 11-21-2016, 04:11 PM
RE: Expiremental OM617 build - by NZScott - 11-21-2016, 09:05 PM
RE: Expiremental OM617 build - by R-3350 - 11-21-2016, 09:30 PM
RE: Expiremental OM617 build - by NZScott - 11-22-2016, 01:07 AM
RE: Expiremental OM617 build - by MFSuper90 - 11-24-2016, 10:35 AM
RE: Expiremental OM617 build - by R-3350 - 11-24-2016, 12:01 PM
RE: Expiremental OM617 build - by Evenglass - 12-18-2016, 11:01 PM
RE: Expiremental OM617 build - by R-3350 - 12-19-2016, 10:29 PM
RE: Expiremental OM617 build - by DiseaselWeasel - 12-26-2016, 04:09 AM
RE: Expiremental OM617 build - by R-3350 - 06-08-2017, 10:46 PM
RE: Expiremental OM617 build - by R-3350 - 06-09-2017, 10:51 PM
RE: Expiremental OM617 build - by R-3350 - 10-27-2017, 07:59 AM
RE: Expiremental OM617 build - by atypicalguy - 10-29-2017, 08:54 PM
RE: Expiremental OM617 build - by atypicalguy - 11-16-2017, 09:43 PM
RE: Expiremental OM617 build - by R-3350 - 11-16-2017, 11:17 PM
RE: Expiremental OM617 build - by atypicalguy - 11-19-2017, 12:52 AM
RE: Expiremental OM617 build - by R-3350 - 11-19-2017, 02:59 AM
RE: Expiremental OM617 build - by atypicalguy - 11-21-2017, 09:25 PM
RE: Expiremental OM617 build - by MFSuper90 - 12-17-2017, 11:09 PM
RE: Expiremental OM617 build - by atypicalguy - 12-26-2017, 02:41 PM
RE: Expiremental OM617 build - by R-3350 - 02-19-2018, 10:43 PM
RE: Expiremental OM617 build - by R-3350 - 03-07-2018, 01:36 AM
RE: Expiremental OM617 build - by atypicalguy - 03-10-2018, 07:10 PM
RE: Expiremental OM617 build - by R-3350 - 03-11-2018, 12:53 AM
RE: Expiremental OM617 build - by atypicalguy - 03-13-2018, 06:37 AM
RE: Expiremental OM617 build - by R-3350 - 03-14-2018, 07:58 PM
RE: Expiremental OM617 build - by R-3350 - 01-10-2019, 12:43 PM
RE: Expiremental OM617 build - by NZScott - 01-10-2019, 03:05 PM
RE: Expiremental OM617 build - by atypicalguy - 03-02-2019, 07:31 AM
RE: Expiremental OM617 build - by NZScott - 03-02-2019, 03:41 PM
RE: Expiremental OM617 build - by R-3350 - 03-02-2019, 05:16 PM
RE: Expiremental OM617 build - by atypicalguy - 03-02-2019, 08:50 PM
RE: Expiremental OM617 build - by R-3350 - 03-02-2019, 10:46 PM
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