User Tag List

Page 5 of 7 FirstFirst 1 2 3 4 5 6 7 LastLast
Results 61 to 75 of 99
  1. #61
    Join Date
    May 2018
    Location
    Auburn NY
    Posts
    40
    Thanks (Given)
    6
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sorry, was 35 psi ( gauge pegged) at WTO, at idle or just off 5-10 psi, and 2000 rpm about 20 psi

  2. #62
    Join Date
    Nov 2016
    Location
    Missouri
    Posts
    367
    Thanks (Given)
    11
    Thanks (Received)
    18
    Likes (Given)
    80
    Likes (Received)
    43
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bullet123 View Post
    I'm not sure if it would create enough pressure to open poppet. I just reread this entire post. In post #1 you said you had 35 psi @3000 rpms and in post#13 you had 20 psi @2000-3000 rpms. Two totally different situations. Ideally you want 20-30 at WOT and 5-8 at idle. If you have a good psi gauge and your poppet is working properly, you should see pressure drop at around 2000 rpms when poppet opens (if my memory serves me right). Have you pulled poppet and made sure all parts are there?
    This is why i asked him if he pulled the poppet valve out and put the housing back on the block and then try flushing to see if there was water coming out where it should be.

  3. Thanks Dayton12 thanked for this post
  4. #63
    Join Date
    May 2018
    Location
    Auburn NY
    Posts
    40
    Thanks (Given)
    6
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just to confirm, and as stated in long test list, when poppet is out and flushed either back or through the water inlet lots water out of the poppet hole. With poppet valve in place, cover on, and full garden hose water pressure through the water inlet pipe, the poppet valve did not open.

  5. #64
    Join Date
    Apr 2017
    Location
    pa
    Posts
    762
    Thanks (Given)
    13
    Thanks (Received)
    56
    Likes (Given)
    50
    Likes (Received)
    116
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Pressure that high points to restriction as stated earlier. Since you have flushed everything and you think poppet is working proper. Take it for a test drive. If you still have high pressure and overheat problem, then you need to find the restriction. Could be blockage in plates under powerhead or in the block itself. You said poppet and waterpump looked newer. Maybe previous owner replaced those parts in hopes it would fix problem and decided to throw in the towel.

  6. Likes pjbrownva liked this post
  7. #65
    Join Date
    Jul 2012
    Location
    Huntington, Texas
    Posts
    2,601
    Thanks (Given)
    283
    Thanks (Received)
    252
    Likes (Given)
    1739
    Likes (Received)
    1162
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bullet123 View Post
    You said poppet and waterpump looked newer. Maybe previous owner replaced those parts in hopes it would fix problem and decided to throw in the towel.


    Iím thinking itís not something simple.
    Josh Peterson

  8. #66
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    8,383
    Thanks (Given)
    256
    Thanks (Received)
    361
    Likes (Given)
    1510
    Likes (Received)
    2225
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    If you look at my first post you will see that is more or less my thinking also. Adapters plug and when they do you get ridiculous pressure and very hot very quick at wot. I suggested as a last resort since everything else is easy and quick to do. Fixing plate is fairly easy just a bit time consuming and will require a couple gaskets. Hopefully it don't get hot now so removal of the powerhead not necessary.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  9. Likes nitro_rat liked this post
  10. #67
    Join Date
    May 2018
    Location
    Auburn NY
    Posts
    40
    Thanks (Given)
    6
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Ok, spoke to bullet (thanks) thinks W pump might be incorrect. After looking and more research, my serial number off the welsh plug shows it is XR6 (i have to add a zero in front of B otherwise search shows nothing), seems same as black max but merc cruiser parts diagram shows my water pump without the seal that slides down the driveshaft and sits on the top of the waterpump.

  11. #68
    Join Date
    Apr 2017
    Location
    pa
    Posts
    762
    Thanks (Given)
    13
    Thanks (Received)
    56
    Likes (Given)
    50
    Likes (Received)
    116
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    #36 in the diagram for your motorClick image for larger version. 

Name:	water pump.gif 
Views:	31 
Size:	26.9 KB 
ID:	408951

  12. #69
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    8,383
    Thanks (Given)
    256
    Thanks (Received)
    361
    Likes (Given)
    1510
    Likes (Received)
    2225
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    If you have one or are in a position to get one I would love to see a picture of this powerhead.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  13. Likes nitro_rat liked this post
  14. #70
    Join Date
    Jan 2002
    Location
    new york babylon
    Posts
    2,131
    Thanks (Given)
    1
    Thanks (Received)
    9
    Likes (Given)
    5
    Likes (Received)
    38
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had one that had massive wip but ran real Hot ,it was a pwrhd. I found ,the block. Head surface was not flat between cylinders and the compression was going into water jacket !!! That had me going for a few days,but not as bad as the flywheel that caused massive misfire after I changed every ING piece, then swapped wheel easy fix

  15. #71
    Join Date
    May 2018
    Location
    Auburn NY
    Posts
    40
    Thanks (Given)
    6
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    here is the powerheadClick image for larger version. 

Name:	154_0495.jpg 
Views:	54 
Size:	418.1 KB 
ID:	408990Click image for larger version. 

Name:	154_0497.jpg 
Views:	48 
Size:	429.3 KB 
ID:	408991Click image for larger version. 

Name:	154_0500.jpg 
Views:	38 
Size:	409.5 KB 
ID:	408992Click image for larger version. 

Name:	154_0498.jpg 
Views:	50 
Size:	433.2 KB 
ID:	408993Click image for larger version. 

Name:	154_0499.jpg 
Views:	43 
Size:	426.0 KB 
ID:	408994
    Last edited by Dayton12; 05-31-2018 at 08:52 PM. Reason: picture

  16. #72
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    8,383
    Thanks (Given)
    256
    Thanks (Received)
    361
    Likes (Given)
    1510
    Likes (Received)
    2225
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    It's not an xr6. Looks like head marked 3 3/8. is this correct.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  17. #73
    Join Date
    Jul 2012
    Location
    Huntington, Texas
    Posts
    2,601
    Thanks (Given)
    283
    Thanks (Received)
    252
    Likes (Given)
    1739
    Likes (Received)
    1162
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by rock View Post
    It's not an xr6. Looks like head marked 3 3/8. is this correct.
    I can’t read the mark on the head on my phone but it looks like a 2.4 175 to me.
    Josh Peterson

  18. #74
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    8,383
    Thanks (Given)
    256
    Thanks (Received)
    361
    Likes (Given)
    1510
    Likes (Received)
    2225
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    My guess also. Definitely not an xr6.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  19. #75
    Join Date
    Sep 2017
    Location
    Ashland city tn
    Posts
    4,358
    Thanks (Given)
    201
    Thanks (Received)
    318
    Likes (Given)
    954
    Likes (Received)
    921
    Mentioned
    4 Post(s)
    Tagged
    1 Thread(s)
    Looks like 3 3/8 under Dia on head. Looks like 2.0 to me

Page 5 of 7 FirstFirst 1 2 3 4 5 6 7 LastLast

Similar Threads

  1. 1985 Mercury 150 Black Max overheating
    By jdewaard in forum Technical Discussion
    Replies: 79
    Last Post: 05-23-2015, 09:44 PM
  2. Replies: 2
    Last Post: 08-15-2014, 07:18 AM
  3. how to bleed oil on a 1986 mercury black max 200
    By nubby in forum Technical Discussion
    Replies: 11
    Last Post: 06-24-2014, 09:56 AM
  4. mercury 200 black max overheating!!!! Please help
    By koshlakehydro in forum Technical Discussion
    Replies: 21
    Last Post: 05-30-2014, 09:36 AM
  5. 1986 Mercury Black Max carburetors, need help.
    By David@mpys in forum Technical Discussion
    Replies: 2
    Last Post: 06-17-2013, 10:12 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Eddie Marine - Horizontal