Page 1 of 3 123 LastLast
Results 1 to 10 of 29
  1. #1
    Postie1686's Avatar
    Join Date
    Jul 2020
    Location
    Saint Paul, MN
    Posts
    96
    +1
    3

    Msx 150 double rebuild time!

    Well my riding season was cut short this year. Itís disappointing, but over the winter months my father and I will be rebuilding the engines for both of my MSX150ís.

    the red machine suffered a intermediate water pump gear failure. We thought I had got lucky and saved the head gasket. Turns out we were not so lucky.

    The grey machine after finally solving it limp mode issue the previous owner had. He rode it that way for about 35 hours. After about 20 minutes of riding at full steam the nikasil plate in the cylinders let go.

    so here we are time to rebuild both and have two engines that we know should last next summer lol.

    couple questions for those of you in the know! I live in Minnesota where it gets damn cold. We plan to pull both motors and move the hulls outside for the winter. With the engine removed is there anything I should do to the hulls for storing them outside. Fuel stabilization I will do.. any other things I might want to do?

    got some time tonight so Iíve got the red one 80% ready to pull.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	BF0E39F2-350C-4766-98A1-B319062930E1.jpg 
Views:	86 
Size:	124.9 KB 
ID:	467079   Click image for larger version. 

Name:	6AFBF8DE-A53A-4C3E-A431-9B2536F9B137.jpg 
Views:	77 
Size:	113.5 KB 
ID:	467080   Click image for larger version. 

Name:	19D452F7-A488-4801-A504-0E0CF4010070.jpg 
Views:	82 
Size:	85.5 KB 
ID:	467081  


  2. #2
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    43,960
    +1
    2,375
    Wet vacuum the water out of the waterboxes.

    Vacuum any bilge water out.

    Remove or stabilize the gasoline in the tank. Cap off the fuel hoses.

    These days with ethanol fuel emptying the fuel tank may expose the fuel pump to rusting in the air.

    Take lots of photos and notes of how things are and where they go. Might save you from some forgetting when putting it back together several months from now.

  3. #3
    Postie1686's Avatar
    Join Date
    Jul 2020
    Location
    Saint Paul, MN
    Posts
    96
    +1
    3
    K447 do you know of a good cap for the fuel lines? Or just remove the black clip fitting and shove a rubber plug in there?

  4. #4
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    43,960
    +1
    2,375
    Quote Originally Posted by Postie1686 View Post
    ... a good cap for the fuel lines?

    Or just remove the black clip fitting and shove a rubber plug in there?
    I do not have any specific recommendation for plugging disconnected fuel hoses.

    Opportunistic use of whatever was at hand, basically.

    In the past I have used golf tees, stainless steel clevis pin, or perhaps a capped brass hose barb.

  5. #5
    Postie1686's Avatar
    Join Date
    Jul 2020
    Location
    Saint Paul, MN
    Posts
    96
    +1
    3
    Well after taking the better part of a month off from working on these. It was time before the snow flys and I didnít want to be moving the empty hulls around. We took the better part of the morning and pulled the engines from each. Now I just need to prep the hulls to sit outside while we start the rebuild process...

    couple questions

    1. the thermostat I think I was to put the 160 degree ones in. Is there any reason I should not?

    2. oil pump. The one ski has 74 hours on it. Is the high pressure pump really a must at this point?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	E220943B-F191-4319-81DC-2BFF13E4D8B9.jpg 
Views:	215 
Size:	124.5 KB 
ID:	467918   Click image for larger version. 

Name:	98E8BC7D-1E2C-41F0-A5D7-366C3690C51E.jpg 
Views:	204 
Size:	96.5 KB 
ID:	467919   Click image for larger version. 

Name:	974976DE-F6A9-43E2-833A-1978644C0F8C.jpg 
Views:	219 
Size:	124.1 KB 
ID:	467921   Click image for larger version. 

Name:	4FE8E6D9-FEF1-4288-9742-C24C90592AA6.jpg 
Views:	208 
Size:	123.9 KB 
ID:	467922  

  6. #6
    Mike Greenwood's Avatar
    Join Date
    Jun 2015
    Location
    Tulsa, Oklahoma
    Posts
    729
    +1
    61
    These motors run better at 180. If you are asking about deleting the high pressure oil pump..... don’t.

  7. #7
    Postie1686's Avatar
    Join Date
    Jul 2020
    Location
    Saint Paul, MN
    Posts
    96
    +1
    3
    Quote Originally Posted by Mike Greenwood View Post
    These motors run better at 180. If you are asking about deleting the high pressure oil pump..... don’t.
    no sorry I wasn’t meaning delete it. I was meaning with only 74 hours does it really need to be replaced?

  8. #8
    ripcuda's Avatar
    Join Date
    May 2010
    Location
    Newman Lake, WA
    Posts
    2,621
    +1
    208
    Nice spacious work space!

    Quote Originally Posted by Postie1686 View Post

    1. the thermostat I think I was to put the 160 degree ones in. Is there any reason I should not?

    2. oil pump. The one ski has 74 hours on it. Is the high pressure pump really a must at this point?

    I agree with Mike... stick with stock temp thermostats. Heck, I'd just test the ones you got in a pot and confirm they open/close when they should... and if they do, use them.

    If the engine had Nikasil failure... then, yes, I would replace the high pressure oil pump. If not, should be fine with such low hours.

    As for fuel lines... I would NOT remove the quick connects. They are fragile. Just wrap the end of the fuel line in a plastic bag with tape and zip-tie them up high in the hull (above tank)... shouldn't have any issues.

    Cheers!

  9. #9
    Postie1686's Avatar
    Join Date
    Jul 2020
    Location
    Saint Paul, MN
    Posts
    96
    +1
    3
    Well got everything cleaned up and covered up and tucked away for winter. Now to start cracking open some blocks!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	E67C6C33-64BF-4F7E-90DB-41BB9963AD3E.jpg 
Views:	44 
Size:	72.8 KB 
ID:	468212   Click image for larger version. 

Name:	11876FD1-9DEE-484D-914E-8E040C9B0A28.jpg 
Views:	40 
Size:	180.4 KB 
ID:	468213   Click image for larger version. 

Name:	D41B0D9F-4AB2-47FF-9D6B-6CFD4348B0FF.jpg 
Views:	31 
Size:	191.8 KB 
ID:	468214  

  10. #10
    Postie1686's Avatar
    Join Date
    Jul 2020
    Location
    Saint Paul, MN
    Posts
    96
    +1
    3
    We are about to rip into these engines. Looking for information on a chain tool. The one Weber has is pricey. Is there another option for breaking and reassembling the chain?

Page 1 of 3 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. MSX 150 Rebuild Questions
    By TimMn in forum MSX/Matrix
    Replies: 13
    Last Post: 09-25-2017, 09:41 PM
  2. My 1st MSX 150 Rebuild
    By Fury in forum MSX/Matrix
    Replies: 5
    Last Post: 10-17-2016, 08:21 PM
  3. Replies: 26
    Last Post: 07-27-2016, 02:43 PM
  4. MSX 150 crazy stuff... need help big time
    By boomanch1967 in forum MSX/Matrix
    Replies: 17
    Last Post: 08-15-2011, 05:09 PM
  5. msx 150 rebuild advice, upgrades
    By silverbk in forum MSX/Matrix
    Replies: 1
    Last Post: 07-27-2011, 09:45 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •