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r1jakecfd

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    43
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About r1jakecfd

  • Rank
    Member

Wheel Horse Information

  • tractors
    520H, 310-8, PF Engineering Front End Loader (on 520)
  • favoritemodel
    520

Profile Information

  • Location
    Essex, MA
  • Occupation
    Firefighter/Paramedic
  • Interests
    Surfing, guitar/vocals, any music, hockey fan

Recent Profile Visitors

711 profile views
  1. Thinking about 520H Repower

    Thanks for all the advice Onan! You hit the nail on the head. I bought the cheap graphoil set which I had never used before. I’ve always used the OEM aluminized gaskets and never worried about re-torquing. New gaskets coming are OEM! I’ll still re-torque after a short run. When I checked the bolts when removing the head the Middle ones were obviously loose. Lesson learned. I’ll be happy to get it back together for more snow duty! Who knows after that... Turbocharger, supercharger, Nitrous (for snowbanks)?!? 👍 Cheers
  2. Thinking about 520H Repower

    Thanks, the Vanguard will definitely be my next move. The strange thing that I can’t figure out is that the vanguard costs more as a bare engine but the converted WH Repower is $400 less than a Honda. The Vanguard is just over $1700 from Small Engine Warehouse and I was just quoted $2080 for the Honda GX630 conversion from Repower Specialists. At Northern Tool, the bare Honda is $1200 vs $1450 for a Vanguard. Who knows???
  3. Thinking about 520H Repower

  4. Thinking about 520H Repower

    Yes. There’s no clearance to get at the rear cylinder head if you don’t remove it. Also, it’s a good idea to remove it so you can inspect and clean the mating surface for a good seal.
  5. Thinking about 520H Repower

    Good point. I’ll run it, let it warm up and retourque. It ran great for about 15 min then got really loud and lost power. New head gaskets on order. I’ll let you know how it works out! Thanks
  6. Thinking about 520H Repower

    It’s a good lesson in buying OEM parts. Material is completely different material, not aluminized. OEM set on order
  7. Thinking about 520H Repower

    Well, I’ll let my new head gasket speak for itself. I’m not sure what happened... was it installer (Me) error, old head bolts that backed out. Not sure. I’m definitely ordering a new OEM gasket kit and new head bolts. I’ve also bought High temp Threadlocker to install this time around. I’ll let you all know how it works. Very relieved it’s not a valve seat! Thanks to everyone for their input!
  8. Thinking about 520H Repower

    I’m going to take the valve cover off first to check adjustment and if I threw a spring/retainer. If things look good I’ll take the head off to check that. I just decarboned and put a new gasket set in about an hour ago. I torqued everything to specs so it should be good but I am human!
  9. Thinking about 520H Repower

    Haven’t tried oil yet and I do have spark plug tester but also had a good spark when I removed the plug to test compression.
  10. Thinking about 520H Repower

    Great point. I think I’m going to check the valve adjustment first and while I’m in there make sure I didn’t lose a valve spring retainer. I just read about that on another feed for the same symptoms I’m having. I’ll keep you updated on the progress/problem found. Thanks everyone!
  11. Thinking about 520H Repower

    OK guys, here we go again! I decided to test the compression and have no compression in the front cylinder. I know it’s usually the rear cylinder that has issues but that has over 90 psi. Like I said in my first post, I decarboned the heads/valves, reseated and adjusted the valves, new (non-OEM) gaskets and new plugs. Running really rough and loud with misfires and loss of power. Any advice or recommendations before I convert it to a boat mooring?😂 Any input/advice would be greatly appreciated! Thanks Guys! John
  12. Thinking about 520H Repower

    At this point seriously looking at the Predator! Getting frustrated troubleshooting.
  13. Thinking about 520H Repower

    Now that I think about it, after I started it for the first time, my vacuum gauge was reading about 28-30. When it started running poorly, it was reading about 20. I think I may have found the problem! I guess you get what you pay for!
  14. Thinking about 520H Repower

    Good idea! I didn’t think of the air cleaner. I’m also going to check the torque on the intake and exhaust bolts. I just redid the top end and used the $30 gasket kit vs Onan OEM. The gaskets look different than OEM ones so I wonder if that has something to do with it? I definitely won’t find out today as it’s 12 degrees right now, going down to negative numbers tonight and I have an unheated garage!
  15. Thinking about 520H Repower

    Hi Guys, The Onan in my 520H was running poorly so last month I took the heads off, decarboned, cleaned/reseated the valves, checked valve seats and reassembled with new gasket set. When installing intake manifold, I realized last year (carb cleaning) I forgot to hook up vacuum line from manifold to gauge. Hooked it up correctly this time and ran great. First blizzard yesterday and started snow blowing. After about 15 minutes the became noticeably louder with less power. I was wondering firstly if anyone has any idea what went wrong? Also, I was thinking about repowering with a Honda or Vanguard and would love opinions on which way to go? Also, should I go with an engine or kit and which company? I’m good at fabrication, etc. Thanks in advance! Happy NewYear
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