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  1. Scott Danforth

    Burned valve or worse 1997 5.7 LX

    that plug insulator is also heat cracked. so it got hot most likely running lean. once the head is off, have the head tested and take a good look at the piston. as Bondo pointed out.....bits of it will be missing. being a 12 bolt intake, that means you have a 1995 motor (vortec heads came...
  2. Scott Danforth

    Trouble replacing thermostat

    welcome aboard. have you replaced the raw water impeller?
  3. Scott Danforth

    Ram cylinders

    a rebuild kit is $75 new cylinders are about $1200 each if you pay a dealer, add 5 hours at $150/hr if you removed the cylinders, buy the rebuild kit, go to your local hydraulic repair shop, they may charge you $100 to rebuild
  4. Scott Danforth

    Help with water temp

    Check with IR Most likely its the t-stat
  5. Scott Danforth

    E3 sparkplugs OMC 3.0 Cobra (chev)

    Didnt know that they made marine E3s
  6. Scott Danforth

    Volvo 290DP Trim will go down not up

    Remember, to go above 8 degrees ( trim range) and get into the tilt range. You have to pull the finger switch and thumb switch That relay is at the back of the gauge
  7. Scott Danforth

    89 3.7 merc bow rider / barley idles

    Service the points Service the fuel system
  8. Scott Danforth

    Ram cylinders

    Which vintage? Just get a seal kit and reseal Google 5 star marine
  9. Scott Danforth

    4.3 thermostat

    Get new manifolds
  10. Scott Danforth

    Where to Buy

    Valve cover gasket is same for the 2.5. Get a felpro rubber gasket for a 1962 chevrolet 153
  11. Scott Danforth

    Propeller

    You need to check your gauge or you have oil in each cylinder A new motor will have 150 psi. To get 175 psi, you would need to have a compreasion ratio of 12.5:1 (that is drag motor territory, boat motors are 9.4:1 or less)
  12. Scott Danforth

    350 mag 5.7l skipping

    Start with your fuel pressure, at idle, and under load Did you inspect the contents of the fuel filters?
  13. Scott Danforth

    Propeller

    First, welcome aboard A 19p would actually be fine if not underprop'd with a healthy motor? Start with a compression test
  14. Scott Danforth

    PCM no spark! HELP

    Did you plug in Rinda? Did you check the easy things like the MOB switch?
  15. Scott Danforth

    350 mag 5.7l skipping

    Most likely fuel system related
  16. Scott Danforth

    Can a 2020 CRV AWD tow a Crestliner 1650 SE WT

    Ok, so start with the full tow weight of 1500# and set realistic expectations of what you can buy A 14 foot utility boat with a trailer, 15 hp motor, 12 gallons of fuel, battery, depth finder, oars, 2 anchors and moderate fishing gear gear is about 1500#. I know, because I recently weighed the...
  17. Scott Danforth

    4.3 thermostat

    Advantage: none Disadvantages: Improper cooling (water flow can not be regulated) Engine does not come up to temp. This causes the following: Poor running Increased wear Acid build up in oil Condensation in oil doesnt burn off
  18. Scott Danforth

    Larson Cabrio 220 Shower Pump/Water in Cabin

    Just an FYI The boat builder probably didnt have a schematic, much less published to the public. Most of the boats in existence are made in the prototype shop, then documented with a "build book" for production which is a bunch of photos and some sketches and notes
  19. Scott Danforth

    Can a 2020 CRV AWD tow a Crestliner 1650 SE WT

    The CRV isnt a good tow vehicle for anything except a really small utility trailer Its a rebodied civic and its a short wheel base vehicle For your 1800# plus woth of boat, I would get a different tow vehicle
  20. Scott Danforth

    Where to Buy

    Other than OMC and the fact its a 3.0 (140hp) Would help to know what vintage. O MC had 4 different manifolds over the years on the 3.0 May want to check out TC electronics at sterndrive.info. they deal with Obsolete Marine Co
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