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  1. Scott Danforth

    Wrong prop or bad tachometer....4.3 Mercruiser AlphaOne

    put a shop tach on it and verify
  2. Scott Danforth

    Volvo Penta 3.0 GLP-D (PCV valve popping off while running - carbon buildup on boat thru exhaust)

    in the really old days we had open valve train and you oiled it ever 10-15 miles with an oil can
  3. Scott Danforth

    3.0 merCruiser Max out at 4000 RPM.

    3.0's wont spin a prop above 21p just not enough motor there for the 1.98:1 so the 23p is not going to happen the stingray 185x weighs 2200# which is a lot of boat for that little motor.
  4. Scott Danforth

    Gauges

    test the gauges and the sender. gauges like fuel gauge and temp sender read 240 ohms at bottom of scale and 33 ohms at top of scale agreed, a bad ground will cause issues gauges can be repaired, however cost to repair gauges is about 5X the cost of replacing.
  5. Scott Danforth

    Volvo Penta 3.0 GLP-D (PCV valve popping off while running - carbon buildup on boat thru exhaust)

    they quit teaching Autos in the late 80's and it shows
  6. Scott Danforth

    No spark 2.3l omc

    did you set the points with a dwell meter? check your connections, you most likely have a bad connection. Start at the battery, work your way up to the helm cleaning and verifying every connection. points during cranking get 12 volts thru the starter, however only 8-10 volts when running...
  7. Scott Danforth

    What was mounted here?

    that is a block drain port, there is one on the other side too
  8. Scott Danforth

    9.8 hp vs 9.9 hp outboard engines

    merc started the 9.8's in the 60's the 7.5hp and 9.8hp motors were 11 cubic inch twins. same motor, different carb. later the merc 9.9's and the 15's were same as the motors got fatter, er bigger in displacement like the OMC product. the 9.9's getting a smaller carb the whole thing started...
  9. Scott Danforth

    1980 OMC 140hp electrical

    you obviously do not understand points type ignition systems standard resistors do not work for ignition systems. no color coding as found on 1/4 watt and 1/2 watt resistors will help you here. you need an ignition ballast resistor which is ~ 1.5 ohms (and about 200 watts), or you need about a...
  10. Scott Danforth

    Looking for Titan Model 60 rebuilt kit - 1" piston

    Im all for fixing things that can be fixed. however for trailer brake parts, I would not trust 10 year old rubber bits.
  11. Scott Danforth

    Cavitation plate

    foam should be a replace all thing
  12. Scott Danforth

    Looking for Titan Model 60 rebuilt kit - 1" piston

    if your that tight that you cant replace the whole master cylinder on a boat trailer, boating is not a hobby for you. I wouldnt trust 10 year old korean made rubber bits wheel cylinders come on loaded backing plates. I think the last time I paid under $100 for new backing plates, all...
  13. Scott Danforth

    Primary and Secondary Imbalance - Alfadan Outboard Motor ?

    another investment link
  14. Scott Danforth

    Volvo Penta runs great but burns oil

    Check your gauge, anything more than 150 psi means your gauge is off or you have oil in the cylinders
  15. Scott Danforth

    Does 1990 MCM 350 mag Tbolt IV already have melonized distributor gear? Replacing engine, have some questions..

    If you are worried, get a brass dizzy gear. However I wouldnt bother Use what ever pump pushrod you want You will need to rejet, and to do so, you have to read plugs and actually tune the carb ( no such thing as a canned calibration/tune) Run a rev limiter. If you prop looses bite ( coming...
  16. Scott Danforth

    AQ260A IMPELLER

    Wait until you get the boat, read the pump cover (they are johnson pumps) You may need to also get a bellows kit, PDS bearings, drive seals, carb kit, cap, rotor and wires and other maintenance items for a 35 year old boat
  17. Scott Danforth

    Primary and Secondary Imbalance - Alfadan Outboard Motor ?

    not sure what you linked to. however there are many concept engines. most of which can not be built on mass scale. the coats rotary valve motor comes to mind. Koenigsegg's little 2 liter is another.
  18. Scott Danforth

    Wellcraft 170 American underpropped?

    your drive is a 1.98:1. the 2.0 and 2.4 is for outboards and yes, it matters
  19. Scott Danforth

    Could a 4 blade actually be faster?

    I hit 41 in a 16.5 foot long boat with total weight in the 1800# range with a 3.0 spinning a 19p prop at 4600 RPM with light chop and only 1 person on board. no way a 3.0 can spin a 21p prop at 5300 RPM without nitrous or a blower. no way a 3.0 can live above 5000 RPM for very long. first...
  20. Scott Danforth

    Volvo Penta Trim Stopped Working

    welcome aboard could be relay could be the cheesy main plug for the motor could be the circuit breaker for the motor need to start reading voltages like AD stated, then find where the power isnt.
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