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  1. R

    120 v4 , Oil leak at front of exhaust housing, between housing and lower unit.

    After running in test tank , a small amount of oil is leaking from the front of the exhaust housing at the lower unit. Is the oil from the crankcase head assembly seal? It doesn't seem possible for the lower unit oil to leak up through the shaft bearing housing seals and new water pump...
  2. R

    1993 johnson 120 v4 , oil in test tank ? question

    Recently replaced the VRO pump and using 50:1 mix plus the VRO. The test tank has oil in the water. Is it from the crankcase exhaust or a leaking crankshaft bottom seal. The oil is black and sooty like exhaust. The outboard is 17 years used. The lower unit has new prop shaft seals .
  3. R

    Gimball bearing question

    are the new bearings a sealed are the new bearings a sealed type and did the older bearings need to be greased through the grease tube. the bearings with a red dot on the side (the dot)should be oriented starboard with the grease tube? If they are permanently sealed then the tube still should...
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    Impeller question

    "A sign the impeller is workin "A sign the impeller is working? With the flushing hose connected and adding water through the thermostat covers, then running the motor causes the water to flow out of the heads. Right? Normally how much time is needed for the impeller by itself to pump water...
  5. R

    V4 120 cooling system scheme

    "When water is pumped from the "When water is pumped from the impeller through the water tube to the adaptor housing and to the block, does the Pump pressure hold the water in the block? With the motor off, is the water supposed to drain back out of the block and adapter housing, through the...
  6. R

    Fuel fill hose installation

    Should a sealer be used on the Should a sealer be used on the fill hose at the tank? or are the clamps sufficient? If sealer is used what kind. Brand?
  7. R

    Fuel pump for GM 57 flange id

    How is the flange id for a fue How is the flange id for a fuel pump determined? The sierra catalog at MarineEngine.com lists several for the GM 350. Can someone help with info. on which part to use for a (1996-2000)GM 5.7 .
  8. R

    Gm 57 cam

    "bought a reman. GM 5.7 . Want "bought a reman. GM 5.7 . Want to change the roller cam it came with to another that has a fuel pump ecentric. So acquired a GM performance cam for the 383 truck engine. Someone told me that it will work with any 350 vortec engine. Measured the intake lift at 431...
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    Fuel pump questions

    "a leaking fuel pump diaphram "a leaking fuel pump diaphram will , leak gas into the crankcase? so the clear hose to the carburetor prevents that right? what is the difference in auto and marine pumps? The clear hose line? a leaking diaphram would just leak into the crankcase but a leak in...
  10. R

    Omc to penta 270 outdrive swap

    "is it possible to change outd "is it possible to change outdrives from OMC to PENTA by altering the transom cut-out. I'm planning to repower a boat that has a chevy v8 and OMC , with a Volvo aq140-270. Is the 270 housing larger than the OMC.?}"
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