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  1. Bt Doctur

    Alpha 1 Gen 2 shift shaft seal replacement

    77674 .35 x .75 x .12 1/8th inch thick
  2. Bt Doctur

    Water leak

    guessing the water inlet O ring is missing/damaged and your forcing water into the main bellow, pull the drive to inspect
  3. Bt Doctur

    Rebuilt my mercarb, now runs awfully

    could by a standard 2bbl on ebay thats not painted inside for around $90
  4. Bt Doctur

    Water pump leak?

    never grease or oil on those types of rubber products, use K-Y products
  5. Bt Doctur

    Is this engine oil good?

    mercruiser V6 flat tappet motor .I use this runs cooler, has high zinc, and has much better oil pressure when hot Shell Rotella 5 gal. 15W-40 T4 Motor Oil
  6. Bt Doctur

    Mercruiser 3.7 4 Barrel Electric Choke

    https://duckduckgo.com/?q=rochestor+electric+choke+elements&t=newext&atb=v337-1&ia=web
  7. Bt Doctur

    Low Voltage at RPM?

    losing voltage at rpm could indicate a winding opening up at high rpm inside the alternator
  8. Bt Doctur

    guardian mode, low water pressure after replacing impeller

    low water pressure and high temps are a sign of a water restriction, You dont list a drive but mentioning a impeller in the drive is either a alpha1 or gen II.
  9. Bt Doctur

    1979 Cobalt 18DV w/ MerCruiser 260 and Alpha 1 - No Raw water to engine

    isn`t that feed hose on the wrong side of the T housing?Water inlets are normally on the port side
  10. Bt Doctur

    guardian mode, low water pressure after replacing impeller

    Fine but whats the engine temp doing
  11. Bt Doctur

    alpha 1 gen 1 noise

    I agree, gimbal check and oil check for any metal ,never heard a bearing sound like that
  12. Bt Doctur

    1989 mercruiser Aplha One. water temp senor issues

    usually with the housing facing up in a normal position the sender is stbd and the alarm is port
  13. Bt Doctur

    Need help: Bizarre Bravo III freshwater galvanic corrosion quandry

    another cause could be a incorrect charger wired incorrectly .Second place it the trim sender .With the key on there is a constant 12 volts at the sender. If the voltage is leaking from the wires you will get the same symptoms .You can rewire the system so that it only operates the gauge when...
  14. Bt Doctur

    new fitting for drive oil res for older boats

    Currently have in the works a fitting to replace the gear lube monitor no longer available.Used on MC1, Alpha1, alpha GEN II without the dribble valve assembly With this redesign you will be able to use a trim pump hose , the lube res bottle from the GEN II or Bravo,bracket i will supply the...
  15. Bt Doctur

    Freeze plug part number

    And the correct terminology is "core plug"
  16. Bt Doctur

    Mercruiser Setting Timing on 3.0L

    cant go wrong with Fel-Pro gaskets
  17. Bt Doctur

    I have a leak.

    whats that red circle at 9:00 position and looks like the gasket is cut there
  18. Bt Doctur

    destroyed 2 gimbal bearing tools trying to dislodge a seized bearing. still stuck

    does yours look like this? under $50
  19. Bt Doctur

    Gimbal Hinge Pin Bolt stuck/stripped

    agree. when stripped weld the allen wrenc in first, If still stubborn use high heat to loosen the loc-tite
  20. Bt Doctur

    home made tool to safely remove GEN II and Bravo oil line

    so much easier to not break that pesky plastic nipple, I also have on the board a re-engineered version of the remote oil res for Alpha1`s and GEN II`s or Bravos. The main fitting is being made and you use a power trim line from the pump and the regular GEN II res and bracket. Will post pics...
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