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  1. grewvin1

    anode bolts

    twin alpha one outdrives, 1987, one drive does not have anodes on the bolts the bolts are regular hex head bolts and no thread to put an anode on it. Would it be an issue to remove one at a time and replace with proper bolt? don't want to cause problem and lossen the transom seal or something.
  2. grewvin1

    Want hot water to shower and galley sink direct from engine

    Wellcraft, 1987, twin 5.7L. want to run line off of engine to run hot water to shower and sink taps. Is there a site for this or a kit. Where to take water off and is a return line needed for when hot water not being used?
  3. grewvin1

    Blister repair

    Have 22 blisters all in a 10ft radius. did knocked off the blister and water came out and small cavity showing glass weave approx. 1/32 deep. Best plan to make repair? Have read one suggestion to countersink area and fill with West epoxy. But need some guide on the complete repair. What to do...
  4. grewvin1

    Calling all Wellcraft Monte Carlo owners

    Want to hear from Monte Carlo owners, mine has twin merc. 5.7L Alpha one. Want to hear of any issues you have had what they were and how you fixed them. Ossmisis? hull bilsters. Mine has some water in the bilge and the pump will go off every 8-10 hours for a few seconds, when the float switch...
  5. grewvin1

    Calling all Wellcraft Monte Carlo owners

    Want to hear from Monte Carlo owners any issues problems solutions you have experianced with
  6. grewvin1

    Remote Oil Filter Kit

    Thinking of installing remote oil filter kit on my twin 1987 5.7L merc. engines. Would like some input as to the reliability of such units. Are they prone to leakage or oil pres. issues?
  7. grewvin1

    Model of outdrive?

    1987 merc. lower units, ser# OB683659 & OB683660 what type of drive do I have? Alpha 1? or Alph 1 Gen II?
  8. grewvin1

    Timing Debate, 8 Deg. verses 10 Deg.

    Have 1987 twin 5.7L carb, 4 bbl, thunder Bolt IV engines, spec's call for timing to be 10 deg. BTDC, I have also found information saying 8 deg. BTDC. Question is what would be the effect to have 8 deg. if calls for 10 or vice versa? I have been told the change in degrees will alter the power...
  9. grewvin1

    Wet Bruise in hull below water line seeping water through antifoul.

    Wellcraft 28ft, 1987. lift out on weekend for winter found wet spot below water by 2", 2ft before transom. Water was seeping out gouged it with screw driver superficially. Below gelcoat fiberglass weave saturated in an area of near to 3? diameter. Need best plan to make repair. This time of...
  10. grewvin1

    Tach, jumping why?

    1987, merc. 5.7L twins, wellcraft Monte Carlo. Would like to know typical reason why the tach's will jump and settle from time to time. Start up idle 1,000rpm for warm up and tach needle will jump to 3,000 or more then back and jump again. After warm up and slow idle out of slip to lake tachs...
  11. grewvin1

    Gimble brg seal or no seal?

    305V8, Alpha out drive, removed bad gimble brg and seal. Purchased new brg but cannot find seal in stock most marinas explain they don't put them in anymore. True?
  12. grewvin1

    5.7L twin engine and stick matching

    Mercrusier, Wellcraft 1987, twin 5.7L thunderbolt IV ign. Adjusted one engine timing, was way off and now at 8 deg. BTDC, other eng. was on the mark. Is there a proceedure to match the throtle sticks and engines such as RPM,
  13. grewvin1

    5.7L timing question

    1987, 5.7L mercrusier thunderbolt IV ignition, checked timing found it to be 12deg. ATDC, put it back to 8deg BTDC rpm went up, turned down the idle and the timing went to 2 deg. ATDC moved it back to 8 deg. BTDC idle went up and settled. Question this seem right? set the timing and idle climbs...
  14. grewvin1

    7.4L Loss of 500 RPM at WOT was 4500 now 4000

    1992, Wellcraft LXH, twin 7.4L mercuriser set up, thunderbolt IV ign. Both engines 4,500 RPM at WOT. Last weekend STBD engine would only reach 4,000 RPM at WOT Port still making 4,500RPM. Changed cap, rotor, and cleaned all engine ground wires. New fuel filters. Carbs are clean in throat...
  15. grewvin1

    What is the WOT Range for 454"

    Wellcraft St Tropez 1985, 10,500 weight 32' twin 454's, would like to know suggested WOT range. Tuned up buddies boat last week new, points, rotor, cap set timing. Went for run and reached at WOT 4500 rpm, buddy claimed never went over 4,000rpm before. He now concered (me too), this is too high...
  16. grewvin1

    Hard Cold Start 5.7L

    1985, Merc. 5.7L 4BBl carb, New dist. cap. rotor, new coil, new plugs, new wires, rebuilt carb. cleaned all - and + wire connections. New fuel filter, checked for fuel blockage in lines from fuel tank and connections tank check valve. Problem just began, cold start, pump throttle once or...
  17. grewvin1

    mercuriser 1985 5.7L engine. coil marked "use with resistor"

    1985 twin merc. 5.7L engine, rebuilt carb. new dis. cap rotor ignition pick up module new wires new plugs, new coil. engine ran great for 6 hrs then craped out. Backfire through carb at high speed or load, would only run at 2000 rpm. Changed coil ran great again but noticed on the removed coil...
  18. grewvin1

    Mercrusier 5.7L starter slave solinoid

    Wellcraft 1987, 5.7L merc. turn the key and starter slave solinoid clicks but starter won't go, turn key a couple of times then starter goes, starter solinoid or slave solinoid? All wire connections have just been cleaned pos. and neg. all 1,000 of them.
  19. grewvin1

    Belt number or size

    mercruiser 1987, eng. 5.L eng. ser.0B683659 need water pump/alt. belt number or size, picked up new boat and things real messed up, automotive stuff used wrong parts belt too thin rubbing on bottom of pulley trying to get things back to what should be on the rig.
  20. grewvin1

    Need spark plug number

    Mercury 5.7L 1987 ser# 0B683659, Can anyone give me the part number on the spark plug Champion?
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