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  1. K

    Mercruiser 120 starting stumped?

    If there is no hole on top of the head then you will find it at the base of the water jacket inside the crankcase. That area is the thinnest part of those engines.
  2. K

    1981 120 Mercruiser idles rough when hot

    If the fuel system checks out you should look at the distributor. It only has 1 bushing and the other one is in the block above the oil pump. Also the posts that hold the advance springs and counter weights under the breaker plate tend to loosen up. If the posts in the distributor are tight...
  3. K

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    At this point I suggest pulling the suction tube out of the tank. Inside the tube there is a very fine screen that plugs up often, remove and throw it away.
  4. K

    1986 Mercruiser 260 (GM 350) Cracked Block?

    Summit has 383 Vortec marine long blocks @ $4500.00 with just under 400 hp.
  5. K

    Engine mount

    Use your engine lift hooked to the front of the engine. This will make getting the alinement easy by raising and lowering the engine. Back the adjusting nuts away from the engine bracket. Once the alinement is confirmed raise the bottom nut to the underside of the bracket plus 1/2 more of a...
  6. K

    1975 Slickcraft

    Take a look at the thickness of the transom where the drive unit is sealed with the boot. It is probably 2” at that point.
  7. K

    This is one reason you lower the out drive...

    Whenever you switch to an Alpha you will also need the flywheel housing and of course cutting the transom along with drilling 2 new holes. Also make sure the transom is 2”. I have seen some early 60s models that had 1.5” transoms. I never used the bellows cement, if the bellows is on right you...
  8. K

    This is one reason you lower the out drive...

    This is a 60s style gimbal housing. If you look at the raised 2 areas that the boot seats against I have in the past taken a die grinder and removed them. This will provide enough room so that the boot will be able to be clamped in place. Not the best way but compared to replacing the gimbal...
  9. K

    OMC 260 Stringer Stern Drive??

    I also think if OMC would have perfected the hydro system with just a mercruiser style interruption system there would have been less problems.
  10. K

    OMC 260 Stringer Stern Drive??

    I can remember late 70s OMC school in Miami working on the 800 with hydro shift. They should have stayed with it. All the switches and shift interruption caused more headaches. The Cobra would have much better with the hydro system.
  11. K

    I just got a 1980 Renken w/OMC stringer

    You need a Genuine OMC service manual for how to replace the pinion shaft and the seals.
  12. K

    5.7 merc quadrajet idle

    It appears that your carburetor is good for the time being. Do as AD suggested. If it still does not want to return to idle then try checking the distributor. Take a picture of your distributor so I can tell you how to check it.
  13. K

    5.7 merc quadrajet idle

    You can forget the choke as there is no place for the original choke stove on that Edelbrock manifold. If you are in the south are just use it during the summer. As AD suggested go over the throttle cable attachment. Quadrajets like around 3 turns from lightly seated on the idle mixture...
  14. K

    I just got a 1980 Renken w/OMC stringer

    Be sure to seal both sides of the stainless plate and the 4 bolts where they contact the stainless cover with #2 Permatex. From the picture of the water pump it should have worked. Do as SD said, run the engine with a hose connected to the thermostat hosing before installing the drive. This...
  15. K

    MOTOR SWAP

    If your original engine was a 2 piece rear main seal with a larger crankshaft bolt pattern the coupler could machined down to fit the newer small bolt pattern. I have had this happen a few times replacing freeze damaged engines. Any machine shop should be able to do this job.
  16. K

    Reverse Lock Mechanism Help: VP 280

    If the jack screw lifting rod is touching the stainless pin that protrudes from the suspension yoke that will prevent the drive from being locked in reverse. You need to get a genuine Volvo parts and service manual. In the picture “R” I think the coil springs are missing that fit under the...
  17. K

    Alpha one Gen one Sterndrive

    As AD said, the idle speed has to be 700 or under. If it is then it could be a loose propeller,[ sliding back and forth on the shaft]. Loose flywheel or coupler, rear engine mounts. The rubber grommets on the ends of the hydraulic rams. Even not enough fluid in the hydraulic system.
  18. K

    Wont go past 2500 rpm

    Just to be sure try to post a picture of the shift linkage showing the shift interrupter and any other switch that may or may not be there. I once had a 18‘ Donzi with the 383 Mercurusier engine that would not go past 3k. After going over any possible cause I went to NAPA with a spark plug and...
  19. K

    AQ 270 Disengaging at slow RPM

    The AQs like straight 30wt motor oil. As SD said the cable may not had been adjusted when the it was replaced. Remove the shift cover, shift to forward in idle position. Pull the cotter pin from the brass cable trunnion and see if the lever on the gear case will travel more. If it will not...
  20. K

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Since the gimbal bearing turns smooth it is good so do not worry about it. As the drive goes from left to right up and down the shaft moves in and out so the Triple guard grease will keep things moving and prevent wear. If you raise the trailer wheels and spin the them, you should hear nothing...
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