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  1. Scott06

    Mercruiser Setting Timing on 3.0L

    you might be better off if the boat is on a trailer to take it to the machine shop and see if they have a machinist rule to look at the block.
  2. Scott06

    Freeze plug part number

    Have never seen the core plug for manifolds sold separately. you will likely have an easier time going to the auto parts store and getting a freeze plug based on OD. you can also use a rubber expansion plug if there is enough room between inside and outside of manifold. Did the manifold freeze...
  3. Scott06

    Mercruiser Setting Timing on 3.0L

    could be cant tell from the pics if the block surface is eroded or not. As mentioned below you need a long machinist flat bar to check the whole surface. You can put dykem or machinists dye on the block surface and sand with long sand block to see if the block is fire slotted- the dye will stay...
  4. Scott06

    1997 Mercruiser 4.3 LX not running steady steady at idle or higher RPM's

    get an ulntrasonic. well worth it. I did my buddies Holley 2 bbl off his VP a couple years back, Engine had all the symptoms of needing a carb rebuild, but when I opened the carb it looked clean, soaked all the parts in the ultra sonic using simple green as I was trying not to strip the paint...
  5. Scott06

    Mercruiser Setting Timing on 3.0L

    clean the head bolts and chase threads defintely ok to reuse. It may be the picture but look at the block closely where the gasket was blown between 2 & 3 - make sure the deck surface is not damaged as it can get fire slotted and cut so the new gasket wont take. Do you know if it overheated or...
  6. Scott06

    1997 Mercruiser 4.3 LX not running steady steady at idle or higher RPM's

    yes TB4 will not move at idle like a TB5 will. The accelerator pump ball wont affect idle quality, if you have a good pump shot and it doesnt bog when you stab the throttle leave it alone. If you adjust the idle mix screws does change the idle speed or quality? if not likely the passages...
  7. Scott06

    Mercruiser Setting Timing on 3.0L

    that looks like a GM manual as it says industrial marine - so yeah it probably is right- the merc manual has the carb info timing etc for how merc dressed it out per this link (may be worth what I paid for it..) you need manual #26 which is 98 and up 4 cyl gas alpha engines...
  8. Scott06

    1997 Mercruiser 4.3 LX not running steady steady at idle or higher RPM's

    have you set the timing on it and is the timing jumping around. Also disconnect the tach to see if it changes things. Bad tachs can mess with the spark
  9. Scott06

    Mercruiser Setting Timing on 3.0L

    get the factory service manual for your engine/serial number. The Mercruiser manuals are excellent resources for all details like this. I dont know off hand which manual you need, the only one I have for 4 cyl is #10 which covers 85-89 vintage engines. the guy in the video is twisting them to...
  10. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    Yes what was described interrupts the triggering signal between the dist and the coil, will keep coil from firing
  11. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    It’s the lower sketch and it goes under the rear motor mount . You can see the ear of the mount on the transom plate there. The flywheel cover mount sits on top of it
  12. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    Yeah the biggest engine they make with an alpha is the 350 mag mpi- 300 hp. i Think all the 6.2 s are 325 or 340hp . prob closest way to get there is take. 350 mag alpha and reflash it for a 6.2 fuel curve I think the work around it using a NC interrupter to cut off the signal from dist to...
  13. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    Could have resistance that’s why the test mentioned above it should move easily in and out of gear Smoothly
  14. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    Yes exactly should move freely and easily. Would also check they routed it correctly around the wye pipe . This is outlined in the gen 2 manual #14. Speaking from Experience if routedthe wrong way it puts a tight bend in it
  15. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    As mentioned above you should be able to take two fingers and move the shift cable in and out of gear. When I did my bellows 2-3 years ago I also replace the bushings on the swiveling shift shaft in the bellhousing. the upper one was quite seated and put some drag on the shift lever that the...
  16. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    There is no alpha ecu for a 6.2 mpi, as mentioned in the screen shot you have to do a workaround to get a bravo ecu to work with an alpha drive. if it’s wired like that then lit would make sense the lower shift cable is dragging and triggering the switch. was that screenshot off the marine...
  17. Scott06

    6.2L MX MPI Stalls when shifting out of gear

    What ECU are you using for this engine ? I didn't think they offered 6.2 MPIs with an alpha (shift interrupt) compatible ECU.
  18. Scott06

    I/O (Sterndrive) Conversion to Outboards

    You might also compare cost of extended warranties, this is probably insight into how much the manufacture knows they will cost over X years. I think Muc had pointed this out on a thread a couple years back.
  19. Scott06

    Alpha I Gen I Hinge Pin 'bushings' ?

    Also the older alphas had a grease nipple there as well. gen 2 and up have none of the grease points anymore. Machine shop or replace the ring are the two options
  20. Scott06

    Question about SX clutch torque capacity

    the cones are drawn together when running so not running that wont happen and lock tight. The same things happen when they get worn and the groves/surface finish on the clutch cones gets worn they either take a while to lock in gear or they slip .
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