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  1. Scott Danforth

    Mercruiser 3.0 oil pan gasket

    boating is the worlds most expensive hobby. It costs me more per year than my buddy that races spend the $100 that is cheap insurance RTV has its place, however its only a little dab at the corners of the gasket where the rear main is split. as indicated above, you only want to do the job once
  2. Scott Danforth

    Start up issues with a Frankenstein 86 Mercruiser 3.0

    Yes, especially if you are using your finger to check. Sometimes its hard to tell between pfft and PFFFT verify TDC of compression stroke. You may need to pull valve cover and verify rockers
  3. Scott Danforth

    Mercruiser Pre-Alpha (MC1) Broken Beyond Repair... Options/Recommendations?

    Shops wont swap used parts. Most will only swap in brand new If you find a shop, expect $125 per hour or more
  4. Scott Danforth

    '85 Sierra 16.5' Fiberglass - Floor / Transom / New Layout

    BTW, did the whole job myself. those are 1500# ratchet straps looped over the ceiling rafters. it took me 2 hours to pull the cap in the first place (3 batteries in the cordless drill and a half hour looking for the screws in the carpeted front splash)
  5. Scott Danforth

    '85 Sierra 16.5' Fiberglass - Floor / Transom / New Layout

    pull the whole cap it will look like this much much much much much less work than leaving the cap in place below are pics of my re-assembly of a prior boat
  6. Scott Danforth

    Towing with/without Overdrive

    I use the trailer button. changes shift points and when the last shift is done.
  7. Scott Danforth

    Urgent help - nearly broke down at sea. Fuel Problem.

    check your fuel tank contents for the same goo.
  8. Scott Danforth

    Best technique for waterproof solders?

    its just a non-insullated butt connector inside of epoxy lined heat shrink
  9. Scott Danforth

    Best technique for waterproof solders?

    start with a new 100' spool of trailer wiring. run a line down each frame rail of the trailer. make your splices at the coupler end if posible. all others non-insulated butt connectors and epoxy lined heat shrink.
  10. Scott Danforth

    1976 Apollo Tri Star fuse box location

    welcome to boats. my 84 Avanti had 2 fuses in the dash for most of the systems, a circuit breaker back by the motor the old 74 mirro craft that the family had was in-line fuses back by the battery. the factory manual for your motor will show the wiring harness and the fuses for the...
  11. Scott Danforth

    Start up issues with a Frankenstein 86 Mercruiser 3.0

    the EFI variant came about 2010 first issue is the head and block are not same generation unless he also went with the older head. most likely the dizzy is 180 out.
  12. Scott Danforth

    140hp 3.0L main bearing question

    those are bearings for a pontiac 2.5 liter (151 cubic inch) I cant even find the 153/181/196/230/250/290 engines in the clevite catalog. https://www.mahle-aftermarket.com/media/local-media-north-america/pdfs-&-thumbnails/catalogs-and-literature/engine-bearings/eb-40-14.pdf did you receive the...
  13. Scott Danforth

    Intermittent Backfire 4.3 EFI

    your serial number is 0M009586 https://www.mercruiserparts.com/4-3l-efi-gen-tbi-gm-262-v-6-0l01200
  14. Scott Danforth

    Start up issues with a Frankenstein 86 Mercruiser 3.0

    you have an early motor in a late application the 3.0's changed in 1991 generally you try to keep the parts 1991 and later or 1990 and earlier
  15. Scott Danforth

    Carb Recommendations for 5.7L Vortec?

    I like a Holley 4150 (715 CFM 80309 is what VP put on many engines)
  16. Scott Danforth

    Help with AQ125A with a pertonox ignition kit

    with constant power to the coil + take a jumper wire from the coil - and rapidly touch ground. your coil should fire every time you remove the wire from ground. if you have spark there and none with the coil connected to the pertronix, then the pertronix isnt switching to ground use a match...
  17. Scott Danforth

    Gelcoat cracking

    the best route and often the shortest route is the one that seams the most daunting. wood is structural, epoxy wood filler is just filler think of removing a bone from your body and replacing it with a chunk of styrofoam.
  18. Scott Danforth

    Mercruiser 470 Coolant Loss and Milkshake Oil

    Something not adding up If its the cam snout seal or the head gasket, it wont hold 20 psi If the water jacket is empty and you tested pressure to 20 psi and it held, you dont have a leak
  19. Scott Danforth

    new carb new issue

    Test first Mindlessly swapping parts will cost you 10x doing a proper diagnostic test
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