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  1. Scott06

    Valve seal replacement on 4.3

    do a leak down test if you can. Have had older engines that had good compression but also had a lot of blow by ... doesn't tell the full story if you are diagnosing. Either way of you get air leaking out valves into exhaust need to pull the head
  2. Scott06

    Pertronix question.

    Yes the copper would start the advance earlier in the rpm range. Also need to check total advance but I assume that is limited the same regardless of what spring is used to change how fast it comes in. You can try it but also pay attention to total advance to make sure it does exceed the...
  3. Scott06

    Volvo Penta 3.0GS engine missing mid throttle

    Looking at your plugs and filthy flame arrestor, clean the flame arrestor and try new plugs in it. Had a similar situation on my jet ski a few years back. Flame arrestor was plugged, ran fine on trailer , no power under load. Cleaned the flame arrestor, put new plugs in and ran fine. Was enough...
  4. Scott06

    Can I replace my 1994 Mercruiser 5.0 2BBL (305) with a 1998 5.7 2BBL (350) ?

    Absolutely worth doing the upgrade. Thats too much boat for a 5.0. it should be drop in as stated you may need to go up in pitch if it was previously propped to the upper end of wot rpm. I did a 4.3 to 5.0 swap kept same drive ratio went up in pitch 2” . given vintage differences between your...
  5. Scott06

    2004 mercury verado erc

    You might have better luck askinga mod to move this to merc OB froum
  6. Scott06

    Hard starting 4.3LX, normal or not?

    When the alarm horn goes off the oil pressure is built up. Thats what triggers it during cranking
  7. Scott06

    4.3 vortec engine ( water in oil )

    Some of the worst cars GM made especially the cheap interiors. My brother had a 80 malibu/229 V6... Still doesnt explain why 30 years (090M block is late 90's early 2k's) later they can't make up their mind with a jackalope metric/sae block.
  8. Scott06

    Maybe my turn for new boat time

    This is the software i bought fairly reasonable https://candoopro.com/ Its about $450 for a non professional license (limited to 4 HINs) and loads on your pc. Seems to do most of the major I/O and O/Bs can do multiple brands with add'l licenses.
  9. Scott06

    4.3 vortec engine ( water in oil )

    Yeah whole foods doesnt have much a a metric bolt selection… i never could get an explanation for why GM did the mix and match on same block.
  10. Scott06

    Hard starting 4.3LX, normal or not?

    Seems pretty normal , very similar to what i experience with my relatively new edlebrock 1409 which is essentially the same carb the long delay in starting after sitting is the carb bowl drying out. unless yours is wired differently the fuel pump runs during cranking getting power off the...
  11. Scott06

    Repairing Coupling assembly

    would also be expecting to replace the drive shaft going into the coupler, inspect gimbal bearing ujoints and bellows while in there. would verify alignment before you pull engine. Couplers usually last forever unless alignment is off. It sounds worse than it is if you can lift the engine high...
  12. Scott06

    Maybe my turn for new boat time

    i think the winterization ‘savings’ of OBs vs sterndrive is over blown. Still have to do gear lube, still have to do oil. Yes self draining and the oil is a hell of a lot easier… my boat the 5 drain plugs are relatively easy to get at But still wouldnt trade the stern of the boat where we hang...
  13. Scott06

    5.7 /Chevy 350 hard starting and stalling when idle

    If it is a good running engine , which most are not, yes by all means you will be way better off with a 5.7 i swapped a 4.3 for a 5.0 about 7 years ago. The boat i have wasn’t offered with a 5.7 so I thought it would be too much power… well the 5.0 works out great but for the same money i could...
  14. Scott06

    Maybe my turn for new boat time

    Same here. Not a sales pitch just my observations …I can say the factory manual for my brothers engine is great and comparable with mercs. Never needed any major parts but seem relatively available. i bought Candoo software and cables ($400) for my seadoo, so i could reset, the TPS… same...
  15. Scott06

    Maybe my turn for new boat time

    If you get in a bind i can speak very highly of the yam on my brothers boat. Very impressive engine and has been completely trouble free, and this coming from a die hard Mercruiser sterndrive guy…
  16. Scott06

    4.3 vortec engine ( water in oil )

    You may want to check out summit racing they sell atk reman marine engines and summit generally gets good remarks for customer service a d support https://www.summitracing.com/search/brand/atk-marine-engine/part-type/crate-engines?N=crate-engine-family:chevy-v6&SortBy=Default&SortOrder=Ascend...
  17. Scott06

    5.7 /Chevy 350 hard starting and stalling when idle

    Absolutely will drop in and give more power. might need to step up in prop pitch if old prop was close to WOT max on 5.0. How did you go from tune up to engine swap or did I miss somewhere in here that the 5.0 is dying ...
  18. Scott06

    4.3 vortec engine ( water in oil )

    Not sure if you are saying my comment was ridiculous or GM putting two types of fasteners on same block... My local hardware store (old school independent) had grade 8 bolts, only specialty items were from Mcmaster Carr ( https://www.mcmaster.com/ )grade 8 studs for flywheel housing (2) and...
  19. Scott06

    4.3 vortec engine ( water in oil )

    Call michigan motorz im sure they could do a shortblock… but you need to take the heads and have them magnafluxed for cracks or pressure tested As they were exposed to same freezing as the block. Doesn't make sense to just do a shortblock unless you are 100 % sure the heads are not cracked. By...
  20. Scott06

    Merc/Volvo interchangeability

    Strip it down to the long block and put all your merc accessories on it. Yiu could probably sell the VP accessories off the donor engine to recoup some costs .
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