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  1. Scott06

    Old ford 302 no spark

    Listing says the advance comes in earlier which is prob ok. I would worry about total advance dont think you want more than 30 total to keep detonation at bay
  2. Scott06

    Anyone use a 2017 kia Sorrento AWD/4wd high output engine?

    Exactly- I found when buying my Highlander the XLE model (5500# rated) vs LE model (1500# rated) has same drive train and brakes only differences are engine oil and trans coolers
  3. Scott06

    Compression ratio 5.7l

    If you get 9.5 and run 91 with factory ignition advance you will be fine from a detonation standpoint. I would think the flat top is better than the factory dished piston for detonation potential .
  4. Scott06

    Merc 470 no crank

    yeah these guys are probably too young to know how a points system bypasses the resistor during cranking
  5. Scott06

    Compression ratio 5.7l

    Depends on gas you want to use , octane Piston profile may play a role if you have a quench build. But generally 9.5 or so if you want to use pump gas. A touch higher if you have quench pistons.
  6. Scott06

    Gelcoat cracks around mercruiser transom plate opinions and repair questions.

    Ive never had to deal with transom rot but general consensus is you can only really tell by drilling , if wood shavings come out dry just seal with 5200. transom hardware being tight is a good sign.
  7. Scott06

    Merc. 5.7 Repower wiring

    No difference on choke coil between a 2 or 4 bbl carb. I put a edelbrock 1409 on my previously 2 bbl carbed 5.0 merc, used the factory purple wire it works fine
  8. Scott06

    Merc. 5.7 Repower wiring

    My merc takes the purple to the choke, but In the drawing you posted the purple yellow is fed via the oil pressure switch as well As getting power off starter when cranking
  9. Scott06

    Overheat on 5.0 with SX outdrive

    As lou said water doesn’t compress so when you get water in a cylinder vs air and fuel, when the piston comes up on compression stroke there may not be enough room in the combustion chamber to accommodate The water volume. The compression ratio of 9 or so to one if you have a cylinder half full...
  10. Scott06

    Merc. 5.7 Repower wiring

    Mercruiser runs the electric choke off the purple wire going to ignition on. they say to do this so as not to lower voltage off the ignition circuit. On my old GTO i ran the electric choke off the wiper circuit upstream of the wiper switch. Easier in a car where the fuse box is. 4 ft from the...
  11. Scott06

    Gelcoat cracks around mercruiser transom plate opinions and repair questions.

    normally when somebody runs a bead of sealant around the transom housing it is leaking either from a drive impact or rotten transom. Did you drill into the wood of the transom to verify they are sound? Are u sure that is gel coat and not a repaint of the boat? If the transom is indeed sound...
  12. Scott06

    Mercruiser 3.0 Overheat stop working

    Start with a compression test. how long was it hot and how hot did it get. May have smoked something electrical. If you need to check for bent pushrods just remove the valve cover, but if it got hot a vlave is probably hung up and why the pushrod is bent. the DDIS all dogde speak of is obvious...
  13. Scott06

    Leak at shift lever alpha 1 gen 1

    Not air but you will get water in the gear lube turning it milky and potentially ruining bearings and gears. What did you lube look like when you drained it ? Assuming you likely just winterized? If water gets left in ther and freezes can crack the housing
  14. Scott06

    What is this wiring connector?

    Even if the connectors are not the same you can make your own from -to cable if you go on line you can find these marine and automotive connectors and make up what you need
  15. Scott06

    Leak at shift lever alpha 1 gen 1

    Yes that is a common leak point unless u know when it was resealed I would recommend doing a pressure test and checking all the seals maybe just have the entire drive resealed
  16. Scott06

    Merc 470 modifying water pump seal problem

    Is that two speedi sleeves? one for each seal area I assume ?
  17. Scott06

    VP 5.7 WOT RPM question. Is 4100 RPM low?

    Your should be min 4600-5000, i think so e of the Merc mpis go to 5200 on the same block. bottom line prop it such that you get 4900-5100 light load and the performance will be good. i would verify your tach is accurate and in good working order. what is yiur speed at 4100 rpm
  18. Scott06

    2002 Mercruiser 4.3L MPI Fuel Pump Style

    just a note to OP - SAE J1171 will be on all electrical components ( maybe fuel components too) that are marine rated. Vs automotive the alternators fuel pumps distributors etc will have design features to prevent spark and fuel vapor explosions and fire . it not the part number for the component
  19. Scott06

    What is this?

    looks like a light maybe a light for a storage compartment
  20. Scott06

    Old ford 302 no spark

    That doesn’t sound like a marine fuel pump , did you get an automotive one
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