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  1. ScottinAZ

    data tag location

    just as an update, I finally found the damn tag.... buried under a mass of dust.... its on the Port valve cover.... and sure enough, I have the drive I thought I did... 432APHUB
  2. ScottinAZ

    Houston….. We’ve had a problem…..

    and its starting to look like an engine again.... heads are on and torqued, rockers reinstalled, and the intake is just sitting in the valley (keeps crap outta the engine....) Ill install the intake tomorrow and run a compression test on #4 to make sure we have a good cylinder. The carb kit...
  3. ScottinAZ

    Houston….. We’ve had a problem…..

    well, both heads are off and cleaned... just waiting for the damn FedEx dude to show up with the valve seals and head gaskets.... then I can get that all installed..... I hate sitting on my hands waiting for shipments.... Life was so much easier when the parts houses actually stocked parts.....
  4. ScottinAZ

    Houston….. We’ve had a problem…..

    yeah, I am going with Delco plugs in it, MR43T.... having the correct reach should be better all around. The old plugs were a Champion RS12YC, which indeed is a Vortec plug..... somebody done OOPSed that one.... On another note, the second head is off, and I am lapping in the valves for it now...
  5. ScottinAZ

    1994 MERCURY KNOCK NOISE

    either that or too long a reach on the plug. if the plug is sitting too deep in the hole, its gonna hit something....
  6. ScottinAZ

    Merc 3.0 belt replacements can be challenging time-wise, but would you,

    exactly... one of the motor mounts goes THROUGH the center of the belt. other than that, its an easy job. Not that its HARD, mind you, just need a way to support the engine when you remove the mount.
  7. ScottinAZ

    Houston….. We’ve had a problem…..

    and a quickie of what I believe to be the root cause of the problem.... the wrong spark plugs..... no chance the plug on the left wasnt overheating...... with that many threads in the cylinder, I am lucky to have gotten all six out
  8. ScottinAZ

    Houston….. We’ve had a problem…..

    ok, so the healing starts today..... new valves, intake and exhaust came, along with some other parts.... Machine shops are backlogged for months, so these are just getting lapped in. Not the "best" way, but has worked for decades in many engines in the past. Will work "good enough" for this one...
  9. ScottinAZ

    Houston….. We’ve had a problem…..

    That’s what the general thought is. Brought the valve and plug into work and showed our bus mechanic, and he thinks the same. Wrong plug, torched electrode stuck in valve, and that’s all she wrote…. It’s a standard bore and judging by many clues, it’s never been opened before. This one will live...
  10. ScottinAZ

    Houston….. We’ve had a problem…..

    that is the current plan... get the heads done, service everything, and get it wet.....
  11. ScottinAZ

    data tag location

    yep, looks like the same inside as engines Ive been doing since I was a kid.... as you say, nothing special, and definitely not at the top of the heap for performance. If I had my druthers, I would completely redo the motor, (or v-8 swap it) but that isnt in the cards for this year. I want to...
  12. ScottinAZ

    data tag location

    yep. even though it has the plastic "Vortec" valve covers on it, it has a set of 181 heads, which are distinctly non-vortec...... looks like a pair of 3/4 scale smallblock emissions heads.... pistons as well with the small dish and 4 valve reliefs....
  13. ScottinAZ

    Houston….. We’ve had a problem…..

    at this point, its only another head gasket away..... but I dont expect any surprises on that side.
  14. ScottinAZ

    Houston….. We’ve had a problem…..

    Offending valve is out. Seat looks OK, so a quickie valve job, and a set of valves should have me reassembling this monstrosity..... Even if the 4.3 is 3/4 of a small block, the head sure didnt weigh any less...... ahhh good old cast iron...
  15. ScottinAZ

    data tag location

    Figures... doesnt do me a damn bit of good now for ID purposes though..... At least for 95, there was only one 4.3 combo listed, so it should still be easy to find the correct parts....
  16. ScottinAZ

    Houston….. We’ve had a problem…..

    yes, it does to me as well. but with a known bad fuel pump, who knows how they got it "home".... I figure I was gonna go through the carb anyway, so I can tune it to my liking once I get the motor back together.
  17. ScottinAZ

    Houston….. We’ve had a problem…..

    well, in the interests of science, I pulled the valve cover this morning, figuring if it was a tuliped valve, that it would be sitting proud of the others, and the rocker tight while on base circle on the cam.... no such luck... so I pulled the head... and yeah, there is a problem... #4 exhaust...
  18. ScottinAZ

    data tag location

    damn. mine must have taken a powder.... its gone....
  19. ScottinAZ

    data tag location

    what about the general tag for the whole outdrive package?
  20. ScottinAZ

    Houston….. We’ve had a problem…..

    New to me 1995 Four Winns 170, 4.3 motor… Looks like I will be tearing into the engine sooner rather than later…. #4 plug shows malice in the combustion palace……zero compression. Its neighbor shows 150 in #2. #6 also shows 150…. So it’s NOT a head gasket…. Maybe I get lucky and it just...
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