Boats For Sale:
time for new Manifolds |
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Tomahawk 
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Joined: October-15-2014 Location: Maple Grove, MN Status: Offline Points: 30 |
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 Topic: time for new ManifoldsPosted: May-10-2022 at 11:09pm |
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Manifolds painted, Decals applied, Installed and tested. Took pictures. Phone fell into lake while checking the hole shot. Testing good. Lost phone bad.
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KENO
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Posted: March-22-2022 at 8:28am |
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Yeah skip the ticket, the best or maybe worst is yet to come
Assuming you mean the exhaust hose, you'll have lots of fun wrestling around the 3 inch wire reinforced stuff and getting it installed on the copper tubes and the riser with a couple of sharp bends thrown in there. You might find it easier to take out the center section of the floor, which on my 76 involved carpet lifting and then you could access the screws holding the center section to the secondary stringers And you never know, that might lead to a carpet job Later years got easier with an easily removeable center section and in your pictures I might see some evidence that yours is easily removeable It gave more vertical room to move the copper tubes around to get the hose on. In the meantime, you could go find a friendly black bear to wrestle so you'll be in shape for the hose job  If the green arrow in the below picture is pointing at a rubber/vinyl strip in the floor (one on each side running back to the end of the floor), then it's easy to remove without having to rip carpet up.  |
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Tomahawk
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Posted: March-22-2022 at 7:44am |
I think I need to let my luck recharge. I might have used it all up. I am putting on fresh bolts and gaskets and hoses too. Thought I could reuse the hose but I ripped one up bad during disassembly. Now on to painting. |
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KENO
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Posted: March-22-2022 at 6:48am |
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You should also go out and buy a lottery ticket, just one
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flyweed
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Posted: March-21-2022 at 4:46pm |
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you are indeed lucky, and glad you got them out. NOW you can start fresh and use stainless. :)
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'93 Ski Nautique NWZ, Air Boom Tower
Drink Tonight..for tomorrow We Ride! |
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Tomahawk
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Posted: March-21-2022 at 3:00pm |
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So the three broken bolts turned out to be no problem. The two that broke off at the head had almost a half inch exposed thread. I was able to get them out with my fingers. The bigger surprise was that the one that was "deeper" had 2 threads exposed and I was able to turn it out. No drilling required. I am a lucky guy.
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KENO
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Posted: March-18-2022 at 12:24pm |
 It's a 3 wire connector that plugged into the voltage regulator harness. You can find it in the wiring diagram below that's pretty accurate for your 76 as it was built. (it doesn't show the neutra lsafety switch)  |
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KENO
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Posted: March-18-2022 at 12:15pm |
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Well, I figured somebody would have a comment like that, but here are some things to think about since it's broken in deep.
If you're gonna drill a hardened allen bolt, what kind of drill bit material do you need? Should it maybe be a left hand twist bit that might turn the remains out while you're drilling it? Am I real steady sitting/laying on the floor, drilling in that 3/8 hole so the bit goes in straight and doesn't snap off or damage the threads? If I get the hole drilled, will I break off an EZ out in the hole? Can I weld a nut to the remains instead of drilling? Not if it's broken in deep If I was gonna do it "right" the head would be off the engine or a portable EDM machine might be handy. You could look around at what some other 351w manifolds look like, say Indmar for example. They use 4 bolts per side and they don't leak. Here's a picture or 2 of the Indmar manifolds   |
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flyweed
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Posted: March-18-2022 at 8:44am |
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I don't know if just leaving it and only using 7 bolts is good advice. Will it work? probably, would it always worry me? YES. My dad always told me, if it's worth doing, it's worth doing right. Even if broken off, try and get it out, or redrill and retap it. If you don't feel confident doing that, take it to someone local who has experience doing that. Since you have the manifold off already, doing 1 bolt hole will be a pretty insignificant charge.
My two cents Dan |
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'93 Ski Nautique NWZ, Air Boom Tower
Drink Tonight..for tomorrow We Ride! |
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Tomahawk
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Posted: March-18-2022 at 8:17am |
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Assuming that you can get the 2 bolts out that have the broken off heads, I wouldn't be afraid to leave the one that' was missing and "snapped off deep" alone and use 7 bolts instead of 8 on that side. It should seal with no problem. Even if it is the last (or first) bolt? You might make for more issues by trying to get it out and have a bigger project than you want. I also wouldn't be afraid of getting rid of the old ballast resistor and cleaning up that wiring some. Lazy not afraid It looks like you have a Delco internally regulated alternator and don't need some of those wires that used to go to your old voltage regulator. I was wondering where that circled wire used to be connected. So the answer is voltage regulator? |
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KENO
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Posted: March-17-2022 at 6:24pm |
Assuming that you can get the 2 bolts out that have the broken off heads, I wouldn't be afraid to leave the one that' was missing and "snapped off deep" alone and use 7 bolts instead of 8 on that side. It should seal with no problem. You might make for more issues by trying to get it out and have a bigger project than you want. I also wouldn't be afraid of getting rid of the old ballast resistor and cleaning up that wiring some. It looks like you have a Delco internally regulated alternator and don't need some of those wires that used to go to your old voltage regulator.
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Tomahawk
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Posted: March-16-2022 at 10:15pm |
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16 bolts.
13 let loose without problem. 2 snapped off at the head. One before I even turned it. Both were fatigued. One was missing and snapped off deep. That won't be fun. Pics of the other parts.  Oil drain.  Old and New Ballast resistor  Heads snapped off. Fatigue was not new.
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KENO
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Posted: March-07-2022 at 7:56am |
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I think if you tried, you might be able to get that fuel filter a little closer to the hottest part of the exhaust manifold
When PCM started putting in a canister type fuel filter in later tears, it was mounted to the stringer, forward of the fuel pump and at least a little farther from the exhaust manifold Some later years after that had the filter farther back under the center floorboard, but still it was farther away from the manifold than yours is. How about a picture of the oil drain hose connection even if it's surroundings aren't pretty ?
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Tomahawk
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Posted: March-07-2022 at 7:21am |
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Swilliams is correct. Oil drain and Fuel filter. The wiring is also ballast resistor. I never took off the fried one so I have two there. It isn't pretty.
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KENO
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Posted: March-07-2022 at 6:22am |
I think you're lost in the wrong thread here. Tomahawk was looking for paint to match his Green PCM manifolds and Flyweed replaced his PCM's with PCM's like he wanted to do.
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ultrarunner
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Posted: March-06-2022 at 11:33am |
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What about a set of stainless Edelbrock's? You can usually source a good set on eBay. The Commander stainless are really nice also, but very rare.
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KENO
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Posted: March-05-2022 at 4:50pm |
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Sure, you've probably seen the address in another post recently.
If not let me know
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swilliams
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Posted: March-05-2022 at 4:00pm |
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Keno, can’t post any pics. Still don’t have the tool bar available. Got a request to Keith for some assistance. Perhaps I’ll just send it to your email.
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1976 Martinique,350 Omc. 1975 Glastron/Carlson CV16,115 Merc.
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Hollywood
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Posted: March-05-2022 at 12:14pm |
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How will you not sing some Joe Diffie every time you open the motorbox.
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KENO
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Posted: March-05-2022 at 7:41am |
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I'm hoping it's a fuel filter, but I could think of better places to mount it
I guess "I ain't never seen a thingy like that" , how about a picture of your thingy
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swilliams
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Posted: March-05-2022 at 7:20am |
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The upper appears to be the suction tube for the oil pan. The lower is a fuel filter. My Omc has the drain tube thingy(which I don’t use).
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1976 Martinique,350 Omc. 1975 Glastron/Carlson CV16,115 Merc.
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KENO
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Posted: March-05-2022 at 6:55am |
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My book too
 Curious eyes wonder what the stuff circled in yellow is in the picture below Lower circle, either a fuel filter or electric fuel pump Upper circle, the bronze colored thing and the tubing or wires hooked to it. A couple of closer up pictures would be good if you're not sure
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Tomahawk
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Posted: March-04-2022 at 9:00pm |
 John Deere green on the top and Grabber green on the bottom. The John Deere green definitely wins in my book.
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flyweed
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Posted: March-01-2022 at 8:43am |
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I wish I could have purchased OEM manifolds that still had the PCM Marine Engines stamped into the manifolds. When I ordered my new ones this past summer they told me that indeed the replacement manifolds were a different manufacturer as well as a different manufacturing process. So whatever that's worth. If my new ones hold up as long as the old ones did, I should be good. (28 years before the old ones rusted and started to leak).
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'93 Ski Nautique NWZ, Air Boom Tower
Drink Tonight..for tomorrow We Ride! |
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KENO
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Posted: March-01-2022 at 8:32am |
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Hope it works out for ya'
Lots of missing pictures in that thread that would have been good for comparison purposes.
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Tomahawk
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Posted: March-01-2022 at 8:24am |
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OK, I will get some Krylon 1932 too. see what matches better. If it matched your 76 then I don't doubt it will work for my 76. I saw your picture from that post and it looks like I will be going that way. I am getting excited for spring. I figure I have a month until the ice out.
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KENO
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Posted: March-01-2022 at 8:11am |
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We can probably come up with a few more terms for those plugs. They've all been used at times over the years
Try some Krylon 1932 if your Grabber Green doesn't match. It's one version of John Deere green and matched my 76 manifolds pretty closely. It's darker than the Grabber Green. Here's a link to an old thread with some discussion and pictures of the green manifolds and some bonus talk about the blue engine color too There were some different shades over the years.
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Tomahawk
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Posted: March-01-2022 at 7:46am |
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Trimming the decal was suggested. It will work and you are right, only I will notice. Still doesn't mean I wouldn't rather spend a lot of time fixing something that no one will ever notice.
Sorry to add another term KENO. I wasn't looking at the post and couldn't think of what they were called. Also as for paint I am going to first try a rattle can of Grabber Green engine paint. I bought it yesterday but didn't have a chance to check it to see how close the color matches.
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fanofccfan
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Posted: March-01-2022 at 7:35am |
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You could trim the stickers to fit around the plugs. Wouldn’t be perfect but not many but yourself would know!
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2004 196 LE Ski 1969 Marauder 19 1978 Ski
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KENO
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Posted: March-01-2022 at 6:19am |
Oh sure...............now we have to call them freeze/frost/casting/core plugs to cover all the bases.  I figure maybe they changed suppliers over the years and/or saw enough instances of manifolds cracked right along the bottom corner and had the plugs added to maybe help with a freeze situation. What are you using to match the original green paint?
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KENO wrote: