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  1. Blueghost924

    Mercruiser 470 - heat exchanger removal

    With the old Mercruiser 470 heat exchangers, has anyone every had it be almost impossible to get a socket into that recessed center nut? The 2 outer left and right ones are a breeze. I thought about removing the left and right clamps to see if the heat exchanger itself can be taken off the...
  2. Blueghost924

    Testing electrical components in 1986 21 CC boat without engine installed

    Hi, I don't have my motor (1982 Mercruiser 470) installed in my 1986 CC Renken boat quite yet. I have a strong deep cycle marine battery that I was wondering if I could hook up to the electrical plug (that normally plugs into the motor) to test some of the electrical accessories on the boat...
  3. Blueghost924

    Replacing disc brakes - is this the old seal left behind?

    I've taken off the old rusted out hulk of the old drum brakes that were on the trailer when I bought it. In the picture, hopefully you can see that there's a metallic gold band still on the axle towards the square flange. I believe this is the old brake seal, and not actually part of the axle...
  4. Blueghost924

    Need to have boat trailer inspected - Virginia - can't find VIN serial numbers

    I live in the good ol state of Virginia, and I'll soon be ready to have my trailer inspected (just put on disc brakes). I can't seem to find the trailer VIN serial number anywhere on it. The title shows it to be a make called "MATI" with the year 1985. This being Virginia, everything is...
  5. Blueghost924

    Tie Down disc brakes - how do they assembly?

    I was practically given a set of disc brakes by a friend of a friend who was moving and didn't need them. He gave them to me in a box, and they appear to be in good shape. The calipers say "Tie Down Engineering" on them. My question is how a couple of the parts get assembled on to the axle...
  6. Blueghost924

    1982 Mercruiser 470 - low compression

    As a couple of folks know, I've been trying to get my 1982 Mercruiser 470 up and running. A couple of months ago, I performed a compression test on all 4 cylinders and came up with numbers greater than 100 psi. Tonight I was thinking that I may have not performed the test exactly as outlined...
  7. Blueghost924

    Mercruiser 3.0 installed instead of Mercruiser 4740?

    Hi, As a couple of folks know, I'm still trying to get my 1982 Mercruiser 470 running. A guy is selling a Mercruiser 3.0 1996 that runs just fine for a decent price. My boat is a 21 foot Renken cuddy cabin designed for the Mercruiser 470. Thoughts about trying to put the 3.0 in my boat...
  8. Blueghost924

    1982 Mercruiser 470...what are these wires for or go to?

    Hi, I have a 1982 Mercruiser 470. There are 2 pairs of wires in the back that I'm curious about. 1. The first set are 2 wires with round terminal ends in the back above the coupler; one is a black wire and one is actually 2 greyish/greenish wires together ending in one round terminal. The...
  9. Blueghost924

    Spark plug wires on correctly?? - Mercruiser 470 3.7 L

    Hi, I have a 1982 Mercruiser 470 that is not currently installed in my boat (it's in the garage). The spark plugs and wires were old and off when I bought the engine, so I bought a new set (wires and plugs). The other problem is that the guy I bought it from had a friend who had loosen the...
  10. Blueghost924

    Mercruiser 470 3.7 L shift plate & neutral safety switch - where does it install?

    I have a 1983 Mercruiser 470 3.7 L, and I have a real newbie question. Where does the shift plate/neutral safety switch assembly install at? On the engine? I bought my Mercruiser 470 engine separate from my boat (and will be installing the engine soon). On a related note (I think), the...
  11. Blueghost924

    Mercruiser 470 engine out of the boat...how to start?

    Hi, I have a Mercruiser 470 (3.7) 1982'ish engine that's currently not installed in my boat (it's on a pallet in the garage). The reason it's not installed is because I bought it from a local shop and haven't put it in the boat yet. Anyway, I want to perform some minor tuneup and maintenance...
  12. Blueghost924

    Switching tire sizes on trailer...ok?

    Hi I have size 205 x 75 tires on 14 inch rims on my 22 foot trailer right now. 2 need to be replaced. I've seen an ad for someone selling size a set of four 175 x 80 tires on 13 inch rims. Do you think it would be ok to replace all 4 tires with this smaller size as long as I do all of them?
  13. Blueghost924

    Which outdrive will fit my motor?

    Hi, I have a 4 cylinder Mercruiser 470 3.7L engine. I currently don't have an outdrive, but which models will fit my engine? I was thinking the 80s Alpha 1 gen 1 or 2. Thanks.
  14. Blueghost924

    How to tell if upper unit of outdrive is worth the buy

    Hi, I need a Mercruiser outdrive for my boat, and I did see an ad on Craigslist where a gentleman is selling both an upper and lower unit. He said that the lower unit is in great shape, but the upper unit is in not so great shape. How can I meet with him, look at the upper unit and tell if the...
  15. Blueghost924

    Buying a potential Mercruiser 470 ...slow to turn over ??

    Hi, I have a 1987 21 foot Renken that I bought recently, and I'm looking to replace the Mercruiser 470 4-cylinder engine that's in it. The manager of a local chemical shop, who is also a boat owner, recently removed an entire Mercruiser 470 170 HP from his boat that would be a perfect match for...
  16. Blueghost924

    Bought 1987 Renken with 3.7L Mercruiser - worth keeping?

    Hi, I'm new to IBoats and kinda new to boat ownership. I recently bought a 1987 Renken 21' boat that has the 3.7L Mercruiser inboard installed still. From all looks, the block is pretty well intact. The head and valve cover are attached. The intake and exhausts of the head are rusty. Also...
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