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All of the above^^^ and pull the spark plugs so you don’t break one when that heavy manifold slips down without your permission. |
If you are looking for a like new set of manifolds/risers I have a buddy that just replaced his with IMCO. His Mercs are like new in/out all fresh water.
I helped him remove so I have personally seen them. Let me know. |
I did remove the plugs and will definitely replace the raw water hoses. All great ideas. I already bought the manifolds and risers but thank you for the offer. I may replace the starter too if that’s easier with the manifolds off which I imagine it would be. Trying to stay ahead of problems done the line but it is a boat. Lol |
While you are there I would also replace the block drain petcocks. I prefer this type as it is almost impossible to get to them but with a 9/16" wrench you can reach them be assured of being able to tighten and loosen. You will need 2 ea. of them.
https://www.ebay.com/itm/Genuine-Mer...-/153107583902 |
I just ordered some for my engine. They are much nicer than a regular steel plug.
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Ok I'm not a mechanic by any stretch of the imagination - I have replaced a manifold on our 7.4 mpi which went very well but that doesn't make me an expert. Just a question - if you are replacing the manifold - the ones that are coming off will be scrap- right? why not just take a saw and cut off as much as you can of the old manifold so that you can get a socket at the bolts that are hard to reach. in other words make room for everything - after all you are throwing the old ones out. Then when it gets time to put the new ones on - start with the bolts that you can get your hand to first and tighten them up. Again I'm not a mechanic and please don't shoot the messenger.
3pointstar |
My 2000 260ss 454 mpi manifolds were mounted with studs & nuts so I used a dremel to cut off the nuts, slide manifold off, back out studs with pliers/vise grips (all came out easy) and replaced all.
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How goes the battle?
How bad are your manifolds/risers? If they have much rot/rust you really need to look at the iron intake manifold. Mine was almost ready to break through just below the thermostat housing, I caught it just in time. Keep us posted and good luck. |
Unfortunately I didn’t have anytime this weekend. Got rained out Saturday and I had too many other house projects today. Hopefully next weekend. Got to get it done before it gets too cold out |
Where are you located?
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