This is on a Ford 5.8 Ltr with an OMC OD.
Have you cleaned and resurfaced the exhaust manifolds?
The motor was running hot, but only on the port side exhaust and riser. The engine temp as swn on the gage on the dash was right in the middle. On removal, there was rust and a partial blockage in the port water hose from the thermostat. I will definitely replace both risers/elbows and the thermostat. I have already purchased the new ones. I have the exhaust manifolds off the engine block.
I know many people on here prefer the most complete/professional/expensive repairs. They recommend replacing anything that shows much wear.
I have been looking for either new manifolds or for Very Clean, freshwater-only replacements. So far, the best I can find are new manifolds available in December.
I can afford to replace everything if want to, but it would be dumb not to refurbish fully usable manifolds.
Another option was suggested by a boat repair shop that says this is what he would do:
1) Connect up a hose to the manifolds and blast out all the loose rust. (Done)
2) Capture everything that comes out for evaluation (Done)
3) Tap on the manifolds with the water running to loosen more rust (Done, I did not get much more)
4) Soak the manifolds in Evapo-Rust overnight to loosen more. ( I have not done that)
5) Clean them up and inspect ( I have not done that)
6) Take them to a cylinder head resurfacing shop for more cleanup and resurfacing of the gasket mounting surfaces ($80 each) (Not done Is this worth it?)
6A) Or Clean the gasket surfaces up as good as I can. Should I use a file to get them as flat as I can?
7) Have them pressure tested (Not done. Is this worth it? I was not getting any water into the cylinders before.
8) Paint with a high-temperature engine paint
9) Reinstall
I'd like to hear from someone who has done this or something like it.
I really don't want to be told this is a bad idea. I'm sure that many of you would just replace everything for $1500. That is the cost with me doing all the labor. If I can do this for a lot less and a lot sooner. I'd like to try,
Have you cleaned and resurfaced the exhaust manifolds?
The motor was running hot, but only on the port side exhaust and riser. The engine temp as swn on the gage on the dash was right in the middle. On removal, there was rust and a partial blockage in the port water hose from the thermostat. I will definitely replace both risers/elbows and the thermostat. I have already purchased the new ones. I have the exhaust manifolds off the engine block.
I know many people on here prefer the most complete/professional/expensive repairs. They recommend replacing anything that shows much wear.
I have been looking for either new manifolds or for Very Clean, freshwater-only replacements. So far, the best I can find are new manifolds available in December.
I can afford to replace everything if want to, but it would be dumb not to refurbish fully usable manifolds.
Another option was suggested by a boat repair shop that says this is what he would do:
1) Connect up a hose to the manifolds and blast out all the loose rust. (Done)
2) Capture everything that comes out for evaluation (Done)
3) Tap on the manifolds with the water running to loosen more rust (Done, I did not get much more)
4) Soak the manifolds in Evapo-Rust overnight to loosen more. ( I have not done that)
5) Clean them up and inspect ( I have not done that)
6) Take them to a cylinder head resurfacing shop for more cleanup and resurfacing of the gasket mounting surfaces ($80 each) (Not done Is this worth it?)
6A) Or Clean the gasket surfaces up as good as I can. Should I use a file to get them as flat as I can?
7) Have them pressure tested (Not done. Is this worth it? I was not getting any water into the cylinders before.
8) Paint with a high-temperature engine paint
9) Reinstall
I'd like to hear from someone who has done this or something like it.
I really don't want to be told this is a bad idea. I'm sure that many of you would just replace everything for $1500. That is the cost with me doing all the labor. If I can do this for a lot less and a lot sooner. I'd like to try,
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