Hello all, .
Manifolds started to crack and leak water between the center cylinders and tried to have them repaired thru some local advice. Now they leak worse, I now know I have to purchase new. I have been doing some searching for parts and know what manifolds I need. Attaching some photos to view. I would like to know if I should purchase new risers and end caps. I know I'll need gaskets and block off plate as well as studs,washers,nuts,bolts.
As you'll see in 1 of the riser pictures, I have taken 2 picture of with the block off plate laying both ways. I did not notice the small hole in the plate when I took it off. Which way does it go so I install the correct way? What site would be the best and cheapest to purchase from, And would this site likely just have the whole kit with everything I need? Is the sterndrive tag on the valve (see pic) cover considered the serial #?
By the way, I have had the boat since 1995 and have always drained the block,manifolds,etc and refilled with antifreeze and have replaced the lower unit impellar (we only put about 30 to 40 hrs of run time a year on it) every couple of years whether it needs replaced or not. Several years ago my temp gauge start showing around 170 to 180 and it used to normally show 150. I had just replaced the impellar that year prior to the boating season, So I pulled the water pump from the motor and inspected and replaced. I next swapped the temp gauge with and identical gauge from my buddy's boat. Temp showed (150) normal. So I knew my gauge was reading above normal and has been consistently that way since. thermostat (142) has since been replaced.
I estimate the boat has about 800ish hrs of run time on the motor since I've had it.
Also do I need to repaint the port surfaces on the heads before installing new manifolds?
Sorry for such a long post, But I want to get things right this time and money is tight
Here is the link to pictures:
http://smg.photobucket.com/albums/v3...%20mercruiser/
Manifolds started to crack and leak water between the center cylinders and tried to have them repaired thru some local advice. Now they leak worse, I now know I have to purchase new. I have been doing some searching for parts and know what manifolds I need. Attaching some photos to view. I would like to know if I should purchase new risers and end caps. I know I'll need gaskets and block off plate as well as studs,washers,nuts,bolts.
As you'll see in 1 of the riser pictures, I have taken 2 picture of with the block off plate laying both ways. I did not notice the small hole in the plate when I took it off. Which way does it go so I install the correct way? What site would be the best and cheapest to purchase from, And would this site likely just have the whole kit with everything I need? Is the sterndrive tag on the valve (see pic) cover considered the serial #?
By the way, I have had the boat since 1995 and have always drained the block,manifolds,etc and refilled with antifreeze and have replaced the lower unit impellar (we only put about 30 to 40 hrs of run time a year on it) every couple of years whether it needs replaced or not. Several years ago my temp gauge start showing around 170 to 180 and it used to normally show 150. I had just replaced the impellar that year prior to the boating season, So I pulled the water pump from the motor and inspected and replaced. I next swapped the temp gauge with and identical gauge from my buddy's boat. Temp showed (150) normal. So I knew my gauge was reading above normal and has been consistently that way since. thermostat (142) has since been replaced.
I estimate the boat has about 800ish hrs of run time on the motor since I've had it.
Also do I need to repaint the port surfaces on the heads before installing new manifolds?
Sorry for such a long post, But I want to get things right this time and money is tight
Here is the link to pictures:
http://smg.photobucket.com/albums/v3...%20mercruiser/
