boatrboy
Well-Known Member
The plot thickens.
So the Sierra pump’s center hose fitting is larger than the Mercruiser.
It’s not much but enough to not allow the crossover tube to sit over it without some modification (open the hole by about 0.040”). The hole is shown with the picture that had the broken bolts.
Basically the crossover tube holds a flange type seal and the water pump slides inside of it. You can see the two pumps side by side and the Sierra won’t enter as the hole is about 0.040 too small.
I was at the boat so I hand sanded the hole to allow the port motor to go together. Now the stbd is apart and of course the flange bolts are stuck as is one of the thermostat bolts in the crossover tube. So back to the shop we go to get the bolts out of the stbd side.
I guess I should have bought the merc pumps, but this mod isn’t too bad.
If you have trouble getting the the pump and crossover tube together, hopefully this post will help.
So the Sierra pump’s center hose fitting is larger than the Mercruiser.
It’s not much but enough to not allow the crossover tube to sit over it without some modification (open the hole by about 0.040”). The hole is shown with the picture that had the broken bolts.
Basically the crossover tube holds a flange type seal and the water pump slides inside of it. You can see the two pumps side by side and the Sierra won’t enter as the hole is about 0.040 too small.
I was at the boat so I hand sanded the hole to allow the port motor to go together. Now the stbd is apart and of course the flange bolts are stuck as is one of the thermostat bolts in the crossover tube. So back to the shop we go to get the bolts out of the stbd side.
I guess I should have bought the merc pumps, but this mod isn’t too bad.
If you have trouble getting the the pump and crossover tube together, hopefully this post will help.