- Oct 6, 2006
- 12,157
- Boat Info
- 1996 450DA
- Engines
- 3116 Caterpillars
SeaNile,
First, you cannot compare A/C water flow with other boats unless they are Sea Ray 450DA with the same cabin layout as yours. Pumps could be different, their cooling lines may be clean, the plumbing layout is likely different, etc. ....just too many variables to list.
Your boat should have a March pump on it and they are generally low pressure high volume pumps. You should have constant steady water flow from both thru hulls, but the 450 isn't going to and shouldn't look like a " hose with a nozzle on it."
If you doubt the flow or pressure then the first place to start is by cleaning the cooling lines with phosphoric (Never muriatic!) acid unless the system is completely blocked. I've written the procedure up and posted it on CSR several times but if you can't find it, I'll do it again after the weekend.
First, you cannot compare A/C water flow with other boats unless they are Sea Ray 450DA with the same cabin layout as yours. Pumps could be different, their cooling lines may be clean, the plumbing layout is likely different, etc. ....just too many variables to list.
Your boat should have a March pump on it and they are generally low pressure high volume pumps. You should have constant steady water flow from both thru hulls, but the 450 isn't going to and shouldn't look like a " hose with a nozzle on it."
If you doubt the flow or pressure then the first place to start is by cleaning the cooling lines with phosphoric (Never muriatic!) acid unless the system is completely blocked. I've written the procedure up and posted it on CSR several times but if you can't find it, I'll do it again after the weekend.