What Size ID Raw Water Intake?

[Tcheairs]

Before I start cutting hoses to install a Perko inline flush kit (for winterizing with antifreeze), does anyone know what size inside diameter my raw water pump for a 1986 Crusader 7.4 454 (closed cooling) engine would use? At the thru hull shutoff valve I can see clearly that it's smaller than other 1 1/2" hoses used elsewhere in the system, so my guess is that it is a 1" ID hose or a 1 1/4" ID hose. The crusader parts manual which I have is of no help. This operation will be done with the boat in the water. Thanks.

 

[dhays]

You may be able to identify the ID by using the OD. Helps to know the type of hose and manufacturer if you can identify that.

I just replaced my hoses. I found that it was a lot easier to remove the hose without cutting than I anticipated. (Not easy, but a whole lot easier than I thought). I was able to remove one end of the existing hose to measure the barbed fitting it was on. I was then able to replace the hose on that fitting and order the new hose I needed. TFers gave great advice on how to remove the hose.

Thread 'Help with removing raw water intake hoses.' Help with removing raw water intake hoses.

 

[Tcheairs]

Thanks for the reply. The link to hose removal does not work..I'll search YouTube..

 

[dhays]

Thanks for the reply. The link to hose removal does not work..I'll search YouTube..

I edited the link, try that.

 

[Tcheairs]

It works...great information..thanks

 

[kapnd]

The ID of the seacock is the limiting factor, if it’s 1” or 1 1/4, increasing hose size beyond that will do nothing.

 

[Tcheairs]

Raw water pump is a Sherwood E-35. 1" inlet and outlet..detective work complete!
Thanks for all of the responses and sugestions.