Cooling water intake hoses for 454 engines

tmh

Lieutenant Junior Grade
Joined
Aug 16, 2006
Messages
1,136
OK, ready to put my restored 1988 Cruisers Inc. 3370 back in the water after I think 6-7 year on land. Previous owner spent a ton and never got the drives working right. I just finished getting that done, seems to run fine now going to launch. Totally rebuilt engines, and trimmings, etc.

So, the marine mechanic who did the drives for us said I'd be better off bypassing the inboard water strainers because they are old and untested - he also is concerned that they are above the water line but I think that's OK. Also no gasket seal left as best I can tell. He says in our part of Lake Ontario they really aren't needed and each intake has a strainer on the hull intake. He had the hoses off after the strainers to put the garden hose in to run the engines. My son and I are finishing the plumbing now.

Now, IF we bypass the strainers, we have two options. One way is to just turn the seacock valve about 50 deg. and it would fit right to the strainer outlet hose - easy. However, it was a salt water boat and sat for many year, soI have a fear that when I try to wrench that valve i could break something! I did spray penetrating oil on it yesterday in case I go this route today. Can the valve be turned 50 deg. without leaking? Any tips?

Option 2 is to just add a hose and nipple to connect to the existing intake hose. We tried this yesterday, but too short a hose so we had to bend it too sharply and it leaked - too tight a bend radius. If we get maybe an 8 foot hose we can put it in so as to have a much larger bend radius. This adds 8 feet to the intake, and could be hard to keep under the waterline completely (although I have no idea how to tell where the WL is from in the engine compartment).

Thoughts?
 
Joined
Jun 5, 2009
Messages
12
Re: Cooling water intake hoses for 454 engines

These boats vary in their mechanicals and plumbing from year to year and boat to boat. Cruisers went out of business. The current Cruisers company does not support the older boats well.

You said you are on Lake Ontario. As it happens, there is one in excellent condition near you. Perhaps the easiest way to fix yours is to check this guy's out. Take a camera and and a video camera.

I hope this helps.

http://www.iboats.com/cgi-bin/marine_classifieds/adv-search.cgi?id=549494
 

jtybt

Senior Chief Petty Officer
Joined
Aug 5, 2009
Messages
730
Re: Cooling water intake hoses for 454 engines

I have a '78(trailered) so not berthed but the boat never had a strainer or even a seacock. I just added an oil cooler and ran into the same problem as you. I re positioned the raw water pick-up about 5 ". The motor was out of the boat at the time, though.

Oh yeah, I used an auto pre-formed right angle to make the bend. With a drive AND thru hull water pick-up, there's much less likely of collapsing either intake hoses.
 
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