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-   -   FL 120 water pipe replacement (http://www.trawlerforum.com/forums/s6/fl-120-water-pipe-replacement-9227.html)

meridian 03-07-2013 06:17 PM

FL 120 water pipe replacement
 
As I'm replacing all my cooling hoses on my FL 120, I noticed that the 2 pipes that run along the starboard side of the engine could use replacement after 30 years. I took them to the local muffler shop. 10 minutes and $15 later I had a new set. Good deal!

Northern Spy 03-07-2013 06:34 PM

Quote:

Originally Posted by meridian (Post 139993)
As I'm replacing all my cooling hoses on my FL 120, I noticed that the 2 pipes that run along the starboard side of the engine could use replacement after 30 years. I took them to the local muffler shop. 10 minutes and $15 later I had a new set. Good deal!

Curious. Is this freshwater or seawater service? Did you use carbon steel or stainless steel?

meridian 03-07-2013 07:18 PM

This is the internal system filled with antifreeze. Carbon steel.

RT Firefly 03-07-2013 07:52 PM

Greetings,
Mr. meridian. Did you notice any deterioration in the old pipes at all or was this a "why not replace" situation?

meridian 03-07-2013 08:16 PM

Large rust nodules on the inside, crevice corrosion where the hoses are clamped on. I believe the hoses are original. I’ll be sure to do a thorough block flush.

BruceK 03-07-2013 09:29 PM

Quote:

Originally Posted by meridian (Post 140029)
Large rust nodules on the inside, crevice corrosion where the hoses are clamped on. I believe the hoses are original. I’ll be sure to do a thorough block flush.

I need to do that on one engine,I bought some proprietary stuff to do it, says to put it in,run engine 20 mins, cool and drain. I`m thinking a second flush with just water before replacing the coolant, about 20L/quarts on a Lehman.
Can you let us know how it goes, and the lowest point you find to drain from?

FF 03-08-2013 05:18 AM

"I’ll be sure to do a thorough block flush.

"
Penray - PREVENTING COOLING SYSTEM PROBLEMS


After you fill and drain be sure to use antifreeze with DISTILLED water ONLY!

meridian 03-08-2013 07:16 AM

When I belonged to the local Model-A club, we would clean out 75 year old blocks using, among others, dissolved dish washer detergent, run it till it's hot, then flush.

FF 03-09-2013 06:14 AM

dissolved dish washer detergent, run it till it's hot, then flush.

TSP

meridian 03-09-2013 08:25 AM

TSP even better. Thanks

FF 03-10-2013 06:31 AM

TSP is "illegal" in some places , but the gals would raise He** if some politico messed with the dishwasher !

So TSP is in most dish washing soaps , so easy to find in "prohibited" areas.


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