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Date: Thu, 29 Jan 2004 16:19:54 -0500
From: echristley@nc.rr.com
Subject: Re: [FlyRotary] Cruddy water passages
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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----- Original Message -----
From: Finn Lassen <finnlassen@netzero.net>
Date: Thursday, January 29, 2004 2:03 pm
Subject: [FlyRotary] Cruddy water passages

> I've started to clean the 13B that I got out of junk yard car some 
> 7 
> years ago.
> 
> I'm amazed at the amount of crud (scale, rust, etc.) there are in 
> the 
> water passages.
> 
> When I overhauled my first junkyard engine, I didn't pay much 
> attention 
> to the water passages in the end and center housings. They are not 
> all 
> that easy to get to as they pass beneath the side surfaces.
> 
> For quite a while now I've been puzzled why my left radiator only 
> flows 
> 1/10th of the right radiator, and thus runs very cold. But when I 
> first 
> ran the engine it was just a hot as the right rad. So, I think 
> it's 
> possible that some scale or flakes broke loose from the water 
> passages 
> and jammed in the small pasasages in the radiator.
> 
> Of course I'm going to try to clean the current engine as best I 
> can 
> (any suggestions on how to get to those passages are welcome), and 
> I 
> might just run the engine for some time without the rads - simply 
> connecting a hose from a water post to the pump inlet and thus 
> flush it 
> while it runs.
> 
> But I'd like any suggestions of suitable filters to put in line 
> with the 
> hoses from the engine to the rads. Does not have to be very fine - 
> just 
> enougth to stop particles that could get caught in my new rads.
> 
> Finn
> 
> 

1) Run some water through the rads, backwards to flush trash.
2) Put a bottle low in the system.  dump water in the top and pick it up out of the top.  The water should slow and the sediment drop out.