----- 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.