[NSRCA-discussion] engines woes

[Anthony Romano]

All head bolts were tight and the head shim was evenly bright and shiny at 
the mating surface.


>From: "Rick Wallace" <rickwallace45 at hotmail.com>
>Reply-To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>To: nsrca-discussion at lists.nsrca.org
>Subject: Re: [NSRCA-discussion] engines woes
>Date: Tue, 25 Jul 2006 17:37:09 -0400
>
>
>
>Maybe head gasket? any sign of dark path all the way across either the 
>brass gasket, or the head or liner mating surface?
>
>
>
> 
>
>
>
>
>From:  "Anthony Romano" <anthonyr105 at hotmail.com>
>Reply-To:  NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>To:  nsrca-discussion at lists.nsrca.org
>Subject:  [NSRCA-discussion] engines woes
>Date:  Tue, 25 Jul 2006 17:11:59 -0400
> >Having some trouble with my RX having an erratic idle and an appetite for
> >glow plugs before the Nats. Replace both bearings that seemed perfect, as
> >was the rest of the internals, and cleaned some carbon of the piston 
>before
> >the Nats. Idled and ran better but was a little tight on the next run. 
>This
> >seemed to improve quickly as the bearing seals seated but down on power.
> >Got to Muncie and was a bit down on power. After ingesting another plug 
>from
> >over twisting the needles I was given a
>remedial needle valve lesson by Ron
> >Lockhart and switched to 30% Nitro. Made it through the Nats without much
> >power.
> >Today went to back to 20% for the lower heat and made sure I had the 
>needle
> >set 7600 rpm launch from a 7800 rpm peak on a pinch. When taxiing it 
>loaded
> >up and quit and wouldn't restart. Another new plug and double check the
> >needle and made a weak flight. Second flight same thing but this time got 
>it
> >restarted without replacing the plug.
> >Now here is the interesting part. This engine has always had a lot of 
>fuel
> >gooped on the head and header. Today noticed a lot on the bottom of the
> >plane. I am thinking either a bad ring or some damage to the crank port 
>or
> >the case. Any other ideas?
> >
> >OS 1.40 RX
> >SS bearings
> >Aeroslave pipe 25.25 from baffle to plug
> >15.75*10*3
>APC
> >20% S&W fuel
> >OS type F
> >
> >Can't afford to change to other power source so any ideas on this one 
>would
> >be helpful.
> >
> >TIA
> >
> >Anthony
> >
> >
> >_______________________________________________
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> >NSRCA-discussion at lists.nsrca.org
> >http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>
>


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