REFLECTOR: Franklin Cylinder Removal

[nmflyer1 at aol.com]

make sure you don't have a sticky/cruddy valve. Common problem on a franklin

Kurt 


-----Original Message-----
From: aminetech at bluefrog.com
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Sat, 10 Jan 2009 6:14 am
Subject: Re: REFLECTOR: Franklin Cylinder Removal



Thanks Brian.  I'm aware of the manifold issue, but it's important
and good that you mentioned it.  I'm rethinking to just redo the
bad cylinder(s).  A compression test, with the engine warm, showed
75-80 in all but one.  The #2 initially showed 60.  The mechanic
moved the prop and it went up to 73.  He said that was ok and to
keep flying and checking it.  I'd appreciate any comments on this.

John

--- michalk at awpi.com wrote:

From: Brian Michalk <michalk at awpi.com>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Subject: Re: REFLECTOR: Franklin Cylinder Removal
Date: Thu, 08 Jan 2009 09:24:29 -0600

When reinstalling, you must torque down the intake manifold before 
tightening the attach nuts.  If not, you will crack your cylinders.

If you have a PZL engine, the sleeves are of a different steel alloy.  
They are more difficult to replace and remove, but if your shop uses the 
proper procedure and tools, there isn't a problem.

If you have any questions, the Franklin people in Colorado are pretty 
sharp.  It seems they are doing some volume these days.  Of course A-1 
in Jewett, Texas probably has the most experience.

aminetech at bluefrog.com wrote:
> Looks like I have at least one cylinder with bad rings, so I've 
> decided to have all the cylinder sleeves and rings replaced.
> I've never removed the front two cylinders (# 1 and 2) and it looks 
> like there is not enough lateral clearance with the
> engine in place.  Anyone know the easiest way to remove them?
>  
> Thanks,
>  
> John
> ------------------------------------------------------------------------
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