I had my heads off a few years ago to put new springs & valves and to
just clean things up after 484 hours since new. As everyone knows I
think, I bought my KR from Steve Bennett so of course it had his 2180.
Three years or so after I got the plane from Steve I had what I thought
was a valve fai
1.com
-Original Message-
From: KRnet On Behalf Of Samuel Spanovich via
KRnet
Sent: Sunday, March 31, 2019 3:11 PM
To: krnet@list.krnet.org
Cc: Samuel Spanovich
Subject: KR> Cylinder Heads Cracked - Best brand - Revmaster 2100d
If some of you remember I posted a while ago regarding a &
Sorrya misfire on my part. Let me try that again.
If you had carbon "everywhere", then more than likely the engine was
detonating badly due to reduced compression chamber volume, and perhaps
pre-ignition from glowing carbon deposits. Your low compression on that
cylinder could very well be
Samuel Spanovich wrote:
> 1)What is a good replacement cylinder head? (stock valves and 14mm
> dual spark plugs if able)
>
> 2)What type of heads are you guys running?
If you had carbon "everywhere", then more than likely the engine was
detonating badly. As you know, the crack between
If some of you remember I posted a while ago regarding a "chugging" problem
with my Revmaster 2100d ("Calling All Revmaster Owners"). I have been
hesitant to report back on here without a clear answer to what was wrong
because I didn't want to waste anybody's time posting until I had a
definite an
eresting to see how your DPD heads hold up.
Roger Bulla
rbulla2 at wic.net
-Original Message-
From: Mark Langford via KRnet
Sent: Tuesday, July 19, 2016 7:15 AM
To: KRnet
Cc: ml at n56ml.com
Subject: Re: KR> Cylinder Heads Again
___
Search the K
Roger said,
"I have rebuilt the old 044 heads with new valve guides and new 214NSS
stainless valves from CBP and recut the valve seats with a Neway cutter"
The worn guides, wear and tear on the valves and retainers on the
original heads sure says a lot about how important it is to go through
an
Hi Mark,
I had high temps on my Revmaster -didn't know what all-so I fitted an
adjustable outlet flap to the lower cowling, I fitted a new spring to the
pressure relief valve (don't ask -a VW specialist advised me). Fitted a VW
oil cooler to the top side.
Had an ex RAF test pilot to do the checks
ore the leak goes away. Maybe a
sticky valve guide?
It will be interesting to see how your DPD heads hold up.
Roger Bulla
rbulla2 at wic.net
-Original Message-
From: Mark Langford via KRnet
Sent: Tuesday, July 19, 2016 7:15 AM
To: KRnet
Cc: ml at n56ml.com
Subject: Re: KR> Cylinder Heads Again
Has anyone tried these heads from CB Performance? They look like they have
better air flow around the exhaust ports and maybe better quality control?
http://www.cbperformance.com/Panchito-044-Cylinder-Heads-90-5-92-Bore-p/1672.htm
Roger Bulla
rbulla2 at wic.net
Roger Bulla wrote:
> Has anyone tried these heads from CB Performance? They look like they have
> better air flow around the exhaust ports and maybe better quality control?<
Looks like maybe they have swapped to the "Chinese castings", which are
improved over the CB 044 heads that came on N891JF
> Running an engine to rich does not burn valves.
Well, without putting too much of a point on it, you're quite wrong.
Running rich not only creates deposits that get lodged between the valve
faces and seats and allow the combustion gasses to blow through and burn
the metal, but these deposits
I previously posted a comment on this regarding "Isn't this a sign of running
to
lean"
Now, I know there are others on here who know more than me about engines.My
experience is mostly working on high performance racing engines,years ago with
a
professional international racing team, and als
> I still think a cylinder head recondition and 2 exhaust valves at 250
hours for only $200 is pretty good.
As far as cost goes, that is pretty good. I guess. Did you have it all
apart and just replace the two burned valves?
Burning exhaust valves at 250 hours . . . or at any number of hours .
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