--> Europa-List message posted by: Pete <peterz@zutrasoft.com>
Are these the sleeved ones? Or the “ball joint” looking rounded seal? I have
the latter on my classic, and eliminated all my leaks by using genuine Honda
motorcycle copper exhaust gaskets.
Cheers,
PeteZ
> On Jan 5, 2024, at 11:18 AM, n7188u <chmgarb@gmail.com> wrote:
>
> --> Europa-List message posted by: "n7188u" <chmgarb@gmail.com>
>
> Hello Europa Family,
>
> First of all Happy New Year together with hopes of a great year 2024! I also
> hope you had enjoyable holidays (I did have a very special one, which
> included a Europa related activity, and I will an expand on a following
> posting).
>
> The reason for my posting today is that I’ve been having a slight exhaust
> leak through the #4 cylinder head joint to the manifold. I had this leak on
> my old engine and again on my new one so I can safely assume it is related to
> either pipe alignment or warped mating surface at the pipe. My other three
> pipes are not leaking. So far I have realigned the pipe multiple time to try
> to improve the seating of the manifold on the head with no success. I am
> afraid that if it continues like this it will eventually damage the head
> sealing surface.
>
> I am sure that if CKT was still around I could talk to them and solve this
> issue (I should have done that earlier) but so it’s life. Anyone in the forum
> had this issue and resolved it hopefully without requiring new parts?
>
> What occurs to me as possible solutions:
>
> 1.- Check if the mating surface in the joint is not warped (no idea yet how)
> and correct it (also no idea how).
> 2.- If the joint is not bad, lap the joint.
> 3.- Use an exhaust system sealant. Heide at CKT once recommended Hylomar EAP5
> for the slight leak at the slip joint in the #1 cylinder pipe. I would think
> this could help but only short term as this joint probably moves a little.
> 4.- I read in the Rotax-Owner forum that CKT would sometimes recommend a
> sleeve to be placed in the joint (I think this is for a seriously worn
> cylinder mating surface). It would be nice if some sort of soft gasket
> existed for this joint.
>
> I will check on the Rotax maintenance documentation but does anyone know what
> the specification is for the cylinder head exhaust port joint mating surface.
> I would think that the exhaust one should be slightly spherical to allow some
> misalignment. A lapping tool could be created to rectify the surface on the
> pipe but that could get expensive (I wish I still had my machine shop).
>
> Anyway, I will await for our valued opinions on this subject.
>
> Chris
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=513018#513018
>
>
>
>
>
>
>
>
>
_-============================================================
_-= - The Europa-List Email Forum -
_-= Use the Matronics List Features Navigator to browse
_-= the many List utilities such as List Un/Subscription,
_-= Archive Search & Download, 7-Day Browse, Chat, FAQ,
_-= Photoshare, and much much more:
_-=
_-= --> http://www.matronics.com/Navigator?Europa-List
_-=
_-============================================================
_-= - MATRONICS WEB FORUMS -
_-= Same great content also available via the Web Forums!
_-=
_-= --> http://forums.matronics.com
_-=
_-============================================================
_-= - NEW MATRONICS LIST WIKI -
_-= Add some info to the Matronics Email List Wiki!
_-= --> http://wiki.matronics.com
_-============================================================
_-= - List Contribution Web Site -
_-= Thank you for your generous support!
_-= -Matt Dralle, List Admin.
_-= --> https://matronics.com/contribution
_-============================================================
|