Rick,
I=92ve installed them on one Europa. A bit noisy and snarly sounding but n
o detrimental affect that I could see other than they need to have a three
to one to about a 1.25 inch pipe with slightly bent and shaped exit pipes t
o go between the foot wells. They are less fun if you run them down throug
h the cowl bottom as getting the cowl on and off a trigear gets to be a pai
n.
I ended up putting the muffler back on this plane with a proper carb heat s
hield over the muffler. Reason was it was a bit quieter. The Sonex communi
ty has quite a few with the straight pipes as they can=92t fit much in that
cowl. Some builders have a full manifold made and throw the Jabiru pipes
away. They also have some issues with exhaust leaks at the head as a solid
pipe tends to hang pretty hard off those small 6mm bolts and getting the f
lange sealed and keeping it sealed after welding is a bit of a challenge as
the pipes move during welding. I=92ve only helped one Sonex with his 80 H
P Jab/Sonex straight pipes and it is quieter than the 6 banger Zenith I hel
ped with. The Zenith uses a Sonex supplied exhaust which had a transition
pipe from the manifolds. The exhaust pipe fit is not very good at the 3 to
one. I had to crimp the ends of the pipe and seal with Permatex Exhaust s
ealant. Later a better metal to metal seal was supplied by Zenith I think,
may have been Jabiru.
Notes: I use that Permatex exhaust sealant now on the Europa older CKT exh
aust without the nice round sockets for the muffler to pipe seal. It works
for a couple of years on the CKTs. Exhaust leaks on some of these down pi
pe to mufflers, must be sealed or many odd inflight problems occur due to e
xhaust jets hitting carbs, sensors, oil/cooler lines etc. On the Jabiru thr
ee to one, you may find it better to get it all fit then have it welded aft
er getting the bends right.
If you have the welded Jabiru supplied muffler, I find them quite good. If
you have the riveted one, it is pretty much a piece of junk. They leak ba
dly and the Jabiru experimental community has had many issues. It is best
to replace those junky ones and a straight pipe may be the best solution.
Certainly lighter and the exhaust to head fit seems easier to get leak fre
e if time is spent getting the angles right.
Best Regards,
Bud Yerly
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s 10
________________________________
From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr
onics.com> on behalf of AirEupora <AirEupora@sbcglobal.net>
Sent: Wednesday, May 23, 2018 11:02:54 AM
Subject: Europa-List: Europa with a Jabiru engine
I'm wondering if anybody has installed a Jabiru with straight pipes. This
weekend my muffler outlet fell off the plane while flying. I'd like to put
straight pipes on it, but the foot wells might make it a little difficult
to route them over board.
If some has straight pipes, would you contact me off line.
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