• J3-Cub.com is the largest community of J3-Cub pilots, owners and enthusiasts. With over 1000 active members, we have fostered a vibrant community and extensive knowledge base. J3-Cub.com hosts a library of over 13 years of technical discussions, J3 data, tutorials, plane builds, guides, technical manuals and more. J3-Cub.com also hosts an extensive library of J3-Cub photos.

    Access to the J3-Cub.com community is by subscription only. Membership is only $49.99/year or $6.99/month to gain access to this community and extensive unmatched library of knowledge.

    Click Here to Become a Subscribing Member

Problem removing exhaust

ab0ngcd

Well-Known Member
Supporting Member
Joined
Jan 7, 2020
Messages
54
Reaction score
11
When the engine builder installed the engine , C85-12, PA-11, he goofed up one of the exhaust gaskets on #3 cylinder. As he was installing the exhaust manifold, one of the 2 gaskets fell partially out so only 1 mounting hole was on the stud an the gasket was rotated about 60 degrees and partially blocking the exhaust port. Manifold/stack.

I was able to lower the exhaust but even with the nuts off, I cannot lower the exhaust manifold enough to get the manifold to clear the studs to replace the gasket. I was able to cut the damaged gasket blocking the port and remove it, but I cannot install a replacement gasket.

It looks like the intake manifold on cylinder #1 is keeping the exgaust manifold from dropping the additional 1/8 inch. I am reluctant to drop the intake elbows in that I may then have to replace the intake port gaskets as well as all the rubber tubes on intake system as the are at least 10 years old.

Any suggestions on how to lower the exhaust manifold/stack that last 1/4 inch?
 

Latest posts

Top