MolineGB1997
New User
Hey all and good evening. I recently picked up a GB gas as a restoration project. It's in generally good shape, but needs motorwork as it sat outside for the last few months.
The front two cylinders are in good shape. The rear two not so much. The pistons seem ok but the cylinder block is fairly crusty on the inside.
This engine has been bored to 4.75 and appears to not have many hours on that overhaul. Pistons look like new. If I need to, how much more can I bore out these blocks safely? I've read that they can be sleeved, would save my good pistons but I'm not sure what that would cost and if it's worth it. I'm not looking to get crazy power, I just want to get it running as it should.
Bonus question: will UB exhaust and intake manifolds work on a 403? The exhaust manifold on this tractor is fubar and they seem to be hard to find.
Thanks in advance!
The front two cylinders are in good shape. The rear two not so much. The pistons seem ok but the cylinder block is fairly crusty on the inside.
This engine has been bored to 4.75 and appears to not have many hours on that overhaul. Pistons look like new. If I need to, how much more can I bore out these blocks safely? I've read that they can be sleeved, would save my good pistons but I'm not sure what that would cost and if it's worth it. I'm not looking to get crazy power, I just want to get it running as it should.
Bonus question: will UB exhaust and intake manifolds work on a 403? The exhaust manifold on this tractor is fubar and they seem to be hard to find.
Thanks in advance!