Purchase of used 1981 SECA XJ750

I happened to see a used 1981 Seca XJ750 for sale with only 32,000KM on it. I decided to go see it, and it turn out that the engine started, however it could not  keep its idle when cold. Seing the engine was good, I purchased the motorcycle for only $300 Canadian!

When I brought it home in my garage, I started right away to take it apart. Within 24hrs, I had the engine pulled out. One thing I found, was 2 BOOTS,between the carburators and the Intake, were cracked, which would explain the reason why the engine would not keep its idle when cold.

This is the crack that made the bike stall when idling when cold.

The engine while still in the frame.

Hard to believe the engine is out!

This will make a nice parts bike for my 1983 Midnight Maxim engine!

I will sell some of the parts on EBay to recover some $$$.

Sandblasting - preparation & after

The Mid section removal

This was fun to do, but very slowly, not to scratch the cylinders, or to brake off the air fin's on the block. It well well..............

Engine being taking apart in pieces

This was the fun part, to see the interior of the engine. Once inside, the current condition would make the final decision to either abort the rebuilt project because of cost, or continue on!
It turned out that the two cylinders on the left side had a lot of carbon, however no sign of corrossion.

Once I was able to slowly remove the cylinder head and mid sections, i discovered that it was in a condition that was good. The only sign of concern, was one cylinder had surface rust a little on one area. However, depending on the measurements once a gauge is used, i will either hone it down, or rebore it completely.

The valves seems rusted, so will try to get them out with a closer look. Tried to remove them with a C-CLAMP, however no luck. Will need to bring to a machine shop to remove them i think.

Tomorow i will be sandblasting the top-end. Tonight i put masking tape on all exposed ports and internal points before the sandblasting starts.