Super Jet Sj 1200

[mybad]

Modified hood by removing extinguisher recess to clear exhaust chamber. I will glass over to reinforce and seal.

 

[mybad]

Completely rebuilt the carbs. Changed the N&S from 1.2 to 1.5. Returned jetting to factory specs. Installed new fuel lines. Drilled out the 3 carb restrictors and installed 1 in the return line. That will help balance the fuel pressure in all carbs. Installed a throttle bracket close to oem specs and straightened out the throttle cable for a straight pull. Works perfect.

 

[tshank123]

Looking good so far. Did you ever figure out the exhaust transition?

 

[mybad]

A friend texted me pictures of his exhaust transition. I combined the two together and have a solution. I will install it during final assembly.

 

[mybad]

Added wire reinforcement to the hood cut out. Will drop resin and glass on it tomorrow. Added (4) 3/8 bypasses. 3 for the head. 1 for the pipe.

 

[mybad]

Modified the oem manifold. Reduced the width and created extra clearance for the exhaust transition. Lengthened the bolt threads then cut down to 4-3/8". Split cooling inputs x2.

 

[tshank123]

Good idea. Looks pretty trick now.

 

[mybad]

My fiberglass hack job. Its strong, but ugly. Will grind a little and then smooth over with filler. Whats the best to use?

 

[Texan33]

Microballoon! This is a cool project!

 

[mybad]

Delete

 

[tshank123]

^^^Good choice. I used 404 filler for a project. Holy crap, sanding was horrible. If you dont need a lot of strength, stay away from the 404.

 

[JJacobsen87]

awesome build!

 

[mybad]

Tshank. Sanding sucks. 10 hours. Its perfect. I have 2 part primer, oem blue and 2 part clear ready to go. I just need stock (ish) graphics. I want this build at maximum sleeper.

 

[mybad]

I know a couple guys have been waiting on this transition. Here you go. Assembled exhaust. Clears manifold and hull. Perfect.
Modified an inline strainer to accept 1/2" line.
Ordered standard Yamaha graphics for the hood. Added my own "SJ1200" decal underneath the "YAMAHA".

 

[mybad]

What happened here????? Anyone?
Urethane 2 part primer follower by color rite OEM blue. Turned white after 10 minutes. Thinking if it doesnt cure blue within 24 hours I might need to 600 wet sand and color coat again. I have 2 part urethane gloss waiting. I have low radiant heat on it right now. Still white.

 

[mybad]

Finished. Final gloss. This was the most time consuming part of the build. I think it turned out. Ok. I will apply OEM decals in 4 weeks.

 

[mybad]

Only cooling lines and case ground to finish. I did fire it up yesterday. Sounds big and fast. Lol

 

[tshank123]

Badass!

 

[mybad]

Ran ski on hose today. Waterbox is leaking around the hose connection. Will need to remove the entire motor to get the tank out. .

 

['kotajoe]

Damn that sucks, how did it run tho?