Take a look at my engine

[bit]

I was looking at the engine in my new SJ and I realized the paint is being burned off around the exhaust ports. Is this normal on a 701 engine?

The previous owner told me he tuned the pipe to bottom end power and tuned the AFR very conservatively. I plan to check both soon.

Any thoughts welcome

Brent

 

[CarterB]

id say its trashed....
ill cover shipping costs if you want to dump it

JK...no big deal

 

[special fx]

Yes, it's junk! Please send it to me for a core........or

Uh.....how 'bout that's where the factory exhaust (big box) blocked the flow of paint!

 

[mosquini]

New rings probably and re jet the carbs. Yeah! it's fun. :biggthumpup: that is pretty cool looking though. talk to chuckie though, he will set you straight on jetting and timing cause you may be way too advanced

 

[#ZERO]

When your cylinder turns bronze, then you'll have a big bore engine. :biggrin:

 

[bit]

New rings probably and re jet the carbs. Yeah! it's fun. :biggthumpup: that is pretty cool looking though. talk to chuckie though, he will set you straight on jetting and timing cause you may be way too advanced

Was this a serious post? The ski has 160psi on both cylinders and I don't have any reason to believe anything is wrong with the ski.

You guys think it could be from the stock exhaust? Is it common?

 

[#ZERO]

That paint has been known to change color in the high temperature areas.

It possible the there may have been an exhaust bracket bolted over top of where the sprayed area could not be reached?

Do you have your b-pipe exhaust manifold plumbed for two fittings?

What temperature do you have coming out of your pisser?

 

[bit]

Do you have your b-pipe exhaust manifold plumbed for two fittings?

What temperature do you have coming out of your pisser?

I don't know the answer to either but those are two things I can check.

Thanks

 

[h2odesperado]

looks just like thwere the paint couldn't make it onto the cyl cause the exhaust bracket in the way

 

[SUPERTUNE]

There's no problem...Yamaha didn't paint the silver motors with very good coverge, NO you didn't burn the paint off! The head would have to turn brown first! I have bought several brand new superjets and built many racers with them and I know how to melt them down when the cooling line comes off.

 

[madoyster]

Yes, it's junk! Please send it to me for a core........or

Uh.....how 'bout that's where the factory exhaust (big box) blocked the flow of paint!

No doubt that Factory Pipe is also toast, I have a nice clean stock exhaust which I'll trade. In fact there's really no telling what other damage you did to the ski. Let me know what day you want to pick it up!..lol

DUDE! your chit is Fine!!

 

[WaterX117]

I was just thinking that I wish mine was that clean. And I just finished redoing mine!!! :arms:

 

[#ZERO]

I'm just curious does anyone know what the paint code number is for the engine?

Does anybody sell the paint in a spray can, for that engine color?

 

[bit]

OK thanks guys, I am new to Yamahas so I have a lot to learn.

 

[keefer]

Here is a link to the paint you need to match the original Yamaha engine color. I found it at a local West Marine store.
http://www.westmarine.com/webapp/wc.../75/0/0/Tempo/All_2/mode matchallpartial/45/0

 

[SUPERTUNE]

Yamaha makes it in a spray can and it's not very good...color is off and washes off with gas, It doesn't seem to cure very well.