Did Yamaha paint any 760's black?

[Cummins_cj]

Trying to figure out if Yamaha ever painted any of their engines black in the wave runners or if they were always gray like usual. Really interested to see if this is someones rebuild that blew up or a factory motor.

 

[ngerk]

Plenty of factory black 760s out there. Wouldn’t rely on that being the answer to an engine being rebuilt or not though.

 

[Cummins_cj]

It's got some numbers imprinted into the case on the PTO side. I'm going to see if maybe that brings anything up. There are some weird things don't so I'm pretty sure someone had this out so was just trying to figure out who might have done it if it was one of the bigger suppliers

 

[KMN]

I've seen some in black. Not sure why they made them in black though.

 

[te4250]

Isn’t that not an oem piston

 

[Storbeck]

Does kinda look like a wiseco piston, but a look at the top would confirm it. I know I've seen 760 carbs that are black, so that implies that the must have painted some of the motors black.

I'm not sure why you care. It's entirely possible to blow up a bone stock, or properly rebuilt motor, even if there is nothing wrong with the motor.

 

[MTRHEAD]

That is a wiseco piston. All of my 760 cylinders are black. I think at least one of mine came from waveblaster2. Many black 760 motors out there.

 

[Cummins_cj]

I'll look at the piston again. It would make sense they are wiseco since someone out that sticker on the trailer. I initially thought it was just someone who found a sticker put it on there.

As for why it matters. I always analyze other people's builds. Especially the big corporate rebuilders. Always good to see what their actual quality of work is, which parts and gaskets they use, and how many hours the engine lasted. Of course it's also interesting because my dad used to be in the plant at Newnan and was in the test department for a long time. He didn't remember them switching colors but he moved out of water vehicles a few years before this was built.

 

[MTRHEAD]

I'll look at the piston again. It would make sense they are wiseco since someone out that sticker on the trailer. I initially thought it was just someone who found a sticker put it on there.

As for why it matters. I always analyze other people's builds. Especially the big corporate rebuilders. Always good to see what their actual quality of work is, which parts and gaskets they use, and how many hours the engine lasted. Of course it's also interesting because my dad used to be in the plant at Newnan and was in the test department for a long time. He didn't remember them switching colors but he moved out of water vehicles a few years before this was built.

Those motors are not assembled in USA. “Japan”. Those were imported complete and never saw the Georgia plant

 

[X2Kid]

The one that came out of a B2 I parted was black. No idea why they have different colours.

 

[Cummins_cj]

Those motors are not assembled in USA. “Japan”. Those were imported complete and never saw the Georgia plant

Very clear on that. Dad even spent 6 months in Japan and some of it was when they had some engine issues. He figured it was because it came out of a different plant in Japan than normal, but that was just a theory. I kinda wish he still worked there. The Keys running endurance tests used to be a blast. It was a fun job for him while it lasted and until the boats got too fast. In any case, whoever built the motor used quality gaskets and seems to have done fairly good work.

 

[Cummins_cj]

Those motors are not assembled in USA. “Japan”. Those were imported complete and never saw the Georgia plant

If I remember correctly the Jammer, first WaveRunner, and the Blasters were never assembled in the US. But its been a lot of years now.