Raffle 262 builds

[RI Chevy]

I saw Jeff hitting the delete button for something on your phone when you weren't looking Dan. Now we know what THAT was....

Sent from my XT1585 using Tapatalk

I had to get rid of the evidence. You guys always set me up. Lol
Nah, its all good. 262XP os a cool saw for sure. [emoji106]
Ported, even cooler. [emoji41]

 

[Redfin]

The saw does run good Dan. Im in the more ex duration camp. I think if you play with your pop off you will sort that lean.

 

[paragonbuilder]

So I pulled the muffler to open it up more on Ryan’s saw and found this...

Just about crapped myself....

 

[paragonbuilder]

Then I remembered I cleaned up the piston cuz it looked like this...

Now I’m pissed cuz I can’t tell if it’s old or new...
So down she comes

 

[paragonbuilder]

 

[RI Chevy]

Crap. Looks like plenty of lube in the lower end.

 

[paragonbuilder]

I don’t think it’s worse than before but I can’t be sure. After discussing with my saw Bro, the scratches in the bore from cleaning it up look like they are a bit coarse, though undetectable with a pic. So I ordered a new piston which I should have done in The first place, and I’m going to spend some more time in that bore.
No way in hell can I send out a saw that looks like that. I don’t know what I was thinking putting that back in...[emoji35]
I’ll use it in one of my test builds in the future.

 

[paragonbuilder]

Crap. Looks like plenty of lube in the lower end.

Yes plenty, it may not even have been an issue. But how could I know when it looks like that.

 

[paragonbuilder]

Can anyone guess what oil I was running? That doesn’t already know..,

 

[RI Chevy]

Klotz?
Carboned up quick for only a few tanks of fuel.

 

[RIDE-RED 350r]

Did you clean that piston crown before you reinstalled it? I ask because the wash pattern looks like shes been running a little lean.

 

[paragonbuilder]

Did you clean that piston crown before you reinstalled it? I ask because the wash pattern looks like shes been running a little lean.

Interesting. What makes you say that Joe?
Yes it was clean.
Here is the chamber and plug.

 

[RIDE-RED 350r]

In my understanding, good piston wash that helps indicate a good state of tune will have a bit of clean piston crown most of the way around the outer circumference of the piston with larger areas of clean (wash) adjacent to the transfers.

It's not the end-all be-all, but it does help give us the whole picture. Piston wash is relative to combustion chamber temps, richer condition-cooler temps-more washed piston crown. Conversely the opposite is true in a lean condition.

I would think that oil type and ratio plays a factor as well. I don't claim to be an expert, just wanted to bounce some ideas off ya.

 

[paragonbuilder]

In my understanding, good piston wash that helps indicate a good state of tune will have a bit of clean piston crown most of the way around the outer circumference of the piston with larger areas of clean (wash) adjacent to the transfers.

It's not the end-all be-all, but it does help give us the whole picture. Piston wash is relative to combustion chamber temps, richer condition-cooler temps-more washed piston crown. Conversely the opposite is true in a lean condition.

I would think that oil type and ratio plays a factor as well. I don't claim to be an expert, just wanted to bounce some ideas off ya.

Makes sense!
From looking at the plug and knowing where I had it tuned, I don’t think it was lean at all.
I was running klotz benol. Great lube but burns super dirty! I’d bet if I had Amsoil in there wash would be barely perceptible at 1-1/2 tanks.

 

[paragonbuilder]

Klotz?
Carboned up quick for only a few tanks of fuel.

Yep

 

[RIDE-RED 350r]

Makes sense!
From looking at the plug and knowing where I had it tuned, I don’t think it was lean at all.
I was running klotz benol. Great lube but burns super dirty! I’d bet if I had Amsoil in there wash would be barely perceptible at 1-1/2 tanks.

Yes Sir! I run Maxima 927 castor oil in my 250r's and it does burn dirtier than the synthetics in that way. Given that info, you are probably just fine.

Edit: after taking a look at your piston pics on my laptop as opposed to my phone, that black doesn't really have the look of fuel carbon but more of oil deposits. I think you are exactly right.

Now before we get off on an oil thread tangent... LOL!

I would bet those marks on the piston haven't changed but I know what you mean about wanting to send someone a first rate product and wanting everything to be perfect... The struggle is real my friend!

 

[paragonbuilder]

Got my bench cleaned up from the gtg.
Kyle @Sleeper I’m on to your saw.

 

[paragonbuilder]

It was time for sure...

 

[paragonbuilder]

 

[paragonbuilder]

Heat shield and gasket matched

Now the muffler