6 cube 066

[Deets066]

Not positive that it was the ring, but it did fit a little loose in the groove. A caber fits better and the caber is .007 bigger than the steel ring.

 

[Moparmyway]

No, exhaust gas temps are north of 1100F I'm a properly tuned engine.
.

And the piston is also getting cooled from underneath at the same time the egts are trying to heat it from above. Crown temps are no where near 1000 degrees Sir.

 

[Deets066]

Aluminum melts around 1250, I used to see 1300 egts in my sled. Pin the throttle too long and it would melt the exhaust side crown. Just the edge

 

[Deets066]

That was an entirely different animal than a saw engine though

 

[Sty57]

Aluminum melts around 1250, I used to see 1300 egts in my sled. Pin the throttle too long and it would melt the exhaust side crown. Just the edge

I loved having EGT readings on my sled. Really opened my eyes up on jetting.

 

[Deets066]

I loved having EGT readings on my sled. Really opened my eyes up on jetting.

My buddy borrowed one of my RacePaks years ago. He doesn't ride anymore so I'm gunna get it back and put it on this 066

 

[Sty57]

I've been thinking about doing that with my old Digatron too.

 

[hseII]

No, I'm a properly tuned engine.

I Disagree.

And the piston is also getting cooled from underneath at the same time the egts are trying to heat it from above. Crown temps are no where near 1000 degrees Sir.

Agreed.

 

[Marshy]

And the piston is also getting cooled from underneath at the same time the egts are trying to heat it from above. Crown temps are no where near 1000 degrees Sir.

My main point was that heat cycling a piston in an oven is pointless because the higher temperatures the piston is exposed to in the combustion chamber. Does the piston metal temp actually get to 1100-1200 degrees? In some cases they do. I wasn't saying g the actual metal temp was 1100. Maybe not in an air cooled saw but without an EGT you wouldn't even have a ball park idea. Guys on sleds can run a little over 1200F EGT without melting a piston but those are water cooled engines.

If you guys put a EGT on a saw I think it would be awesome. There's probably no info out there on egt's for saws.

 

[Mastermind]

Who took over @thomas1 's profile?

 

[thomas1]

$hit Tom, never seen you post this much and not belittle somebody.







I'm kinda disappointed.

Nothing is random.

Don't believe everything you read crybabies post on the Internet.

 

[thomas1]

Who took over @thomas1 's profile?

See? ^^^

 

[Mastermind]

See? ^^^

Now I'm offended.












Just kidding, GFY.

 

[Moparmyway]

. Maybe not in an air cooled saw but without an EGT you wouldn't even have a ball park idea.

Wade, I kind of think that we actually do

Piston wash: If the crown was getting above the temps youre talking about, we wouldnt see residual oil as wetness and we definately wouldnt be able to wipe the tarry mess off of some of the pistons posted in this forum like we can.

EGT doesnt tell us crown temps, egt just tells us the temperatures of the exhaust gasses

 

[thomas1]

Now I'm offended.












Just kidding, GFY.

Just do what I did and use the ignore feature. Once you put 3-4 dozen members on ignore it really improves the quality of the posts on the site.

 

[Mastermind]

Just do what I did and use the ignore feature. Once you put 3-4 dozen members on ignore it really improves the quality of the posts on the site.

I tried that on SawHawgz.........now I'm all alone.

 

[Marshy]

EGT doesnt tell us crown temps, egt just tells us the temperatures of the exhaust gasses

We are in agreement on this.

The fact is, the temp of a piston crown varies greatly (stating the obvious). You could be tuned right to the very harry edge of the Pope's lip and have 1300F EGT and start to melt the edge of the crown while the intake side is no where near that temp.
Back to my original point, heat cycling a piston in an oven is useless and won't even get hot enough to simulate the temperatures occuring in a combustion chamber. That's all I was saying. Nothing more complicated.

 

[Redfin]

I tried that on SawHawgz.........now I'm all alone.

I wondered why it seems you are just talking to yourself over there.

 

[hseII]

I wondered why it seems you are just talking to yourself over there.

Cause He is.

 

[thomas1]

I tried that on SawHawgz.........now I'm all alone.

Really? I haven't seen you post there in like 2 years.