Coolant overflowing

[gunslinger_006]

I really don’t understand all these back order parts from Yamaha, I have NEVR experienced a back order part from Honda . When I needed Tenere rear wheel bearings a few years ago a few different Yamaha dealers said they had been on back for over a month so I bought aftermarket bearings, the whole deal cost me a week in a motel waiting for some pretty basic parts.

This year in particular has been bad and ive heard its bad for most brands. My buddy waited 60 days on some ktm parts that just arrived last week.


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[RogerRZ]

Got a spare hour this morning, and dug in. This is what I found. I doubt I'll be able to cobble something other than OEM together. At least it's November, and not April. View attachment 73407

 

[gunslinger_006]

That is wild. First failure of this type i have seen posted.


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[Don in Lodi]

Outstanding find. You lucky dog you, the first one to have this happen. Remember the automotive end, it is just diameter and temperature. You could get some gasket material and cut out a flat gasket and run without the thermostat in there in a pinch. The sealing surface is real narrow though, not real sure it would hold very long. I wonder what caused that... all I can think of is chemistry, I've seen some really hot engines and they've never rotted the gasket away.

 

[gunslinger_006]

My guess would be a manufacturing defect in the gasket. Maybe the mix was off and it ended up more brittle than usual.


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[WJBertrand]

Really weird failure.


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[RogerRZ]

You could get some gasket material and cut out a flat gasket and run without the thermostat in there in a pinch. The sealing surface is real narrow though, not real sure it would hold very long.

Given the time of year, and my current workload (I work in emergency management--things have been slightly busy), I will wait for a suitable replacement to show up, I think it will eventually. While getting to it isn't particularly hard, it is a fairly time consuming task, that I really don't wish to roll the dice on and have to repeat. On another splendid note, I dropped a very hard to get new spark plug on the garage floor, with expected explosive results. Time to close the toolbox drawers, and take Sunday off.

On a positive note, I ran a 5k very close to my personal best this morning! (because weight reduction, Bro!). I went from 207lbs, to 150 in the last five years, by making a half hearted effort at watching my food intake, and regular cardio exercise. Think of all the money I'm saving on not having to re-spring my bikes, now that I'm the same weight/size as the Japanese test pilots (5'8.5")...

Thanks to all who helped in this thread, if nothing else than for moral support!

 

[Jlq1969]

Given the time of year, and my current workload (I work in emergency management--things have been slightly busy), I will wait for a suitable replacement to show up, I think it will eventually. While getting to it isn't particularly hard, it is a fairly time consuming task, that I really don't wish to roll the dice on and have to repeat. On another splendid note, I dropped a very hard to get new spark plug on the garage floor, with expected explosive results. Time to close the toolbox drawers, and take Sunday off.

On a positive note, I ran a 5k very close to my personal best this morning! (because weight reduction, Bro!). I went from 207lbs, to 150 in the last five years, by making a half hearted effort at watching my food intake, and regular cardio exercise. Think of all the money I'm saving on not having to re-spring my bikes, now that I'm the same weight/size as the Japanese test pilots (5'8.5")...

Thanks to all who helped in this thread, if nothing else than for moral support!

As Don says, "damage is chemical"
Another thing to keep in mind, when you see the degradation of that rubber is: 1) the coolant is old? ... over time they acidify and can damage the rubber components ...
2) if you ever changed the coolant Was it the right one? ... Maybe you used the wrong one
3)and if the damage was chemical: will there be other damaged rubber, like a hose?

 

[Kruzzin5]

[/QUOTE]
I went from 207lbs, to 150 in the last five years, by making a half hearted effort at watching my food intake, and regular cardio exercise. Think of all the money I'm saving on not having to re-spring my bikes, now that I'm the same weight/size as the Japanese test pilots (5'8.5")...

... and you're probably getting at least another 10 miles per gallon on the s10.

 

[RogerRZ]

As Don says, "damage is chemical"
Another thing to keep in mind, when you see the degradation of that rubber is: 1) the coolant is old? ... over time they acidify and can damage the rubber components ...
2) if you ever changed the coolant Was it the right one? ... Maybe you used the wrong one
3)and if the damage was chemical: will there be other damaged rubber, like a hose?

I´ve only ever used Yamacool in it, and I've checked every other rubber bit, that all look fine. The center part of the thermostat, also rubber, looks pristine.

I've also stumped local talent, none of whom had eve4 seen that type of failure either.

 

[Nikolajsen]

On a positive note, I ran a 5k very close to my personal best this morning! (because weight reduction, Bro!). I went from 207lbs, to 150 in the last five years, by making a half hearted effort at watching my food intake, and regular cardio exercise.

Very cool, both run and weight loss

 

[Don in Lodi]

A strange one for sure.
Wish I could lose 50 pounds. Been the same weight for 20 years.