Replaced thermostat neck and associated parts today and found something.
#1
MECP Certified Installer
Thread Starter
Replaced thermostat neck and associated parts today and found something.
So, my thermo neck was cracking and slightly leaking allowing air into my cooling system. Finally got the parts this morning and it took roughly 30 minutes to do.
Got the parts from mazdatrix. Aluminum neck, stant thermostat, and associated o-ring.
My original thermostat was well worn and so was the o-ring. The o-ring was all flat and deformed so it definately needed replacement.
So here is what I found when I removed the thermostat. A piece of what i think is outer coolant seal. It is black and rectangular shaped, not round. It has faint lines on 2 sides and smooth on the other 2. The piece is about half an inch long.
I don't have time to take pics, but I will tonight of the old thermostat and the piece of seal that was lodged in it.
Got the parts from mazdatrix. Aluminum neck, stant thermostat, and associated o-ring.
My original thermostat was well worn and so was the o-ring. The o-ring was all flat and deformed so it definately needed replacement.
So here is what I found when I removed the thermostat. A piece of what i think is outer coolant seal. It is black and rectangular shaped, not round. It has faint lines on 2 sides and smooth on the other 2. The piece is about half an inch long.
I don't have time to take pics, but I will tonight of the old thermostat and the piece of seal that was lodged in it.
#3
MECP Certified Installer
Thread Starter
And that is the strange thing...I have no signs of coolant seal failure at all.
I am not loosing coolant, I don't have exhaust coming out of the radiator, it is strange.
I am going to take a picture of it later today and post it. Been busy and havent had a chance to do it.
I am not loosing coolant, I don't have exhaust coming out of the radiator, it is strange.
I am going to take a picture of it later today and post it. Been busy and havent had a chance to do it.
#6
MECP Certified Installer
Thread Starter
I don't have a pressure tester on hand so I'll have to get my hands on one.
Also, I do routine and rather thorough checks in the engine compartment every week and there is no coolant leaking anywhere. This seal is relatively straight so I would imagine it would have come from the straight side of the rotor housing it this is what it is. Definately no leaks there.
I am taking a picture right now...I'll post it up.
Trending Topics
#9
MECP Certified Installer
Thread Starter
#10
Boosted. I got BLOWN!!!
iTrader: (29)
Wait... maybe others will confirm but I say no to coolant seal upon seeing that. That looks like the t'stat neck to water pump housing gasket. It pinches off when you tighten it, hanging off the sides (or in yoru case internally). It kind of looks like plain rubber. The coolant seal doesn't look like that IIRC. Plus you say no leaks, inside or out. Finally, the initial leak was in that area.
#11
MECP Certified Installer
Thread Starter
Wait... maybe others will confirm but I say no to coolant seal upon seeing that. That looks like the t'stat neck to water pump housing gasket. It pinches off when you tighten it, hanging off the sides (or in yoru case internally). It kind of looks like plain rubber. The coolant seal doesn't look like that IIRC. Plus you say no leaks, inside or out. Finally, the initial leak was in that area.
Nope, the thermostat neck oring looks totally different, and it was all intact still attached to the thermostat when I removed it. The original leak was a large crack in the plastic neck.
#12
MECP Certified Installer
Thread Starter
Son of a bitch.
I did an engine bay inspection today and found that the aluminum thermostat neck I bought from mazdatrix has 2 casting flaws in it. There are two small cracks. One at the base of the neck, at the flange, and the other just all alone on the neck itself.
What a pain in the ***. My last part I bought (not from mazdatrix), the water pump, didn't have the pulley boss pressed on correctly. Now this? I HATE having to redo repairs due to faulty parts.
Will I have to get another freaking o-ring for the thermostat too?
I did an engine bay inspection today and found that the aluminum thermostat neck I bought from mazdatrix has 2 casting flaws in it. There are two small cracks. One at the base of the neck, at the flange, and the other just all alone on the neck itself.
What a pain in the ***. My last part I bought (not from mazdatrix), the water pump, didn't have the pulley boss pressed on correctly. Now this? I HATE having to redo repairs due to faulty parts.
Will I have to get another freaking o-ring for the thermostat too?
#13
Manual Rack
iTrader: (50)
That is NOT a coolant seal IMHO. Looks more like the thermostat O-ring.( I assume your S5 then)
Are you sure the cracks on the thermostat neck aren't just casting marks? Ive seen front covers and a few various other parts with "cracks" that really are just casting marks. Take some pics for more opinions.
Are you sure the cracks on the thermostat neck aren't just casting marks? Ive seen front covers and a few various other parts with "cracks" that really are just casting marks. Take some pics for more opinions.
#14
MECP Certified Installer
Thread Starter
That is NOT a coolant seal IMHO. Looks more like the thermostat O-ring.( I assume your S5 then)
Are you sure the cracks on the thermostat neck aren't just casting marks? Ive seen front covers and a few various other parts with "cracks" that really are just casting marks. Take some pics for more opinions.
Are you sure the cracks on the thermostat neck aren't just casting marks? Ive seen front covers and a few various other parts with "cracks" that really are just casting marks. Take some pics for more opinions.
I'll get some pics tommorow.
#17
MECP Certified Installer
Thread Starter
Have had other things going on, so I just now called mazdatrix this morning....
GREAT GREAT company. Took all of 5 minutes. They are sending me a new neck and oring for the thermostat, and a prepaid box so I can send the defective neck and the now unreusable oring back to them. Badass customer service. They didn't even question me about it.
GREAT GREAT company. Took all of 5 minutes. They are sending me a new neck and oring for the thermostat, and a prepaid box so I can send the defective neck and the now unreusable oring back to them. Badass customer service. They didn't even question me about it.
Thread
Thread Starter
Forum
Replies
Last Post