Boognish_Forever
Member
Changing my radiator today and notice this bump on the thermostat housing for the lower radiator hose. I’m thinking the previous owner had this welded.
Please tell me this is normal.
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Boognish_Forever
Member
Man that looks like it was welded a while ago and then has dried coolant buildup over the welded portion.....maybe PO dropped it and it cracked or it got banged up with a tool and repaired.
If it's the same diameter you should be able to clean it off but then why was coolant building up there in the first place unless the clamp wasn't tight enough, I've seen that kind of buildup where the T-Stat housing meets the block once the gasket got old but and seeped under the timing cover but this is just a hose on pipe/nipple.
sleepydad
Senior Member
This is a shot of a brand new one, it's a detent thing so you have a reference for the hose stop.
it's a factree setup.
Boognish_Forever
Member
Boognish_Forever
Member
I’m not sure why that tube had so much build it. The hose wasn’t leaking, but it sure did come off easy. I wonder at some point if the previous owner used tap water when mixing the anti freeze (which was red) and caused the build up. The spring clamp seems to be in good shape, but I’ll put it on the top hose just in case.
Kanoe
New member
I've got one on my corolla like that. It continuously weeps, not enough to drip but it builds up like that. I think once the aluminum gets that pitted corroded texture it's hard to stop it.
T4R2014
Elite Member
It's just maintenance. Doesn't matter if you use green or red. I switched to pink. Time will tell if it does the same.
Man the original pic of the dirty pipe sure looked like it was repaired, that positive stop looked like sloppy excess filler material lol, don't remember this when I did Timing belt about 2 years ago haha, at that time I also made the switch from green (previous owner) to pink coolant, my extra coolant shelf in the garage is starting to look like a rainbow - pink for toyotas, green for my seadoos, orange dex cool for my chevy, blue for my wife's mini cooper, can't even remember the color for my dodge srt-4, might be pink/red as well....
brillo_76
Elite Member
Wait a min.. Isnt that just the hose stop on the casting that is just dirty? I know lots of Toyotas have a stop on their castings so the hose will not go on anymore..:/
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Boognish_Forever
Member
It looks like I missed a spot by the hose stop, now that you mention it. Already put 50 miles on it since the change with a new hose and no leaks. I’ve only done a few radiator changes on different vehicles and I’ve never seen build up like that before.
I’m glad it had the red coolant in there before and always will.
Boognish_Forever
Member
Honestly I thought the same thing. I didn’t get a look inside, but it felt smooth and no noticeable pits or holes in the tube.
Boognish_Forever
Member
I can’t thank you enough. You saved me over a $100 and biking across town to the dealership to pick up that thermostat housing. I was also going to buy a new thermostat if I did have to replace it.
I had a 88 mustang with a 4 banger and the radiator leaked so bad I would put a gallon of straight tap water in it every time before driving to work. The water had so much lime where I lived in Wisconsin, you could see it caking up in the radiator. I was a broke teenager and didn’t want to put a penny into that car for many other reasons.
19963.4lsr5
New member
I’d put new spring clamps on when you get a chance. They do get weak over time.
I had so much corrosion and pitting on the upper hose outlet I had to replace it. Thank god I had two engines to use parts off of.
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I had so much corrosion and pitting on the upper hose outlet I had to replace it. Thank god I had two engines to use parts off of.
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brillo_76
Elite Member
I actually had the bottom of one rust away on the bottom radiator hose. Excellent idea to replace the clamps.
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