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fd tstat housing on a fc?

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Old 02-16-12, 08:24 AM
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fd tstat housing on a fc?

Anyone know if a fd thermostat housing will fit a s5?
Old 02-16-12, 08:46 AM
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ill bite- why?
Old 02-16-12, 08:49 AM
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I know the thermostat fits (because I'm using one) but not sure about the housing.
Old 02-16-12, 08:57 AM
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I have one of each, but I never compared them. By memory, I don't think it will.
Old 02-16-12, 09:15 AM
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I need to replace my tstat housing on my s5 and could get my hands on a fd one fast insted of waiting for the fc one. If it could be made to fit I could do that too. I'm just not sure how close they are
Old 02-16-12, 09:32 AM
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If this...


...is the correct part, then no, it wouldn't come close to working.
Old 02-16-12, 09:34 AM
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hmmm ok looks like I got some waiting to do then lol never seen a fd housing before so I wasn't sure
Old 02-16-12, 12:51 PM
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What happened to your origional one? You can take a wire brush and take off teh corrosion if that is what your concern is. Unless you cracked yours
Old 02-16-12, 01:07 PM
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Originally Posted by GrossPolluter
What happened to your origional one? You can take a wire brush and take off teh corrosion if that is what your concern is. Unless you cracked yours
I blew a huge chunk of it off, defintly not fixeable haha ill try to throw a pic of it on here
Old 02-16-12, 01:42 PM
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not even remotely close to fitting. completely and utterly different in every way, shape and form.

order the aluminum one from mazdatrix, takes about 2-3 days to get it versus wasting time trying to make something work.
Old 02-16-12, 08:03 PM
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Originally Posted by Karack
not even remotely close to fitting. completely and utterly different in every way, shape and form.

order the aluminum one from mazdatrix, takes about 2-3 days to get it versus wasting time trying to make something work.
Ya I qas gunna order one from mazdatrix until I saw that is was like 80 bucks so I'm buying one from another forum member for 23 shipped insted lol
Old 02-16-12, 09:33 PM
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And when that 25 year old piece of plastic breaks you'll get the aluminum one....
Old 02-16-12, 10:33 PM
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I actually had the aluminum one and I managed to blow it up somehow lol
Old 02-16-12, 11:23 PM
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Originally Posted by Kstout24
I actually had the aluminum one and I managed to blow it up somehow lol
So, the aluminum housing lasted but a fraction of the time the "crappy plastic" OEM part did?
I sense a disturbance in The Force.
Old 02-17-12, 12:09 AM
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Honestly I want to see a picture of this water neck you "blew a chunk" out of... for curiosity's sake as im trying to wrap my head around the prospect of putting enough stress or pressure on the cooling system to blow apart a cast aluminum part.
Old 02-17-12, 07:03 AM
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Originally Posted by FirstRotaryExp
Honestly I want to see a picture of this water neck you "blew a chunk" out of... for curiosity's sake as im trying to wrap my head around the prospect of putting enough stress or pressure on the cooling system to blow apart a cast aluminum part.
I can't upload it for some reason but if you give me a cell number I can send it to you and if you wouldn't mind throwing it up on this thread for me
Old 02-18-12, 06:46 PM
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so heres that pic of my aluminum tstat housing that blew apart
Attached Thumbnails fd tstat housing on a fc?-mazda-rx7-10.jpg  
Old 02-18-12, 06:51 PM
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^That's how you effing do it!!
Old 02-18-12, 07:00 PM
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Ya... not even sure how I built up that much pressure haha
Old 02-19-12, 01:04 AM
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Wow.... thats a huuuuuge effing chunk just blown off...

Did you buy that part new or used? I mean the way it seems to have kaboomed off indicates a bad casting. Personally I would just switch to a S4 waterpump/housing/neck and not have to worry about spending out the *** for an aftermarket neck.
Old 02-19-12, 08:01 AM
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Originally Posted by FirstRotaryExp
Wow.... thats a huuuuuge effing chunk just blown off...

Did you buy that part new or used? I mean the way it seems to have kaboomed off indicates a bad casting. Personally I would just switch to a S4 waterpump/housing/neck and not have to worry about spending out the *** for an aftermarket neck.
I'm pretty broke and can't afford all that right now. So I'm just buying a used one to get me by until I got the money for all the s4 stuff
Old 02-19-12, 11:51 AM
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Originally Posted by clokker
So, the aluminum housing lasted but a fraction of the time the "crappy plastic" OEM part did?
I sense a disturbance in The Force.
the funny one is the FD AST's. the aftermarket ones fail really quick, its usually a QC thing, they are built so badly, they barely worked in the first place.
Old 02-19-12, 12:19 PM
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hmm, $23 for a used plastic piece that will maybe last a few years or the aluminum one which should outlast the car.. decisions decisions.

if you blew up the aluminum one i would have contacted mazdatrix and they likely would have sent you a new one with an apology.

Originally Posted by j9fd3s
the funny one is the FD AST's. the aftermarket ones fail really quick, its usually a QC thing, they are built so badly, they barely worked in the first place.
true that but in that case those AST replacements are made with cheap materials, i have yet to see an AST that is worth it's weight in salt just in the name of saving $10 in materials for decent thickness wall tubing and plate materials. problem is they always warp at the neck because they're flimsy.

Last edited by RotaryEvolution; 02-19-12 at 12:21 PM.
Old 02-19-12, 12:44 PM
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Originally Posted by Karack
hmm, $23 for a used plastic piece that will maybe last a few years or the aluminum one which should outlast the car.. decisions decisions.

if you blew up the aluminum one i would have contacted mazdatrix and they likely would have sent you a new one with an apology.



true that but in that case those AST replacements are made with cheap materials, i have yet to see an AST that is worth it's weight in salt just in the name of saving $10 in materials for decent thickness wall tubing and plate materials. problem is they always warp at the neck because they're flimsy.
im just got the used one to get me by for a little bit until i can get a new aluminum one lol but ya i just havnt heard of anyone blowing an aluminum one like that so i thought id share it to the world that my 7 is the most retarded out there haha
Old 02-19-12, 12:59 PM
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well, it's just made of cast aluminum. it's not as difficult as you would think to get impurities into the mix if you aren't careful. cast parts fail more regularly than we would like to think if the people casting the parts are doing it on a friday afternoon mentality.


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