anyone have any idea where i can get a new radiator drain screw for my koyo FC radiator other than straight from them?

 

I know Advance Auto has a large assortment of that stuff....

 

its kind of a strange black PLASTIC screw with an oring... you ever seen one?

(otherwise i wouldnt be making a useless thread)

 

Dosen't it look like the stock plug?

 

I want to know why they dont use something better than plastic...my stock ones have been stripped for ages. My method each time I drain the coolant now: Take a flat head, put it under the torch til really hot, jam it into the little screw thing. Viola, new threading....lame ****. THey shou;da used metal or somethin else..

 

my room mate went to home depot and found a bolt with the same threads, and cut down the bolt to size, then put the bolt into a drill (head side facing out) and rotated it as he ground the head down the a grinder to allow the bolt head to fit. He then used a dremel to cut a groove on the bolt head for a flat head.

Use the o-ring on the stock koyo plug.

-Justin

 

I piced up a metal replacement plug at the local pepboys. works great and no more worries about busting the plastic one.
-a

 

I broke mine as well.

I went to Ace Hardware with the left over plug and got a bolt which matched it.

I then got a few rubber rings to place around it for a good seal.

It's lasted me 6+ months so far with no problems.

 

I broke mine as well a few weeks ago. An oil injector fits in there perfectly. I just filled the it with JB weld and shot it with compressed air to pack it in. They just cut a small paper gasket to help seal. If you do this be careful not to overtightened or back out the threads in the koyo. Been driving like this with no problem for a few weeks now. It also makes it easier to drain the coolant everytime now. 17mm deep socket and you'll never have to replace it. I also dremeled out some of the underbody pan so I never have to remove it again to drain the coolant.

 

http://www.mazdatrix.com/getprice.as...m=15-2030-N326

 

i think its because plastic is cheaper to replace than a brand new radiator (ie, cant strip the metal threads with plastic)

 

As you can see from this thread the plastic does not hold up at all.

It is VERY soft plastic and on mine almost stripped out completely. I had to melt a screw driver into it to remake a hole to unscrew it.

 

are you using a large headed screwdriver?

 

i didnt strip out the head on the plastic screw, the problem is that the threaded part broke off about halfway up. kinda like a bolt breaking off.

 

That's what happened to me. I was just putting the drain plug back on normally, not applying much torque at all. then I heard a small crack and decided to back it out, then it just snapped. I'm kinda glad it broke since I'll never have that problem again.