today I was working on assembling my shortblock 13b, and I did everything by the book accept let the coolant seals sit in the grooves with a book pressed down on them. well I finished the short block and rotated the eshaft to see if there was any binding and it turned with hard resistance than freed up. and made a great sound of compression. well I was going to put the shortblock in the car and looked in the exhaust port and there was the fukin devil, a peice of a brand new teflon encapsulated inner coolant oring that I just installed, so I need to rip it apart and find "4 NEW INNER COOLANT ORINGS"and intstall them correctly. so that really ruined my day. But if anyone has any oring tips or a set of 4 new inner orings please feel free to post or pm me, thanks

 

Those teflon ones don't fit the grooves just right, it seems there is a bit too much material there. Perhaps there was enough left over that got squeezed out and pinched off by a rotor sweeping past, yet the main part of the seal was intact and okay.

I am not a big fan of those seals, personally. Stockers have been proven for years and years now, and if you take care of them, they take care of you. Theyre easy to install and I see no reason to deviate from them.

Use hylomar to hold them in place during assembly...stretch the outer/soft ones before installing them, because theyre actually a hair small out of the package...by design. They can be installed without stretching, but they tend to slip out of the grooves more that way so you must be quite cautious.

 

Awesome, I think I will go with stock inner orings like you said, does anyone know where the best place online to buy them from at a good price?

 

Probably atkins rotary.

 

The teflons are a bitch....

The only way what Kevin described can really happen though is if you had your irons lapped. It makes the grove too small and then the or rigns will squish out the groovs AND it will never clench properly..

More than likely.. the O-Ring popped out of the groove as you were putting the motor together and more likely than that, it was the one on the DOWNSIDE of the center Iron as you were putting it down over the E-SHAFT

I still swear by the TEF-Encap O-rings.. but only on unmodified or brand new irons. They can also cause that damn piece of the iron to break off into the water jacket if they are too tight..

 

I ordered my new inner coolant seals, 4 new inner orange seals form mazdatrix for 88.44 + shipping, wut a bitch for stockers, but this time I will make damn sure I dont screw up, thanks for all the help guys

 

teflon ones made me fail at engine building, but i had great luck with oem

 

the reason I had to rebuild @ 6000 miles was due to the vioton (sp?) (teflon) combustion rings.. bloody things.. I used them again anyway, but was more careful.. so far so good

 

yah, I was going along great building my motor and knew this motor was gonna be done right and was gonna run awesome. except when it came to those teflon orings, the nonstick surface (the same thats in cookware) wouldnt allow the hylomar to hold the ring in the groove, they kept popping out, so I played with each one for like 45 min bending it to the exact shape till I figured I had it right, So I stacked the housings and if I was gonna have any doubts about my rebuild it was whether or not the inner orings seated properly or if they were gonna leak( I wasnt worried about the outter ones cause those guys seated nicely and stuck in theyre grooves. but anyways. Looks like next week when I return from work trip I will have to tear the shortblock down and redue it with the new stocker I will be recieving.

Thank god I caught that mistake before I assembed the longblock and droped it into the vehicle cause that would have just really ruined this whole experience. other than that though I think I did a pretty good job for my first rebuild.

I will keep everyone posted next week when I put the engine in the car and fire it up and breall it in

Thanks again everyone

 

The keys to using the teflon encapsulated inner o-rings is a very clean groove, Hylomar, and slight stretching of the o-ring itself to fit snugly.


-Ted