I've heard both good and bad things on both Viton and Silicone. Stock can't handle a radiator or water pump failure. I haven't checked if Mazdacomp makes a higher temp version. Has anyone tried or have any knowlege on the Teflon ones? https://www.nopistons.com/forums/pub...IR#>/dunno.gif

I've got stock ones in my engine now. If someone were to give me a set for free, then I'd put them in. Other than that, I've never heard of anybody in Japan losing an engine to an O-ring....now to apex seal failure, that's common https://www.nopistons.com/forums/pub...O_DIR#>/11.gif

I just bought a complete set of viton o-rings which I am going to try, it set me back about 80 canuck bucks to for the entire set for the motor, I took all the factory o-rings to an o-ring shop and got them to set me up with all the o-rings...

The outer water seal is rather large and has to be made from bulk stock, I am going to bond it with cyanocryalate(crazy glue) and put the join in a dry area of the housings, along with a dab of silicone at the join....Maxt

Huh? If I don't have to rebuild, what do I care if the o-rings are reusable or not? If they are not rebuilding for o-ring failure in Japan, then what do they know that we don't? https://www.nopistons.com/forums/pub...IR#>/wacko.png

oring failure depends on maintenance!



change your coolant once a year and you should not have coolant seal failure for a very long time

That's my whole point!!! https://www.nopistons.com/forums/pub...IR#>/blink.png Overheating is a bigger problem then Apex Seals. We get bigger intercooler, vented hoods, etc. You allready know the Apex Seals are a wearable part, just like a timing belt in a pisston engine. The difference being the price of replacement. The same kind of damage can be done with a broken timing belt as a broken apex seal. https://www.nopistons.com/forums/pub...IR#>/wacko.png

Replacement of the Apex seals is expected. Failure of the O-Rings is not!

I don't think that's true also. I think it's "preventative" maintenance. I plan on heat cotaing as many parts as possible. My rebuild was about 1.5 yrs ago. I was also running royal purple ice.

There was some chatter on an airplane engine site on what type of o-rings. They commented on using aluminum or copper solid wire, similar to copper o-rings in the V-8 racing engines, also a teflon coated wire. Just put the splice at the intake with a little red RTV. They did say this would be more of a race application and couldn't say on its longivity.

Richard https://www.nopistons.com/forums/pub...#>/biggrin.png

thats interesting about the copper and whatnot https://www.nopistons.com/forums/pub...#>/biggrin.png



But yeah, is there any difference between the O-Rings available for 13Bs that anyone should care about? I mean anything important or reliability improving, etc.

the renisis uses the same o rings as every other post 86 engine. the only reason the fd oens fail, is because of the turbos being right there.



mike