Does Mazda Motorsports have solid corner seals? I cannot find them on the site. Anyone know the part numbers?

thanks

 

Atkins Rotary has them.

http://www.atkinsrotary.com/store/cu...cat=612&page=1

 

have you checked Mazdatrix?

 

I have heard that solid corners are bad news, not enough flex, hollow center factorys allow a little more flex, plus the little rubber piece is a nessary part helps absorb shock. I used to leave the rubber out on race engines until the logic of them was explained , BY SVEN of NRS. he probably knows somthing about seals.. Ron

 

Mazda came up with the "springy" corner seals in 1976. They didn't add the plugs until 1983. The plugs only help startup and idle; they are not necessary otherwise. Solid corner seals are stronger, but that only really helps when aggressive intake port timing creates seal-tipping. The disadvantages to solid corner seals are more friction and poorer sealing.

 

Nice! I' am soooo glad someone started a thread on this. Mainly because I have a question.

I've read on this forum that one should not run the rubber plug in a bridge-ported motor because it will eventually come out and possibly damage a seal.

So my question is: Should I run a factory seal with no plug or a solid seal?

 

I heard that too. Thats why Im going solid seals in my bridge port motor. I did know about atkins solid seal, but I was wondering if Mazda Motorsports offered them too.

 

No doubt, the solid corner seal is the safest option...but if the bridge is perfectly centered to support it the "springy" corner seal will seal better. Solid is probably your best option, though.

 

Mazda factory 3mm solid corner seals: 1011-11-321 (12A & 13B / 74-75).

 

ahh man, no 2mm :-(

 

?

I want 2mm.

 

Atkins, but you will need to clearance them(as you should anyway ), they often fit too tight.

 

So what's the verdict on not running corner seal plugs. What are the negatives to not running them?

 

A tiny bit less sealing/compression if you ommit them.

Basically a little less compression when starting the engine= requires more fuel/time cranking= factory put them in for the ever tightening cold start/idle emmisions standards.

 

I have a bad taste with soild corner seals. They have literally shattered on motor ive taken apart with them installed. Perhaps they wernt clearanced correctly, but if you cannot realize that when building the engine you have no buisness assembling it anyways...

Stock for me...

 

What does the crucible say?