i was thinking the same. cant really avoid it(by cutting out more space to move) and keep the seal tight, so if theres any rotation of the corner seal it may cause binding and eventually wear the broad surface of the side seals.

I cut each side seal to the specific rotor location. Unfortunately each rotor corner is slightly different. I then rock the apex seal to check for binding of the side seal. If any is found I increase the cut on that side.

One advantage I noticed was that on final assembly the apex seal always slides in fully. It is perfectly aligned. No fishing with a pick to straighten the lower corner seal position!

Barry

I was at Barry's last week, he is the wizard!

I am seriously hoping he is ready, if not I think he should ride with Jack!

/hijack..... Hey Barry I fixed that a/c!

I'm not too familiar with engine work but what's the benefit of this?

More compression.

Here is a poor picture of leak from my last .003” clearanced side seals (cleaned by 50/50 water/meth).

Notice the clean trailing side vs. the leaking leading end.

Barry

http://i287.photobucket.com/albums/l...5-2540_IMG.jpg

I see the difference between the trailing (right side) and the leading (opposite) sides of the rotor and that was due to the large clearance you had before between the side seal and the corner seal.

So, the larger corner seal (with the groove in it for the longer side seal) lowers compression by....?

I'm looking at this pic (no access to the FSM for specs right now) and I can see how your corner seal(s) are different but since I'm not familiar with internals I don't fully grasp how the compression is lowered by reducing/eliminating the clearance.

http://rotarycarclub.com/attachment....2&d=1206700401

http://www.turborx7.com/images/rebuild/Specs11b.jpg

I'd love to hear more about his when you have time.

The gapless corner seal doesn't leak any compression!

http://i287.photobucket.com/albums/l...cesideed-2.jpg

The leaking seal was set-up with a tight clearance of .003", the Factory minimum.

http://i287.photobucket.com/albums/l...5-2540_IMG.jpg

Barry

This is an awesome intriguing idea. I saw on your same thread on the other place that you're not running this. How is it doing? What side seals are you using?

The trimmed version of the Mazda side seal is part number is N3Y1-11-C11. There is a longer untrimmed version, but Ray Crowe could not find it. He ordered an older number but it turned out to be thicker (.8mm instead of .7mm).

Does anyone know this untrimmed part number?
Barry

Wouldn't that raise compression due to no escaping (or what not) air?

Yes, it gives higher cranking pressure and running pressures!
Barry

Oh, earlier you said less compression. I got confused. :D

That's what has me :confused:. My brain says compression is maintained constant if there is no clearance for the seals to flex so I don't see how compression is lowered.

I'm also waiting on an email to see if I can get a hold of that SAE article.

He misspoke earlier, it appears. It does raise compression.

I have access to all the SAE documents here............. they're just on Microfiche..... :banghead::banghead::banghead::banghead: