broke a couple of spark plugs, possibly cracked a corner seal (not sure if I damaged it while disassembling engine), but no damage to my RA seals. Reused them actually (had less than 10k miles)

The RA seals are designed to hold up to catastrophic knock events better than other seals, and I think they do a good job of that. They're not designed for best sealing (the 3 piece seals are probably best at that), they're not designed to go 100k miles with light wear on the housings. As long as you understand what they're for they're great seals.

 

I have the ra classics right now . no scratches on housing and not even running omp or premix 1500 miles with them seen 18psi no problems now . besides the irons cracking . time to pin it and get a new ecu

 

im really interested in your problem, as im try to turn up the boost on my FD with high comp rotors..

seems reoccurring problem among a few of us running rich AFRs, retarded timing, yet still causing engine damage. i found some old threads mentioning too much split can actually put too much heat into your trailing plug. i think your other thread said you were running 9's plugs, which definitely wasnt helping. maybe rich afrs, retarded timing, and messed up split put too much heat into the trailing plug. mazda thought a 9 in the trailing was necessary for <200whp, and you are making twice that power

it would be interesting to replace trailing plugs with a super cold plug disconnected or a bolt, same tune, and see if it improves engine longevity

 

I broke the ra seals with new 10s ....I broke the irons with 9s .and yes I felt it when it happend

 

If you are breaking RA seals you have some very serious issues with your tune.

 

+1 If you're breaking these seals then any seal will give you the same result. I'd reevaluate your Modifications and check that tune on a dyno.