love my NRS apex seals/springs.
i recently dis-assembled my motor that ran in 09 and found the rotor housings literally looking exactly like they did when i assembeled the motor. no trace of wear anywhere.
the seals/springs looked unused. the motor was making 507 SAE rwhp at 20 psi w around 20% methanol.
the motor was steadily gaining compression during the year and could have easily reassembled as was. i took it down to swap the rear iron for an automatic rear plate as i am switching to a T56 for my 200 mph run at the Texas Mile.
thanks NRS!
howard coleman
www.colemanprecisionrotaries.com