NRS ceramic corner seals

thewird · 12-26-2009, 10:44 PM

So whats the word on these seals

. I'm opening my motor up which currently has your 3mm one piece ceramic seals thats been running for 32,000 km. I'm going to be putting 3mm 2-piece seals and I would like to put in ceramic corner seals if possible too. So whats the status of the corner seals? Thanks.

thewird

glassman · 12-28-2009, 03:36 PM

I have just 2 sets of 3mm 2pc seals left. Do you need a set soon? Might be a good time now!

The corner seals are on hold for now until I can get some data from Rob @ Pineapple on the 2mm set he has. We had a couple of failures with the initial two sets used so we want to start from scratch with static drag tests in a fixture and then increase loads via thicker springs to see where we can pressure to and still not exceed the factory seal for drag. Then Rob will clearance them to the rotors that will be built into an engine from there. The corner seals as made seem to fit on the tight side in new rotors (some slots can vary as much as 0.001" on the small side) so we want to eliminate any issues with binding in the slot. There were too many unanswered questions with the first two uses so Rob will head up all further testing and documentation. Likely they will be used along side factory apex seals in the first build so that they are the only change made. I will try and get an answer from Rob as to when he can start testing. He has the factory springs hard faced with the extra twist but I still need to get him the thicker springs we made and I think we'll get him to use the standard FD CS spring for best comparison. He can try the hard faced ones later.

Happy trails,
Sven

12-26-2009, 10:44 PM	#1
thewird Rotary Fan in Training Join Date: Mar 2008 Location: Toronto, Canada Posts: 37 Rep Power: 0	So whats the word on these seals . I'm opening my motor up which currently has your 3mm one piece ceramic seals thats been running for 32,000 km. I'm going to be putting 3mm 2-piece seals and I would like to put in ceramic corner seals if possible too. So whats the status of the corner seals? Thanks. thewird __________________

12-28-2009, 03:36 PM	#2
glassman Premium Vendor Join Date: Apr 2008 Location: Canada Posts: 173 Rep Power: 18	I have just 2 sets of 3mm 2pc seals left. Do you need a set soon? Might be a good time now! The corner seals are on hold for now until I can get some data from Rob @ Pineapple on the 2mm set he has. We had a couple of failures with the initial two sets used so we want to start from scratch with static drag tests in a fixture and then increase loads via thicker springs to see where we can pressure to and still not exceed the factory seal for drag. Then Rob will clearance them to the rotors that will be built into an engine from there. The corner seals as made seem to fit on the tight side in new rotors (some slots can vary as much as 0.001" on the small side) so we want to eliminate any issues with binding in the slot. There were too many unanswered questions with the first two uses so Rob will head up all further testing and documentation. Likely they will be used along side factory apex seals in the first build so that they are the only change made. I will try and get an answer from Rob as to when he can start testing. He has the factory springs hard faced with the extra twist but I still need to get him the thicker springs we made and I think we'll get him to use the standard FD CS spring for best comparison. He can try the hard faced ones later. Happy trails, Sven __________________ Mild to wild, street to strip, when you want to go fast and you want your engine to last, NRS Ceramics is the only way to go. NRS Rotorsports nrsrotorsports@shaw.ca www.nrsrotorsports.com