Strengthening an Apex Seal: Please Read
#27
Full Member
Joined: Jan 2002
Posts: 170
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From: Winnipeg,Canada
I for one would be very intrested in getting more info. on their way of shotpeening seals because when we tried it we got back bags of bits. I do agree that IANETTI seals are way over priced but have found that they do work better than stock seals .SO,how about a post on how they do it.
#29
So i'm talking to the guy who's shop is gonna build my enigne and this man there say's " I would stay away from Ianetti seals". Apparanlty their long term reliability is still undetermined. Sure racers use it but they redo their motor more often than we would like to. The problem lies in the manufacturing process. The industry can't seem to manufacture the carbon's strength evenly throughout the entire sheet. This is funny, because his shop sells them. ( the man who said this, not the guy who's building my motor ) Sometimes they take severe punishment, and sometimes they just blow for no reason. Perhaps in the future they'll be more reliable, but for now i'll stick just stick single piece steel, since that's been proven.
#31
Hi guys,
I design shot blasting/shot peening machines so I thought I needed to add my 0.02 worth. First of all, it is not a bunch of bs as some would think. Our company supplies shot peening machines for numerous applications particularly, aerospace automotive, military etc., where surface properties are critical. Yes, shot peening will greatly improve wear resistance at the surface without adversely affecting other mechanical properties. Other processes such as heat treating will harden steel through most of its thickness and not just the surface but they affect the other properties. As an example, you can greatly increase the hardness of steel by heating and then quenching it but you will make it more brittle. So you improved wear resistance of the seal but now it is more prone to fracture due to detonation. I think that would expalin why a lot of japanese tuners resort to shot peening, it's cheap and effective.
I design shot blasting/shot peening machines so I thought I needed to add my 0.02 worth. First of all, it is not a bunch of bs as some would think. Our company supplies shot peening machines for numerous applications particularly, aerospace automotive, military etc., where surface properties are critical. Yes, shot peening will greatly improve wear resistance at the surface without adversely affecting other mechanical properties. Other processes such as heat treating will harden steel through most of its thickness and not just the surface but they affect the other properties. As an example, you can greatly increase the hardness of steel by heating and then quenching it but you will make it more brittle. So you improved wear resistance of the seal but now it is more prone to fracture due to detonation. I think that would expalin why a lot of japanese tuners resort to shot peening, it's cheap and effective.
#33
I have heared of good and bad with leneti seals the ceramics are the best one the market. The ceramic has self lubricating properties and can take a very high spring pressure without more wear due to these properties. They at first had problems not letting pressure underthem to help seal but, have since fixed this problem. They can't take more detonization than stock to my knowledge but can handle 45 psi to my knowledge. this would give you a monster of a daily driver because of the less wear, just be ready to fork over $1300.
my 2 cents
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Jeff20B
1st Generation Specific (1979-1985)
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09-16-18 08:16 PM
0000019113, apex, connecting, cryofreezing, cryogenic, engine, epex, internals, rods, rotary, seal, seals, strengthen, treatment, whats