BP; Modes of Failure & Extending Life
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BP; Modes of Failure & Extending Life
Well... Aux-Bridge is looking like a bunch of hassle. So; into 4-port land I go... N/A.
I've been hearing that most BP's are lasting 25K - 60K, and I'm wondering how they meet their ends. Bridge crack? Lost corner seal? Etc. Also, if there's any way I can extend the life of the BP (5mm bridge vs. 3mm and leaving a bit more metal there to boot). Anyone that can give me some info, feel free to chime in.
I've been hearing that most BP's are lasting 25K - 60K, and I'm wondering how they meet their ends. Bridge crack? Lost corner seal? Etc. Also, if there's any way I can extend the life of the BP (5mm bridge vs. 3mm and leaving a bit more metal there to boot). Anyone that can give me some info, feel free to chime in.
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From what I've heard the main reliability problem is when using carbon apex seals. They apparently dont last nearly as long as factory seals. I think you can still use factory seals as long as you keep it under 8500rpms. By leaving more metal for the bridge it would be less prone to cracking.
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There a lot more involved than I have the means to deal with right away; bad flow on the endplates being #1
If I can make a 4-port have a comparable port-job (not quite as large, but flows better... and flow is good @ high-rpm) then a 4-port N/A might be worth checking into.
If I can make a 4-port have a comparable port-job (not quite as large, but flows better... and flow is good @ high-rpm) then a 4-port N/A might be worth checking into.
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It all depends if your going with carbon or steel Apex seals.I would suggest : Make the bridge smallish,so it doesnt go into the water jacket.(6mm or less)Dont port the mainport to the side of the bridge,only up and down,that way you will have a thicker bridge.The runners should also be left at the bridge part.The thicker it is,the longer it will last.
Steel will last a long time,the limit on it is 8500 though.You can go higher,but i wouldnt suggest it.As you know ,if it brakes it is toast.
Mines working fine with the steel seals.
Karis
Steel will last a long time,the limit on it is 8500 though.You can go higher,but i wouldnt suggest it.As you know ,if it brakes it is toast.
Mines working fine with the steel seals.
Karis
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