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Engine Specific Info and Questions => IDI Engine => Topic started by: RunninWild on October 18, 2018, 07:15:34 pm
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How much boost can stock internals handle? I just took my taco with a freshly rebuilt aaz with arp head and main studs and its making 34psi with my holset he221w. The thing flies but I think this might be a bit much for it? I'm upgrading to an alh in the near future but I need to sell this without a hole in the block 😂
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With stock boost about 10 psi max, you must be pretty close! ;)
Close to "Bang!" that is.
I'm the wrong one to ask, as I find walking much slower than a slow, but working, car. ;D
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My old AAZ lasted 6 months at 40psi with a t3. But it had stock studs. It suffered the common cyl#3 main rod cap failure. I’ve seen it happen to quite a few. The early 1.9s had weaker mains (so I’m told) and with a lot of boost it tends to crack them and shoot them through the block
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My old AAZ lasted 6 months at 40psi with a t3. But it had stock studs. It suffered the common cyl#3 main rod cap failure. I’ve seen it happen to quite a few. The early 1.9s had weaker mains (so I’m told) and with a lot of boost it tends to crack them and shoot them through the block
I have acquired an aaz that had exactly this happen to it.
Big hole in the block.
What is the likely-hood that the cylinder head will still be ok after this catastrophic failure? I've not disassembled the engine to look yet.
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max boost really depends more on the turbo and how much fuel is going with it.
40 psi from a stock t3 is going to be a lot harder on an aaz than an he221