11-03-2011, 12:51 AM
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#47
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Enjoy it, destroy it.
Join Date: Oct 2009
Drives: Datsun Racing Hen
Location: Blank Generation
Posts: 820
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Quote:
Originally Posted by Ryephile
12.5:1 static CR with good DI is not a real problem if you want light boost. A quick calculation tells me that with 93 octane, 10PSIg boost would be plausible for a tuned-to-the-edge-but-still-reliable setup, assuming IAT's are kept rational and the knock control as as good as anything from the past 10 model years.
That said, just because the combustion chamber might be able to handle the BMEP, doesn't meant the piston lands, wrist pins, con-rods, crank, bearings, block, head gasket, or cylinder head can handle the increase in BMEP. There is always a fuse, a weak-link, and it'll take testing, measurement, and trial-and-error to determine what's the weak links are to reliably achieve the power level you're interested in.
Since most tuners have minimal real experience with DI tuning, there will either be an influx of amateur engineering experiments flooding the market, or there will be a slow ramp-up by competent tuners that take the time to do things right [which is rare, especially with an affordable car]. By all means, buyer beware!
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Well said, and spot on.
And exactly why I am hoping TRD offers a plug and play option sooner than later.
Instead we get three sets of wheel options.
Sigh.
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