your assumption that these are the same for all calculated CRs is probably correct.
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your assumption that these are the same for all calculated CRs is probably correct.
Just noticed that the stock B16A2 compression is off that chart... Not much safe boosting area :p
remember the chart is indicative of estimated CR's of non-intercooled setups... ;)Quote:
Originally Posted by PhatSol
Well I guess that makes intercooling on the VTEC motors *very* important then?Quote:
Originally Posted by tinkerbell
yes, exactly, any turbo/supercharged engine will benifit from intercooling as it reduces the intake air temps -> denser intake charge -> more power & less chance of pre-ignition
even more important is not using 92ron US pump gas =pQuote:
Originally Posted by PhatSol
-2ds
That's right, the higher octane, less chance of detonation and more advance in the timing you can run, leading to more power.Quote:
Originally Posted by 2ds
US 92 octane is only a touch worse than our 98 RON fuels ;)
it is better than our 'regular' unleaded...
those calculated CR's would most likely be correct (as long as theyw ere done right)
The detonation point would change depending on the effency of the turbo/intercooler
148kw atw without working internals just gasket only ... i think that acheived a bit... one thing id mention is all the tossers who said that it couldnt or shouldnt be done!
but that was my basic bolt on set up way back then. now ive put the standard size gasket back on and got forgies...and other stuff, i was hitting 130 something kw atw on 10psi, without revving past 5k!!
There are two schools of thought for boosting engines & CRatios.
U can run high CR with a long overlap cam to bleed dynamic CR.
The real reason why boost + high CR is "perceived" to be a bad idea is becuase ignition of a compressed mixture is not only harder to achieve in the same amount of time, it also becomes unstable.
Personally, after researching this topic, It's my opinion that a moderate / High-ish CR + boost and correct cam timing is more advantageous over low CR + boost.
I wonder why the B16 responds well to boost in stock form....... But what would I know right?