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Originally Posted by deep throat ^^Ofcourse^^
It's illogical to T/C or S/C any NA engine without rebuilding it to handle the extra stresses that weren't in the engineers' minds when they built the engine. They didn't build it with a safety margin for FI IMHO.
So when the reliability question is laid down the table, whoever asks it must say "provided the engine has been prepared to handle the charging AND will be tuned". Now, after these are granted we can attack FI reliability. But never rise an eye-brow when a BMW engine blows to pieces and say it was the turbo or the S/C!!!! Have you made sure your engine has gone through the "fortification" process prior to charging? Have you dyno-tuned all the parameters on the dyno before you hit the road??
So, granted these preliminaries are satisfied and the correct boost is chosen, how reliable and engine-friendly is Forced Induction? |
not entirely illogical. like i previously mentioned we did a stock gsr 11:1 cr motor with T3 super 60 at 10psi. we just tuned it so that it was safe. when you get into aftermarket forced induction tuning you find that you pretty much tune any setup to be safe. some may be harder than others, some may give small to no yield after tuned to safe perameters due to their original construction but never the less you can still force feed an NA motor without doing internal work and be safe. its not impossible, its not even that hard in a lot of cases. i've only done a couple hig performance turbo apps on motors built for the boost, every other singles engine i've installed, built, and or tuned a turbo kit for has been stock NA internals. you just have to do lots of homework and go further into the workings than most ppl are willing to. some cases i even went as far as to find out which years produced better motors due to different metallurgy from different sources of mineral from year to year with certain vehicles or manufacturers. there's a lot of research involved, and yes (i know someone's going to say it), you might as well just rebuild a motor to the spec that you require for the forced induction application you intend to use and your driving style. sometimes, actually most of the time, its better just to suck it up and spend the money. most of the time tho me personally i like to just make it work the way most tuners would cringe at.