Originally posted by honda_pilot
Agreed. An LS offers much lower compression than a GSR. Lower compression offers a turbo better effectiveness and efficiency. The LS block is a much safer engine to turbo, provides a torque-ier powerband when turboed. When going f/i on a GSR higher compression engine, detonation becomes a much bigger issue, hence people saying those engines will "blow" after a much shorter period of time. To everybody their own, personally I wouldn't turbo a GSR I'd go N/A with that. But I would definately turbo an LS, do some research and see what kind of numbers those engines when properly built and tuned will pull. Hope that helps some...
Shingo knows his shit and doesn't go around *acting* like he knows a lot. He's humble and doesn't bother to argue with people who think way too highly of themselves in respect to cars to believe or take into consideraton of other peoples thoughts and opinions...so :slap:
I practically wrote this post in my head while reading all the other posts saying one is better than the other without proof!
Damn you Honda_pilot for beating me to posting it!:fawk:
The lower compression on an LS/GS engine is much more boost friendly than the higher compression of the VTEC b18c engines. Not to mention that with a VTEC head you get a lot of blow by with forced induction when VTEC kicks in. From my understanding of VTEC there is a slight overlap on the exhaust and intake cams where the valves on the intake start opening before the valves on the exhaust are closed creating a vacuum sucking in air...with FI this is not needed and alot of air is "blown by" because it is being both pushed and pulled into the piston chamber.