Originally Posted by Fatewolf
I easily have the money for any of the engines. My main part is performance and custom aspects for the engine. The type R comes with a higher BHP but do you know if it is more customizable or tunable then the other b18 series engines or would be the same?
If you're going to be upgrading the engine the ONLY drawbacks to getting a GSR engine instead of a Type R are: Intake manifold, and transmission. The GSR comes with a dual stage intake manifold which is almost universally thrown out the window by modders. The R comes with limited slip in the trans, as well as a tweaked final drive.
But seriously, if you're going to rebuild the engines at all, all the advantages of a R vanish. The R's cams make more power, but a piddly amount more... either way you'll replace them. Pistons have a higher dome, but not enough for aggressive cams. Rods slightly stronger, but not strong enough.
The fact of the matter is that the R engine, while a trick little number, is still just a tweaked street machine. If you're going for power it'll need just as much modification as the rest of the VTEC engines.