the engine and car i have right now is a b16a and a civic coupe, and i am about to get a honda integra type-r or just the american version.
i want to be able to get good power through a large rpm band. the best replacement for displacement is revs. i am confident that the engine would make more power at higher rpm than stock or around just 9000. I dont know if you noticed but many tuners increase rpm to get more power.
the gsr is similar to the type-r and does have good geometry but not for VERY high rpm.
I am going to run octane 107 or 105 (i forgot which one) in it. its around $5 a gallon. but i am not going to be reving that high all the time. its part daily driven. i thought about the type-r engine b/c is has features that other engines dont have, like oil coolers, girdle, oil squirters, etc. and i like the type-r gear ratios and want to get a jdm front integra, so itll be much easier to buy the type-r than get a usdm integra gsr and get the front converted, and add stuff to the engine that is standard on the type-r.
from what i understand a greater power to weight ratio is better.
I am going to need all the power to beat people in this town, mostly turboed rx-7, turbo 240sx with sr20s, and the biggest is them damn supercharged corvettes and turbo nsx's.
power levels ive seen in b-series (b18) with stock geometry uses methanol, breaks down every 5 races, has a redline of around 9500(b/c of its geometry), and is running +40psi. the f20c would be an easier engine to push that high with stock geometry, but i dont want an s2000 b/c i wanna be able to carry more than one passenger.
since the b16a head doesnt fit on the b20a5, then thats out of the question.
thanks for the feedback though.