it's stamped on the head. there are 2 or 3 "dials" stamped in and a circle that says the year in the middle of the head. check that and that was the year it was manufactured.
thats what the h23vtec build essentially does. but it's never reliable(1 in every 50) and it doesn't make as much power.(mainly because nobody really goes all out on them).
unfortunately the import aftermarket that we have has overlooked h series motors for the longest time and are just now...
manifold/tb=250bucks
mild p&p=250
type s cams=550
type s pistons(with rings)=350
brand new quaife lsd=700
2100 bucks. for a far superior setup. i have a better flowing head and i have better traction(quaife lsd).
and thats going after a setup much like the type s stock.
i could turn that...
basically it's like "stroking" your h22. more displacement etc etc. in the idealists mind. it combines the best of both worlds. the early torque produced from the h23 and the highend power of the h22.
when built right. it is very powerful. when built wrong. cranks snap and rod bearings spin...
so basically the (roughly) 2500 dollar difference between the h22a and the type s. you are saying that you can't do any better?
lets look at the main differences here.
cams
pistons
Intake manifold
throttle body
lsd
port and polish.
yeah i'd make more power with a good ol jdm h22a.
atts sucks period. if you expect to boost. get a base model 5th gen. and if you try to swap the h22a4 with the atts unit. it will not work..(well without a lot of custom fabbing) IMO i'd just get an lsd tranny.
all type s's were lsd. it was a standard factory unit. if you get a motor without the lsd. then you got screwed because that is the only tranny used with the type s.
it rocks for an lsd. it rocks for drag launches. then you realize a month later. you just busted your differential because of a poorly made lsd. go with quaife
the sh and base header designs are different. the sh is a larger header as far as the merge collector goes because it has to clear the crossmember and the atts unit. so yes an sh header will fit ont he base. but if it were me. i'd rather have the header designed for my car.
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