B18B and B18B1 What's the Dif?

[4-Door Flunky]

I'm looking on this website:
http://www.4thgenerationcivic.com/engines/Engines.htm
Both of these motors have the same displacement, same compression ratio, same fuel injection.
Where do those extra 10 horses come from?
Flunky

[Ace$nyper]

the B1 has a higher redline so i guess it's tuned for for more for power then the other not 100% sure though

[Zippy]

I am not very sure, but things like intake manifold, exhaust manifold, exhaust....you get my point.

[mellowboy]

I think thats the wrong info. Its called b18a and it has 130 hp and the b18b has 142. I believe the cams are different but thats all i know so far.

[91civicDXdude]

thats wrong. they mean B18A and B18B. the B18A has 130hp not 140hp because it has a slightly poorer head design.

[mellowboy]

Originally posted by 91civicDXdude
thats wrong. they mean B18A and B18B. the B18A has 130hp not 140hp because it has a slightly poorer head design.

Yeh thats what i was thinkin. I know it has something to do with the head. Thats ami's site. B-series info are wrong since ami doesn't know anything about them.




































j/k ami

[4-Door Flunky]

Head design, cams, that sounds about right.
I feel certain the intake manifold/fuel injection is the same, just 'cause it's so much cheaper to put the same unit on many models throughout the line.
I once saw a website that listed the cam profiles for each engine, but now I can't find it. That'd be the way to know for sure whether it was cams or head design.
Flunky
PS-Anyone know that website is?

[Melt]

Originally posted by mellowboy
Thats ami's site. B-series info are wrong since ami doesn't know anything about them.

:hehe: