http://www.osakajdmmotors.com/introhonda.htm

 

I just took a compression test and here are the results:

1 - 167
2 - 150
3 - 170
4 - 170

Pretty good numbers for 175k on this motor.

I'm still buying the B20 though

 

is it really worth swapping? i mean the stock b18b produces what 142 bhp and the cr-v makes waht 126 bhp. the trq rating is only like 6ftlbs more but that is all at a lower rpm. i am in the market to either rebuild or swap as well. i do want to build for boost later on but he motor is going to be relatively stock for now. to me it appears that i am going to have a bit faster bottom end but not as much power top end if i do this swap which actually isnt bad if you boost right away but i need to drive this thing for the nex few months before i boost it. am i going to be disappointed if i do this swap? anyone with experience in swapping a b18b to a b20b

 

it has a very similar torque and horsepower rating, but since the torque develops sooner it is more desireable.

in terms of adaptability, the restricting factor for the b20 is the head design, which just isnt enough for a 2 liter engine. i'd imagine you'd gain quite alot out of just a basic port job.

 

How about swaping the B18B head with the B20 head?

 

the b18b head and the b20b head are the same head. your best bet is to put a b16a or b18c1 head on the b20 block. its called a crv-tec and should make for a trq monster. but you will be limited in the rpm it will turn.

 

they are the same, thats why the b20 is so restricted (it was designed for a 1.8L and then strapped to a 2.0l)

 

I know about B20-vtecs, but what do you mean about the B20 being restricted vs the B18.

 

the head was designed for the b18.

the b18 and the b20 have the same head.

this means that the b20 is left with the same ports, it is an extra .2l of displacement being fed through ports designed for a 1.8l

 

by b18, he means b18b. the b18 VTEC is the b18c1. different heads, completely.