just as the title states, both motors are cheap cheap cheap... what do u guys think of a b20 block mated with an b18b head? how would it perform? pass smog?

 

probably not pass smog in CA - er, no it won't.

As for how will it perform, I haven't seen the numbers yet, but it's questionable. Reving the B20 bottom end to the LS redline is a questionable business. However, it's basically going to bolt-up and you'll get a nice bit of displacement out of the B20 bottom end. However, you'll be making less power if you use stock B20 or B18 pistons as you will have a lower compression. So you will need to use some kind of custom piston to bring up compression to really take advantage of the B20's larger displacement.

- Nathan

 

ah i see.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92Lx &raquo;</TD></TR><TR><TD CLASS="quote">probably not pass smog in CA - er, no it won't.

As for how will it perform, I haven't seen the numbers yet, but it's questionable. Reving the B20 bottom end to the LS redline is a questionable business. However, it's basically going to bolt-up and you'll get a nice bit of displacement out of the B20 bottom end. However, you'll be making less power if you use stock B20 or B18 pistons as you will have a lower compression. So you will need to use some kind of custom piston to bring up compression to really take advantage of the B20's larger displacement.

- Nathan</TD></TR></TABLE>

^^?????

the LS head is almost identical to the B20 head. the redlines are almost the same with both motors only with the B20B motors redline comes at an earlier 6200.

check this site out if you want to learn a bit more on the LS and B20 heads and their compressions.
http://hybrid2.honda-perf.org/....html


sorry, correction you guys are right about the smog.


Modified by shermanyang at 6:10 AM 1/18/2005

 

You cannot referee a B20 in an Integra here in CA because the B20 is classified as a Light Truck motor because it comes out of the CRV. If you got a smog hook up then I guess you are ok.

 

definitly not smog legal in cali, as previously stated... on the other note, i wouldn't advise that combo, but some here might disagree.

 

Thats lame, B20 is a light truck motor, but an H22 isnt

 

if yer gonna swap in a b20 block why not vtec it?

 

Most B20s and B18s use the P75 head, no difference between application. There is also a P8R head used on a small number of B20s which is supposed to have better flow characteristics. Early B20s had 8.8:1 compression, later ones were 9.6:1, and there were a few at 9.2:1. You can either buy custom pistons of mill the block or head to raise compression.