what's the difference and what's better to swap with?

 

In Japan there is only the B20B. In the US the B20B was used in 97 and 98, then switched to B20Z for 99-01.

All 97-98 motors are 8.8:1
All 99-01 motors are 9.6:1

The higher comp. motors have more horsepower.

The B20Z is the better motor. (Note that a 99-01 JDM B20B equivalent to a B20Z) Unfortunately it's pretty hard to find compared to the B20B. The horsepower ratings of both will increase when you swap better intake and exhaust manifolds because the stock ones are horribly restrictive.

 

also there is said to be a 9.2 cr b20b in japan also, that came in the orthio's.

Not a lot of true facts are known about jdm b20b's.

I would stick with a usdm b20z if you want to go that route

 

True there's a JDM B20B 9.2:1.

Basically the only fact about the B20 is that the USDM B20Z is guaranteed to be 9.6:1 and the most horsepower of any b20.

All the importers that sell JDM B20B's won't ever tell you the year of them so it's pretty hard to get one that is high compression.

I think, not positive, that if the motor has a knock sensor it's high compression.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MolecularIntegra &raquo;</TD></TR><TR><TD CLASS="quote">
I think, not positive, that if the motor has a knock sensor it's high compression.</TD></TR></TABLE>


I have heard of this also

 

what about the vtec oil supply on the block? is it the same as a b16 or b18c?

 

bump

 

no, its the same as an LS block. also the b20 block doesn't have oil squirters

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bambbrose &raquo;</TD></TR><TR><TD CLASS="quote">no, its the same as an LS block. also the b20 block doesn't have oil squirters</TD></TR></TABLE>

even the b20z? the b20z is vtec right? so would that mean that it has that oil passage that would usaually get plugged when doing an ls vtec



?

 

b20z is non vtec.. has the same head as an LS pretty much

 

Also, pay attention to the head. It might has a P75 head or a rare Y8R head.
https://honda-tech.com/zerothread?id=1089489