Okay so I have a '95 DX hatch and I plan on doing a swap soon. Right now I just have a stock d15 non vtec, but sitting on the side i have a b20z2. I've heard that the b20's and thinner cylinder walls and can't stand high RPM's and I want to do an all motor build non vtec. I was wondering if I should just go with a b18 or the b20??? help please. thanks.

 

Why, please tell me why you need high rpm?? It won't give more power on either of those engines. The B20Z does NOT have thinner walls, and it is a very good engine, and makes a good chunk more power on the street!

 

I know higher RPM's doesnt give me more power, but it makes my power last a little longer in my opinion. So you're saying that the b18 and b20 are just about the same??

 

Sorry, but power for longer? The B20Z makes power a LOT earlier, and continues right to redline at 6700rpm.....i would hardly call it a smaller power band. So what if you shift earlier, the power is waiting for you again in the next gear up

and no, the B18 is a fair bit weaker than the b20

 

Now it makes sense! b20 has more torque. Now I get why it has lower RPM's. So to go back to the cylinder walls.. I've heard from a hand full of people that the b20 has thin cylinder walls, you seem pretty experienced so I just want to know your info about.

 

I used to run a 96 civic hatch with a 2000 model b20z...it was awesome, and made "way" more power than the b18b

Who ever told you the wall were tinner, has no idea what they are talking about The walls are simply mounted differently, but are NOT thinner...you must educate those talkers, lol

here's a pic of a B20Z shortblock

 

Thanks for the info man. Did you do an all motor b20z?

 

Ok to answer that I can only tell u what I know from experience. I have 97 hatch I did a bswap with B20Z2 and I have had no problems with running high rpms and I have had it running on a steady 7000 with no falter as far as the b18 goes I don't know hope this helps some