would like some input on what you think the possiblitys are for a b20b compared to a b20z. iirc the b has lower compression than z, so im assuming its more friendly to boost. is teh b20b realy that much better? also how do those 2 compare to boosting the b18 motor.

thanks.

there would probably be only a small difference in safe boost levels between the b20b and b20z, either should take a pretty good amount though

as compared to the b18b the main difference is the cyl. sleeves. the b20 has a one piece design that is supposed to crack easier than the b18b (more heat build up between cyls. shared wall is thinner and therefor weaker)

as a slight side question... of course the stock b20 intake can not be used in a civic, but it is possible to just slap a different intake on the same head and go right? no one really says much about doing that with a b20. its always change head/intake to b16, b18c, etc. well how about you leave the internals stock and don't do a head swap. instead you throw a b18b intake on the b20 and put a turbo kit on it. wouldn't that be a pretty nice little set up?

considering it is now almost 3 am I am starting to slip on grammer/spelling. sorry for the errors

yep, ls intake on a b20 head. i know a few guys that are doing exactly that. one is running around 300hp with rods and pistons and the other can run 11lb boost on stock internals.

i was interste in what ppl here might say. ... honestly iirc the b20z runs high compression so i dint think it will be able to handle boost safely as its older version.. im talking about running stock motors, and in stock form the b20z has 10 more hp than the b version, probably due to highter compression. ...

so would you guys say that the b18 would be a better way to go if one wants to turbo the motor?

Is it true that an i ntake manifold on a b20b will fit in a civic just not one off a b20z?

i meant a b20b will not fit in but a b20z will

all the b20 manis i saw were tall. ls is commonly used.

i did the b20b swap on my 95 civic and i used the ls intake manifold and tranny. i picked the b20 insted of the b18 for 2 reasons one being that i was going turbo and the b20's comp. of 8.8:1 was great. the second reason being that when u turbo ur motor and u have vtec u will tend to spin ur tires all through vtec. so i stuck with the stock head and internals and i run 11lbs daily driven.

umm im just curious if i have a stock b20b with a LS trans and cold air intake, what i could run in decent conditions and decent drving

will a B20Z or B intake fit on a D16. just wonderin. would it be better or worse than a GSR intake manifold.

no B series manifolds will fit onto your D16, and a GSR manifold wont bolt up to a non vtec B series head or a SI/ITR head. but the B16/18C5 manifolds interchange. and the B20Z doesnt have high compresion, just a bit higher, its still 9.6:1 which isnt very high. you could throw boost on that fine. I am dropping a B20b into my teg soon with 11:1's and the LS cams/manifold/tranny. I am ten going to take my B18 to 84mm so it is a B20 pretty much and drop in some forged internals/9.5:1's and slap some boost on it. and I had once heard that the intake manifold from the B20Z was shorter that the one on the B20B but I have never seen it so I dont know, you could go to a honda dealership and look under the hood of a 97-(99 i think) CRV and then the 00+CRV and see if theres a differnce in the manifolds

so you guys are saying that it is better to just turbo the b20b engine, with an ls head on there? cuz i was thinking about doing this swap, then i thought about doing ls/vtec, but i am very open minded. please help me out, thanks

i have seen very fast ls/vtecs and cr-vtecs befor so it really comes down to what u really want for ur money.

which one is more reliable, cuz i heard that the vtec ls and b20 blocks aren't always that reliable.

i heard the samethings befor i did the swap but i havent ran into any problems so far.

I have a b20 too but it's an 88 prelude in top condition. Was wondering about what turbo is easier to install (like is there bolt-ons)?. I have a good knowledge on motors too so i could probably do a custom install. I just dont know about the turbos.

Thanks

sam

it is not recommend to bore out your ls more then 81.5 on stock sleeves, if your getting your blocked sleeved then 84mm is fine but just remember the more you bore the less boost the sleeves will handle thats why it is not recommended to go over 84mm but 83mm is more recommended because if you melt a piston you have room to bore to 84mm.

it is rumored that b20 cylinder walls crack under boost conditions, probably because of poor tuning, but since it is bored to 84mm it seems it would be more prone to cracking under high boost.

and on deciding to go ls vtec or just stay non vtec, well i say its all a preference. but you will get more hp out of a ls vtec then just a regular ls

i wanan go non vtec because everyone goes vtec so i want to build a non vtec motor

can someone help me install my intake