Civic EG

so i have a jdm b16a in my ej
im not that sure wether i should go
LS or CRV vtec???

which one is faster.
or better
and wat does each one consist of

you should probally just keep the b16a and with the money you dont spend on a b20 vtec or ls vtec get like cams or turbo, etc

Go for the B20. The B20 engine is identical to the B18B, just with an 84mm bore. If built the same, the B20 will have more hp. (it is easier to find 81mm pistons though)

I have been in both LSvtecs and CRvtecs(always call a B20vtec though) and both rip good and hard. It depends on what ones built better.

The B20vtec will have better torque due to more displacement, However you also have to worry about the thinner walls. That said I have ride in just plain stupid fast b20vtecs, if you are going to go with a N/A Build go with a B20vtec. If built right it can beat up on K20 swaped egs. I have scene it first hand.

However if you are going to boost, you want the extra stregth of the LS's walls. So in that case you want the LSvtec. Its easier to find LSblocks locally, There are more parts available, i.e. the 81mm pistons.

Hope that helps

so if u goin for boost u should go ls
but if u goin all motor go b20????

95civiceg wrote:so if u goin for boost u should go ls
but if u goin all motor go b20????

Yep, You got it.

LSvtec.... You're only gonna gain 3 foot pounds of tq from the B20 and a weaker wall in the block. You'll never tell the difference from the 2, at stock build.

And you can't justify all motor vs. boosting one or the other.

LS engines have 9.4 compression ratio, vs. the B20's 8.8 on OBD1 and 9.6 on OBD2... So, boosting either one will render you the same results, out of a STOCK build.

so wat would be better was these swap or a plain jdm b16

nitronate wrote:Go for the B20. The B20 engine is identical to the B18B, just with an 84mm bore. If built the same, the B20 will have more hp. (it is easier to find 81mm pistons though)

Yeah he is right i have the b20b its a good motor

boosted b16. ftw. but thats just me

neither will be better than the other one, because to get them to work well with the high rpm capabilities of the head you want to use, you will have to build the short block, there for negating what stock shit comes in what block.

Greasedmonkey wrote:neither will be better than the other one, because to get them to work well with the high rpm capabilities of the head you want to use, you will have to build the short block, there for negating what stock shit comes in what block.

i don't know B// i have a b20 with a b16 head and i go to 9500rpm all day long and it still working
PS i have that setup for 6 years now

i can vouch for link his motor pulls hard all the way up there no problems and yes he does beat it all day long

b20_link wrote:

Greasedmonkey wrote:neither will be better than the other one, because to get them to work well with the high rpm capabilities of the head you want to use, you will have to build the short block, there for negating what stock shit comes in what block.

i don't know B// i have a b20 with a b16 head and i go to 9500rpm all day long and it still working
PS i have that setup for 6 years now

I think your missing the point of my post. Reread it again maybe? I said stock B20 or B18b bottom end. Not a built bottom end like you state you have in your build thread.

i have a fully bild b20b/vtec
with 84.5mm arias pistons
h-bean connecting rods
golden eagle block guard
golden eagle sleeving
bdl revo-s pro series cam gears

That right there says you dont have stock shit, there for you built the bottom end to handle the flow and rpm characteristics of the head. A stock LS or B20 can not rev past 7 reliably. The rod bolts are meant for it, there is no crank girdle.... its just not designed to go higher, otherwise honda would let it.