I am trying to decide which route to go for my 99 LX, she will never see boost, or red lined past 6k.The thing is as much as i would like to build a b20 ls,this dam block is proving to be hard to come by,all the pick and pull yards a loaded with b18 engines but not b20's,i have been holding back because i feel i would make better power with the b20 compared to the 18. What are your thoughts would the b18 ls make resonable power compared to the b20, its gonna go through a complete high compression rebuild the right way .

 

So whats the point of a high compression rebuild, if its never gonna be reved past 6k rpm?

Considering the b20 didnt come in a ls, that may be why you are having a hard time finding one. Are you even looking in the right car? B20's came in crv's.

A b20 and ls are basically the same thing, minus different intake manifold, cams, and the b20 is a ls block that has a bore of 84mm instead of the ls 81mm.

If you are set on a b20 and simply cant find one (*hint they are online EVERYWHERE) just settle with a ls, bore it to 84mm...and theres your b20.

 

i was thinking the same thing the b20 comes in a honda crv which is an suv.
the b18 comes in an acura integra gs and ls hence it being incorrectly called an "ls" i prefer displacement on honda engines always. Definatly if it is on two non vtec motors.

CLIFFS:I say go for the b20. Its probably alot easier to find an unmolested crv in a junkyard than an integra

 

sleeve then bore. you can't do 84mm on stock sleeves.

 

^true true...forgot to add this.

Max bore on ls is 82mm before re-sleeveing is needed.

If he is going for a high compression build the "right way"...that should fit in with his budget haha

 

Noobs go read something.

 

Y'all hitting me hard,certified tech by profession I know b20's came in crv's ,did not think I needed to state the obvious.Just needed some input on if it was an option would the b18 compare to the b20 in terms of performance. Sick of waiting for a b20 to come by,wanting to start that build before it gets too cold around here. Leaning towards pulling a b18 at the junkyard and go from there,already got a b16 head.Plus the b18 short block would only cost me $100.00 compared to purchasing a b20 online for $700.00, and I only need the short block

 

what is a b20 ls then?

 

-Dont care what you do for a living...isnt related to your post

-Your thread title says b18ls or b20ls...there is no b20ls so thats why we were kinda asking if you were looking in the right place. Not saying stating the obvious was needed, but when something dont make sense, its ok to raise the question.

-Your not supplying enough info in terms of your goals with the setup...

If your simply trying to see the comparison...
stock b16 head on stock b18a1/b1 block = 1834cc and 9.98:1 CR
stock b16 head on stock b20 block = 1972cc and 9.16:1 CR

Whats more important to you interms of a stock motor? More displacement? Or more compression?

 

Let me try to clear this up, would it be worth it to build a b18 or should I just hold back till I get a good b20 short block. I can get a b18 short block dirt cheap,but not a b20. It will never see boost or red lined past 6k, I just need a reliable daily driver with a ill punch that's it. I have acquired a gsr tranny and a b16 cylinder head,just need to decide so I can start buying my internals.

 

Revving only to 6k is pretty useless but if ur stuck on that then go ahead, anyway if you just want a little more power you should sell all that and turbo your single cam. way more power than both the Ls or the b20.

If you are really stuck on the all motor route then ideally the b20 would be the better choice. but if you are stuck on how cheap the ls blocks are then just build an LS block. all depends on how much you want to spend.

 

Got a 1g dsm already in the process of a build right now,hence the reason i said my ek will never see boost

 

Turbo is nice if you want fast or in the case of a single cam quicker than miserably slow.

If you want a torquey daily driver that's pleasant to drive minus the headache of dealing with turbo issues and shortened engine life then get a b20 or b18.

 

Exactly my thoughts just trying to see if the b18 would make a reasonably powered all motor comparable to the b20. People may think i'm being cheap cause i said i can have the b18 relatively cheap over the b20,but i am in the middle of my talon build,so i'm not trying to go really over board on the EK build. Definitely need more power than the d16 can put out,it feels like i dropped an anchor when i turn the ac on when driving this thing lol.

 

id get a 1.8 LS and be happy. not that much of a difference and if u are having trouble finding the 2.0 L then just settle and start. like they said, bore it and sleeve it, its the same thinggg.