what can be done with this?

Smeltej25 · Post by **Smeltej25** » November 12, 2004

ok, a dohc vtec b16 bottom combined with a b18 head, what can be (excluding internals) for horsepower gains? keepin it NA though!
is this a good setup to start with? i dont really know a lot about hondas yet so im just wondering what can be done with this engine in terms of power.
and some questions!!!
-the b16 and b18 have the same bore but the b18 has a longer stroke right?
-the b18 heads should flow better for the added displacement, it would make sense, more displacement needs more air?
-is the squish area (the area where the pistons meet the top of the cylinder head) for the b16 and b18 heads the same? if the b18 is larger, that would mean that the compression on this specific engine would be lower than a stock b16?
-if it is smaller for some reason, then the compression would be greater meaning that it would have more power than a stock b16.
someone correct me if im wrong here!!!
:twisted:

munster · Post by **munster** » November 12, 2004

Holy questions, batman. First, I'm going to ask a question...why the b16 bottom with the b18c head? Do you have these parts laying around?

Ok. B18 has a longer stroke. Correct me if I'm wrong, someone, but I believe the B18 has a smaller "squish" area.

Smeltej25 · Post by **Smeltej25** » November 13, 2004

well, thats the setup on a car that i might buy, but i want to know if that is a good setup so far and if a lot can be done with that.
i always thought people did it the other way around using a b18 bottom end with b16 heads?
if the b18 has a smaller squish area then, that means that the compression would be raised...
also that means that with aftermarket cams i would be worried about piston to valve clearance?
anyone have specs on b18 heads, normal lift and duration and other things like that? and specific stroke for the b16? i asked on some other honda pages but no one wants to give me any answers

if i can get some specs for these parts, i could go from there with it cause i really want to get this car!!! the legacy just doesnt cut it performance wise!

sfc · Post by **sfc** » November 13, 2004

people do do it the other way around. Sounds to me like whoever you're buying this from got the ass end of someone else's b18 swap.

I would also venture to guess it's a b16a bottom end but a b18b head which is complete shit. And if so you should probably stay away from it. A b18b head on a b16 block would be complete shit.

Smeltej25 · Post by **Smeltej25** » November 16, 2004

b18b head? what different b18 heads are there? all vtec or no? cause this one is i know that....
but this engine wouldnt be a good one at all?

munster · Post by **munster** » November 16, 2004

I thought you were referring to a B18C head on a B16. If it is a B18b head on a B16 then you are actually losing alot of potential hp.

B18c = vtec
B18a/b= nonvtec.

Post by **BRYCE** » November 17, 2004

All i know is that b18 head is shit compared to b16 so, it would be better if you had the b16 head on there

Smeltej25 · Post by **Smeltej25** » November 18, 2004

munster wrote:I thought you were referring to a B18C head on a B16. If it is a B18b head on a B16 then you are actually losing alot of potential hp.

B18c = vtec
B18a/b= nonvtec.

yeah it guess it would be the b18c head on the b16 cause it is vtec....
i told the kid today that im not going to get it, it sounds like this engine isnt really as good as i thought it was going to be

well, im sure ill come across something else... i really want to get somethin to work on.

munster · Post by **munster** » November 18, 2004

You could have bought that. Sold the block and bought a 1.8 block.

Just sounded really pieced together to me. Did he give you a reason to why he swapped heads?

Smeltej25 · Post by **Smeltej25** » November 21, 2004

nah he didnt say why... he didnt really seem like he knew to much about it at all, so maybe its best that i didnt get it