LS/VTEC - Honda Forum / Acura Forum

OracerO · 07-18-2002, 09:02 PM

aight ppl, i've just gotten an 95 LS, i know nothing about integras

i used to have a civic, but thats not the point. i want to know if i want to make it into a Vtec wht head should i use?...the b16a? or b18 gsr head?
wht is the b16a head? the sir?
the b18 head is the gsr one rite?
wht head would be the better choice?
and wht else do i need w/the head in order for it to work perfectly??

thankz

LScivichb · 07-18-2002, 09:16 PM

first off....
the B16A head is off either 1st or 2nd gen SiR's and also can be found in some Del sol's known as the B16A3
1 gen B16a1 or B17A(92-93 GSR)
2 gen B16A2
Del sol B16A3
Best used because of better flow through the head

and it will tell you on the head it self it should say above the exhaust ports PR3-1( 1 gen) PR3-2( 2nd gen ) PR3-3 ( 2nd Gen usdm delsol

the GSR head is a B18 head and it will also say above the exhaust ports P72
not good in the flow ports ... too restricted..

Type R P73 code

Perfrect flow through the ports...

your either better off getting a Type R head.... or if your low on doe get the B16 head and put the type r valvetrain in it, almost like a type R head.... just more affordable

also to get the head ot fit right you have to re-locate the dowlpins to the other side .. also tap the oil line and plug it.... get a machine shop to do all this stuff..... there experts in the field or doing that stuff...

go to : www.c-speedracing.com they have a good article about it
i think they got it from www.diyracing.com?? im not sure if that is the site they got it form... but c-speed has a better way of tell ing you.

hope that helps

B20T · 07-24-2002, 09:50 AM

which ever you can get your hands on for reasonable price, but you also need the ecu for the head that you get. Type R head is the best I say, but it's spendy with ecu .make sure you get the whole assembly.

clayton · 07-24-2002, 10:46 AM

OMG we need a sticky about this!!!

91CivicSiR · 07-24-2002, 10:49 AM

Whats the Diff between a B16A2 and a B16A3? (never heard of a B16A3 before)

i5xSwipe · 07-24-2002, 10:59 AM

The ls is b18b 1.8L, a b16 head 1.6L, the head from the b16 can fit a b18? The engines are different sizes.

JAYMAN320 · 07-24-2002, 11:16 AM

B16

-good air flow characteristics
-capable of adding ITR intake manifold
-combustion chamber is not that tight to that of a b18c1

B18c1

-air flow characteristics are not that good as a B16
-Uses Dual-Stage IM, can be upgraded with a Single Stage IM(Skunk2 )
-combustion is tighter, which yields higher c/r

B18c5

-Hand p/p
-ITR valvetrain
-All around good flowing head

It all depends on you and the availability of the heads, most likely youll find a b16 head. All heads are commonly alike, they are different beacuse o the internals in the block.

*by randyman

Shane · 07-24-2002, 12:14 PM

well im not to familair with ls/vtec, but just a question. wouldn't you have to replace the cams too? because isn't that what vtec is all about, switching over to a differn't set of cam lobs? and the ls cams dont have the lobs that you need? i am just curious about this because i always here people talking abotu the head and which is the best, but no one ever mentions cams.

JAYMAN320 · 07-24-2002, 12:48 PM

Quote:

Originally posted by Shane
well im not to familair with ls/vtec, but just a question. wouldn't you have to replace the cams too? because isn't that what vtec is all about, switching over to a differn't set of cam lobs? and the ls cams dont have the lobs that you need? i am just curious about this because i always here people talking abotu the head and which is the best, but no one ever mentions cams.

yes...thats what you need vtec cams. The reason why people talk about which head to get is because that is the primary part of the ls/vtec setup. The head is what makes the big difference. If you see the graph above...its a b16vsb18c1 head with identical cams. Its not only the head, you're also forgetting the IM design. The one with single-staged runners or the one with dual-staged runners. Better air flow or tighter combustion area is what makes the difference and imprtance in which head to get with ls/vtec.

Adding different cams will make different power...but thats a whole new subject.

eppo · 07-24-2002, 06:09 PM

i have a 2001 LS, and know a guy selling a 99 gsr head, are those a good match? good for added hp/reliablility?

JAYMAN320 · 07-24-2002, 06:45 PM

Quote:

Originally posted by eppo
i have a 2001 LS, and know a guy selling a 99 gsr head, are those a good match? good for added hp/reliablility?

I have it on my setup...good head, and since its out might as well p/p it, upgrade the valvetrain, clean it up, many optons.And since its out you should concentrate on that could youll save time and money in the long run.

eppo · 07-24-2002, 07:02 PM

sounds like a good idea, but i was wondering, i want the car to pass immissions inspection, so should i really change the cams, or are there some that i can get that will not make me run too rich to pass inspection. what are the pros and cons of port and polish?

eppo · 07-24-2002, 07:06 PM

was also wondering what stuff on my car now will i have to replace when i get the new head, i know i will need a new intake manifold, would my AEM CAI still fit? would my greddy 4-2-1 headers still fit. want the head swap to go as smooth as possible.

rufus`` · 07-24-2002, 07:42 PM

there sooo needs to be an ls/vtec sticky somewhere... this has been explained too many times.

1Greyteg · 07-24-2002, 08:31 PM

STUCK!!! by popular Demand...

Now, make it all as clear as possible and when I have more time I'll edit and add my own info.

A.