Log in

View Full Version : B18c2 with 1.6L twin cam head vtec



MRB18C
17-06-2007, 03:30 PM
hey guys, i got a 95 civic running a b18c2 bottom end and the 1.6 twin cam head. im not sure weather to bolt on a 2.0L type R head to it and run the works or weather to keep the 1.6 head and work that? i have been told the 1.6 has more comp and better flow. is it a straight bolt on conversion? and will there be much increase in power? thanks.

Perry
17-06-2007, 03:44 PM
hey guys, i got a 95 civic running a b18c2 bottom end and the 1.6 twin cam head. im not sure weather to bolt on a 2.0L type R head to it and run the works or weather to keep the 1.6 head and work that? i have been told the 1.6 has more comp and better flow. is it a straight bolt on conversion? and will there be much increase in power? thanks.

U didnt happen to buy a red eg did u? anyways what u got is poors men type R setup which is very good already, and there is not a such thing as 2.0 typeR head for a b series anyways

Try search theres alot of topics discussed about this

zco
17-06-2007, 04:28 PM
therse been a big discussion about this topic already. try and search and you can find lots of info before asking

what perry said is, you have apoor man's type R/ which is true. LOL
Compression is KNOWN to be higher when using a 1.6L head.
There have also been a few articles that have proved this incorrect.

there is a 2.0L type R head but it doesnt fit your motor.

simonnowis
17-06-2007, 04:32 PM
isnt there a b20. yeh i heard the 1.6L head has better compression then the b18c, but wouldnt a b16a head be better off then the head from an eg si? im alittle confused about this to.

destrukshn
17-06-2007, 04:35 PM
b20 would be the block.

ZeForce
17-06-2007, 05:26 PM
isnt there a b20. yeh i heard the 1.6L head has better compression then the b18c, but wouldnt a b16a head be better off then the head from an eg si? im alittle confused about this to.

And the B18c head has "better" compression than the B16a head

zco
17-06-2007, 05:39 PM
And the B18c head has "better" compression than the B16a head
exactly what i stated before. many different opinions. apparently, b16a has better flor.. but BUT there are articles that proves b18c head is better.

to clear things up, here is a little bit of information in noob terms. lol

a motor has 2 main components. a Head(top half) , and Block(bottom half). You can take one block and put head from another motor as long as its from the same motor family. ie: Kfamily, B family, or D family

ie: you can have a B18c block and head. (standard)
or you can have a B18 block with B16 head.
B20 blocks usually go with B16a head.. The head is swapped because the B16/B18 has Vtec. (B20 head doesnt have Vtec)

same with K series motors. K20A, or K24A
you can have a K24A with a K20A head..

theres tonnes more technical information and all you gotta do is READ and SEARCH. hope that helps,

yourfather
17-06-2007, 05:43 PM
................ rather than just giving the dude stupid answers.

lets compare say, the p72 B18C head to that of the B16A

http://www.team-integra.net/misc/images/mods/michaeldelaney/b16vsgsrheadstock.jpg
OK, so as you can see, the amount of airflow difference is minimal (and thats a p72 B18C2 head vs a pr3 B16 head) But you gotta wonder if the heads are tested on a flowbench.

check this site out to give you real specifics..

if you just throw a B16 head on a B18C you'll lose compression.

http://www.zealautowerks.com/

MRB18C
17-06-2007, 05:48 PM
ye thanx guys

fatboyz39
18-06-2007, 03:49 PM
wow nice comparison. So what do you have now? b16a head on b18c2 bottom end? I've heard compression is the same, not any higher. The type R head and b16a head physically look the same, its only the internals that different.

MRB18C
18-06-2007, 09:36 PM
yer k thanks bro

marabaan
19-06-2007, 12:00 AM
U didnt happen to buy a red eg did u? anyways what u got is poors men type R setup which is very good already, and there is not a such thing as 2.0 typeR head for a b series anyways

Try search theres alot of topics discussed about this


going by the number plate i think i might know this car aswell.
red eg with 17'' rice rims with a clean paint job....

BlitZ
19-06-2007, 02:30 AM
1.8 r and 1.6 ek4 use the same head casting. money beter spent improving the b16a head

from what i have read
The b18c2 vtir heads have a better downdraft and it more ideal for higher comp. I doubt u feeel anything at stock or semi stock levels.
use the b20 head and you would have a crv haha

MRB18C
19-06-2007, 12:03 PM
hey also would anyone know the difference in the b16a and the ba18c2 head. by looking at them both what is difference?. i have herd that they both look the same only difference is that the b16a head is closed chamber? is there anything else to keep an eye out for? thanks:thumbsup:

OB
19-06-2007, 12:12 PM
hey also would anyone know the difference in the b16a and the ba18c2 head. by looking at them both what is difference?. i have herd that they both look the same only difference is that the b16a head is closed chamber? is there anything else to keep an eye out for? thanks:thumbsup:

one has pr3 marked on it, the other p72, above the exhaust ports..

yourfather
19-06-2007, 12:13 PM
one has pr3 marked on it, the other p72, above the exhaust ports..

lolol

EG5
19-06-2007, 01:44 PM
Also different intake manifold design between pr3 head and p72 head

MRB18C
19-06-2007, 02:01 PM
beautiful. thanx guys

fishman
19-06-2007, 02:18 PM
For maxium power out of your car i suggest you put on a v6 head out of the new commodores. It has alloytech and will give you heaps of torque from the compacity increase.

ZeForce
19-06-2007, 02:49 PM
hey also would anyone know the difference in the b16a and the ba18c2 head. by looking at them both what is difference?. i have herd that they both look the same only difference is that the b16a head is closed chamber? is there anything else to keep an eye out for? thanks:thumbsup:

The combustion chamber designs are probably the most noticable difference between the two heads. The P72 (B18c) head has much larger quench pads so the chamber isnt a full circle compared to the PR3 (B16a)

PR3 (B16a/ITR):
http://www.theoldone.com/articles/b16a_head/6%20B-16%20fin.jpg

P72 (B18c):
http://images.sportcompactcarweb.com/tech/0009_sccsuck_08_z.jpg

yourfather
21-06-2007, 01:39 AM
hmm looks pretty cool.

eg92b16a
21-06-2007, 09:13 AM
So is it better to have a round chamber or an oval one??

ZeForce
21-06-2007, 10:51 AM
So is it better to have a round chamber or an oval one??

The larger quench area on the P72 chamber prevents detonation and increases combustion efficiency, the smaller chamber also gives a higher compression ratio

MRB18C
21-06-2007, 08:39 PM
so the pr3 head should have more comp then the p72?

nigs
21-06-2007, 08:45 PM
^^
The other way around dude.

tinkerbell
16-07-2007, 08:55 PM
^^
The other way around dude.

i tis hard to tell that from those pictures posted?