which head? b16 or b18??
 

i've got a b16a2 and someone might want to trade heads for a b18c head. should i do this? i've always heard that the b16 head flows better, but i'm not sure that this is true. also, with a b18c head, i could get a b18c shortbloc for a reasonable price and have a b18c for cheap, or would it be just the same if not better to put my b16 head on a b18c block?? let me know what you guys think.

http://img.villagephotos.com/p/2003-...4/DSC01730.jpg

http://img.villagephotos.com/p/2003-...4/DSC01729.jpg

Re:which head? b16 or b18??
 

i think gs-r heads are a little different. they dont bolt up to a b16 IM because of the butter fly valves ??

BUT if you can get a b18b SB and a gsr IM u could have a gsr ;)

Re:which head? b16 or b18??
 

really?? i thought you could put any b head on any b block?? i don't want to pay for it because he wants 400 for it, i was just gonna trade and then buy the shortblock, and have a gsr, but if i bought the head and the block, i would end up costing me about 800 bucks prolly, which isn't bad, but if i was going to spend that much, i would turbo the b16 (sooner)

Re:which head? b16 or b18??
 

you know how the type R manifold is different? I think its the same deal with the b16 where it wont bolt to gsr heads.

b16 bolt to c5 head and viseversa but a neither go on a c1 head due to butterfly valves.

Mind you this is all speculation.

Re:which head? b16 or b18??
 

yeah, i know about the i.m.'s being different, i'm just talking about putting the head on the b16 block for now, i know i couldn't use my b16 i.m. (it's an even trade), then sometime down the road, gettin a b18c1 shortblock, i see them go for about 400, then i would have a b18c1 for about 400 bucks, i'm just wondering if it's worth it, or if the heads are basically the same, if that's the case, i won't bother cause my plans are built b20 or ls bottom. i was just wondering if this was another alternative.......

Re:which head? b16 or b18??
 

i think the b16 head flows better then c1, but not as good as the c5 head. also. the butterfly valves on the c1 head would require a different ecu or to be removed or block somehow.


IMO, ,get a b18c1 block

Re:which head? b16 or b18??
 

so you think i should just keep my b16 head and maybe get a c1 block if anything? or just stick with my original plans and build up an ls or b20 (prolly sleeved, but at leas pinned)?

Re:which head? b16 or b18??
 

I would keep the b16 head and get a b18c bottom end. Increaseing your displacement for cheap is hard to do. Then you dont have to deal with the headakes of trying to figure out the sencond valve and what not. depending on the cost of the long block, i would almost go and take the head off and sell it on ebay and get $$$$ and have it prety much pay for the block. But you know, a nice ported and polished b18c head would be nice. Jeff runs a GSR head but i am unsure if its a B17a1 (basically a b16a) or a b18c.

Re:which head? b16 or b18??
 

yeah, he's got a b18c1 head, but hey, he got it for free :-\ yeah, i always heard that the b16 head flowed better than a b18 head, i just wasn't sure. you think a b18c block with a b16 head would make more power than an ls block with a b16 head??

Re:which head? b16 or b18??
 

thats a good question! what is better anyways? a ls/vtec is b16 head and ls bottom end to get better torque. well with the b16 head and a gsr bottom end you're still getting more torque and a 1.8 displacement so......What is the main difference in the b16 head with a ls bottom or a gsr bottom?? you're still getting 1.8 displacement and more torque but since the gsr is already equipped with vtec....dont you think the gsr would be better? plus, the bad thing about the ls bottom end is that its not made to rev high like the vtec so the bore and stroke on a gsr would be better, right???

Re:which head? b16 or b18??
 

LS w/ b16 head makes more tq b/c more disp.
i think b18c block w/ b16 head is higher comp = more hp..

maybe? lol who the hell knows. i guess it all depends on so many factors like motor condition and tuning

Re:which head? b16 or b18??
 

:P

Re:which head? b16 or b18??
 

i say get the b18c block because the LS block isn't made to be revved high, the b18c is...u could make the ls rev high but it would cost more money and just more work.



spencer

Re:which head? b16 or b18??
 

b20, even more tq ;) get ligher internals and it'll rev good ;)

Re:which head? b16 or b18??
 

B16A and the C5(ITR) head are the same, flows the same too, The only differences are the valve springs/retainers/CAMS

ITR manifold is better than the B16A.

....
if you get the C1(GSR) head, u will need the Intake manifold too, the B16 IM will not bolt up.
....
Putting the GSR head on the B16A block will give more CR and Power, but not enuff to beat a GSR motor
....
putting the B16A head on the GSR block, will not be as fast as a regular GSR, but faster than a B16A
....
having a C1 head and getting a block for cheap, is worth it.
GSR's are not that cheap,
....


later

Re:which head? b16 or b18??
 

you will also need a gsr ecu for those damn buttyfly valves tho. unless u can block them off somehow

Re:which head? b16 or b18??
 

A stock PR3 head is not the same as a B18c5 type R head, yes they are the same casting, but honda engineers did alot of work to that head other than valve train componets, Their is minor porting in the head that is done at the factory.

I personally like The B18c head, why? closed combustion chamber increases C/R. Bigger intake ports, and when your going FI, The B16a head FLOWS better on a NA scale compared to a GSR. Now that most of us here are FI, that gets thrown out the window.

But if your like me.. I go with whatever you have, or whatever you can get for cheap ;)

Jeff

Re:which head? b16 or b18??
 

congrats you guys you just made my mind go :o TOO early. I never seen anything with the butterfly valves there are poor cheap fo0ckers in ohio lol anyone have some pics i can relate to all this info?

Re:which head? b16 or b18??
 

have you ever noticed that a b18c intake mani looks like it's upside down? the butterflies are in the mani and open up past a certain rpm allowing the air to travel through a shorter set of runners