I've been searching for more than 6 hours now about what head is the best to use for a b20/vtec.

So far I read that the gsr head gives more compression and the b16 head flows better but thats the ONLY info I found at this time. Anybody knows more about this?

Thx

 

b16 is best flowing and cheaper of the 2

 

Yes but best flowing doesn't mean its the best. This is a head made to run on a 1.6L engine and we are using a 2.0L here. So with a b16 head we are basicely ''choking'' the engine...

 

then click the damn search button in the top right and type in crvtec, there are plenty of threads to look thru

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Newschooler &raquo;</TD></TR><TR><TD CLASS="quote">Yes but best flowing doesn't mean its the best. This is a head made to run on a 1.6L engine and we are using a 2.0L here. So with a b16 head we are basicely ''choking'' the engine...</TD></TR></TABLE>

please explain how it "chokes" the engine?

 

Because the smaller port on the b16 allows for better flow velocity, but when you swap that head on a 0.4L more engine, the head will flow, but this engine needs the BREATH. It needs a little bigger ports and will keep the same flow velocity as the b16 head on a 1.8L

LSVTECJay, thank you for your advice, I already did. Did you searched about that subject yourself before saying to use the goddamn search button? I don't want to hear about how to build a crvtec. I'm talking about head flowing here.

 

The two heads have very similar port volume and flow numbers.The b16 head would be my choice.The chamber is a little bigger,the manifolds are easier to deal with (no secondaries,smaller overall size).They are a little cheaper by maybe a hundred bucks or so.The gsr cams work well with the b20 and b16 head.You can buy these used for $50-$100.
Glenn

 

b16 head it has been proven over and over

 

i personally like the p72 head better; more quench and port angles are a little better than the pr3.
pr3 ex. ports flow a 'little'' better

 

Well bigger chamber = lower compression in my book. Its not something you want if you stay NA...

And secondaries aren't a good thing? I though they would be a good thing, helping flaten the power curve a bit...

 

If we knew what your trying to achieve we could give you more specific help.Track car,street car or a little of both.Are you going to use stock pistons?Aftermarket intake?Both heads are good pieces,one may be a little better depending on what your trying to accomplish.
Glenn

 

dont people just take the head to a machine shop and get the head size matched to the block size for cheap?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">i personally like the p72 head better; more quench and port angles are a little better than the pr3.
pr3 ex. ports flow a 'little'' better </TD></TR></TABLE>

me 2, people always say that b16 heads are better, but why are gsr heads harder to find?