Hey guys,
I was reading around a quite a few folks out there build their own engines from scratch. Why is the B16 head on the B18 block a popular match up? I assume it raises compression. What advantages does it give you over the regualr GSR/ITR B18 engines?

Are there any other strong matches and if you could list what makes them a good match aswell, it would be appereciated.

 

B18b/b16 head Ls/vtec.....
B18c/b16 head Poor mans ITR...
B20/b16 head Crvtec...

The b16 head flows well...thats why poeple use it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by issues4 &raquo;</TD></TR><TR><TD CLASS="quote">Hey guys,
I was reading around a quite a few folks out there build their own engines from scratch. Why is the B16 head on the B18 block a popular match up? I assume it raises compression. What advantages does it give you over the regualr GSR/ITR B18 engines?

Are there any other strong matches and if you could list what makes them a good match aswell, it would be appereciated.</TD></TR></TABLE> im not too sure but i think its because the b16 head is almost like the itr. If u give it a good P&P it would be close having a to the Type R head and with a 1.8 block it would almost be like having a type R hence the name "poor mans Type R"

 

Which car is the B18b from? the ls integra? I've heard people talking about dropping an LS motor in, is that what they are generally refering to? ls block/ b16 head?

Also, where is the B20 from?

Hey Drchulo, can you explain a little further in depth what a P&P is? I'm thinkin Port and Polish, but exactly what is that process?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by issues4 &raquo;</TD></TR><TR><TD CLASS="quote">Which car is the B18b from? the ls integra? I've heard people talking about dropping an LS motor in, is that what they are generally refering to? ls block/ b16 head?

Also, where is the B20 from?

Hey Drchulo, can you explain a little further in depth what a P&P is? I'm thinkin Port and Polish, but exactly what is that process?</TD></TR></TABLE>

B20 is from a honda CRV...
b18b is from an Ls,Rs,Gs
B18c is GSR

 

https://honda-tech.com/zerothread?id=623500 read blue shadows respond i think its pretty on point if its not correct some one please correct it.

 

Thanks...dope, that was posted 6 days ago...wonder why i could'nt find it in my search...hmmm...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Port and Polish:

Port = Basically this is work done to the ports or openings of a motor whether it be the intake ports or exhaust ports. The type of work can range from opening up or slightly enlarging a particular port. When you port your openings you usually want to match up the port to whatever is mating to it. IE. your exhaust ports will need to be port-matched to your exhaust manifold. That just means that the holes on the block match up precisely to the holes on your header.

Polish = This usually involves smoothing out the surface to allow for better air or exhaust flow. IE, polishing the inside of your exhaust manifold allows the gas to exit the manifold faster since there is less drag from the gas flowing over the now smooth surface...or something like that.
</TD></TR></TABLE>

 

A lot of people say that it flows better and with a port and polish job, you can get some good power. As far as compression goes, the b16 head with give you less compression than the B18c.

 

one important advantage alot of people on theis board stress is cost. you can get b16s heap cheap. not so for the gsr motor or itr.
wheather the b16 head flow better than the gsr head is open to debate.

 

because people assume that just because the b16 head flows better then the gsr..that it makes more power...there is a key word in there and its "assume"

 

Yeah good points. Just so i don't get the wrong info (and pass it on to someone else).

You said the compression is lower with the b16 head. So the b16 head is deeper/taller (however you want to look at it) than the stock b18 series heads.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eyewitness &raquo;</TD></TR><TR><TD CLASS="quote">
B20 is from a honda CRV...
b18b is from an Ls,Rs,Gs
B18c is GSR</TD></TR></TABLE>

If i'm not mistaken, there is also a b18a? where is it from?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drchulo &raquo;</TD></TR><TR><TD CLASS="quote"> im not too sure but i think its because the b16 head is almost like the itr. If u give it a good P&P it would be close having a to the Type R head and with a 1.8 block it would almost be like having a type R hence the name "poor mans Type R"</TD></TR></TABLE>

if it gets a good port and polish, then wouldent it be better than an ITR head?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chris@allmotor.net &raquo;</TD></TR><TR><TD CLASS="quote">

if it gets a good port and polish, then wouldent it be better than an ITR head?</TD></TR></TABLE>

I think that would really depend on the level of p&p,....i think a b18a is the same as a b18b....correct me if im wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eyewitness &raquo;</TD></TR><TR><TD CLASS="quote">

I think that would really depend on the level of p&p,....i think a b18a is the same as a b18b....correct me if im wrong. </TD></TR></TABLE>

b18b has a more aggresive cam and IM i think?

 

B18a is the 90-93 1.8 liter non-vtec, the b18b is the 94+ non-vtec 1.8 liter. same bottom end, I believe the intake is slightly different, and the cams are a little better, and the ECU program is also a little better.

The ITR head is a factory ported B16a head. All ITR heads use B16a head castings.

Must be some reason Honda swapped the heads to go from a GSR to an ITR...hmm...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by haggar &raquo;</TD></TR><TR><TD CLASS="quote">B18a is the 90-93 1.8 liter non-vtec, the b18b is the 94+ non-vtec 1.8 liter. same bottom end, I believe the intake is slightly different, and the cams are a little better, and the ECU program is also a little better.

The ITR head is a factory ported B16a head. All ITR heads use B16a head castings.

Must be some reason Honda swapped the heads to go from a GSR to an ITR...hmm...</TD></TR></TABLE>

dont speculate

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ThisLittleSleepeR &raquo;</TD></TR><TR><TD CLASS="quote">

b18b has a more aggresive cam and IM i think?</TD></TR></TABLE>

I wasnt talking abou the cams or manifold....just the head

 

So to sume up....

B20 - CRV
B18A - 1.8L 90-93 Ls, Rs, Gs, Non-Vtec
B18B - 1.8L 94+ Ls, Rs, Gs, Non-Vtec --&gt; better ECU, cams, Intake, same block
B18C1 - GSR
B18C5 - Type-R --&gt; ITR head = ported B16A Head

B18C Block with B16a Head - "Poor mans Type-R"
Reason for B16a - Cheaper, debatably flows better with/without a "Port and Polish" Job (P&P), lowers compression

B18B Blcok with B16A head - Ls/vtec
Reason for B16a - Cheaper, Reason for B16a - Cheaper, debatably flows better with/without a "Port and Polish" Job (P&P), Lowers compression

Feel free to add more info the list, or correct anything.

 

you also gots ur crv setup, b20 block, v-tec head, know as a torque monster.

 

Don't forget about the B17A (he needs the lovin). That showed up in the 92 and 93 Integra GsR. Its a B16 with a different crank, rods, and pistons.
They chose the B16 head because it has larger, shorter ports, and were designing the type r for road racing (or high end power).
I would take a GsR head over a B16 head anyday for drag racing. The GsR head has way more potential for mid range.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by haggar &raquo;</TD></TR><TR><TD CLASS="quote">B18a is the 90-93 1.8 liter non-vtec, the b18b is the 94+ non-vtec 1.8 liter. same bottom end, I believe the intake is slightly different, and the cams are a little better, and the ECU program is also a little better.</TD></TR></TABLE>

The B18a blocks have a compltely diffrent PCV vent system also. it mimics the vtec motors. while the b18b blocks dont have the "vtec style" PCV system, the valve just sits directly on top of the valve cover.

thats a little reason that some people decide to use the b18a blocks for ls vtec combos, just FYI

-sander

 

https://honda-tech.com/zerothread?id=594668
That guy had a B20Z block with our famous B16a head. We should ask him why he used the B16a head

I'v never heard of a B20Z....anyone got any ideas?

 

The b20Z has higher compression and around 15 to 20 more HP.

 

Higher compression than what exactly...sorry

Which car does the B20z come from? Preludes are H22 and H20 yes?

 

Higher Comp than tha B20b. The b20b and B20Z are both from the CRVs. Lots of CRVs that are outside the US are B20Z but a lot of the ones in the US are b20b.