Does anyone know what the differences between the b16b block and the b18c5 block are? Can a b18c5 crank be used in a b16b to yeild similar numbers in displacement?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SilverEk3dr &raquo;</TD></TR><TR><TD CLASS="quote">? Can a b18c5 crank be used in a b16b to yeild similar numbers in displacement?</TD></TR></TABLE>

yes

 

i have a set of b18c5 crank rods and pistons if your interested.

but to answer your questions, yes the block is the same,P72. if you use a complete itr crank rods and piston you would have the same specs as itr. but if you re-use your ctr pistons then your comp. will be higher.

 

I always thought there was a small differene in block/deck height between the B16 and B18?

 

I think you mean b16a. The b16B (CTR motor) has a taller block than b16a. I just wasnt sure if the internals were similar/switchable.

Thanks guys

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zygspeed &raquo;</TD></TR><TR><TD CLASS="quote">I always thought there was a small differene in block/deck height between the B16 and B18?</TD></TR></TABLE>
b61a is shorer block, if i'm not mistaken the casting is pr3
b18c and b16b are the same block casting p72.

 

blocks are exactly the same. any b18 rotating assemble can be used in a b16b to yield a 1.8 displacement.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by esponet &raquo;</TD></TR><TR><TD CLASS="quote">
b61a is shorer block, if i'm not mistaken the casting is pr3
b18c and b16b are the same block casting p72. </TD></TR></TABLE>


Wow! You learn something new every day.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zygspeed &raquo;</TD></TR><TR><TD CLASS="quote">I always thought there was a small differene in block/deck height between the B16 and B18?</TD></TR></TABLE>


b16a 7mm shorter than b16b, b18c1, b18c5, b18b, b20 (crv's not preludes) i am not sure about the b18a's though

 

Yep, I believe the b16a is something like 7mm shorter deck height compared the the B16b. I didn't measure but I have some pics around here somewhere when I swapped blocks. I'll see if I can find it.
Edit: heres the pic i was referring to.





Modified by ill phil at 7:40 PM 12/7/2003

 

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


Wow! You learn something new every day..... </TD></TR></TABLE>

 

b16b , its the CTR motor right and how much hp does it have it at the crank

 

CTR B16b- 185 hp...

The B18a/b blocks are taller than the P72 blocks correct? The must be... same 81mm bore, but more displacement... Arent they something like 1872cc or something? i know they are more than 1.8 liter.... and the p72 is just under 1.8 liter.. 1997cc or close to that... somebody verify and you get a !

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Derek14 &raquo;</TD></TR><TR><TD CLASS="quote">CTR B16b- 185 hp...

The B18a/b blocks are taller than the P72 blocks correct? The must be... same 81mm bore, but more displacement... Arent they something like 1872cc or something? i know they are more than 1.8 liter.... and the p72 is just under 1.8 liter.. 1997cc or close to that... somebody verify and you get a !</TD></TR></TABLE>


i do not believe so...i think that difference is made up by the stroke...since b18'a-b's have different crank than gsr and c5

 

B18a and B18b are both 1834cc's if im not mistaken.

Good info in this thread. Nothing like that LS 89mm crank, in a torque aspect

 

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


i do not believe so...i think that difference is made up by the stroke...since b18'a-b's have different crank than gsr and c5</TD></TR></TABLE>

Correct, different crank and rods to achieve the higher displacement.

 

Nothing like that LS 89mm crank, in a torque aspect


what about the SI Bus's 99mm stroke??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18CXr &raquo;</TD></TR><TR><TD CLASS="quote"> Nothing like that LS 89mm crank, in a torque aspect


what about the SI Bus's 99mm stroke?? </TD></TR></TABLE>

Just doesnt make since dog! Killin the RS...needs to be 2.3

 

Quick question about Rod/Stroke Ratios. I don't really understand exactly what it is, I heard that boring out a B16B to 85mm would yield the perfect rod/stroke ratio for a motor. I'm guessing its just a ratios of the bore/stroke? OR maybe vice-versa? Can anyone explain really quick about R/S ratios for me? Thanks dudes!

And also: Swapping in an ITR Crank and Rods into a b16b would basically create an ITR motor with CTR pistons, correct?

 

And also: Swapping in an ITR Crank and Rods into a b16b would basically create an ITR motor with CTR pistons, correct?

yes that is correct.

 

would a B16b with ITR rods & crank produce more power than an ITR
what if you switched out the pistons too. Is there a difference between CTR cams & ITR. In this situation with an ITR stroked B16b, keep the CTR cams or go ITR?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jon V &raquo;</TD></TR><TR><TD CLASS="quote">would a B16b with ITR rods & crank produce more power than an ITR
what if you switched out the pistons too. Is there a difference between CTR cams & ITR. In this situation with an ITR stroked B16b, keep the CTR cams or go ITR?</TD></TR></TABLE>


b16B

with ITR rods and pistons and crank make the b16b a b18c1 in a b16B block!

now b16B block with ITR RODS AND CRANK with b16B pistons add .8 compression!!!! depending on if it is jdm or us spec piston you are replacing....


best NA honda setup IMHO is B16B or B18c1 or c5 block with itr crank and rods with ctr pistons.....this setup is good for 210 hp to the wheels with CAMS and tuning!!!!!

 

Block Height

B16A---263mm
B16B---270mm
B18C---270mm

 

basically the rod stroke ratio will determine how many/little rpms and how much/little tq ur motor will put out. the best honda rod stroke ratio is a b16,b17 cus they have abilaty to rev like a bastard cus of the short rods. The worst rod stroke ratios are found in the b18a,b18b,b20b,b20z because thier rods are the longest and cannot handle the high revs that good.personally i like the b18c motors. their rod stroke ratio is inbetween the b16,17 and the ls,crv strokes. the b18c blocks make power best at about 8500-9500max.unless youre erick aguilar who does 11500. but thats just my opinion so dont quote me on this and say i said this and that.

 

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

best NA honda setup IMHO is B16B or B18c1 or c5 block with itr crank and rods with ctr pistons.....this setup is good for 210 hp to the wheels with CAMS and tuning!!!!!</TD></TR></TABLE>

what type cams would these be?