I've been trying to see if I can get a definitive answer on how long the B16B rods really are. I searched and it seems that whenever this was asked the answer is always "longer" or something to that effect.
If someone could please help me out, I would appreciate it mucho grande.

 

Im gonna guess 141.65mm

 

Bump for the night crew.......................

 

i too have searched....and i got my roommate to do some math.... we came up with: 144mm.... why you want to know the rod legnth?

 

Stock Compression:
B16A 10.2:1 (1ST GEN)
B16A 10.4:1 (2ND GEN-UP)
B17A1 9.7:1
B18C1 10.0:1 (USDM)
B18C1 10.6:1
B18C5 10.6:1 (USDM)
B18C5 11.1:1 (JDM)
B16B 10.8:1
B18A1 9.2:1
B18B1 9.2:1
B18B 9.4:1 (JDM)
B20B 8.8:1 (USDM/JDM)
B20Z 9.6:1 (USDM/JDM)
D16A1 9.5:1
D16Z6 9.1:1
D16Y8 9.6:1
ZC 9.5:1

Engine Piston Mixing Compression output:
B16A W/ B16B(PCT) PISTONS YEILD 11.1:1
B16A W/ B18C5 (P73-A0) PISTONS YEILD 10.4:1
B16A W/ B18C5 (P73-00) PISTONS YEILD 10.7:1
SAME ORDER FOR THE REST
B17A1 11.4
B17A1 10.6
B17A1 10.8

B18C1 11.8:1
B18C1 10.9:1
B18C1 11.4:1

Piston/Rod Measurements:

B16A PR3:
ROD LENGTH: 5.290”
STROKE: 3.031”
BORE SIZE: 3.189 “(81MM)
COMPRESSION HEIGHTS: 1.180”
DOME HEIGHT: .098”
WEIGHT: 299 GRAMS

B17A1 P61:
ROD LENGTH: 5.208”
STROKE: 3.205”
BORE SIZE: 3.189” (81MM)
COMPRESSION HEIGHTS: 1.181"
DOME HEIGHT: CAN’T FIND YET
WEIGHT: CAN’T FIND YET


B18A1 PR4:
ROD LENGTH: 5.394”
STROKE: 3.504”
BORE SIZE: 3.189“ (81MM)
COMPRESSION HEIGHTS: 1.180”
DOME HEIGHT: -.055”
WEIGHT: 280 GRAMS


B18C1 P72
ROD LENGTH: 5.429”
STROKE: 3.433”
BORE SIZE: 3.189” (81MM)
COMPRESSION HEIGHTS: 1.183”
DOME HEIGHT: .000”
WEIGHT: 305 GRAMS

B18C5 P73-A0
ROD LENGTH: 5.429”
STROKE: 3.433”
BORE SIZE: 3.189” (81MM)
COMPRESSION HEIGHTS: 1.190”
DOME HEIGHT: .070”
WEIGHT: 310 GRAMS

B20B
ROD LENGTH: NA
STROKE: NA
BORE SIZE: 3.307” (84MM)
COMPRESSION HEIGHTS: 1.165”
DOME HEIGHT: -.035”
WEIGHT: 312 GRAMS

H22A
ROD LENGTH: 5.63”
STROKE: 3.571”
BORE SIZE: 3.425” (87MM)
COMPRESSION HEIGHTS:1.222"
DOME HEIGHT: NA
WEIGHT: NA

H23A1
ROD LENGTH: 5.571"
STROKE: 3.740"
BORE SIZE: 3.425" (87MM)
COMPRESSION HEIGHTS: 1.203"
DOME HEIGHT:NA
WEIGHT: NA

D15B1/ 2/ 7/ 8
ROD LENGTH: 5.275”
STROKE: 3.326”
BORE SIZE: 2.933” (74.5MM)
COMPRESSION HEIGHTS: 1.208”
DOME HEIGHT: .000”
WEIGHT:

D16Z6
ROD LENGTH: 5.393”
STROKE: 3.543”
BORE SIZE: 2.952” (75MM)
COMPRESSION HEIGHTS: 1.181”
DOME HEIGHT: -.118”
WEIGHT:NA

D15Z1
ROD LENGTH: 5.393”
STROKE: 3.326
BORE SIZE: 2.952” (75MM)
COMPRESSION HEIGHTS: 1.092”
DOME HEIGHT: -.277”
WEIGHT:NA

D16Y7
ROD LENGTH: 5.393”
STROKE: 3.543”
BORE SIZE: 2.952” (75MM)
COMPRESSION HEIGHTS: 1.181”
DOME HEIGHT: -.130”
WEIGHT:NA

D16Y5
ROD LENGTH: 5.393”
STROKE: 3.543”
BORE SIZE: 2.952” (75MM)
COMPRESSION HEIGHTS: 1.161”
DOME HEIGHT: -.106”
WEIGHT:NA

D16Y8
ROD LENGTH: 5.393”
STROKE: 3.543”
BORE SIZE: 2.952” (75MM)
COMPRESSION HEIGHTS: 1.161”
DOME HEIGHT: -.083”
WEIGHT:NA

D17A1
ROD LENGTH: 5.511”
STROKE: NA
BORE SIZE: 2.952” (75MM)
COMPRESSION HEIGHTS: 1.062”
DOME HEIGHT: -.106”
WEIGHT:NA

D17A2
ROD LENGTH: 5.511”
STROKE: NA
BORE SIZE: 2.952” (75MM)
COMPRESSION HEIGHTS: 1.062”
DOME HEIGHT: -.104”
WEIGHT:NA


ROD TECH:

ROD/STROKE RATIO AND ROD LENGTH:

B16A: 1.74/ 134MM
B17A1: 1.62/131.87MM
B18A1: 1.54/ 137MM
B18B: 1.54/137MM
B18C1: 1.58/137.9MM
B18C5: 1.58/137.9MM
B20A3/5 3RD GEN LUDE) 1.50/142.75MM
B21A1: 1.492/141.7MM
B20B: 1.539/137MM
H22A: 1.577/143MM
H23A1: 1.49/141.5MM
F20C: 1.821/153MM
D17A1: /140MM
D17A2: /140MM
D16Y8: 1.52/137MM
D16Y7: 1.52/137MM
D16Z6: 1.52/137MM
D16A1: 1.52/137MM
D16A6: 1.52/137MM
D15B1: 1.59/134MM
D15B2: 1.59/134MM
D15B7: 1.59/134MM
D15B8: 1.59/134MM
ZC: 1.52/137MM

b16b is same as b16a

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZC1.8crx &raquo;</TD></TR><TR><TD CLASS="quote">
b16b is same as b16a </TD></TR></TABLE>

Wrong.

The b16b has the same stroke length of the b16a but with a 7mm taller block. Add 7mm to the b16a rods and you have the b16b rod length. I just wanted you guys to do a little thinking for yourselves.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtec92Hatch &raquo;</TD></TR><TR><TD CLASS="quote">

Wrong.

The b16b has the same stroke length of the b16a but with a 7mm taller block. Add 7mm to the b16a rods and you have the b16b rod length. I just wanted you guys to do a little thinking for yourselves.</TD></TR></TABLE>

Are the wrist pins located at the exact same height for both the B16a/b pistons? If not, that would mean that some of the rod length would be made up by piston height (just asking since I don't know myself).

 

Yes, the piston pin is in the same place, the rod length is the difference along with deck height.

 

Actually it is not, the compression height is taller, the reason the deck height is different when using that piston in other B engines. I have not measured one but the rod length seem to be approx. 143mm.

 

[french] Yez, zey do pop out of ze hole a littal bit on ze b16a'z with CTR pistones[/french]

I was just trying to simplify it.

How much would you say the compression height differs from a set of ITR's?