suckawillis

thanks!

Greenery18

I think this thread should be made a sticky

Whatabout us non-vtec guys? Says b-series cam list, but looks like a vtec cam list to me..

in-progress

need this thanx

dcobeo7931

+1 does anybody have the specs for the b18b1 cams?

JPerkMr954

So... I'm assuming the higher the lift and the duration the better? I'm new to this technical aspect of cams.. so I'm trying to understand...

lovemycoupeb18c

ok i call bullshit on the posting 2k civic si put up on the du*ation on both intake and exhaust side on those gs-* cams. how does stock cams have bette* du*ation then the whole cam list posted? those numbe*s have to be w*ong.

can you guess what key b*oke on my keyboa*d? lol

DraginX

Do you realize the original post was from way back in 03... could be the reason there are some mistakes.

Glorymanunited

Wow...good info here...really2 need it righ now...lol.

recycledracing

Hey all, ive been a long time lurker and benefiter of the information on this site. Recently I've been having huge issues with the BC0013, so set about buying some new cams, but wanted to be able to make some sort of comparison (i know the below numbers cant visualize ramp rate and such) but as an indicator and to keep this great sticky current please see below some modern day cams at 1mm. If an admin wants to move these specs to the front page my all means please do.

The Below are all measured at 1mm and are straight from the manufacturers mouth.

Skunk2 Tuner Series Stage 1
Int-251 dur. / 11.5mm lift
Exh-235 dur. / 10.5mm lift

Skunk2 Tuner Series Stage 2
Int-264 dur. / 12.2mm lift
Exh-266 dur. / 11.8mm lift


Skunk2 Pro Series 1+
Int-258 dur. / 12.6mm lift
Exh-260 dur. / 11.9mm lift


Skunk 2 Pro Series 2+
Int-261 dur. / 12.6mm lift
Exh-272 dur. / 11.6mm lift


Brian Crower Stage 3 (BC0013)
Int-268 dur. / 12.6mm lift
Exh-260 dur. / 12.6mm lift

2LEM1

iTrader: (1)

I've noticed a lot of these "official cam spec" threads are wrong.

Here's some specs I've collected over the years that I feel are correct that are measured off the actual intake and exhaust valve movements at 1mm, not "advertised specs".


B16 -
Intake lift - 10.34
Intake duration - 235
Exhaust lift - 9.44
Exhaust duration - 230


ITR (96-97) -
Intake lift - 11.45
Intake duration - 240
Exhaust lift - 10.52
Exhaust duration - 235


CTR/ITR (98+) -
Intake lift - 11.4
Intake duration - 243
Exhaust lift - 10.52
Exhaust duration - 235


Buddy Club Spec 3 -
Intake lift - 11.6
Intake duration - 304
Exhaust lift - 10.7
Exhaust duration - 294


Buddy Club Spec III+ -
Intake lift - 11.4
Intake duration - 250
Exhaust lift - 11.8
Exhaust duration - 245


Buddy Club Spec IV -
Intake lift - 12.3
Intake duration - 266
Exhaust lift - 11.8
Exhaust duration - 262


Buddy Club Spec VI -
Intake lift - 11.8
Intake duration - 253
Exhaust lift - 11.9
Exhaust duration - 243


JUN III -
Intake lift - 12.0
Intake duration - 265
Exhaust lift - 11.5
Exhaust duration - 265


Spoon Sports High Cam -
Intake lift - 11.5
Intake duration - 256
Exhaust lift - 11.1
Exhaust duration - 245


Skunk2 Tuner1 -
Intake lift - 11.6
Intake duration - 252
Exhaust lift - 10.9
Exhaust duration - 249


Skunk2 Tuner2 -
Intake lift - 12.3
Intake duration - 266
Exhaust lift - 11.8
Exhaust duration - 262


Skunk2 Tuner3 -
Intake lift - 12.8
Intake duration - 273
Exhaust lift - 11.5
Exhaust duration - 273


Skunk2 Pro1 -
Intake lift - 12.6
Intake duration - 257
Exhaust lift - 11.6
Exhaust duration - 263


Skunk2 Pro2 -
Intake lift - 12.5
Intake duration - 263
Exhaust lift - 11.6
Exhaust duration - 273


Skunk Pro3 -
Intake lift - 12.7
Intake duration - 270
Exhaust lift - 11.9
Exhaust duration - 273


RM24x -
Intake lift - 12.0
Intake duration - 268
Exhaust lift - 12.0
Exhaust duration - 268


RM25x -
Intake lift - 12.0
Intake duration - 275
Exhaust lift - 12.0
Exhaust duration - 275


Toda Spec A
Intake lift - 11.6
Intake duration - 250
Exhaust lift - 11.2
Exhaust duration - 240


Toda Spec B
Intake lift - 12
Intake duration - 255
Exhaust lift - 12
Exhaust duration - 245


Toda Spec C
Intake lift - 12.5
Intake duration - 255
Exhaust lift - 12.5
Exhaust duration - 255


BISI Level 3+ CAMS -
Intake Lift - 12.2
Intake Duration - 276
Exhaust Lift - 11.7
Exhaust Duration - 276

ssmrico

is that skunk stages for tuners or pros?

2LEM1

iTrader: (1)

I just listed all the skunk cam specs for both tuner and pro.

4Driver

The new version of Skunk2´s has changed the specs

For example:

Skunk2 Tuner Stage 1 11.50@251° / 10.80@252°
Skunk2 Tuner Stage 2 12.27@264° / 11.81@266°
Skunk2 Tuner Stage 3 12.55@266° / 11.81@277°

Skunk2 Pro-Series 1+ 12.65@258° / 11.90@260°
Skunk2 Pro-Series 2+ 12.60@260° / 11.65@272°

check the website...

2LEM1

iTrader: (1)

I guess you guys don't understand the difference between "advertised specs" and actual duration based on opening and closing events of the valves.

I don't even know why I ******* waste my time here anymore.

Dylan Taylor

So i have a b20 high comp block that in going to be putting my b16 head on that has itr cams should i upgrade my springs and retainers to gsr. I see people saying gsr and itr are identical in this aspect but what about the springs from the b16 head?

2LEM1

iTrader: (1)

GSR and ITR springs are most definitely NOT identical.

What your dumb friends are talking about, is that GSRs have a dual valve spring on the intake side. (ITRs have dual valve springs on both sides) Even so, they are not the same spring.

Just find some ITR springs, they're cheap.

ngv1515

ngv1515

K7-1Ktrevor

JRCivic1

I know this is a bit old, but for clarification purposes and to help anyone who looks at this thread in the future: ITR EXHAUST inner and outer valve springs are the SAME part number as the GSR INTAKE inner and outer valve springs. ITR Intake inner and outer valve springs are unique to the ITR head and the GSR Exhaust valve springs are a single outer spring... no inner spring.

Basically, if you have a GSR head and want to install Type R springs and cams, you move your GSR Intake inner and outer springs over to the exhaust side (discarding the exhaust single springs) and buy a set of ITR Intake inner and outer springs and install them on the Intake side. Drop in the cams, set your valve lash and drive.

2LEM1, you did an incredible amount of work to compile all of that information and I, as well as many others in this community, appreciate your effort and willingness to share it.

ngv1515

JRCivic1

The VTEC rocker ratio on a "B" series is 1.55:1. You have to multiply your measurement by the rocker ratio to get the lift at the valve. You are measuring at the lobe essentially... not what you will see advertised by most cam manufacturers.

As an example, look here: http://briancrower.com/makes/honda/b16ab18c.shtml

ngv1515

5.6 X 1.55 = 8.68
THIS LOOKS LOWER THAN STOCK. THEY TURBO CAMS THEN?

Rob Holland

Dude alot of those are way wrong. Today VTEC killer cams are 285.295, or 305. And the b series type r b18 has smaller Intake valves than the b16b type r. They're not the same.