so my buddy got a new lsvtec from someone and it has bc4 and i was curious how they compare to my pro1's im about to get...
thx

 

they suck, he should sell them to me and get the pro 1's


Modified by all-mtr-teg at 2:25 PM 10/9/2007

 

it depends on the rest of the engine but the pro 1's should make a good bit more power than the bc 4's and more torque also

 

pro1's.

 

if your head is pnp, i would gor pro 2 FTW!

 

any reason why the pro1's will make better power??

 

solid line is pro1, dottled one bc4

https://honda-tech.com/zerothread?id=1135465

 

so basically they have almost same results with just slight power differences at different spots at the rpm range...

 

Modified by IT GUY at 6:48 PM 10/11/2007

 

you have to take into consideration the rest of the engine build thats tbones old 2.0 build with a ported head high compression and really good header and intake manifold combo.

so these cams are going to react differently to a smaller displacement engine without a ported head and so on and so forth. it also depends if the cams are degreed in properly.

 

I;ve been waiting for a comparsion between these 2 cams. I'd like to see more dyno comparisions, but on a 1.8 not 2.0. Anyone?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IT GUY &raquo;</TD></TR><TR><TD CLASS="quote">Well, I was wondering about the specs of those two cams compared to eachother. Especially after seeing a dyno graph of both layed on top of each other. If these are wrong, please let me know. It looks to me like the skunk2 has a little more lift and a little less duration than the BC. Guess they are close enough to put down about the same numbers for EITCP's setup

skunk2 pro1:

intake
lift: .496 duration:264
exhaust
lift: .469 duration:264


BC4:

intake:
lift: .484 duration: 306
exhaust:
lift: .465 duration: 302</TD></TR></TABLE> Are those duration numbers both @ .040 or advertised duration's ? Inquireing mind's want to know.

 

looks like the pro1's are at 0.050" while the Bc's are seat to seat.

 

anyone know what i should start to degree my cams s2pro1 at?? i have not recieved them in the mail and dont know if it says or not lol...
and can someone explain the duration differences between the bc4's and the s2pro1 and why they produce similar results???

 

Your pro 1's should come with a cam card giving you all your specs, lobe center line, duration, valve events, etc...

There are some good threads on here about degreeing cams if you have questions, or just call Skunk2.

 

Modified by IT GUY at 6:48 PM 10/11/2007

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote"> Are those duration numbers both @ .040 or advertised duration's ? Inquireing mind's want to know.</TD></TR></TABLE>


You know the answer to that, probably not. Thats why you really can't compare the "Advertised Specs" of 2 cams.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kpowerdhatch &raquo;</TD></TR><TR><TD CLASS="quote">You know the answer to that, probably not. </TD></TR></TABLE>

Holy **** do you have ALLOT to learn. DonF was degreeing camshafts before you were suckin your mama's **** kid...

 

so the bc5's are comparable to the pro2's then?

 

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

Holy **** do you have ALLOT to learn. DonF was degreeing camshafts before you were suckin your mama's **** kid...



</TD></TR></TABLE>


Easy there cowboy, you misunderstood what I said. I have a lot of respect for Don and what he does.