trying to figure out what spec 3 or 4 would be better to go with.
I have a B18c, 11.3 cr, itr valve springs, jdm itr ecu 9k redline.

I know the spec spec III would do alright with this setup.

But I was not sure about the spec IV. I am sure I would need Ti valve retainers and probley valve springs. I have not been able to find much info on the spec iv. Do they idle ok? Do they need more fuel? any info would be great.

also, I've seen the BC Spec III seem to reach peak HP at about 8k rpm. What do the Spec IV reach peak HP at?


Modified by M36 at 10:42 PM 9/17/2007

 

run the bc3

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oldskool teggy &raquo;</TD></TR><TR><TD CLASS="quote">run the bc3</TD></TR></TABLE>

go with the bc3's the 4's would be better if u had a higher comp ratio but the 3's are good for 11.0:1

 

the bc4's work good on 11's he's valve spring cant take them thou...

 

thanks guys. I'm going go with buddy club spec III.

 

I'm actually in the market for some BC3+ cams as well. Can these cams make power past 8K? Would ITR valves springs/ret suffice? And its going on a B16A2 head.

 

bump

 

i belieave they make most there power to 8k after that they start to fall off the 4's make power to 9k but require a lil more mods

 

buddy club spec 3's have a good mid range and usually stop making power around 8500 in my experience with them...i noticed a huge difference driving around town even untuned

 

Sorry to hi-jack but I'm running a B20 VTEC with 10.8 compression and all the usual bolt-on's and head work with a set of BC IV cams planning to rev to 8500 rpm. Will these be OK or do I have to change cams?

 

honestly spec 4's might be too big for your mild set up......i would go with spec 3 for a reliable street car which would see some good gains but thats just my opinion

 

Any other cams you will suggest with that compression???

 

BC3 vs BC4 on B18C




BC3 vs BC4 on B20



I had the BC3:s in my B16.Loved em.
Now that i am getting a B18C5 i whent with the 4:s.

 

What compression are you running?

 

i have the BC III+ they worked good for me. if you guys are looking for a set of III+ or V specs hit up: myfirstdc2 he has some custom cams ground and guaranteed by Skunk2 themselves and they are ALOT cheaper than buying the actual Buddy Club cams. Same exact specs and everything. just thought id throw it up here to save some of you some cash if getting cams. $375 picked up and 1yr (i think) guarantee by Skunk2.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2000EK4 &raquo;</TD></TR><TR><TD CLASS="quote">BC3 vs BC4 on B18C


.</TD></TR></TABLE>
More details on this motor please, it looks like the 4s are just flat making more power all around here.

 

vtec killer cams.

 

This is my old dyno sheet from about three years ago. That is on BC3+, JDM B18C, JDM ITR header, Password JDM Whale's *****, Hondata S100 tuned by Elton @ Raceline, Carsound 2.5" Highflow cat, with 2.5" mandrel piping exhaust.

 

TO RUN THE BC SPEC4 DO YOU NEED TO RUN THERE VALVE TRAIN ALSO

 

I think in either case you are going to be spending more money than just new cams. Larger injectors and a programable ECU are going to be a must. If you go with the BC4 more money on springs and retainers.
Go with the BC3+, programable ECU, injectors and get it tuned.

 

Way to bump an OLLLLLD thread...

...and no, you don't have to use THEIR valve train...just don't use stock either.

 

ya, you could atleast bump it with useful information. ecu, injectors would be a waste of time and money. spec3s are buddy club entry level cams. no valve springs needed. no tunning needed. just put them in there. (kinda like getting type r cams)

 

atleast i know a tune isnt a waste of time or money

 

shows what you know.

 

lol