Need some advice from you all again.

Basically, i have a B20V and is running with Toda A now. Haven't put it on dyno yet but i made 176 whp when it is a B16.

Now i'm looking for another camshafts but i just can't choose which one i should go for. Please give me some advice which camshaft is most suitable for me because I don't want to rev the B20V over 8.5K, and i think my cr is only around 10.5-11.0.

1. Toda B
- saw some thread saying it has the best mid-range power but others said Toda A has better power / torque under 6.5K. And after that A & B are very similar but Toda B has more peak end power

2. Jun 3
- i like it because i heard the idle is perfect, and it has same mid-range power / torque comparing with Toda B. But I also heard you require over 12.0 cr to use this cam.

3. BC4
- some ppl suggest me to use this without reason when i ask which camshaft is the best for B20

Which one will you pick? And for a regular built B20V, are the above camshafts too strong?

Thanks!

 

If your pistons can accept large lift cams, definately go with either Skunk2 Pro1 or Pro2 cams.

They have hands-down the best low and mid power of any cam I've tested.

 

Is difficult to get the Skunk2 product in Hong Kong, and is overpriced for those ppl selling here. So i throw this option away.

What will you choose among those 3 cams?

 

buddy club has the bigger primaries. makes a nice diff for the 2 liter.

 

I don't understand.

You can easily order the Skunk2 cams from a vendor in North America and have them shipped to Hong Kong. If shipping is similar to when I send stuff to Tokyo, it will take ~5-7 days and cost ~$40-50 for a set of cams.

You will be easily spending more on a set of JUN's or TODA cams than it would cost to buy Skunk2's and have them shipped.

 

I had a really bad experience to purcahse/sell on internet. The lesson costs me $1,280. So i really got no gut to do this again.

And the main reason for thinking of Toda B & Jun 3 is because my friend had both and want to sell them. For BC4, the reason i'm thinking is because someone told me it is perfect with B20V for reving under 8.5K

 

Well, our 244whp 170wtq B20V is running Jun 3's and they are awesome. Idle is as if it were stock and power is great through out. But, our CR is at about 12.9 and we make power to 9k. Rev limit is set at 8700 though. I think you might have to low of a CR to use the Jun's.

 

And an argument for the BuddyClub 4's...
I made 224whp @ 8500rpm on a near stock head with these.

 

rocket cams.

 

I know my engine doesn't have enough cr for all these above 3 options. But in fact, what happen if my engine doesn't have enough CR but i still installing it? Would that be just i didn't maximum the potential output? Or the power will be even lower that the Toda A that i'm using? (Sorry if my question is stupid)

To Josh's ep3: ya, and i am far away to 12.9.. ****! I should get the RS ITR piston..

To Patriot: Compare with Jun3 and Toda B, is BC IV focusing on mid-range or peak hp? Since i won't do drags in Hong Kong. And i'm more focusing on mid-range like 6K - 8K power.

Thanks for all advice as of now.

 

pistons dont determine what times u run my friend..

your reading too deep into it , matter of fact. Compression ratio is just 1/10th of the equation for making power.. The majority part of CR is ultitlize the cams you choose. Plenty of people slap big cams into a b16 or stock gsr and make some good useable power.. But you dont make everything you should and/or really use.. JUN3/s2s2/bloxb's are all the same cam.
Todab's i've never used but i know b19coupe has, and they aren't that much more aggressive then jun3's
BC4's are on the more aggressive side of things..
YOUR cr as it sits, is fine for all of these cam choices, Its what your using your car for and where you wanna make power that counts, if you want a cam thats going to max out at 8k, toda's and jun3's are going to be your best bet.. buddy clubs are going to rev higher to max out that cam.

I recommend rocket, because you can get "custom" grinds for the amount you'll pay for any one of these cams "new".. Search around for rockets m22x version which is alitttle bit more aggressive then the jun3's but will idle and run on low in, like these cams will. and make your midrange you want.

 

Really appreciate for your words!

Guess i will go for Toda B (think it has better mid-range power compare with Jun3) among the above 3 options, but how bad the idle would be?

And will definitely search more info for the rocket.

 

I really wouldn't consider the BC4's that aggresive. Idle is normal and they're focused more towards the midrange.

 

they kinda are

 

You mentioned you haven't Dynoed your B20V yet with the TODA A's. I suggest you Dyno your motor first so you could have a good baseline for you to determine if you need a bigger cam for your motor.As I see it, you'll be good with your TODA A's considering your CR. I assume you have adjustable cam gears installed to maximize your A's.

 

The Buddy Club IVs and Jun 3s are VERY similar in the upper midrange. I've used both, and for over 12.0:1 would use the JUN 3s and Buddy CLub IVs for the same reason on the circuit or street. (I don't drag race either).

I still have my Toda Bs, but plan to retune the Jun 3s that i have to see about the real difference. So far w/ the Jun 3s I'm impressed. The Buddy Club IVs have had similar results to those I have spoken with that have experience.

 

Id go Toda, SpecB's are hella nice
i know 3 ppl with them in there set up
no problems or worries

 

Jun 3's will be more reliable as they use a small primary lobe which reduces wear and tear on the valvetrain as the TODA C's and Buddyclub iv's use nearly same lift on the primary and vtec lobes.

 

Just to correct this, the S2S2's and Blox B's are the same cams but the Jun 3's are the same as the Blox C's. Skunk produced the S2S2's to go up against the Jun 3's but they aren't the exact same specs/cam profiles like the Blox C's are.

 

 

JUN 3, ive seen them in 1.8-2.0 motors making huge power but mostly in mids to high end. I personally used sk2 st2 tuner series and skunk Pro2, they are awesome cams as well. u cant go wrong with either cams u suggested