I'm currently building my B18C5 engine and I'm a little consfused by which cam to pick. I've always wanted Jun 3's but lately i've been reading a couple of threads about M24's being better. I contacted Rocket directly and he recommended M22's for my project. Does anyone have any recommendations? I'm looking for 200 whp.

Current setup:
B18C5 engine (81mm bore)
Ported and Polished Pr3 head
RM valvetrain
Type R intake valves
CTR pistons
DC JDM 4-1 header
AEBS intake manifold
STR 68mm Throttle
Hondata

Thanks for the help.



Modified by Yusuke at 4:07 PM 9/27/2004

 

Well, a couple things. Your motor comes with pnp and the valves, so there is no use mentioning those. The reason he recommended the M22 is because of how mild you motor is, currently. Its your decision on whether you use it or not. Although the M24 is an aggressive cam, you have to think about the life of your engine, too. Don't throw something in the head (or the rest of the motor) that will prematurely wear it out. And another thing about that compression, TUNING. I mean a third or fourth gear pull on the dyno to get every parameter set for fuel and ignition. I think the 200 whp isn't to far fetched, but if not you'll come close.


Modified by nathan atwell at 8:55 AM 9/27/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nathan atwell &raquo;</TD></TR><TR><TD CLASS="quote">Well, a couple things. Your motor comes with pnp and the valves, so there is no use mentioning those. The reason he recommended the M22 is because of how mild you motor is, currently. Its your decision on whether you use it or not. Although the M24 is an aggressive cam, you have to think about the life of your engine, too. Don't throw something in the head (or the rest of the motor) that will prematurely wear it out. And another thing about that compression, TUNING. I mean a third or fourth gear pull on the dyno to get every parameter set for fuel and ignition. I think the 200 whp isn't to far fetched, but if not you'll come close.


Modified by nathan atwell at 8:55 AM 9/27/2004</TD></TR></TABLE>
i also read some good stuff on the m24 cams, are you saying that these cams will wear out early? or are you saying that aftermarket cams wear out early? how long do you think they will last?

 

I think the M24's are great cams. Since they are cut from Crower blanks I think they'll last as long as any other cam. Its a great cam, its just your motor is still kind of mild for that aggressive of a cam. But, its your moto.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Yusuke &raquo;</TD></TR><TR><TD CLASS="quote"> I contacted Rocket directly and he recommended M22's for my project. </TD></TR></TABLE>

if thats what he says then thats what i would go with. i think he would know best about his cams

 

IIRC, Omniman's 200whp B16 project used M22's

 

I have the same set up amlost with a b16, and jun valvtrain with jun three's. I made 195 to the wheels. Stick with the jun. you'll make 200 no problem!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nasi &raquo;</TD></TR><TR><TD CLASS="quote">I have the same set up amlost with a b16, and jun valvtrain with jun three's. I made 195 to the wheels. Stick with the jun. you'll make 200 no problem!</TD></TR></TABLE>

IMO, the M22's are better, and in every dyno plot I have seen they absolutely rape the Jun 3's in the midrange. They are quite a bit cheaper too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote"> Omniman's 200whp B16 project used M22's</TD></TR></TABLE>

they also used the dynamic A's i believe which put out a lil more power if i remember

 

I would go with what Rocket said M22s.

 

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

IMO, the M22's are better, and in every dyno plot I have seen they absolutely rape the Jun 3's in the midrange. They are quite a bit cheaper too.</TD></TR></TABLE>

could u link me??ive hardly seen any dynos of m22's let alone vs a jun3...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GOLDBERG &raquo;</TD></TR><TR><TD CLASS="quote">could u link me??ive hardly seen any dynos of m22's let alone vs a jun3...</TD></TR></TABLE>

I don't remember where I saw that. All I can find right now is Rocket talking about what he has seen.

http://m24x.zeroforum.com/zerothread?id=1944

Edit: Haha, I just noticed that you posted on that thread.


Modified by rochesterricer at 11:38 PM 9/30/2004

 

stick with the jun3's man and you should be able to hit close to 200whp with that set up and some good tuning besides you can find dyno graphs of that cam making that much power stick with something you know will work the first time

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93gsrciviconnos &raquo;</TD></TR><TR><TD CLASS="quote">stick with the jun3's man and you should be able to hit close to 200whp with that set up and some good tuning besides you can find dyno graphs of that cam making that much power stick with something you know will work the first time</TD></TR></TABLE>

In that case he should run the M24's, because we KNOW those make more power than the Jun 3's.

 

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

In that case he should run the M24's, because we KNOW those make more power than the Jun 3's.</TD></TR></TABLE>


You could jun fours.They make very good midrange. I dont have any experience with M22 or M24 cams. I would like to see a graph too. If they make more power then I am all for them. However I do know Jun took six years, yes six years and two generations to come up with there current cam design. These cams will last. not saying the others wont, just jun's have been proven

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nasi &raquo;</TD></TR><TR><TD CLASS="quote">You could jun fours.They make very good midrange. I dont have any experience with M22 or M24 cams. I would like to see a graph too. If they make more power then I am all for them. However I do know Jun took six years, yes six years and two generations to come up with there current cam design. These cams will last. not saying the others wont, just jun's have been proven</TD></TR></TABLE>

You need at least 13:1 compression to make power on the Jun 4's, so they really aren't an option for him. IIRC I think Tbone made more power with the Skunk2 Stage 3 cams than with the Jun4's anyways.

Either way, Rocket's recommendation of M22's is the best option for a street motor(for what your goals seem to be). If a proven cam is the most important thing to you, go with Skunk2 S2's. There is no other cam that has made more 200+whp motors than those.

Edit: here is the graph you requested: http://m24x.zeroforum.com/zerothread?id=730

 

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

You need at least 13:1 compression to make power on the Jun 4's, so they really aren't an option for him. IIRC I think Tbone made more power with the Skunk2 Stage 3 cams than with the Jun4's anyways.

Either way, Rocket's recommendation of M22's is the best option for a street motor(for what your goals seem to be). If a proven cam is the most important thing to you, go with Skunk2 S2's. There is no other cam that has made more 200+whp motors than those.

Edit: here is the graph you requested: http://m24x.zeroforum.com/zerothread?id=730 </TD></TR></TABLE>


Like I said I am all for these cams. I just dont have any experience them. As far as skunk 2's go they are just a knock off of jun 3's. You can use Jun 4's with Jun pistons wick are around 11.5.1-11.7.1 compression, and they make great power. It sounds like you have alot of experience with rocket cams. anyway in my opinion I would use jun's. But I am always open to new ideas, So maybe you,ll have good luck with the m22 or m24. Good Luck

 

I like the M22's, but there are TONS of options for a setup like this. Do a search and you will find a wide variety of setups at, around, or above 200whp. Since you are already talking to Rocket, I would listen to him. He knows his ****.

 

Just out of curiosity....Where is rocket motorsports? In the Usa?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nasi &raquo;</TD></TR><TR><TD CLASS="quote">Just out of curiosity....Where is rocket motorsports? In the Usa?</TD></TR></TABLE>

SoCal. In a suburb of LA.

 

Former Jun3 owner, current M22 owner, does that say anything? And im making MUCH MORE POWER

 

Saw your M22 charts on Rocket's board. Nice gains

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98itR484 &raquo;</TD></TR><TR><TD CLASS="quote">Former Jun3 owner, current M22 owner, does that say anything? And im making MUCH MORE POWER </TD></TR></TABLE>

Saw your charts too and they look badass

I sorta want to ditch toda c and try it out......i was supposed to get those cams in the beginning of the year, but i didn't feel like waiting any more longer than i did

 

An extra 10whp on an incomplete tune, eh, its okay

The low-end and midrange increase is freakin insane!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98itR484 &raquo;</TD></TR><TR><TD CLASS="quote">Former Jun3 owner, current M22 owner, does that say anything? And im making MUCH MORE POWER </TD></TR></TABLE>

I'm looking at ur old/new setup charts. I thought it was simply a change from the JUN3s to M22s. But you got a ported/milled head, compression bumped up a tad, and new engine management (hondata).

Good power though. Impressive stuff from Rocket