Will aftermarket cams wear out the rocker arms? I am about to pick up some buddyclub spec 3+, then my friend tells me i should just stick with oem honda cams because of the situation with the higher lift/duration cams. Any true? Any experiences? THanks

 

nope, they wear like oem cams,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eddiebx &raquo;</TD></TR><TR><TD CLASS="quote">nope, they wear like oem cams, </TD></TR></TABLE>
I was under the impression that any of the bigger cams with aggresive ramp angles will eventually wear out your rocker arms. its just a matter or time, but you can usually get 40-70k out of the engine. just depends how you drive it and what not.

if you are running a built bottom end, you would probably do a rebuild around 40k or whatever miles.

 

Thanks for the replies.

 

dunno, i've had a set of skunk stage 2s, daily driven, and have put a good 20-30k hard miles, and there is zero wear on the rocker pads

 

I hear the materials that some cam manufactures use will wear the rockers faster. Here is something I saw go by yesterday. I personally don't don't have much experience with it but thought I would pass the info along.

https://honda-tech.com/zerothread?id=914334

Look at Omniman's post on the second page.

 

I originally was going to use Skunk@ Stage 3's and they warned me about having to tear down the motor frequently to check for wear and rebuild items eventually. I went with the Stage 2's and no problems so far. So from the horses mouth I'd have to say that yes very aggressive cams will decrease the longevity of your internals.

 

I run skunk stg 3's with one of the hardest vspring setups available, I have 5000+ miles on them with over 150 dyno pulls. I did a valve adjustment on it fri and rockers looked perfect as well as the cam lobes. I will also note that these are the same rockers that saw over 10000 miles with toda b's, jun 3's, Rocket's m24e's and probably ones I cant remember..lol
But like Eric said, accelerated wear is common with any race part.


Modified by Tbone at 6:17 PM 9/9/2004

 

I have seen Crower Cams eat up rocker arms before. It was Crower stage 2's in a H22A. Ate the the VTEC rocker pretty nice. I'll see if i can dig up the pics. Nasty. Also, the cams snapped. Yikes!

 

I had a set of skunk stage 1's cut grooves into a set of my rockers, but it had nothing to do with it's size . Poor quality cores that flaked apart.

 

The biggest factors are (1) the stiffness of the springs, (2) the aggressiveness of the cam, and (3) the amount of time you spend in VTEC. Stiffer springs mean more friction between the lobe and follower since the cam lobes have to 'push' harder to open the valves. This increases wear. A more aggressive cam means that the cam has to push harder as well, since the force required to move a spring increases as you push it farther. For the same reason as the stiffer springs, this increases wear. And using VTEC more increases wear more since you are using a bigger lobe more often and the smaller lobes less often.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">The biggest factors are (1) the stiffness of the springs, (2) the aggressiveness of the cam, and (3) the amount of time you spend in VTEC. Stiffer springs mean more friction between the lobe and follower since the cam lobes have to 'push' harder to open the valves. This increases wear. A more aggressive cam means that the cam has to push harder as well, since the force required to move a spring increases as you push it farther. For the same reason as the stiffer springs, this increases wear. And using VTEC more increases wear more since you are using a bigger lobe more often and the smaller lobes less often.</TD></TR></TABLE>
Thanks for the great reply.

What kind of springs would you recommend for some mild cams? ie. toda a's, skunk stage 1, or buddyclub spec 3's

 

omniman or portflow or alot of people run itr outers and portrflow inners

 

I ran Toda C's and Rocket's Valve train and it ate up my rockers like no tomorrow
btw it had less than 4000 miles on it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96gsr4dr &raquo;</TD></TR><TR><TD CLASS="quote">
Thanks for the great reply.

What kind of springs would you recommend for some mild cams? ie. toda a's, skunk stage 1, or buddyclub spec 3's</TD></TR></TABLE>

I've got Toda A's and I stuck with an ITR valvetrain. Last time I did a valve adjustment, my rocker arms looked fine and I've had these cams for over 10k miles. My thinking is that the OEM valvetrain will cause less stress, and it's made to last, so it won't be a big contributor to wear. The ITR valvetrain will suit you just fine if you don't plan on revving past 8400.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HypeR1004 &raquo;</TD></TR><TR><TD CLASS="quote">I ran Toda C's and Rocket's Valve train and it ate up my rockers like no tomorrow
btw it had less than 4000 miles on it</TD></TR></TABLE>

I ran Portflow itr combo with my toda b's and that did alot of wear also. BUt my RM stuff is over 5 k now with no problems or wear.. The portflow itr stuff also did wear on the toda cams themselves.

 

Aftermarket cams do not necessarily have the same wear patterns as stock cams.

There are many reasons as to why.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKhatch &raquo;</TD></TR><TR><TD CLASS="quote">Aftermarket cams do not necessarily have the same wear patterns as stock cams.

There are many reasons as to why. </TD></TR></TABLE>
Is there a thread you can refer to?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96gsr4dr &raquo;</TD></TR><TR><TD CLASS="quote">
Is there a thread you can refer to? </TD></TR></TABLE>

I don't think so.

It's a bunch of dynamics and physical properties and bla, bla, bla.

Different base circle, different ramp on the leading edge of the cam lobe, peak lift and duration over a give time. etc...

None of which I am familiar enough with to talk about in detail. More or less most cams you hear talked about have been race/street proven by fellow enthusiasts and as long as you know what you are doing you shouldn't have any problems.

I would say that 90% (or so) of problems that people run into with name brand aftermarket parts are due to user error.

 

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

I ran Portflow itr combo with my toda b's and that did alot of wear also. BUt my RM stuff is over 5 k now with no problems or wear.. The portflow itr stuff also did wear on the toda cams themselves.</TD></TR></TABLE>

damn....thats gotta suck it's probably something with the toda's

I would've gotten the M22's but waited too long, 2 month wait so i said *** it and just went with the Toda C's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eddiebx &raquo;</TD></TR><TR><TD CLASS="quote">dunno, i've had a set of skunk stage 2s, daily driven, and have put a good 20-30k hard miles, and there is zero wear on the rocker pads</TD></TR></TABLE>