Anyone ever heard of these "Rocket Motorsports H22 VTEC Camshafts"? Apparently they're regrinds. What's the pros/cons of regrinds. They seem to make good power looking at the dyno the site provided. And they're relatively cheap! Here's a link to them http://www.kteller.com/store/product...oducts_id/1070

240 duration at 0.050 and 11.5mm lift for both in/ex

Converted that 11.5mm to .453(in)/.453(ex) (is that the right conversion for gross lift?..someone double check me)

Crower Stage 2's are:

Int-248 mid Exh-240 mid @ 0.050 with gross lift Int-.466 mid Exh-.465 mid

I don't really know much about lift and all that. Can someone shed some light on how these cam's compare?

 

Here's a thread Kteller made with a dyno. One piece of advice do not take someone else's dyno to heart. Fron what Kteller said they make more power than Type-S cams. I think it's 350 for the regrind with Core Charge and you get your 50 bucks back when they receive your old cams. For the money it's awesome.

From what Rocket says,if you were to buy the valvetrain, it can handle 9k+ revs, not saying you should, but in case you were to mishift. There have been many account where people have mishifted and their valvetrain was A-OK.

Here's the thread:
https://honda-tech.com/zerothread?id=1017085

 

They may do great work, I'm not knocking them at all .......... but to me regrinds =

Buy a set of OBX stage 1's or Skunk stage 1's (same thing for all intents and purposes) or jsut get a set of Type S cams. The OBX one's are cheaper than a re-grind, and will be better and last longer.

 

How about valve train? Can the stock valvetrain handle these RM Cams? That's one reason why I was looking at these: decent gains for drop in cams. On the site it says valvetrain not required with stock revlimit. How accurate is that?

 

They should do okay with stock valvetrain. They lift isn't very extreme, they're just trying to make them a little fatter for some more duration. Though it's always better to play it safe, just so you don't end up costing yourself more down the road.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DOHCVTEC190 &raquo;</TD></TR><TR><TD CLASS="quote">How about valve train? Can the stock valvetrain handle these RM Cams? That's one reason why I was looking at these: decent gains for drop in cams. On the site it says valvetrain not required with stock revlimit. How accurate is that?</TD></TR></TABLE>

As long as you're not revving past the stock h22 redline than you're fine. To tell you the truth I would go with the new valvetrain, it's not even that expensive. Maybe like 200-300 for the RM or Omni Valvetrain.

 

Yeah, it's not such a money issue (well it kinda is). But I've read that if you upgrade to stiffer springs, then it's advisable to convert to a manual tensioner. If I were to do that I would go again and do a timing belt job, which all adds up. And to install springs and retainers, the head needs to be pulled right? I don't think I'm up for a job that big. I liked the idea of just dropping the cams in.

 

first off, the obx or s2s1 cam will make less power, and on a motor with 8 bent valves, these cams outdid the type s cams by at least 10 hp over the whole band and then 15+ at higher rpm.....a very good cam

the stock valvetrain was said to be ok, but jdogg, who ran these cams, said they had some trouble with em at about 7800 i believe, and if you miss a shift, kiss your valves goodbye, the valvetrain is cheap and well made, just go ahead and get it.....

and as far as regrinds being weak, they really dont have that problem, i would trust an oem honda core regrind more than OBX, come on think about it, only one person has run the obx cams so far, and probably has less that 6k on them, so you have no idea how they will last, but i know the honda cam will last over 200k, and i dont think the regrind is gonna change that much....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">
and as far as regrinds being weak, they really dont have that problem, i would trust an oem honda core regrind more than OBX, come on think about it, only one person has run the obx cams so far, and probably has less that 6k on them, so you have no idea how they will last, but i know the honda cam will last over 200k, and i dont think the regrind is gonna change that much....</TD></TR></TABLE>

You know you just made a really good point... I never though of that.

 

Those are really low torque numbers for an H22 motor. They almost resemble a
B-series Vtec dyno graph with the high HP and lower TQ.

Just thought I would mention that observation.

 

That dyno is not about actual numbers. It shows change, which is quite dramatic. Read the thread more closely, and do some research on the nature of that machine.