Please login or register.

Login with username, password and session length
Advanced search  
Pages: 1 [2]  All

Author Topic: Midrange cam for 124 motors  (Read 4988 times)

0 Members and 1 Guest are viewing this topic.

MCE

  • Guest
Re: Midrange cam for 124 motors
« Reply #15 on: December 11, 2018, 10:52:10 AM »

My go to for mid is the 662-2.  It likes 11:2-3 static but with 50 closing.  It’s only static.

That's a good one as well, decent midrange on a 124.

Static. People like to cling onto static (cranking numbers), which is fine when discussing
starting the engine. After its running, that goes out the window to a large extent.

Even though the intake runners are horrible on these engines, air momentum in the
intake tract will overcome some of that 'late close' as RPM increases.

a 124 should have allot of grunt, no matter what you do to it. (Even if you pick a crap
cam, it's still gonna have grunt).

The cam should be selected after you know what the heads flow.... that's JMO.
Logged

MCE

  • Guest
Re: Midrange cam for 124 motors
« Reply #16 on: December 11, 2018, 12:41:16 PM »

We're working on making a better intake manifold. It's going to be a challenge but we'll come up
with something pretty decent.
Logged

HD Street Performance

  • Vendor
  • 2.5K CVO Member
  • *
  • Offline Offline
  • Posts: 3118
Re: Midrange cam for 124 motors
« Reply #17 on: December 11, 2018, 01:11:59 PM »



a 124 should have allot of grunt, no matter what you do to it. (Even if you pick a crap
cam, it's still gonna have grunt).

Agreed, something is wrong and eyes should be on motor health, pipe, and tune before playing musical cams
Logged

BigLew

  • 2.5K CVO Member
  • **
  • Offline Offline
  • Posts: 2791
Re: Midrange cam for 124 motors
« Reply #18 on: December 11, 2018, 01:22:47 PM »

My experience with a 662-2 is not a good midrange cam . A good top end cam.

BigLew
Logged

MCE

  • Guest
Re: Midrange cam for 124 motors
« Reply #19 on: December 11, 2018, 01:56:50 PM »


a 124 should have allot of grunt, no matter what you do to it. (Even if you pick a crap
cam, it's still gonna have grunt).

Agreed, something is wrong and eyes should be on motor health, pipe, and tune before playing musical cams

There's a prevailing tendency out there for people to blame the cams. If you select a cam set based on the
airflow of the head and intended use (RPM/displacement) of the motor, it becomes pretty straight forward.

The pipe and tune often take a back seat in these situations. People are quick to condemn the cams
when things don't turn out right. More often than not, it's not the cam. It's a mismatch of components.


I agree with that statement, pipe and tune must match the rest of the build or you're wasting money and
time.

The pipe is critical, and it's often overlooked from a performance standpoint.
(Selecting a pipe based on looks, sound or some uneducated guess is not a winning strategy. The intake
manifold is also critical. But the choices are limited b/c the of the design of these motors, they don't lend
themselves well to getting creative with a manifold.

We're using some CFD models to come up with something that's "tuned" for the engine. Getting something
that physically fits in there is going to be a challenge.

If looks and sound are more important, then by all means, go that route. But don't expect miracles from
a well thought out build with a less than ideal pipe). 

Looks and sound are not even on my radar screen 
Logged

MCE

  • Guest
Re: Midrange cam for 124 motors
« Reply #20 on: December 11, 2018, 02:20:48 PM »

My experience with a 662-2 is not a good midrange cam . A good top end cam.

BigLew

If the motor is big enough, and/or the bike is light enough, it could be a great midrange cam.  :vrolijk_24:
Logged

HD Street Performance

  • Vendor
  • 2.5K CVO Member
  • *
  • Offline Offline
  • Posts: 3118
Re: Midrange cam for 124 motors
« Reply #21 on: December 12, 2018, 04:43:56 PM »

The manifold needs to be 3d printed and hopefully made of a material that is not a good heat conductor.
Logged

MCE

  • Guest
Re: Midrange cam for 124 motors
« Reply #22 on: December 12, 2018, 07:42:22 PM »

The manifold needs to be 3d printed and hopefully made of a material that is not a good heat conductor.

I'm still in the design/development stage. Making it fit on the bike is going to be the biggest challenge.

first one is going to be CNCed billet aluminum
 
« Last Edit: December 12, 2018, 08:27:35 PM by MCE Performance »
Logged

Nocvo

  • Newbie
  • *
  • Offline Offline
  • Posts: 32
  • www.CVOHARLEY.com

Re: Midrange cam for 124 motors
« Reply #23 on: December 13, 2018, 12:41:50 AM »

We're working on making a better intake manifold. It's going to be a challenge but we'll come up
with something pretty decent.
Space is at a premium, be interesting to see what you come up with.
Logged
Pages: 1 [2]  All
 

Page created in 0.133 seconds with 21 queries.