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 4914 times)

0 Members and 1 Guest are viewing this topic.

ltank

  • 1K CVO Member
  • *
  • Offline Offline
  • Posts: 1214
    • LA

    • CVO1: 2000 FXR4 S&S V111, CustomS.S. 2-1 exhaust, Primo-Rivera OD 6 speed, 49mm Custom Front End Ohlins 30mm Fork cartridges , Hyperpro Shocks, Barnett Scorpian Clutch
    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
    • CVO3: 1989 FXRS, 1990 Custom 100" Shovelhead/ EVO
Midrange cam for 124 motors
« on: November 28, 2018, 06:48:53 PM »

What's the best midrange cam for 124 motors? I ride at 3200 most  of the time. What about  the S&S 625 that has a 55 degrees intake valve close. The 585 cam closes  at 45 but is sluggish on a big motor.
Doesn't have the Pep that  I like. Thanks
Logged

Unbalanced

  • FUD Examiner
  • 5k CVO Member
  • ***
  • Offline Offline
  • Posts: 6708

    • CVO1: 2011 SESG,
    • CVO2: 2004 SEEG Pumpkin,
    • CVO3: 2002 Police Roadking, Maudie and Maybelle Slayer
Re: Midrange cam for 124 motors
« Reply #1 on: November 28, 2018, 07:11:24 PM »

I wouldn’t use the 625 it has to much exhaust my choice would be 585 or more compression and 640.    Something seems astray if the 585 is sluggish (expect it is your pipe it’s too big for your build). 

The group of them we have down here jump out real quick and in stock trim are delivering 134-142 torque and 118 to 128 HP

With the light compression it will be imo tough to get what your after at 10 to 1   Have to make trade offs.   Without a Dyno you have no real way of gauging your a/f other that what you think is happening.   You might consider a Wego or other device to see where your A/F is actually at.

What do your plugs look like?    Have seen this exact scenario with another RB pipe on a 124.   Shannon finally relented, he put a thunderheader on it and couldn’t be happier.   My opinion is your pipe is hurting you where you want the power.   I’d try a smaller pipe before I’d change the cams.  Maybe someone has one u could borrow just for a test?

Hope ya figure it out.

Logged
HBRR Florida Chapter,  STILL - The Fastest Chapter - Proven yet again Bikeweek 2017

ltank

  • 1K CVO Member
  • *
  • Offline Offline
  • Posts: 1214
    • LA

    • CVO1: 2000 FXR4 S&S V111, CustomS.S. 2-1 exhaust, Primo-Rivera OD 6 speed, 49mm Custom Front End Ohlins 30mm Fork cartridges , Hyperpro Shocks, Barnett Scorpian Clutch
    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
    • CVO3: 1989 FXRS, 1990 Custom 100" Shovelhead/ EVO
Re: Midrange cam for 124 motors
« Reply #2 on: November 28, 2018, 09:32:32 PM »

The S&S V124 I have used the same pistons as the
T124LC and 585 cam. I talked  to S&S all the other  parts are same. Heads, rocker rollers, Super G carb.
Only  difference  was the cam and pistons. The 600 has. 25 less lift, all other is same. The 585 is torque  low end  cam, the 600 is midrange  cam the 640 is a mid/ top end cam. So the 600 should  be fine for touring.  I will see! Thanks  guys.
Logged

ltank

  • 1K CVO Member
  • *
  • Offline Offline
  • Posts: 1214
    • LA

    • CVO1: 2000 FXR4 S&S V111, CustomS.S. 2-1 exhaust, Primo-Rivera OD 6 speed, 49mm Custom Front End Ohlins 30mm Fork cartridges , Hyperpro Shocks, Barnett Scorpian Clutch
    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
    • CVO3: 1989 FXRS, 1990 Custom 100" Shovelhead/ EVO
Re: Midrange cam for 124 motors
« Reply #3 on: November 28, 2018, 09:55:54 PM »

I ordered  some used staggered  dual pipes with smaller 1 7/8" head pipes with 2" ends with baffles.
If that  works  I can take  it from  there.  Gonna  try the 600 cam too. To me I prefer  the sound  of two pipes
Logged

TorqueInc

  • Get your facts first, then you can distort them as you please. Mark Twain
  • Vendor
  • Senior CVO Member
  • *
  • Offline Offline
  • Posts: 391
Re: Midrange cam for 124 motors
« Reply #4 on: November 28, 2018, 11:28:35 PM »

625 straight up is kind of a dud

Advanced 4 degrees at 10.8-11-1 works pretty well

What's the static compression of the engine now?

10:1?
Logged
2011 SG Sedona Orange 105" 125/123

www.jwperf.com

prodrag1320

  • AMRA & AHDRA P/D record holder
  • Vendor
  • Elite CVO Member
  • *
  • Offline Offline
  • Posts: 917
Re: Midrange cam for 124 motors
« Reply #5 on: November 29, 2018, 06:51:57 AM »

look at the T MAN .625

HD Street Performance

  • Vendor
  • 2.5K CVO Member
  • *
  • Offline Offline
  • Posts: 3118
Re: Midrange cam for 124 motors
« Reply #6 on: November 29, 2018, 09:19:09 PM »

The Tman 590 at a conservative 10.4 or 660PS2 at 10.8
« Last Edit: November 29, 2018, 09:21:26 PM by HD Street Performance »
Logged

FlaHeatWave

  • 1K CVO Member
  • *
  • Offline Offline
  • Posts: 2208

    • CVO1: '01 FXDWG2 RED 103 6sp
    • CVO2: '05 FLHTCSE2 CHERRY
    • CVO3: '09 FLTRSE3 YELLOW 117/DD7
Re: Midrange cam for 124 motors
« Reply #7 on: November 29, 2018, 10:40:45 PM »

look at the T MAN .625

If you have a conventional cam chest, not the s&s, and you have compression releases, then the 625 T-man or the new 585 T-man, at 10.4-5 will be just what you're looking for
« Last Edit: November 30, 2018, 02:44:07 AM by FlaHeatWave »
Logged
"I've read dozens of books about heros and crooks, and learned much from both of their styles"

HD Street Performance

  • Vendor
  • 2.5K CVO Member
  • *
  • Offline Offline
  • Posts: 3118
Re: Midrange cam for 124 motors
« Reply #8 on: November 30, 2018, 11:42:06 AM »

Others, lower lift
Kuryakyn 24D
TTS 150
Both won't need big compression but will be good manered, easy on valve train, and easy to tune
Logged

1roadking

  • Senior CVO Member
  • ****
  • Offline Offline
  • Posts: 393
  • www.CVOHARLEY.com
    • NH


    • CVO1: 2016 SE Streetglide
Re: Midrange cam for 124 motors
« Reply #9 on: December 09, 2018, 09:33:03 PM »

I’m running a tman 590 in a 117 at 10.7 to one and it runs cool and pulls from 2500 and doesn’t quit till redline.
Logged

prodrag1320

  • AMRA & AHDRA P/D record holder
  • Vendor
  • Elite CVO Member
  • *
  • Offline Offline
  • Posts: 917
Re: Midrange cam for 124 motors
« Reply #10 on: December 10, 2018, 07:27:30 AM »

I’m running a tman 590 in a 117 at 10.7 to one and it runs cool and pulls from 2500 and doesn’t quit till redline.


t man 590 is a very good choice.set @ 10.8-1,or like I said earlier,t man 625 set @10.25-1

HD Street Performance

  • Vendor
  • 2.5K CVO Member
  • *
  • Offline Offline
  • Posts: 3118
Re: Midrange cam for 124 motors
« Reply #11 on: December 10, 2018, 01:26:42 PM »

But the 585 is a decent choice for what you describe.
Use it. A stock crate 124 work perfect there.
Eyeball should be on motor health (compression test/leakdown), tune and pipe.
Listen to unbalanced,  he provides real world
Logged

MCE

  • Guest
Re: Midrange cam for 124 motors
« Reply #12 on: December 11, 2018, 02:11:38 AM »

TMan 590s work well in those motors with some head work and a valve job that compliments them.
Flat TQ (130/130 from 110s at 10.5 is pretty standard. Intake close is just one parameter, the overlap
is a little more important imo, and 55* close is kinda working against you in the "midrange" department.

Stock heads hold you back allot as well, the short side is too abrupt and the bowls need help.

You'd be way ahead of the fame by making the heads work better and staying conservative on the cam.

No amount of cam can truly compensate for a bad head. You can band-aid some port issues
« Last Edit: December 11, 2018, 02:27:50 AM by MCE Performance »
Logged

prodrag1320

  • AMRA & AHDRA P/D record holder
  • Vendor
  • Elite CVO Member
  • *
  • Offline Offline
  • Posts: 917
Re: Midrange cam for 124 motors
« Reply #13 on: December 11, 2018, 07:22:04 AM »

But the 585 is a decent choice for what you describe.
Use it. A stock crate 124 work perfect there.
Eyeball should be on motor health (compression test/leakdown), tune and pipe.
Listen to unbalanced,  he provides real world


S&S 585`s are a great cam and use them a lot in different builds,but wouldn't be my first (or second) choice for good midrange on a 124",much better choices out there

hrdtail78

  • Vendor
  • Elite CVO Member
  • *
  • Offline Offline
  • Posts: 762
Re: Midrange cam for 124 motors
« Reply #14 on: December 11, 2018, 09:11:55 AM »

My go to for mid is the 662-2.  It likes 11:2-3 static but with 50 closing.  It’s only static.
Logged
Pages: [1] 2  All
 

Page created in 0.149 seconds with 21 queries.