Bolt on part recipe for max torque?

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Jan 5, 2013 | 03:55 AM

#11

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

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From: Bedford UK

zimm - see?!

Bob Woods and Scott at Hillside - pure alchemy!

Jan 5, 2013 | 07:57 AM

#12

zimm

Thread Starter

Road Captain

Joined: Mar 2006

Posts: 579

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From: Virginia

Quote:

Originally Posted by Hillsidecycle.com

Bob Wood W-6 cam
10.0 cr.
Our Stage II Heads
Dyna 2000i or Crane HI-4
Either a re-worked CV, 42 Mik, or S&S E
Supertrapp 2/1, Thunderheader, or Cycle Shack 2/2's.
80-85 hp, low 90's torque, with EXCELLENT fuel economy.
Must've built 75-100 of these over the years.......
Reliable, smooth combination.
Not enough?
A bit more compression and a Wood 8.
That will hover @ 95 hp, and 95 ft/lbs.
Scott

That sounds great. How is the 10.0 CR achieved? Through milling, gaskets, or piston swap?

What would be the parts list and cost? Assuming I send in my heads for the stage II and new valves/springs, cam, bearing upgrade, lifters, push rods, ignition, and what carb work on my CV...

How much am I giving up over thunderheader with my samson 2-2 exhaust? I just put it on, hate to throw away $600 if it's only a few HP....

Jan 5, 2013 | 08:04 AM

#13

grbrown

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Joined: Jun 2007

Posts: 45,429

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From: Bedford UK

zimm, best if you contact Scott direct, to talk things through in detail. I changed from Samson TDs to a Supertrapp Supermeg and gained 15% torque in the mid range. That is a serious improvement! Bike was set up on a dyno for each system, by the same dyno man. What really surprised me is how much smoother and sweeter running my bike is, something I hadn't expected. The only change was the exhaust system, plus fine tuning on the dyno. I am a 2-into-1 convert!

Jan 5, 2013 | 10:51 AM

#14

cowboy 51

Road Master

Joined: Nov 2012

Posts: 794

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From: Alvin TX

For the carb work I would stay with the CV , get with Ken at CVperformence.com , if you already have the supertrapp stay with it , best 2-1 out there , I'am not up to date with hillside , But have heard a lot of good about them , also there's veetwins down in Fla kirby builds & drag races these engines he's on HTT.com or bike-talk.com theres a guy in canada who swears by his work & with the shipping cost in & out of there he must be good

Jan 5, 2013 | 11:34 AM

#15

smitty901

Seasoned HDF Member

Joined: Feb 2008

Posts: 22,999

Likes: 11,439

The EVO can be woke up pretty easy
May I suggest you check out http://www.nightrider.com/biketech/hdbuildstage3.htm
They have a lot to offer in the way of information.

Jan 5, 2013 | 12:51 PM

#16

texashillcountry

Dirt don't hurt

Joined: Jan 2011

Posts: 21,065

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From: Haslet Texas

How much horse power/ tork do you want.
Bolt on will give you small increases (up to around 30 or so depending on what you go with)

There is no replacement for cubic inches.
http://www.sscycle.com/feature/featureview.php?s_id=28
Look at the dyno specs

Yes a new motor is more expensive but the closer you leave a motor to stock the longer it will last.

Jan 5, 2013 | 06:49 PM

#17

Jasper86

Road Captain

Joined: Sep 2012

Posts: 675

Likes: 32

From: Massachusetts

scott: for the hell of it, what are you guys running for slow/main jets on a build like that? (W6 / 10:1 / 42 mikuni / supertrapps / dyna2000)

looking at the possibility of getting mine started tomorrow, and gotta get it dialed in *enough* that I can take it down the highway (gotta calibrate the new speedo...dont wanna rack up thousands of miles when it hits the dyno in a few weeks lol)