03-16-2015, 02:01 PM

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Want to get a 120R motor? Forum members list the pros and cons in the thread. The majority of the replies are positive and have advice on modifications to consider. Some factors to consider are:

Read the full discussion below to find out more.

pros and cons with 120R motor

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#21

06-03-2014, 07:03 PM

senna

Road Master

Join Date: Apr 2012

Location: San Jose

Posts: 1,096

Likes: 2

Received 15 Likes on 11 Posts

Quote:

Originally Posted by Egldr05

I went a little different route and used my 05 Timken cases and built one from the ground up. So far I can't think of any cons and it sure as hell is a lot of fun to ride.

120"
4-5/8" crank (welded/trued/balanced)
SE 110 heads by Don (Dewey's Heads) @ 10.5 comp
Doherty intake with Zippers Max-Flo filter
Bandit Sportsman clutch
HPI 58mm throttle body W/HPI 5.3gps injectors
Dragula 2-1

Nice!

You can buy a crate motor or build a great motor!

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#22

06-03-2014, 09:14 PM

Egldr05

Road Warrior

Join Date: Jan 2007

Location: Belmont, MI

Posts: 1,415

Likes: 4

Received 17 Likes on 13 Posts

Quote:

Originally Posted by senna

Nice!

You can buy a crate motor or build a great motor!

I just returned from a 2K trip through the Smokies and I am quite happy with the build....although I know myself well enough to know I'll be experimenting with some different cams if for no other reason than I like screwing around with these machines.

Rick

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#23

06-03-2014, 09:33 PM

willknotsign

Advanced

Join Date: Jun 2013

Location: Michigan

Posts: 50

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Con: I had to repaint the rear of my fender from scraping it on the pavement.

Pro: I had to repaint the rear of my fender from scraping it on the pavement.

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#24

06-04-2014, 02:25 AM

hd_rolling

Supporter

Join Date: Feb 2008

Location: Grays Creek, NC

Posts: 4,133

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Received 146 Likes on 87 Posts

Quote:

Originally Posted by super2kc

Who would be the preferable folks to acquire this beast through?
HD here in Ottawa wanted $10K just for the crate + install etc.

Well this thread is a couple years old so it might have been better to start a new thread to get your answer. I'm sure you noticed everyone is still answering the question that was asked back in 2012.

I had bought mine and had it installed last year for under $6500, but that included some work they tried doing to the engine I had replace. $10,000 installed sounds pretty steep?

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#25

01-25-2015, 12:52 PM

HappyJack2952

Stage III

Join Date: Jul 2010

Location: Alabama

Posts: 3

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Received 1 Like on 1 Post

R120

I have a R120 on my 08 Roadking. Installed it stock the first time big mistake. The crank pin slipped had to have it torn down to have crank trued and wielded. Then lots other changes. Better oil pump, gear drive cams, heads work with upgrades, changed pistons. After all of that the motor makes 155 hp but motor is sound and I am very happy with it just wished I had did all the upgrades prior to first installation.

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