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[GtreetSlide]

What would it take to put a HD 120 in a 2009 street glide?

Good idea? Bad idea?

Thanks, Jim

[HD Street Performance]

Good idea well sure if you have the funds. But in the perpetual horse race the S&S 124 may have passed that bad boy for nearly the same cost.
The S&S is plug and play and with a better clutch, TB, and injectors that they both will need. The 124 is minus the issues the 120 HD motor is encountering. The 120r is a good motor but you will find very few that are installed and run as they come out of the crate, guys need to "clean them up". Known issues are the lifters and one I have seen on motors with a few miles are the valve seals leaking and nearly siezed rear exhaust valves.
The S&S motor has a better oil pump design, 4 extra inches, and a warranty the HD motor does not have.

[GtreetSlide]

Good idea well sure if you have the funds. But in the perpetual horse race the S&S 124 may have passed that bad boy for nearly the same cost.
The S&S is plug and play and with a better clutch, TB, and injectors that they both will need. The 124 is minus the issues the 120 HD motor is encountering. The 120r is a good motor but you will find very few that are installed and run as they come out of the crate, guys need to "clean them up". Known issues are the lifters and one I have seen on motors with a few miles are the valve seals leaking and nearly siezed rear exhaust valves.
The S&S motor has a better oil pump design, 4 extra inches, and a warranty the HD motor does not have.

Thanks, just considering my options right now... Appreciate the feedback a bunch...

[Rooster]

Good idea well sure if you have the funds. But in the perpetual horse race the S&S 124 may have passed that bad boy for nearly the same cost.
The S&S is plug and play and with a better clutch, TB, and injectors that they both will need. The 124 is minus the issues the 120 HD motor is encountering. The 120r is a good motor but you will find very few that are installed and run as they come out of the crate, guys need to "clean them up". Known issues are the lifters and one I have seen on motors with a few miles are the valve seals leaking and nearly siezed rear exhaust valves.
The S&S motor has a better oil pump design, 4 extra inches, and a warranty the HD motor does not have.

I had the leaking seals twice, the second time the rear exhaust valve was stuck open. I carried them back to Dan Baisley both times and watched him beat the stuck valve loose. He fixed and cleaned them both times at no charge which was appreciated. They were my heads from the 110 motor that he did the Pro Street job on at about $1800 so I was happy I didn't have to pay more. I like the S&S 124 idea and would have done that if it was available back then. I ended up with a Jims 131 which blew up at about 8k. Jim's rebuilt it on thier dime and I now have made it through 2 riding seasons without issues. I do know this time around is a totally better built motor just in how it runs.

[HILLSIDECYCLE.COM]

What would it take to put a HD 120 in a 2009 street glide?

Good idea? Bad idea?

Thanks, Jim

I'd consider a 124" S&S engine, as already mentioned.
Any manufacturer that offers any type of over-bored/longer-stroked powerplant including the Moco, is only riding on S&S's coat tails anyway.
Scott

[jagonza1]

be careful with the hd 120.  My buddy put one in and it lasted  a little over a year and half. the lifter fell apart and took out the entire bottom end and the factory wont cover it even thought the lifter was defective and I am readidn other articls on guys having problems with those lifters smost were lucky and changed befor damage done and are using s&s lifters.

[grc]

be careful with the hd 120.  My buddy put one in and it lasted  a little over a year and half. the lifter fell apart and took out the entire bottom end and the factory wont cover it even thought the lifter was defective and I am readidn other articls on guys having problems with those lifters smost were lucky and changed befor damage done and are using s&s lifters.

Sadly the first thing knowledgeable people have to do to their brand new right out of the crate 120R is to change out the known problematic parts like the lifters.  I'd be damned if I'd pay H-D for a supposedly ready to install engine and immediately have to modify it to make it reliable.

The S&S idea makes a lot more sense, and S&S actually gives you a warranty on their engine.  Harley on the other hand just buries it's corporate head in the sand and keeps selling crap they know is problematic and then refuses to stand behind it when it fails. 

Jerry

[sadunbar]

be careful with the hd 120.  My buddy put one in and it lasted  a little over a year and half. the lifter fell apart and took out the entire bottom end and the factory wont cover it even thought the lifter was defective and I am reading other articles on guys having problems with those lifters most were lucky and changed before damage done and are using s&s lifters.

Safe to say (sad to say) the lifter issue is prevalent with all current design MOCO V Twin motors, not unique to the 120r motor.  There's been no shortage of folks on this very site that have suffered the same lifter issues on their 96 and 110 motors - for the past several years.  Personally, I started doing cam chest inspections every 10K miles four or five years ago, and quite often replace lifters in the process, in my 110 motors.  Interestingly enough, I have over 15K on my 120r motor and have yet to need to change lifters (but I consider that a fortunate anomaly). 
This is a problem that did not exist prior to the current V Twin motors.  The "original '04 and '05 103 motors did not suffer these lifter failures...  It will be interesting to see if the S&S version of a Twin Cam performs satisfactorily in this area or not...

[Red Dragon]

I just read this thread (I'm trying to learn ALL I CAN), and interestingly enough, although I just have a "PeeWee motor" (that's what everybody keeps calling it, so I'll go with it), I am going to have SE Lifters installed in a little over a week. That is one of the areas that was not addressed with my recent motor enhancements. I just thought I'd have them replaced since I'm having the SE upgraded cam chain tensioner kit installed. While it's being done, I thought I'd go ahead and have the lifters (tappets are what the tech called 'em) replaced, as it's the OEM ones that are in there. The ones I bought (bought them yesterday) for replacements are SE High Capacity # 18572-13. Should I not be doing this. Total NOVICE here, and I would appreciate any advice here.

Thanks in advance

 

[TorqueInc]

  If you already have a 110 , you could have a compotent builder assemble/build  you a 120 or 124 using the parts you already have.

[bikerboy53]

GstreetSlide,
My wife and I recently put a 120R into our 2010 CVO Ultra. We had to do something after a lifter failed in our stock 110 at 25,000 miles. Shortly after we got ours done, a couple of friends put 124T's from Star Racing in their Ultras. We looked at the S&S website before going with the 120R, but didn't see a 124 that fit our bike, and didn't know about the Star Racing S&S engines at the time.

During our install we put in forged rocker supports, roller rockers, a  T-Man cam, changed to S&S lifters, and used SE tapered adjustable pushrods. As mentioned earlier in this thread we also upgraded the clutch, throttle body, injectors, and also the oil cooler.

Looking back, I think we would have gone with the 124T if we had known about it at the time. For about the same money (maybe less?) we would have started out with a strong crank, S&S lifters, and roller rockers... The Star Racing motors also have a 1 year warranty.

Good luck with whatever you decide to do!