Anyone running. A120. ?

Ultra boy has a 124 S&S but im not sure of reliability i dont want to get a thousand miles away and be at the mercy of mechanics...lol
 
The 120 sounds great but what is the best way to up the proformance of my 103 on My Harley Flhxxxx. Need alittle extra when in sixth gear running down the road. thanks for any advise!

Though it was a different bike, my 2008 Ultra with 103 had the SE255 cam installed as well. No problems with get up and go in 6th. If you go with this cam make sure you have compression releases too. But as others have said, try the 30t pulley first, much less expensive. I know up here they are having a sale on installed cams for $899. Too much for my blood. If I need the extra ooomph I'll downshift.
 
Seems to be another couple of flies in the ointment
It seems it needs all new exhaust because of size and they prefer 2 into 1 and i have water shields so clearence will be a problem.
also theres just about no way to run without getting a different clutch.
maybe have to go with 60 mm throttle bodys because of cruise.
they are also suggesting a 290 cam
they say the torque will start at about 2k

Don't let the dealer talk you into sh!t you don't need. Your present exhaust with decent slip ons will work, you may not see peak HP but then who cares because Torque is what we're after. The clutch will have to be addressed, I can only take a shot in the dark and guess pretty much any reputable extra plate clutch plate kit and a 480 lb spring from AIM will get it hooked up. If not then you might need something along the lines of a Barnett Scorpion. Throttle body can be the SE 58mm if you have TBW or a 55 mm from Horse Power Inc if you have cables, injectors will have to be 5.3 gps to feed the beast.

The 120R will do a pretty darn good job with the SE 266 cams I comes with, there have been some folks trying the Fueling 594 Reaper cams which have ramps which is easier on the valve train. With the right exhaust the 120R will be a minimum of 100ft/lbs of torque at 2,000 rpm.
 
I was speaking with Steve @ GMR last night and he told me if you want big, pull your stock engine and install the new S&S 124". Its a $5800 crate engine, have the bottom end done and as he put it, "You can have a engine that has the potential to pull close to 140ftlbs of torque and 140hp but you better be hanging on tight!! "

Might be the next size upgrade after I re-do my 117" :laugh:

They always seem to come out with cool crate motors after I built mine, I'd have been all over the S&S 124. I've often thought about what the Star racing 126 would have been like, bet it would bee a hoot.

Dave at JD's has an S&S 145 in a Road King making some nice numbers.
 
The 120 sounds great but what is the best way to up the proformance of my 103 on My Harley Flhxxxx. Need alittle extra when in sixth gear running down the road. thanks for any advise!

As JJTriker said, switching the transmission from the present 32 tooth to a 30 tooth will perk it up, if you haven't read it yet you can get info Click Here. If your looking for more then the next step will be a cam swap.
 
I posted earlier here the price my dealer quoted me to slap in a 120R...That price included everything that needed to be beefed up including the clutch...and all labor. I promise you, if you put in that HD 120, the stock motor will be more than you will ever need for torque and hp..No need to modify it at all. I got to ride a "11 TG just like mine with the 120...It was amazing...made my souped up 103, which is puttin' out 100 hp,,feel kinda sluggish and inadequate. Would love to try it out that 120 in the mountains around here. Oh...and my current exhaust system, V&H power duals,, will fit it just fine,,no need to change out that.
 
Well M3 you were right the exhaust is the same so thars one thousand off the top just a couple. More and its turkey time
 
Well M3 you were right the exhaust is the same so thars one thousand off the top just a couple. More and its turkey time

I love it when a plan comes together:D. What throttle body, injectors and clutch are they proposing on using? They should be using PN 27713-08 throttle body which retails for $449.99 but can be had for $359.95 from Lake Shore HD, PN 27796-08 5.3gps injectors which retail for $139.95 and can be had for $111.95 from Lake Shore HD.

Not sure what air cleaner your running now, the backing plate won't work with the SE 58mm throttle body. SE does have PN 29515-08 which retails for $149.95 and can be had for $119.96 from Lake Shore HD.

In the clutch dept I'm not sure what others have been using on trikes with large CI engines, it would be a roll of the dice using the SE clutch plates or someone like Energy One's extra plate kit with a AIM 480 lb spring on top. I'm getting away with the Energy One extra plate kit and the AIM 480 lb spring and using the Clutch-Wiz to lighten the pull on my 2 wheel 06 Ultra. This winter I'm going to swap out the Energy one plates and try the SE clutch plates, the E 1's seem to have a narrow friction zone which I don't care for.
 
M3 thats the trottle body and Injectors. they havent figured out the clutch yet or my trage in.
the cam is a se290 i believe he said the torque would start pullinr 1800- 2000 rpm which i think is a great place to start and i am also going to go to the 30 tooth pully as well
probaly going to have to put some bars on the back....lol
i am running a big sucker (k&n) they said i will need somesort of adapter for it Mufflers i am running are those megaphones from rivco because i like the way they sounded on the rune. and they also sound pretty good on the harley as well.
 
M3 thats the trottle body and Injectors. they havent figured out the clutch yet or my trage in.
the cam is a se290 i believe he said the torque would start pullinr 1800- 2000 rpm which i think is a great place to start and i am also going to go to the 30 tooth pully as well
probaly going to have to put some bars on the back....lol
i am running a big sucker (k&n) they said i will need somesort of adapter for it Mufflers i am running are those megaphones from rivco because i like the way they sounded on the rune. and they also sound pretty good on the harley as well.

I'm not sure what cam their talking about, SE doesn't have a 290, they have a 260 which has a little less lift and a few few degrees intake close which should bring the torque in a little sooner. It will be interesting to see how it works with this cam, I haven't seen one used yet in this application. You'll be surprised at the exhaust note change when you bump the cubes and compression, it'll be deeper and louder.
 
Been following the posts on this and have to say it sounds like everything is falling into place nicely.
Only thing I will comment on is the 30t pulley. You will be almost there when the clutch pac is removed so so would be perfect time to swap it out. Putting all that torque to the ground will be a lot easier/smoother with the change.
 
Yes Ice you are correct it is the best time to tke care of all that at one time unfortuneatly ...LOL i have more coins to save in my bag first. HAHA
But its always better when you know all this up front and not get the
"oh well I didnt think we would Have to do that" excuse one more thousand.
i thought i was done with boats "BREAK OUT ANOTHER THOUSAND SUCKER"
i thought hd was HUNDRED DOLLAR something is confused here??????
 
Ms3 how about a 266 se a nd he also said something about a 290 so that's all I don't know

The 120R comes with the 266 cams, unless their thinking about the Crane 290. The Crane 290 wouldn't be a good one to use, the intake closing is way to soon and would more than likely result in a ping monster.
 
JJTriker So,.... what's the latest on the 120r in the Trike??

Mike or JJ, would I have to send out the motor to get the flywheels plugged and welded?

Just tryin to get all my ducks and money in a row..
 
JJTriker So,.... what's the latest on the 120r in the Trike??

Mike or JJ, would I have to send out the motor to get the flywheels plugged and welded?

Just tryin to get all my ducks and money in a row..


I haven't seen any real crabbing about the wheels going south on the 120R, there are some out there with 20,000+ miles with no issues. The one guy travels a lot and uses his bike as a dyno mule, he has a 120R and has not done anything to the wheels.
 
Hmmm, thought I put this question up already, but it's not appearing, so I'll ask again.

What does an engine that size do to your gas mileage vs. a 103?
 
Hmmm, thought I put this question up already, but it's not appearing, so I'll ask again.

What does an engine that size do to your gas mileage vs. a 103?

Its about the same if tuned correctly, the 120 in my 06 Ultra will get 41 mpg. Now start using a lot of that extra power the mileage will take a hit.
 
JJ is still on the fence. I want it badly just trying to justify it.
Would like to know what kind of trike they are running this engine on
 
Well i'm off the fence after alot of studing i have decided that the 120 is going to have to stay on the shelf.
My decision was simply the money was more than i wanted and the warrenty was non existent.
so what i decided to do was buy the screaming eagle stage IV kit for 2k
the torque and hp are both over 110, completely factory, and 1/3 the cost.
and a lot easier with warrenty issues.
Nothing like having a 40k trike with no warrenty. so thats why i went with this option.

Screamin' Eagle® Street Performance Stage 4 Kit - 103 Cubic Inches


This Street Performance kit provides the maximum horsepower output for a legal 103 kit that will maintain the factory warranty. This kit includes SE CNC Ported Factory Cylinder heads, 58mm ETC throttle body, SE-259E cams, 10.5 to 1 compression pistons, Perfect-Fit pushrods, SE clutch spring, and all required engine gaskets. This Street Performance kit produces 103 hp and 110 ft-lbs of torque. All EFI-equipped models require ECM calibration* (priced separately). *Recalibration is required for proper installation, and will allow engine to rev to 6200 RPM. See Dealer for details. Labor cost is not included.
 
Well i'm off the fence after alot of studing i have decided that the 120 is going to have to stay on the shelf.
My decision was simply the money was more than i wanted and the warrenty was non existent.
so what i decided to do was buy the screaming eagle stage IV kit for 2k
the torque and hp are both over 110, completely factory, and 1/3 the cost.
and a lot easier with warrenty issues.
Nothing like having a 40k trike with no warrenty. so thats why i went with this option.

I can't blame you, its a pretty big $$ hit. I have around $7,000+ in my complete 120 build in my 06 Ultra, and this was with me doing it myself. By the time you add the incidentals such as clutch, throttle body, bigger oil cooler and labor if your not doing it yourself, your talking a fair amount of cash.

I do have to differ a little bit concerning warranty, your dealer is undoubtedly been a huge help pulling off warrantying a trike kit without it being blasted by the MoCo. The trouble comes in if some big dollar warranty issue comes up and they send out a district rep, most likely your toast depending on what it is. If it is engine, transmission, frame related, their going to deny the claim and flag the power train warranty in their system. The MoCo can be a cruel and evil Step Mother when it comes to warranty and big dollar repairs.
 
The kit says except trikes. What is the deal there.

I'll bet its an emission certification issue, or the MoCo doesn't think it will work well in a Trike which their wrong as usual. Jcolson has the Stage IV kit in his 11 Triglide and he seems happy with the performance.
 
Well.... I pulled the plug on the 120R.

Been readin your post's JJ and Mike. Stopped by the dealer today, Saturday.

The motor is in the Trike, the primary and clutch are done and buttoned up. The exhaust is mounted and done. Throttle body and injectors are on bench and ready to go on next.

Should be done and back home after heat cycle at the end of next week.

Then it will go into the trailer, hauled to a warm ridin place to break in.

I want to get the 1000 miles on it so I can get it dyno tuned before spring.

I have to have heart surgery at the end of Feburary, and want it ready to go when I am.

After a lot of readin and talking, I decided to leave the 120R stock. I think for what I am lookin for, it will be fine.

I was goin to do the swap myself, but the wife said,
" you don't have the temper for that"
I said " you mean patients?", She said "no temper".

Anyhoo.......... can't wait. It won't be a rocket, but it will be fun!!
 

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