SE 120cube motor
Outstanding HDF Member
Joined: Aug 2009
Posts: 2,938
Likes: 4
From: NC
You cant build that kind of HP for what the 120R costs, considering that you can sell the old engine and get back some coin.
Outstanding HDF Member
Joined: Aug 2009
Posts: 2,938
Likes: 4
From: NC
Agreed. Most people just look at the price of the engine alone and don't realize the added expense of throttlebody, intake, injectors, clutch etc. It can get pricey by the end. I just put one in a bro's bike a coupla months ago. He's lovin it despite the clutch issues we're still working through.
Thread Starter
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Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Sronger cases and different bottom end. 107 is the max the standard cases can cope with.
I have a 100HP 103 motor with 3,000 miles on if anybody wants to buy it.
Club Member
Joined: May 2006
Posts: 14,564
Likes: 9,223
From: the 50s & the 60s
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the stock cases will go way beyond 107.
my 006 88" motor, for example, is now at 121".
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the stock cases will go way beyond 107.
my 006 88" motor, for example, is now at 121".
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Thread Starter
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Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Well we got stuck into it today, me and my son in law.
Tank and seat off first
I set the boy to work on the clutch and inner primary
Starter motor on 06 omwards is way easier to remove
Primary was off in minutes!
Rotor was hard to remove against the magnetic pull but the boy is some form of human tractor :-)
Next we dropped the regulator to reach the front mounting bolts
And undid the 4 gearbox bolts
After first jacking up the gearbox, you need to increase the jack height as you go to keep the gap between box and motor even
And before we knew it the old motor was out and standing on the floor!
We got so carried away by how easy it was that I forgot to take pic of the empty frame:-( and just dropped the new motor in...4 mins from grunt and heave to joy!
Now we are bolting it all up and I will take pics of the parts we have to swap over from the old motor plus the new shiny ones :-)
I'll be back.....
Tank and seat off first
I set the boy to work on the clutch and inner primary
Starter motor on 06 omwards is way easier to remove
Primary was off in minutes!
Rotor was hard to remove against the magnetic pull but the boy is some form of human tractor :-)
Next we dropped the regulator to reach the front mounting bolts
And undid the 4 gearbox bolts
After first jacking up the gearbox, you need to increase the jack height as you go to keep the gap between box and motor even
And before we knew it the old motor was out and standing on the floor!
We got so carried away by how easy it was that I forgot to take pic of the empty frame:-( and just dropped the new motor in...4 mins from grunt and heave to joy!
Now we are bolting it all up and I will take pics of the parts we have to swap over from the old motor plus the new shiny ones :-)
I'll be back.....
Road Master
Joined: Apr 2011
Posts: 772
Likes: 0
From: Corpus Christi, TX
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Road Master
Joined: Oct 2008
Posts: 886
Likes: 6
aside from selling the old engine, I looked at the 120R and what it would take to get it operating efficiently and found it to be about $8+K (me doing all the work) and for $5K I can get similar results with Star Racing doing the work on my current engine. So am opting for that route myself.