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Author Topic: Honda SL100/SL125 Engine Swap, Restomod  (Read 3304 times)

Offline cbinvb

  • Posts: 16
Honda SL100/SL125 Engine Swap, Restomod
« on: Oct 03, 2016, 13:31:13 »
SL125 frame



The SL100/125s are pretty cool imo
330mm shock, 700mm front forks, 16 inch rims
CB160 swingarm to get a little more length over stock



Not crazy about the mags
Found these 3.00x14 spoke rims on aliexpress




I went with 120/80-14s front and rear
The front end is from some pit bike







An ebay'd xr200 motor can drop into this for a 220lb bike; need something capable for stints on the highway

Here it is in the middle of tear down and inspection, for new top end, beefier clutch plates/springs, and modern oil pump
glad I did, because whoever had this motor before me didn't know how to tighten the cam chain so it chewed into the cylinder
and washed the whole thing in metal shavings.
And oil spinners work really well.



And oil spinners work really well.



-1.5" on the seat



since it was originally drum brake, I will sort something for the rear disc conversion





Por-15 on an old seat pan



Thanks
« Last Edit: Jun 18, 2017, 02:05:04 by cbinvb »

Offline alemonkey

  • Posts: 58
Re: Mean Green SL100 Mini Bomber
« Reply #1 on: Oct 03, 2016, 21:06:37 »
Very cool little project.  My first "bike" was a little 50cc Honda.  My dad still has it out at the farm and my nephews ride it.

Offline ridesolo

  • Posts: 1074
  • "Illegitimi non carborundum"
Re: Mean Green SL100 Mini Bomber
« Reply #2 on: Oct 03, 2016, 21:53:01 »
Wow, I'm liking this one!
“Fight on and fly on to the last drop of blood and the last drop of fuel, to the last beat of the heart.”
— Baron Manfred von Richthofen

Please check out:  http://www.VetTix.org

These are on a low simmer out in the shop:
'75 Honda CL360: http://www.dotheton.com/forum/index.php?topic=56547.0
'70 Rupp Roadster: http://www.dotheton.com/forum/index.php?topic=67459.0

Offline cbinvb

  • Posts: 16
Re: Mean Green SL100 Mini Bomber
« Reply #3 on: Oct 05, 2016, 22:36:40 »
I got a few more bits to move ahead with 

motor is starting to come together.  Finally got the machine work done and back.  High comp piston, new cam and new valves







little battery to keep the lights on.

« Last Edit: Feb 06, 2017, 19:41:31 by cbinvb »

Offline cbinvb

  • Posts: 16
Re: Mean Green SL100 Mini Bomber
« Reply #4 on: Oct 23, 2016, 04:03:20 »
- reamed the axle tube to accept a 14mm axle, which is what this cb175 swinger needs to work with my frame
- found some shocks
- finished the motor and fitting/bracketing
- tryin out the exhast






I think I like the low straight the best.



« Last Edit: May 10, 2017, 23:21:10 by cbinvb »

Offline cbinvb

  • Posts: 16
Re: Mean Green SL100 Mini Bomber
« Reply #5 on: Dec 05, 2016, 18:41:05 »
I have made a little bit of progress on this build. 

Have all the wheel spacers made and the front and rear brake hangers fabbed as I am going with Brembo 84mm crabs instead of the KTM calipers I originally had.  This means I had to switch out for larger brake rotors becuase the crabs hit the spokes on the wheel with the smaller rotor diameter. 

Time for paint







« Last Edit: May 10, 2017, 23:23:58 by cbinvb »

Offline Luugo86

  • Posts: 642
  • '73 CB350, '78 XS650 Cafe Killer
    • ToadStool Cycle Co.
Re: Mean Green SL100 Mini Bomber
« Reply #6 on: Dec 05, 2016, 18:57:15 »
 Looks good man. I was wondering who did your cylinder head/cylinder work ? I am building an SL175 at the moment and need the head redone and the jugs honed
Live to Die, Die to Live

Online Maritime

  • DTT SUPPORTER
  • *
  • Posts: 8742
Re: Mean Green SL100 Mini Bomber
« Reply #7 on: Dec 05, 2016, 19:41:15 »
Holy shit, I like this little beast.  Good job so far!
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline cbinvb

  • Posts: 16
Re: Mean Green SL100 Mini Bomber
« Reply #8 on: Dec 05, 2016, 19:54:24 »
Looks good man. I was wondering who did your cylinder head/cylinder work ? I am building an SL175 at the moment and need the head redone and the jugs honed

So there's a little place in North Baltimore that did my work.  https://goo.gl/maps/z9RXWstnaAA2

Otherwise you could call up Powroll and Jerry will let you know what's what. https://goo.gl/maps/UMEyts9cQao

Holy shit, I like this little beast.  Good job so far!

Thanks, its real slow going during the semester but winter break is coming up in Jan so I try to finish it then.
« Last Edit: Feb 06, 2017, 19:47:03 by cbinvb »

Offline cxman

  • DTT SUPPORTER
  • *
  • Posts: 2337
Re: Mean Green SL100 Mini Bomber
« Reply #9 on: Dec 05, 2016, 20:01:08 »
i have not been able to get a answer at powroll for a few weeks or a call back i have been trying to get some stuff from them

has any one actually talked to them if so how do i get them?
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others