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  #1  
Old 30th March 2020
thecarnie thecarnie is offline
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Sportster/Buell Model: XL1200C
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Default My blow through turbo XL1200C

Been working on this thing for about 6 months. Still plenty of work to do, but its streetable now. I barely get on the forums and spend most of my time on facebook, but i just bought a new laptop to program the ignition and I figured I'd share here a little bit too. https://youtu.be/RXS2-naC7ek
Before the turbo project the bike was running Hammer Performance's 100hp package with the screaming eagle CNC heads. I had the heads redone by XLXB to open up the combustion chambers. They installed the shorter and larger twin cam valves, sinking them further into the head and deshrouded them. The process opened them up from 59cc to 72cc bringing the compression down to 9.2:1

IMG_0161 by Alexander Clawson, on Flickr
IMG_0158 by Alexander Clawson, on Flickr
IMG_0110 by Alexander Clawson, on Flickr
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  #2  
Old 31st March 2020
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Sportster/Buell Model: XL1200C
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Welcome !
See ya at Sportster Junkies !
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Thy Sportster Come
It Shall Be Done
On Earth as it is on Salt
2006 Sportster XL1250C
Hammer Sledge Heads 1.98X1.61 Valves
Hammer 600 Cams
Big Ass CP/Hammer Pistons
Mikuni HSR 45 /Hammer Billet Manifold (Now HSR 48)
Jetted 27.5 slow,182.5 Main
97 Needle,Clip posistion 3
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Alto Carbonite Clutch (now with Barnett Pressure plate and 25% stiffer spring)
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Napa 7148 oil filter
Max Power, 111.47
Max Torque, 84.39
Best 1/4 Mile ET to date 11.85
Best 1/4 Speed to date 115.14
Build by Jester Motorwerkz West
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  #3  
Old 31st March 2020
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Impressive!
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  #4  
Old 3rd April 2020
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Suzuki wheels and suspenders?
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2016 883 Superlow
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  #5  
Old 3rd April 2020
thecarnie thecarnie is offline
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Quote:
Originally Posted by GorilladaHun View Post
Suzuki wheels and suspenders?
The wheels brakes and forks came off a 96 Buell Lightning
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  #6  
Old 4th April 2020
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Ah, yeah-shoulda thought about that massive rotor. The wheels are striking reminiscent of late 80's GSX-R units.
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  #7  
Old 4th April 2020
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Sportster/Buell Model: Sportster XLH 883/1207
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Video of this monster running please!!!!
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  #8  
Old 4th April 2020
thecarnie thecarnie is offline
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https://youtu.be/RXS2-naC7ek
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  #9  
Old 5th April 2020
hondo hondo is offline
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Very professionally done!
I'd like to see a video while your riding if one is available.
It looks like your cooling the pressurized air. What are you using as a cooling medium? Do you have an oil pump to evacuate the turbo? What Mikuni are you using? What did you have to do to pressurize the carburetor?
I'm messing around converting my Sportster to run on E85 now with a long term goal to add a blow through turbo. I've done a couple of mock-ups and I've decided the turbo will have to be mounted just about where yours is. My problem with a rubber mount is the turbo has to move with the engine so I've drawn up a plate that bolts to the crankcase where the stock exhaust bracket mounts so the turbo weight is not totally supported by the exhaust pipes.
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Yellow Pearl 05 XL1200R:
Mikuni 42, .551, Doherty AC, Golan 5/16" FV, TC88a, Spark plugs indexed, Air caps on forks, Modified SE mufflers, Rear (red) turn signals are also running/brake lights, LED rear turn signal stalks, Front turn signals moved to lower tree, Laydown license plate, Fork brace, Sundowner seat, Whittlebeast hybrid rear shock mod, Arlen Ness Fairing.
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  #10  
Old 5th April 2020
thecarnie thecarnie is offline
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I’m using 100% water, but at some point I’m going to add some water wetter or other corrosion protection. The oil return for the turbo is a 5/8” heater hose, no pump, just a few inches higher than the return. The carb is an HSR45, I had to change the needle/seat assembly to the smaller size to accommodate a pump fed system. That’s fed by a 1:1 FPR WITH 2.5psi of base pressure. I also had to hook up the vent to receive a boost reference to prevent the bowl from flooding. As far as the support on a rubber mount, you could easily use a flex pipe similar to what most cars use on the manifolds. Just have to completely support the turbo off the frame.
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