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Author Topic: Sketchy turbo hardtail XS  (Read 3317 times)

Offline rusche

  • Posts: 121
Sketchy turbo hardtail XS
« on: Sep 28, 2016, 02:19:08 »
Well I've had this strange thought in my head fora while now. I've been looking at this seat hanging in my garage the last few years and been trying to figure out what to build under it. I found an XS650 from a coworker in total shit shape for $300. So I'm going to attempt to run a BW K03 turbo off a VW 1.8t. We'll see how it goes. I'm thinking blow through with single carb. Maybe VM 36-38? to keep the cost down. I really have no good reason for doing this other than to do something different. So after a year of letting this thing rot on my sideyard, I decided to order a TC bros hardtail kit to get the ball rolling.
Stay tuned for more goose poop welds and general fuckery






Offline rusche

  • Posts: 121
Re: Sketchy turbo hardtail XS
« Reply #1 on: Sep 28, 2016, 13:30:49 »


Shameless picture whoring. This build will be slow. I'm poor.

Offline rusche

  • Posts: 121
Re: Sketchy turbo hardtail XS
« Reply #2 on: Sep 28, 2016, 18:46:12 »
Carefully stacked shit together just to see what it might start to look like. Im not sure if I love the tank


Offline coyote13

  • Posts: 1138
Re: Sketchy turbo hardtail XS
« Reply #3 on: Sep 28, 2016, 18:57:34 »
K03 may not seem like much but that's a lot of turbo for a 650 twin, don't you think?
Half the fun's in the get there...

Offline rusche

  • Posts: 121
Re: Sketchy turbo hardtail XS
« Reply #4 on: Sep 28, 2016, 19:07:37 »
Actually the compressor map seems pretty close, RPM has a larger effect than displacement.
It might not be the most ideal, but its also an extremely affordable option. And easy to come by.

GT15 was my original thought, but its about double the cost.

Offline rusche

  • Posts: 121
Re: Sketchy turbo hardtail XS
« Reply #5 on: Oct 20, 2016, 20:54:44 »
Got a few things welded up. Need spring mounts for the seat. I dont know if I like the tank or not. Playing with mounting location or ditching the whole thing. thoughts?



Got the turbo. Wound up going with the GT15. Its soo tiny. Now shits gonna get weird.


Offline HURCO550

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Re: Sketchy turbo hardtail XS
« Reply #6 on: Oct 20, 2016, 22:43:06 »
Loving this thing! Not sold on the tank myself, but everything else has the makings of a real rad scoot
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline JustinLonghorn

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Re: Sketchy turbo hardtail XS
« Reply #7 on: Oct 21, 2016, 13:49:17 »
Oh, I'm definitely on board.
I'm going to eat your brains and gain your knowledge.

Into The Sunset, CB750 build

TT500 the Animal

Offline rusche

  • Posts: 121
Re: Sketchy turbo hardtail XS
« Reply #8 on: Oct 31, 2016, 00:31:01 »
Yeah Im still not sure if I dig the tank or not. I had it laying around. We'll see if it sticks around
Ordered some exhaust bits yesterday. Finally finally sold this old CB750 I wound up with on trade.
Gonna start building exhaust. Thank goodness for pipe wrap, because its going to be really ugly.

Offline rusche

  • Posts: 121
Re: Sketchy turbo hardtail XS
« Reply #9 on: Nov 01, 2016, 00:05:03 »
Im starting to think bout running dual VM34s. I think dual carbs on the head will be key in keeping the package compact
I know I'll need pressure rated seats for the carbs for a blow through setup. Anybody know where I might find them ?