950 Supermoto Turbo Build Thread

Tommy_J · 02-02-2011, 07:25 PM

Hey All. I decided to go nuts and turbo my 950 Supermoto. Some folks, even as far away as France, have asked for info on the build so here we go. This is the virgin prior to defiling.

Tommy_J · 02-02-2011, 08:09 PM

Step one : Decide on objectives

I have in mind a low boost installation. Say under 6 psi. A couple of things are really important to me. One is that boost start early and enhance the already excellent midrange. Peak power does not need to be huge but if the turbo machinery can be sized for 150 hp with good midrange so much the better.

The bike should be quiet. This is important to me as I like to travel with the front tire ½ inch off the ground whenever possible and being quiet make it possible more. Turbos make nice mufflers but additional muffling will be needed for the level of stealth I’m after.

To make things interesting I’m shooting for a net weight reduction and significantly improved off road ability

andyhol · 02-02-2011, 08:37 PM

standard 950 supermoto not enough?
increase off-road ability and add a turbo?

too awesome and really fucking crazy

, good luck

Tommy_J · 02-02-2011, 09:33 PM

Step Two : Select Turbo

Looks like a clone of a Borg Warner K03 will do fine. This trim should be good for 180 HP at a pressure ratio of 1.63, or 9.26 psi boost. Not that I’ll ever run it that hard. Peak boost is achieved at 4200 RPM.

There’s a lot of talk about how great ball bearing turbos are but I have no desire to spend $700. Final decision was for a Chinese journal bearing turbocharger. K03 turbos are used on untold thousands of VW Golfs and Beetles and there are a lot of these Chinese clones running around as replacements. I goggled around to see if anyone had bad experiences with them and came up empty. Sure, the quality is more spotty than the real thing but this sucker only cost $190. If it goes bad I’ll replace it for less than a change of tires.

Here's the efficiency map

duxrneet · 02-02-2011, 11:16 PM

Subscribed

OaklandStrom · 02-02-2011, 11:23 PM

Holy crap.

Subscribed!

Tommy_J · 02-03-2011, 05:28 PM

Step Three : Mounting Arrangement

The usual approach is to put the turbo in front of the motor, down low. A novel thing I want to try is to package the turbo where the right muffler was. This gives cleaner routing for the exhaust. Its all flowing backward. The air cleaner position makes more sense up high. Oil can probably drain from the turbo by gravity without need for an expensive and fragile scavenge pump.

Tommy_J · 02-03-2011, 05:39 PM

I wish I could post more than one pic at a time.

Here’s another view with a temporary bracket and bailing wire holding the turbo. I’m trying to get it positioned in tight and keep the turbo within 18 degrees of level. That’s so oil won’t leak past the compressor seal and make embarrassing smoke.

SimpleSimon · 02-03-2011, 07:33 PM

Subscribed!

1200B · 02-03-2011, 07:45 PM

awork13 · 02-03-2011, 07:48 PM

Are you making a pressure box for the carbs?

anonny · 02-03-2011, 08:27 PM

Good thinking! I'm in.

Tommy_J · 02-03-2011, 10:11 PM

Quote:

Originally Posted by awork13

Are you making a pressure box for the carbs?

That's the plan

snowhawk jockey · 02-04-2011, 01:37 PM

Saw your comment on the 990SM Turbo thread and had to join here.
I wondered when the convenience of the SM exhaust header outlet would be exploited with a whistle. The routing for pressure to plenum could all be contained within the bodywork, under the seat, with room left on the other side to pipe the exhaust outlet through a short can. Stealthy indeed.
Plus, with a rear mount, there's no messing with the oilbag or its plumbing.
Nice use of a Chirbo, too. My kind of budget.

along for the ride

cnw126 · 02-04-2011, 03:58 PM

Seriously interested in this! I wish you the best of luck.

02-02-2011, 07:25 PM	#1
Tommy_J ^OP won't drive a car Joined: Apr 2007 Location: So Cal Oddometer: 336	950 Supermoto Turbo Build Thread Hey All. I decided to go nuts and turbo my 950 Supermoto. Some folks, even as far away as France, have asked for info on the build so here we go. This is the virgin prior to defiling. Attached Images __________________ Current Stable : 950SM Turbo! GSXR1000 RT-P1100 VFR800 RXC620 motard EXC520 CR500AF CRF450R Plated! CR250 Past stable : 90 +

02-02-2011, 08:09 PM	#2
Tommy_J ^OP won't drive a car Joined: Apr 2007 Location: So Cal Oddometer: 336	Step one : Decide on objectives I have in mind a low boost installation. Say under 6 psi. A couple of things are really important to me. One is that boost start early and enhance the already excellent midrange. Peak power does not need to be huge but if the turbo machinery can be sized for 150 hp with good midrange so much the better. The bike should be quiet. This is important to me as I like to travel with the front tire ½ inch off the ground whenever possible and being quiet make it possible more. Turbos make nice mufflers but additional muffling will be needed for the level of stealth I’m after. To make things interesting I’m shooting for a net weight reduction and significantly improved off road ability __________________ Current Stable : 950SM Turbo! GSXR1000 RT-P1100 VFR800 RXC620 motard EXC520 CR500AF CRF450R Plated! CR250 Past stable : 90 +

02-02-2011, 08:37 PM	#3
andyhol volcano rider Joined: Dec 2008 Location: the Seven Seas Oddometer: 147	standard 950 supermoto not enough? increase off-road ability and add a turbo? too awesome and really fucking crazy, good luck __________________ current rides: tiger 200 and cb200 scrambler in indo 90 yamaha xtz750 super tenere, 98 honda vtr 1000 firestorm in the uk

02-02-2011, 09:33 PM	#4
Tommy_J ^OP won't drive a car Joined: Apr 2007 Location: So Cal Oddometer: 336	Step Two : Select Turbo Looks like a clone of a Borg Warner K03 will do fine. This trim should be good for 180 HP at a pressure ratio of 1.63, or 9.26 psi boost. Not that I’ll ever run it that hard. Peak boost is achieved at 4200 RPM. There’s a lot of talk about how great ball bearing turbos are but I have no desire to spend $700. Final decision was for a Chinese journal bearing turbocharger. K03 turbos are used on untold thousands of VW Golfs and Beetles and there are a lot of these Chinese clones running around as replacements. I goggled around to see if anyone had bad experiences with them and came up empty. Sure, the quality is more spotty than the real thing but this sucker only cost $190. If it goes bad I’ll replace it for less than a change of tires. Here's the efficiency map Attached Images __________________ Current Stable : 950SM Turbo! GSXR1000 RT-P1100 VFR800 RXC620 motard EXC520 CR500AF CRF450R Plated! CR250 Past stable : 90 + Tommy_J screwed with this post 02-03-2011 at 05:18 PM

02-02-2011, 11:16 PM	#5
duxrneet Studly Adventurer Joined: Jul 2009 Location: Melbourne, AUS Oddometer: 592	Subscribed __________________ "Pay no attention to that man behind the curtain!" Current: 1987 CBR600, 1995 XR600R - Past: 1993 DR350 (Dirt Model)

02-02-2011, 11:23 PM	#6
OaklandStrom Beastly Adventurer Joined: Sep 2005 Location: East Bay Oddometer: 1,491	Holy crap. Subscribed!

02-03-2011, 05:28 PM	#7
Tommy_J ^OP won't drive a car Joined: Apr 2007 Location: So Cal Oddometer: 336	Step Three : Mounting Arrangement The usual approach is to put the turbo in front of the motor, down low. A novel thing I want to try is to package the turbo where the right muffler was. This gives cleaner routing for the exhaust. Its all flowing backward. The air cleaner position makes more sense up high. Oil can probably drain from the turbo by gravity without need for an expensive and fragile scavenge pump. Attached Images __________________ Current Stable : 950SM Turbo! GSXR1000 RT-P1100 VFR800 RXC620 motard EXC520 CR500AF CRF450R Plated! CR250 Past stable : 90 +

02-03-2011, 05:39 PM	#8
Tommy_J ^OP won't drive a car Joined: Apr 2007 Location: So Cal Oddometer: 336	I wish I could post more than one pic at a time. Here’s another view with a temporary bracket and bailing wire holding the turbo. I’m trying to get it positioned in tight and keep the turbo within 18 degrees of level. That’s so oil won’t leak past the compressor seal and make embarrassing smoke. Attached Images __________________ Current Stable : 950SM Turbo! GSXR1000 RT-P1100 VFR800 RXC620 motard EXC520 CR500AF CRF450R Plated! CR250 Past stable : 90 + Tommy_J screwed with this post 03-06-2011 at 12:57 PM

02-03-2011, 07:33 PM	#9
SimpleSimon Aspiring advrider Joined: Feb 2007 Location: Lake Stevens, WA Oddometer: 3,345	Subscribed! __________________ 5f? Is that like riding down a 90 degree cliff face into a lake of fire? I thought 4f was bad. Abdelhub "Assembled Spectator Scoring With Incriminating Photographic Evidence" or A.S.S.W.I.P.E. - Granparacer

02-03-2011, 07:45 PM	#10
1200B Ride everywhere... Joined: Jul 2007 Location: New Hampshire Oddometer: 282	__________________ Photo Site: http://JustinStG.com

02-03-2011, 07:48 PM	#11
awork13 Gas was made to burn Joined: Oct 2009 Location: Tacoma WA Oddometer: 299	Are you making a pressure box for the carbs? __________________ 2012 Honda CB1000R

02-03-2011, 08:27 PM	#12
anonny What could go wrong? Joined: Mar 2007 Location: Beautiful Revelstoke BC Oddometer: 4,957	Good thinking! I'm in. __________________ Kawasaki H1 build thread 71- 450 Honda CL re & re Just another pathetic sheep following the herd

02-04-2011, 01:37 PM	#14
snowhawk jockey Slack Jaw Gaper Joined: Jul 2005 Location: The other Center of the Universe: Bend, Oregon Oddometer: 744	Saw your comment on the 990SM Turbo thread and had to join here. I wondered when the convenience of the SM exhaust header outlet would be exploited with a whistle. The routing for pressure to plenum could all be contained within the bodywork, under the seat, with room left on the other side to pipe the exhaust outlet through a short can. Stealthy indeed. Plus, with a rear mount, there's no messing with the oilbag or its plumbing. Nice use of a Chirbo, too. My kind of budget. along for the ride __________________ KTM 950 SliderMoto with 19/17 spokes, FCR41's, 2-into-1 high pipe, single side front brake and handcut flattrack style tires. Gettin Slideways is good! justin@giantloopmoto.com www.giantloopmoto.com

02-04-2011, 03:58 PM	#15
cnw126 Gnarly Adventurer Joined: May 2009 Location: Newark, DE USA Oddometer: 103	Seriously interested in this! I wish you the best of luck.

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