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Old 02-04-2011, 05:00 PM   #16
garrett the nerd
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In. This should be interesting. :-)
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Old 02-04-2011, 05:06 PM   #17
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Quote:
Originally Posted by snowhawk jockey View Post
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
Yes. We think alike. Stealth is an objective. This whole project got delayed a year while California debated mandatory motorcycle emissions testing. The bill was finally killed so the turbo is go, but I want to keep as low key as possible.

Here is the position I settled on
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Old 02-04-2011, 05:17 PM   #18
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Honestly, a lot of hand ringing went into settling on this position. The Chinese turbo does not have real specifications on how much it can be tilted. I put the compressor end down as much as I dared. Too much and oil could leak into the compressor. On the other hand there's a good possibility that long wheelies will have oil leaking into the turbine and smoking.

That's a big risk for me. What good is a turbo bike you can't wheelie!

Anyway, this was a big step. Now that its located the plumbing work can begin.
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Old 02-04-2011, 06:07 PM   #19
smokeeater495
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If you rotated the turbo 90 degrees would that decrease the chance of oil getting into the compressor?
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Old 02-04-2011, 06:57 PM   #20
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Quote:
Originally Posted by smokeeater495 View Post
If you rotated the turbo 90 degrees would that decrease the chance of oil getting into the compressor?
Yes, that's the usual orientation for a turbobike. It won't work for squeezing a muffler into the KTM's muffler space though.

My fallback plan is to use an electric scavenge pump. Lots of turbo Busas and GSXRs use electric pumps to move oil back up to the cranckcase from low mounted turbos. I REALLY want to avoid this. Simple and light is the objective here
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Old 02-05-2011, 08:29 AM   #21
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OK. Change of plans already. To build the header I wanted all the end points fixed in space first. This temporary bracket was not holding the turbo securely enough. Sooo, Im going to build the muffler first. The reason why is this muffler will double as the turbo mount. It will pick up the standard KTM muffler mount at the back.


Heres a posterboard pattern. Im getting bold with styling here and going after somingthing like the ZARD mufflers.

.
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Old 02-05-2011, 08:36 AM   #22
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Turning posterboard into metal. Its just mild steel. I have no desire to use fancy alloys because this bike will get ridden. It may even get dropped someday and mild steel is easier to fix.

.
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Old 02-05-2011, 08:39 AM   #23
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.
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Old 02-05-2011, 08:43 AM   #24
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Its a funky KTM angular style. Hopefully I won't regret this.

.
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Old 02-05-2011, 08:58 AM   #25
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Its still extra big. Trimming will come later. Objectives included quiet and stealth so I might leave it kind of big.

.
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Old 02-05-2011, 09:02 AM   #26
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Muffler/turbo hanger

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Old 02-05-2011, 10:05 AM   #27
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Anybody know the secret to uploading more than one pic at a time?

Here is the muffler's interface with the turbo. Sorry about the focus.

.
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Old 02-05-2011, 10:19 AM   #28
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The plan is for studs from the muffler to go through the turbo exhaust housing. Unfortunately the housing has blind holes so I need to cut away some of the housing.

,
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Old 02-05-2011, 10:21 AM   #29
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,
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Old 02-05-2011, 10:50 AM   #30
cpallen
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Quote:
Originally Posted by Tommy_J View Post
Anybody know the secret to uploading more than one pic at a time?

(snipped)
.
If you put your pictures up on a hosting site like FLICKR.COM you can use the insert Image tool (looks like mountains)



With flickr, you click on the picture and select the size (the above is 640 medium). Here's their FAQ about it: http://www.flickr.com/help/photos/#2265887



Don't know what the limit is, if any. I hope this helps your cool project.
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