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Old 07-02-2014, 09:53 AM   #1
JerryK OP
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650 SV650 motor in KTM frame

I'm installing an SV650 motor in a KTM 950 Adventure frame. The KTM LC8 motor is a dry sump 75 degree twin, and the SV motor is a wet sump ninety degree twin, so the front SV cylinder is a bit more forward than I like. To gain wheel clearance, I'd like to tilt the motor up ten degrees. It's a fuel injected 2008 motor, and the sump pickup will still be covered. Does anyone see a problem with the tilt?

JerryK screwed with this post 07-02-2014 at 06:46 PM
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Old 07-02-2014, 05:42 PM   #2
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Question

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Old 07-02-2014, 06:28 PM   #3
JerryK OP
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Awesome. But I should have been clearer. I want to rotate the front of the motor up ten degrees. The counter shaft will be horizontal with the swingarm bolt, the front cylinder will be raised.
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Old 07-02-2014, 06:36 PM   #4
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Here's my paper mockup, to scale
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Old 07-02-2014, 11:03 PM   #5
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You would think if the sumps covered there shouldn't be any problems, please do a build thread for us.

I have considered a SV 650 in a KTM 450 frame for a snowbike build.
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Old 07-02-2014, 11:33 PM   #6
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I think this is crazy... Crazy AWESOME!!! As long as the sump is covered there really shouldn't be a problem. There shouldn't be any "slosh" issue with the oil going away from the sump. It doesn't seem like that extreme of a remount. Make it happen!!
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Old 07-03-2014, 07:04 AM   #7
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what he said

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Originally Posted by mach1mustang351 View Post
I think this is crazy... Crazy AWESOME!!! As long as the sump is covered there really shouldn't be a problem. There shouldn't be any "slosh" issue with the oil going away from the sump. It doesn't seem like that extreme of a remount. Make it happen!!
I love crazy builds like this, I have a lc4 and a 250sx frame and a spare sv650 motor with the same thoughts .
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Old 07-03-2014, 08:51 AM   #8
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The paper built appears to show the rear exhaust dumping on the swing-arm pivot. Is there enough room to redirect that pipe ?
When the Gladius came out someone built a dirty version that looked the bussiness. The steel trellis ,at least is simpler to modify that the aluminum version.
I'll be watching your build. Full speed ahead !
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Old 07-03-2014, 09:31 AM   #9
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Yes, plenty of room for the exhaust. I will start a build thread in a couple days, and leave a link here. The frame and some bits are arriving today, the motor will be here next week. Thanks for the interest.
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Old 07-04-2014, 04:03 AM   #10
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Is there a benefit to the SV over the LC8?
(Pwr, weight, longevity, fuel consumption?)
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Old 07-04-2014, 08:04 AM   #11
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The LC8 is a fabulous motor, great design, powerful and compact. But it's still big, tall and wide for me since it's 943cc in the 950 form. It makes too-much power for me, a guy who weighs 150 lbs and is 5'-8. I've had a 1090 Ducati Streetfighter, and a Honda RC-51 1000 twin. They're awesome, but a 1000cc is more than I want in an adventure bike I can handle off-road.

My hope with the 650cc SV motor is to save some weight, lower the center of gravity, simplify (no external oil tank), but mostly have something reliable and more manageable. I plan to lower, lighten and minimalize the bike where possible. Wheels will be 17/19.

The KTM 950 series is great for most folks out of the box.
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Old 07-04-2014, 07:50 PM   #12
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The 950motor weighs 58kg 127lbs
The sv650 112lbs

So not a lot of difference you could loose that weight buy changing the exhaust
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Old 07-04-2014, 08:00 PM   #13
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What about oil return. Are you going to get good drain back from the heads?
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Old 07-04-2014, 08:05 PM   #14
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What about oil return. Are you going to get good drain back from the heads?

I can't tell you that, those are the kind of issues I'm inquiring about.
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Old 07-04-2014, 08:13 PM   #15
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Originally Posted by Mudguts View Post
The 950motor weighs 58kg 127lbs
The sv650 112lbs

So not a lot of difference you could loose that weight buy changing the exhaust
Those are the exact motor weights I found, it's good to confirm. You're right, of course. Fifteen pounds is not worth swapping out a motor. Keep in mind I'm starting with an SV650 motor kit, plus a KTM frame, subframe, swingarm, forks and shock. I wouldn't violate a completed KTM. If KTM made a 750 v-twin Adventure, I'd buy that. They may yet, there's space in the lineup.
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