12-17-2018, 07:13 PM
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#1 |
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Join Date: Apr 2018
Posts: 819
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Engines
Was adding up the price of all the mods I'm ordering in a couple weeks, was wondering why we don't just slap Ninja 250 motors in these bikes? They seem to start at about $190 used. Would it work?
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12-17-2018, 07:20 PM
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Join Date: Apr 2018
Posts: 819
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12-17-2018, 10:06 PM
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#3 |
Join Date: Sep 2017
Location: N Texas
Posts: 706
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I had a ninja 250 before the hawk. If I am not mistaken it had about 25 HP. But had to rev it to get the most out of it. I would miss the grunt of the thumper but man it would be a lot faster for sure. Also reving it out to 12K rpm would be fun.
I reckon there is a reason why enduros are for the most part all singles. I would by lying if I said I have not thought about it. But I am not the most mechanical fella in the world. Give it a try and post what you fins! |
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12-17-2018, 10:30 PM
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#4 | |
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Join Date: Apr 2018
Posts: 819
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Quote:
They are listed at 29.6 HP, it may depend on what year though and I guess tuning too. Was just looking at the Ninja engines since they off the top of my head I knew were small bikes and can handle freeway hours. The Rebel motor looks way too big, I have no idea of their dimensions though. There has to be a true 250-300cc engine out there that would work. |
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12-17-2018, 10:34 PM
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Join Date: Apr 2018
Posts: 819
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12-18-2018, 05:27 AM
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#6 |
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Join Date: Oct 2016
Location: Carrollton, GA
Posts: 1,465
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The reason most enduros are single cylinders is because of the torque a thumper can deliver down low. When you're at lower RPM and just trying to crawl up and over a tree root, or get out of a rut, that's where a single is happiest. I started out on a Ninja 250 way, way back when. That bike did the Las Vegas to Phoenix trip a couple of times, and was just fine. Only slightly more CC's than the Hawk, but it ate up highway travel like it was nothing. The reason is partly gearing, but mostly how fast the engine can spin over. A big single has more piston travel to create the same displacement. A small parallel twin only has to move the pistons half as far, and therefore can spin twice as fast. That's a very oversimplified way of stating what's really going on. In the end, stuffing a Ninja engine in a Hawk would be good for someone like me who uses the Hawk almost exclusively on-road and as an around town runabout. For someone who uses the Hawk off-road and running trails, not so much. They would change clutches more than they change oil.
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First Rule of Aviation: -Never Pass Up The Opportunity to Pee I was struggling to get my wife's attention; I sat down on the couch and looked comfortable. That did the trick! My wife says I only have two faults. I don't listen and something else... If at first you don't succeed, try doing it the way I told you to... The Stable: 2005 Yamaha V-Star 650 - SOLD 2015 Suzuki DR 650 2015 RPS Hawk 250 - SOLD 2016 Ural Gear Up |
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12-18-2018, 07:28 AM
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#7 |
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Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,553
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Squeeze a Suzuki Boulevard/Savage S40 Engine in it. Air cooled and no need for radiators.
 https://www.ebay.com/itm/2008-Suzuki-Boulevard-S40-Engine-Motor-only-10k-miles-LS-650-W9/113347438717?fits=Submodel%3AS40%7CMake%3ASuzuki&h ash=item1a6408a87d:g:Vv0AAOSwFYZb3MMp:rk:3f:1&frce ctupt=true
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2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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12-18-2018, 10:04 AM
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#8 | |
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Join Date: Apr 2018
Posts: 819
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Quote:
 A 400 pound 650cc motor should totally fit right ha! |
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12-18-2018, 10:49 AM
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#9 | |
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Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,553
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Quote:
 Get ur done!
__________________
2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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12-18-2018, 11:51 AM
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#10 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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I picked up an old ('70's) XL350 engine with these thoughts in mind. It might not be worth rebuilding, but it'll be good for mock-up. I'd like to stay at 400cc or under, to keep the insurance cost down in my area. The engines that have crossed my mind (in no particular order) are XR400, DR400, XT350, XR/XL350, KZ400, XS400 and CB400. I had a CB400, but that parallel twin was so wide I sold it. I suspect the KZ400 and XS400 would be similar, so they're off the list for me.
Can anyone think of other 350/400 singles that aren't prohibitively expensive?
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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12-18-2018, 12:41 PM
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#11 |
Join Date: May 2013
Location: finger lakes NY
Posts: 2,044
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about the only thing that has ke[pt me from doing so is the radiators.... plenty of room for the motor, but the rads make it a pain.... i have considered trying to find a dr600 motor or something similar to shoehorn in, but havent found one cheap yet....LOL
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12-18-2018, 12:50 PM
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#12 | |
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Join Date: Oct 2016
Location: Carrollton, GA
Posts: 1,465
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Quote:
__________________
First Rule of Aviation: -Never Pass Up The Opportunity to Pee I was struggling to get my wife's attention; I sat down on the couch and looked comfortable. That did the trick! My wife says I only have two faults. I don't listen and something else... If at first you don't succeed, try doing it the way I told you to... The Stable: 2005 Yamaha V-Star 650 - SOLD 2015 Suzuki DR 650 2015 RPS Hawk 250 - SOLD 2016 Ural Gear Up |
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12-18-2018, 12:53 PM
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#13 |
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Join Date: Apr 2018
Posts: 819
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CM400T Honda might fit
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12-18-2018, 12:53 PM
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Join Date: May 2013
Location: finger lakes NY
Posts: 2,044
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Quote:
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12-18-2018, 12:57 PM
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#15 |
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Join Date: Apr 2018
Posts: 819
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Cm400
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Linear Mode
