10-24-2016, 12:43 PM | #16 |
450 Engine
This is the best new 450 6-speed engine I've found new. Almost $1000. Wouldn't be a straight bolt in, I don't think. But it would be 3x the horse power. Which might be a bit scary on the Hawk. You would probably need to get new brakes, disks and sprockets at the least to be able to handle it.
http://cqskill.en.alibaba.com/produc...dirt_bike.html Last edited by LesterJames; 10-24-2016 at 12:44 PM. Reason: Update |
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10-24-2016, 12:53 PM | #17 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
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10-24-2016, 02:13 PM | #18 |
Join Date: Jan 2015
Location: arkansas
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How about over the front wheel and around the head light with flexible hoses going back to the frame? That would be one heck of a motor to stick in a craigs listing that had a road title.
there are a lot of older street bikes that motor would fit too. |
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10-24-2016, 02:46 PM | #19 |
Oh ya! And you'd need a radiator. ha. Those are pretty cheep though. Would it fit on the sides of the front part of the frame? Maybe you'd have to loose the side plastics.
Last edited by LesterJames; 10-24-2016 at 04:33 PM. |
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10-24-2016, 03:59 PM | #20 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
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Well, the frame geometry was not designed to have that much static weight up high. I don't know how much water those things need, but remember "A pint's a pound the world around" plus the radiator.
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10-25-2016, 12:40 AM | #21 |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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I thought you were thinking of an old 400 air cooled, around $500 online but mabey cheaper junk yard deal at $250 - me dos centavos.
Ahh those junk yard finds...you never know
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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10-25-2016, 08:42 AM | #22 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
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I quite agree. A 350-400cc air cooled is much more practical. The Suzuki 350 DR engine would be great, if it is small enough. Over-head cams, though, tend to make the engine too tall. I see no one has shown any love for the BSA B-40, a 350cc push rod air cooled unit construction job. It is a short stroke engine, so should be easier to fit in. Would have to have the wiring re-configured though.
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10-25-2016, 08:49 AM | #23 | |
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A used 350 from like a 90's dirt bike would probably be ideal. I was just trying to see how much it would be to get a new motor on it. Looks like it would be almost as much as the bike. So, yes. Used is the way to go. |
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10-25-2016, 10:29 AM | #24 |
Join Date: Feb 2016
Location: George West, Texas
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This is why I said , "if the deal is there", otherwise will quickly break the bank and exceed the value.
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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10-25-2016, 11:24 AM | #25 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
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I spotted an '88 Honda Hawk 400 motor on CL yesterday for $100.00. The motor has been in storage since then. It would take some fab work for the mounts and the exhaust, but a 400 twin would be lots of fun.
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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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10-25-2016, 11:54 AM | #26 |
Join Date: Jun 2010
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Maybe I'm getting old, I'm afraid it may be too much fun...some of those old twins put out some power!
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10-25-2016, 05:57 PM | #27 |
Join Date: May 2016
Posts: 237
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I dont think the Hawk has the backbone to handle much more torque.
Normally i would be one to jump at a bigger engine, but this bike already has a noticeable torque twist to it. I suspect the swing arm bushings are the source of the flex. Ive done it plenty of times and have had motor mounts rip out of the frame tubes on better made units. I have no idea what is in the steel but welding it is like a firework show with mig, and with tig it dont want to form an alloy with my filler rods. its a challenge to weld, makes me appreciate the crappy looking welds on the bike. seems they did really well considering what they were working with. nothing is impossible but there is a point where it becomes less value then the effort taken. |
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10-25-2016, 06:25 PM | #28 | |
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10-25-2016, 06:31 PM | #29 | |
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10-26-2016, 12:11 AM | #30 |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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I welded up the dorsal frame seam to make room for valve cover removal with a flux core point and shoot welder upside down. Can you blow it out , yes. Is the tube thin, yes. Can you weld it, absolutely, low and slow
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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