Increased Displacement on the 400 - Suzuki Burgman Forum
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Old 10-05-2011, 11:08 PM   #1 (permalink)
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Default Increased Displacement on the 400

The 400 needs to be bumped up to 500cc's-without a significant increase in weight. The extra displacement would give it an extra cushion of power needed for over-the-road cruising--a sense of less straining at higher speeds. The weight to displacement ratio is just to low at only 400cc's. The 650 could then be bumped to 750 to place it in a better position to compete with the new Yamaha 750 superscooter.
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Old 02-18-2013, 05:16 AM   #2 (permalink)
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Default Re: Increased Displacement on the 400

50 cc will do the job just as well and at less cost and why do we always need to chase other manufcturers for capacity when all this means is just more power and cost in money and lives.
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Old 02-18-2013, 09:14 AM   #3 (permalink)
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Default Re: Increased Displacement on the 400

Of the complaints on the 400, engine has never been on my list. Clutch would be first on the list, but I can't complain much about it and windshield height next.
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Old 02-18-2013, 06:45 PM   #4 (permalink)
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Default Re: Increased Displacement on the 400

Yes, the windshield could be improved, decrease its rake and stiffen it up a little. I really like the engine, and loosing 40 or 50 pounds would do the trick for me, the bike I mean.

If they could spruce up the belt cover and ditch the plastic cover it would be good and easier to work on.
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Old 02-20-2013, 09:19 AM   #5 (permalink)
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Default Re: Increased Displacement on the 400

I think the 400 is the right size for me. If I had wanted a larger engine, I would have bought a scooter with a larger engine. Mine pulls me well here in the mountains and it will easily cruise well beyond the fastest speed limits I encounter while getting 60+ MPH. If they would only change the windshield to one as good as the GIVI.
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Old 02-20-2013, 02:55 PM   #6 (permalink)
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Default Re: Increased Displacement on the 400

Quote:
Originally Posted by osbornk
I think the 400 is the right size for me. If I had wanted a larger engine, I would have bought a scooter with a larger engine. Mine pulls me well here in the mountains and it will easily cruise well beyond the fastest speed limits I encounter while getting 60+ MPH. If they would only change the windshield to one as good as the GIVI.
I agree with you on the current size of the 400's engine and already changed to the Givi windshield as I am sure most people have done....
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Old 11-11-2013, 11:46 PM   #7 (permalink)
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I think the existing engine would be fine if they gave it a proper flywheel to carry it through the compression stroke. It could make better torque at a lower rpm for improved hill climbing and fuel mileage. The only downside is that it won't rev as quickly when downshifting during GP racing, but I don't race a Burgman professionally anyway.
A single needs a big flywheel. The Japanese never give their singles enough flywheel.
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Old 11-12-2013, 12:05 AM   #8 (permalink)
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Not going to happen. Once you get above 450ccs on a street engine, you have to go to a twin cylinder; Which means a whole new engine and a whole new bike design. And the payoff for Suzuki would be infringement on their 650 sales; not a smart business move.

As was commented, not many people are complaining about power on the b400 and Suzuki kinda owns the 400 market. Why tamper with that?

A few more ccs, maybe. New transmission, maybe. But a 500, nah. Too much to lose, not enough to gain, and a big investment to do so.
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Old 11-12-2013, 06:24 AM   #9 (permalink)
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DRZ 400 bits could probably be made to fit they give 40 bhp in standard form and up
to 50 bhp in tuned form, I would think just changing the head would do it, but then it
would likely blow the 650 into the weeds and would not be good for 650 sales.
I wont be doing it if I need to go faster I buy another bike, you cant beat cubes as they say,
Maybe a project for someone that likes to do this sort of thing and as good engineering skills.
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Old 11-12-2013, 06:52 AM   #10 (permalink)
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Quote:
Originally Posted by Muse View Post
50 cc will do the job just as well and at less cost and why do we always need to chase other manufacturers for capacity when all this means is just more power and cost in money and lives.
Extra power would not cost lives. Having extra power can get you out of situations, but until you have enough to wheelie or break the rear tire lose I can't see it causing a problem.

Last edited by JohnK; 11-12-2013 at 09:16 AM.
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