Boring out 1987 Honda Rebel 250 - Honda Rebel Forum

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Old 09-19-2011, 07:08 PM   #1
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Boring out 1987 Honda Rebel 250

How much would it cost to have a 87 rebel bored out? I hear this increases engine displacement and is ultimately one of the few ways to make a rebel go faster. I realize its a 250 and isn't going to fly, but I'm about to purchase this and am wondering if with mods i could get it to cruise at 75. I only way 145 and wouldn't have saddle bags or a windshield or anything else. This is my first bike so any help would be appreciated. Any other suggestions helpful too. Thanks.
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Old 09-19-2011, 07:13 PM   #2
 
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you should have no problem going 75 in stock form. I'm 225 and can run 70 all day long. for the cost to have it bored out and making it a true 250 I would just buy a bigger bike. JMTC......
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Old 09-19-2011, 07:22 PM   #3
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At 145 the Rebel should move well for you.
There was a poster here that did a bore but it was a costly thing. A lot of custom fabrication.
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Old 09-20-2011, 10:22 AM   #4
 
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I'm 160 and can get my bike up to about 80mph, and thats all she has. By no means is this a fast bike, but the gas mileage is unreal. Have fun with it!
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Old 09-20-2011, 11:08 AM   #5
 
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Quote:
Originally Posted by cmaxw04 View Post
How much would it cost to have a 87 rebel bored out? I hear this increases engine displacement and is ultimately one of the few ways to make a rebel go faster. I realize its a 250 and isn't going to fly, but I'm about to purchase this and am wondering if with mods i could get it to cruise at 75. I only way 145 and wouldn't have saddle bags or a windshield or anything else. This is my first bike so any help would be appreciated. Any other suggestions helpful too. Thanks.
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Old 09-20-2011, 01:53 PM   #6
 
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Is your carburetor clean? Using a fuel filter? I had no problem going 80+ (indicated) at 215lbs. I've got a 14/30T sprocket setup. I'm 200lbs now, and regularly find myself passing people at 80+ mph on accident (I need to keep an eye on that!).

Before boring out, check your carb, check your fuel, make sure your exhaust system is good (rust? holes? exhaust studs still there and working well? bolted on tight?). You can clean your carb yourself, check your exhaust yourself, etc. If there's holes in the exhaust system, you can use muffler tape (get the high temp kind) to fix it if you're not concerned about being pretty. Also, you'd spend less on buying a whole new exhaust system than you would on re-boring.

You should be flying down the expressway if everything else is good.

Check out wrz's bike buying checklist, too, while you're at it.

Have you been on the bike before? Have you ridden before?
An 87 is good because there's a ton of parts out there. Plus there's so many things that you can do with a Rebel.
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Old 09-20-2011, 02:06 PM   #7
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Another observation about the Rebel is that it responds well to exercise. This spring after that long winter we had my Rebel was not performing at its peak. This had me quite dismayed. I knew the carb was clean, the air filter good, new plugs, and all that jazz but when Guba made it up for the my Rebel was not performing as well as it should. After a few more weeks of running and letting the engine rev free, it was back to its old self.
Good vigorous exercise of the bike without abusing it will help it stretch its muscles and run free.
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Old 09-20-2011, 03:28 PM   #8
 
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Typically they'll permit the gopher a deep discount on an overbore job in order to get kits onto themarket. So far nobody has volunteered for the gopher position.

Most likely considering that even with the deep discount, you won't be getting deep gains. Best case scenario is you can get a 50% gain for a full package upgrade (overbore, valve work, porting/polishing, intake and exhaust) and end up matching an LS650 Savage/S-40...but still slower than a 600cc Shadow.

Selling the Rebel and buying an LS650 or 600 Shadow costs less no matter how you slice it.
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Old 09-20-2011, 07:32 PM   #9
 
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Nothing is more irritating than when you ask a question like this one (how much would x cost) and all you get is an endless stream of comments about how you shouldn't or don't need to do it. Just sayin.
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Old 09-20-2011, 07:51 PM   #10
 
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Quote:
Originally Posted by 87Rebel450 View Post
Nothing is more irritating than when you ask a question like this one (how much would x cost) and all you get is an endless stream of comments about how you shouldn't or don't need to do it. Just sayin.
I don't see where any one has said that. Cant really answer it truthfully as there is no big bore kit and the only other person I know to have done this mod had to fabricate everything and spent a lot of money doing it. So if the OP is looking for more power and performance than it would make more sense to just get a bigger bike. Just saying.
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