\', 1979 to 1983 DOHC CB750/900/1000/1100 Honda Custom, \' - \', Honda DOHC Customs, \'
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fritz
This Just In
This Just In



Joined: Apr 15, 2012
Posts: 3
Location: carmel new york

PostPosted: Sat Apr 28, 2012 7:31 pm Reply with quote Back to top

hello 81 cb750c looking for a little more torque perhaps, i weigh 320, will 900 cams do the trick, just the intake? just the exhaust? thoughts?

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better looking at it than looking for it, 1981 cb750c been riding since im 14 20+ different machines 
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genesound
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Joined: Jul 24, 2007
Posts: 45000
Location: Studio City, CA

PostPosted: Sat Apr 28, 2012 7:40 pm Reply with quote Back to top

900 cams will help a little.

keep your gearing low, so you're doing 5 grand on the highway.

you can get different carbs but they aren't cheap.

you can turn it into a larger motor, 900/1000/1100, but that's not too cheap either.

You should really just get a bigger bike in the first place.

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NMT - New Member Thread, click here!!! - Information For New and Veteran Members.
Shows how to enter relevant bike information in your signature, and more
Also some important DOHC wrenching tips, and some other information, shop manuals.

ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
81 CB900C, 83 CB1000C. 
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Buddykitchen
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Joined: Nov 13, 2009
Posts: 1837
Location: Upstate South Carolina

PostPosted: Sat Apr 28, 2012 8:17 pm Reply with quote Back to top

At 320 pounds, you're a little big for a 30-year old 750 that will make somewhere in the 40 lb.-ft. range at best, and even then at fairly high RPM.

None of these 1st generation fours are what you call "torque monsters". Honda has always had a history of making power through high rpm, not through low rpm torque.

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holysmokes
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Joined: Jul 25, 2007
Posts: 37017
Location: ridge road springfield nova scotia

PostPosted: Sun Apr 29, 2012 6:25 am Reply with quote Back to top

320lbs is me with a 110lb passenger

you may want to buy a biger bike

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genesound
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Joined: Jul 24, 2007
Posts: 45000
Location: Studio City, CA

PostPosted: Tue May 01, 2012 7:53 am Reply with quote Back to top

You could get some Keihin CR carbs and 900 cams, upgrade the ignition. It would make quite a difference.

But again, a bigger bike might be preferable.

_________________
NMT - New Member Thread, click here!!! - Information For New and Veteran Members.
Shows how to enter relevant bike information in your signature, and more
Also some important DOHC wrenching tips, and some other information, shop manuals.

ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
81 CB900C, 83 CB1000C. 
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pd750
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Joined: Aug 01, 2007
Posts: 25139
Location: Waldron , Arkansas

PostPosted: Tue May 01, 2012 9:07 am Reply with quote Back to top

My Brother in law is 300+ . He rode a 750 until it broke and then bought an 1100 . He's a lot happier , now . Wink

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1982 CB750C (Sold) Haven\'t found another , yet . 
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