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so the "inner" diameter (ID) of the '78 cb750F stock header outlet is 2 1/8 inch and the "outer" diameter (OD) is 2 1/2 inch .. is this correct .. merc2dogs .. any addiitonal info on the muffler supply store ? thanks ..
I have a used 1978 cb750f muffler. It is dented on the bottom and does not really show on the bike. It is in good solid condition otherwise.Can send pictures if interested.
Hmm...I was thinking "ID" as "inlet diameter" and "OD" as "outlet diameter".It seems like a lot of space to make up between 2-1/8" and 2-1/2". We must be talking about different things.Well here's a pic of what I got. I guess it's technically a 4-2-1. I'm not even sure now what year it's supposed to be from.IndianRider, is it the same as what you got? Because I saw another one on eBay recently. Or is your collector part stacked square instead of flat?
the cherry bomb looks good for the price.. did you have to use the soft gasket amterial or did it fit right in ? would you have a sound file and tell us where you can get it .. i think they sell the cherry bomb automotiove exhausts at pep boys dont they ?
here is the 1978 CB 750 F parts diagram .. looks like the "step" on my collector is part # 13 on the diagram ..i need to visit the muffler shop and find out if they fabricate a midpipe so the headers can accept a mordern sport bike muffler which is slightly upswept .. since ive already repalced the from spoked wheel on my K8 with a comstar for dual disc purposes (hopefully i can find a rear drum comstar), an upswept muffler design might not look that bad ..
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