Author Topic: 1975 cb750F Muffler Number?  (Read 1008 times)

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Offline BenelliSEI

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1975 cb750F Muffler Number?
« on: December 20, 2019, 06:32:02 AM »
Is the muffler the same on ‘75 and ‘76 cb750F? Can anyone tell me the number stamped on the muffler? Thanks! John D.

Offline halllzy

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Re: 1975 cb750F Muffler Number?
« Reply #1 on: December 20, 2019, 06:35:03 AM »
Pictured is 1975, not sure about 76’ but I believe the mount is different. 


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Offline halllzy

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Re: 1975 cb750F Muffler Number?
« Reply #2 on: December 20, 2019, 06:41:31 AM »
From Hondaman this pas fall:

That's a tough one, Hallzy: since the F0 (and F1) is 35+ lbs heavy on the right side, many of them that have survived have a sizeable flat spot right about where the picture above shows the muffler, bike having fallen over that way in someone's garage - very common. :(

I have a complete F1 header and pipe if, in the end, he finds no other options. The hangar bracket is in a slightly different position, would need an extra bracket bolted to the existing one to hold the F1 version up.



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Offline seanbarney41

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Re: 1975 cb750F Muffler Number?
« Reply #3 on: December 20, 2019, 06:57:50 AM »
I think Hondaman mis-spoke there.  75 f0 and 76 f1 should have same exhaust, mount and all.  77-78 f2 has a different mount, muffler, and headers.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1975 cb750F Muffler Number?
« Reply #4 on: December 20, 2019, 10:21:20 AM »
+1 The mount is NOT different.

75F and 76F are identical except for paint colors. This statement does not include a few changes they made during the model years as updates such as the rear master cylinder made in the middle of the 75 model run, etc
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline BenelliSEI

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Re: 1975 cb750F Muffler Number?
« Reply #5 on: December 20, 2019, 11:39:57 AM »
Thanks guys...., halllzy I can’t quite read the number?

Offline seanbarney41

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Re: 1975 cb750F Muffler Number?
« Reply #6 on: December 20, 2019, 12:08:36 PM »
hm392
If it works good, it looks good...

Offline BenelliSEI

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Re: 1975 cb750F Muffler Number?
« Reply #7 on: December 20, 2019, 01:31:18 PM »
Sean...... thanks! Now, where will I ever find one!

Offline seanbarney41

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Re: 1975 cb750F Muffler Number?
« Reply #8 on: December 20, 2019, 01:56:46 PM »
I have had a couple useable originals in the last couple years, really were only good enough for a rider quality level bike or someone going for an original unrestored.  But really, if you plan on riding your bike, there is no reason to spend hours searching and/or big dollars.  The original muffler is soooo big and ugly and heavy and absolutely silent.  Headers are also extremely heavy, making for such an improvement with any decent aftermarket 4 into 1.  And I am not talkin about 8 pounds and a few ounces....Hondaman was not exagerating when he mentioned 30 pounds!  And I don't really think the market is there yet for the f models, to require a 100 point restoration.  A mint F is still gonna sell for thousands less than a k1 or earlier.
If it works good, it looks good...

Offline BenelliSEI

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Re: 1975 cb750F Muffler Number?
« Reply #9 on: December 20, 2019, 03:59:39 PM »
Sean...... all good points, I bought a nice header, so just be on the look out. There is one on EBay this evening, already over $300!

Offline jamesw

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Re: 1975 cb750F Muffler Number?
« Reply #10 on: December 21, 2019, 11:47:22 AM »
I have a 393 from a hondamatic that's identical if you're interested.

Or here's a 392 on ebay that ends in 9 hours.

https://www.ebay.com/itm/1976-Honda-CB750F-Super-Sport-Exhaust-Silencer-Muffler/324013206266?hash=item4b70b12afa:g:SbgAAOSwzNFd7Iqc
« Last Edit: December 21, 2019, 11:50:54 AM by jamesw »
72K-F 750 Cafe
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Offline halllzy

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Re: 1975 cb750F Muffler Number?
« Reply #11 on: December 26, 2019, 10:44:04 PM »
I have had a couple useable originals in the last couple years, really were only good enough for a rider quality level bike or someone going for an original unrestored.  But really, if you plan on riding your bike, there is no reason to spend hours searching and/or big dollars.  The original muffler is soooo big and ugly and heavy and absolutely silent.  Headers are also extremely heavy, making for such an improvement with any decent aftermarket 4 into 1.  And I am not talkin about 8 pounds and a few ounces....Hondaman was not exagerating when he mentioned 30 pounds!  And I don't really think the market is there yet for the f models, to require a 100 point restoration.  A mint F is still gonna sell for thousands less than a k1 or earlier.
+1 if you’re going to be riding a lot!
-1 if you want to sneak up on people at 4000rpm


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Offline BenelliSEI

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Re: 1975 cb750F Muffler Number?
« Reply #12 on: December 27, 2019, 06:13:37 AM »
Thanks all. I have a rally good aftermarket system on my cb750F. Super light and sounds great, but the rest of the bike is very Stock, so just looking to find the right bits.

Happy New Year next!

Offline MRieck

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Re: 1975 cb750F Muffler Number?
« Reply #13 on: December 27, 2019, 06:37:05 AM »
+1 The mount is NOT different.

75F and 76F are identical except for paint colors. This statement does not include a few changes they made during the model years as updates such as the rear master cylinder made in the middle of the 75 model run, etc
Speedo and tach faces are a different color on the F0 and F1 Jerry.  :o ;) ;D ;D Sorry....I couldn't resist brother. ;D
Owner of the "Million Dollar CB"

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1975 cb750F Muffler Number?
« Reply #14 on: December 27, 2019, 11:06:26 AM »
+1 The mount is NOT different.

75F and 76F are identical except for paint colors. This statement does not include a few changes they made during the model years as updates such as the rear master cylinder made in the middle of the 75 model run, etc
Speedo and tach faces are a different color on the F0 and F1 Jerry.  :o ;) ;D ;D Sorry....I couldn't resist brother. ;D

LOL Got me Michael  ;D
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1975 cb750F Muffler Number?
« Reply #15 on: December 27, 2019, 11:09:21 AM »
Thanks all. I have a rally good aftermarket system on my cb750F. Super light and sounds great, but the rest of the bike is very Stock, so just looking to find the right bits.

Happy New Year next!

I gave up. I knew I would NOT find a NOS exhaust and wasn't going to settle for another used one. Nice Kerker, from when they were reasonably priced, on one and a Delkevic on the other.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)