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Author Topic: Is this a autentic Yoshimura exhaust?????  (Read 2280 times)

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Offline CB500FourTurbo

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Is this a autentic Yoshimura exhaust?????
« on: April 02, 2015, 01:24:14 PM »
Hello all,

I am looking at this Yoshimura exhaust that a older gentleman is selling, but I don't know to much about it to know if its a real Yoshimura or not? The gentleman says its real hand bent Yoshimura that he had bought in the mid 70's and was on his 75 CB750! He also used to race this bike and build them as well. He looks like he is a legit person but I rather be safe and sorry and pay way too much for it if its not real.
 I took pic of a photo of his cb750 that had the exhaust on it. I hope some of the old timers can help since I wasn't alive in the 70's to know if it is legit, I tried researching but I can seem to find the old school Yoshi just the reissue?

Thank you guys for the help!!
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Offline SOHC4 Cafe Racer Fan

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #1 on: April 02, 2015, 01:51:11 PM »
The pipe might be legit, but I don't think they used riveted badges back in the 70's.  That badge looks modern.  That's not to say that someone didn't rivet a new badge onto an old pipe.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Trad

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #2 on: April 02, 2015, 01:58:49 PM »
It looks welded on the #3 pipe. That's odd.
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74 CB550 Build: NOS-GUTTED-OEMplus-HOLDTRUE
http://forums.sohc4.net/index.php/topic,130575.0.html

Offline 754

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #3 on: April 02, 2015, 02:01:46 PM »
The pics you put up are of a members bike from here.
I believe they're the real deal...
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Offline SOHC4 Cafe Racer Fan

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #4 on: April 02, 2015, 02:11:26 PM »
Frank,

Did Yosh rivet their badges back in the early 70s or do you think the owner put a modern badge on a vintage exhaust?
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline SOHC4 Cafe Racer Fan

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #5 on: April 02, 2015, 02:12:11 PM »
PS - This thread should be somewhere else, like SOHC bikes or high performance.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline SOHC4 Cafe Racer Fan

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #6 on: April 02, 2015, 02:53:09 PM »
I am not a moderator for this Project forum, but since you are a new member, I thought you should know this topic might be better suited for one of the other forums.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Retro Rocket

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #7 on: April 02, 2015, 05:36:30 PM »
That pipe  has been repaired at some stage, the head pipes were never welded like that by Pops Yoshimura, I have seen how these pipes are made and they were never welded like that at all. The price should be adjusted acordingly. I'm not too sure about the badge but personally, I have only ever seen those badges on production style Yoshi pipes of that era, not the hand bent race pipes, I actually have 2 of those old style badges... ;) This pipe will not fit a 500 if thats what you had planned...? Did you know that you can buy new pipes with the hand bent head pipes from Japan quite cheap..? 

http://www.yamiya750.com/index.php?main_page=product_info&cPath=246_251_142_88&products_id=671

http://www.yamiya750.com/index.php?main_page=product_info&cPath=246_251_142_88&products_id=670
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Offline Stev-o

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #8 on: April 02, 2015, 07:11:39 PM »
That's a good pipe, buy it if it's priced right.

Mick - didn't we see another similar pipe recently that was repaired as well?
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Offline koendd

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #9 on: April 03, 2015, 12:53:59 AM »
Quote from: Stev-o on April 02, 2015, 07:11:39 PM
That's a good pipe, buy it if it's priced right.

Mick - didn't we see another similar pipe recently that was repaired as well?

it's the exact same one :)
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Offline Retro Rocket

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #10 on: April 03, 2015, 12:55:40 AM »
Quote from: Stev-o on April 02, 2015, 07:11:39 PM
That's a good pipe, buy it if it's priced right.

Mick - didn't we see another similar pipe recently that was repaired as well?

Same pipe I think Steve... ;)
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750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline jaguar

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Re: Is this a autentic Yoshimura exhaust?????
« Reply #11 on: April 03, 2015, 07:46:50 AM »
That is a member's pipe, and old bike.
Have seen both in person.
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