Author Topic: seanbarney41's 1975 CB750F!  (Read 10837 times)

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Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #50 on: November 19, 2017, 06:34:40 AM »
Will do Eric...still just struggling with the carbs on that one.
If it works good, it looks good...

Offline Stev-o

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Re: seanbarney41's 1975 CB750F!
« Reply #51 on: November 19, 2017, 10:16:52 AM »

slabside Suzuki lingering in the shop...


Ok, I'll admit I am curious to see this...
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #52 on: November 19, 2017, 11:43:56 AM »
how's about a preview then...

After a couple magazine articles, I knew I wanted one, but did not really think there was much chance of finding anything viable.  Then one day sitting at a bike show, someone decided to cruise in on this...
DSCN0758 by Sean Barney, on Flickr
That really got my heart racing. 

Then M. Rieck posted one for sale here, but it had been re-painted and the engine was dis-assembled, and it was in Boston of course.  So then my buddy found mine on craigslist about 2 hours away...here it is soon after picking it upDSCN1212 by Sean Barney, on Flickr2
If it works good, it looks good...

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #53 on: November 19, 2017, 11:48:40 AM »
hopefully gonna find basic mechanical solidity...the real challenge is finding plastics.  What little is available is very expensive.  There's always AirTech to bail me out.
If it works good, it looks good...

Offline Terry in Australia

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Re: seanbarney41's 1975 CB750F!
« Reply #54 on: November 19, 2017, 12:44:57 PM »
That 1200 Bandit of yours should be able to keep up with a "Slabbie" as we call them here, Eric? ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline ekpent

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Re: seanbarney41's 1975 CB750F!
« Reply #55 on: November 20, 2017, 04:47:02 AM »
That 1200 Bandit of yours should be able to keep up with a "Slabbie" as we call them here, Eric? ;D
When Sean is on his SOHC 750's Terry I can get him good in the straights on the Bandie but when it comes to the corners I turn into a timid old man while the young buck is draggin' his knee.  ;D

Offline SOHC4 Cafe Racer Fan

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Re: seanbarney41's 1975 CB750F!
« Reply #56 on: November 20, 2017, 08:48:00 AM »
Nice slabside project!
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 seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #57 on: February 27, 2020, 09:46:27 PM »
Well, this has not been updated in a while.  It has been getting ridden ...lots.  as a result, it was in need of some maintenance.  So, I have been doing a bit of work on it this winter.

Sometime in the last year, i added a tarrozi fork brace.  I must have gotten the installation wrong, pulling the forks into a bind and a fork seal leak to match.  I fixed the bind right away, but the leak remained.
« Last Edit: February 27, 2020, 09:49:15 PM by seanbarney41 »
If it works good, it looks good...

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #58 on: February 27, 2020, 10:19:00 PM »
So, once the season was over,  and some other projects got stalled, I got to work...turns out one leg got gouged quite badly.  I sanded the gouge out as best I could and put it back together.  We will see how it seals.  Might have to find a new set of forks, as the inside of the sliders is probably worn beyond use.  I replaced the piston rings, but that is all you can do with these.
If it works good, it looks good...

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #59 on: February 27, 2020, 11:00:42 PM »
Next up was a little carb work.  This bike had always had a really sluggish throttle action.  Throttle snapped closed just fine, but had a heavy pull and it was high time to remedy.  Turned out to be  some worn out throttle cables, so they were replaced.  I thought back to how I had never been through these carbs, I had just tuned em up with jets, and the other usual adjustments.   They were filthy on the outside, so I decided to give em a proper clean.
If it works good, it looks good...

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #60 on: February 27, 2020, 11:20:07 PM »
So with new found throttle quickness , it was time for some bling!  The kerker emblem had been missing from the muffler for a couple years now.  I had want ads on   up all over the net for the early, small emblem.  Finally, a member here came up with a whole nos muffler for a great price.  So this bike loses its bellowing trombone sound for the tight and iconic kerker race baffle sound.
If it works good, it looks good...

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #61 on: February 27, 2020, 11:21:10 PM »
This bike is once again ready for action, just need some nice spring weather here in michigan
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Offline JoeCooley

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Re: seanbarney41's 1975 CB750F!
« Reply #62 on: February 28, 2020, 01:23:54 AM »
The bike looking very nice. Good work!
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #63 on: February 28, 2020, 05:56:32 AM »
Thanks joe
If it works good, it looks good...

Offline BenelliSEI

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Re: seanbarney41's 1975 CB750F!
« Reply #64 on: February 28, 2020, 07:34:01 AM »
Sean....... bike looks great! Now we wait. We have had 20-24” of snow in the past 48 hrs. Seems like Spring is a ways off!

Offline SOHC4 Cafe Racer Fan

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Re: seanbarney41's 1975 CB750F!
« Reply #65 on: February 28, 2020, 07:59:13 AM »
Great bike, Sean.

Great weather here in California year-round!
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 seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #66 on: February 28, 2020, 08:27:35 AM »
Thanks guys.   Growing up, I always felt that the yin and yang of the seasons here in michigan added some depth to life.  Now, I just really don't need the yang anymore. 

This winter has been relatively mild.  Really, just enough cold and snow to keep the streets salty and the bikes in doors.
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Offline BenelliSEI

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Re: seanbarney41's 1975 CB750F!
« Reply #67 on: February 28, 2020, 10:49:07 AM »
Sean...... Ontario is getting clobbered! We had three days of skiing planned, in Collingwood. My buddy, whose a 65 year old snow border (and really good at it), called and said not to come. Just too much snow, roads are impossible! Here’s the view from my front door. There is another step that’s disappeared. +2’ everywhere and more where it’s drifting. Even more snow forecast for today and tonight. My old FORD with a plow is getting beaten up! Too much YANG!
« Last Edit: February 28, 2020, 10:53:13 AM by BenelliSEI »

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #68 on: February 28, 2020, 11:39:35 AM »
yeah Benelli...I don't know how you folks do it up there
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Offline BenelliSEI

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Re: seanbarney41's 1975 CB750F!
« Reply #69 on: February 28, 2020, 12:10:12 PM »
That’s my shop at the bottom of the hill....... not going to get there today!

Offline Terry in Australia

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Re: seanbarney41's 1975 CB750F!
« Reply #70 on: February 28, 2020, 05:26:03 PM »
Beautiful work Sean, and beautiful pics of that white stuff. Glad we don't have it here though, looks great on Christmas cards and in movies like "Groundhog Day", but I couldn't live with that sh1t stopping me from riding my bikes whenever I want to. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Stev-o

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Re: seanbarney41's 1975 CB750F!
« Reply #71 on: February 29, 2020, 06:49:45 AM »
Looks good Sean.  Nothing like clean carbs, in & out!  Good to hear you found a nice Kerker.

No Yang here, was riding the Z1 yesterday....

'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline hondaron

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Re: seanbarney41's 1975 CB750F!
« Reply #72 on: February 29, 2020, 07:19:51 AM »
Bike looks great, thanks for posting pics 😀

I couldn't handle the snow, we were in Big Bend riding last weekend, for a great time 😀
« Last Edit: February 29, 2020, 07:58:01 AM by hondaron »

Offline PeWe

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Re: seanbarney41's 1975 CB750F!
« Reply #73 on: February 29, 2020, 08:31:22 AM »
Your bike looks fine!
Something new to test at next ride.
That's the good thing with these bikes, test ride a modification makes the ride fun and very interesting.
« Last Edit: February 29, 2020, 09:45:17 AM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline seanbarney41

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Re: seanbarney41's 1975 CB750F!
« Reply #74 on: February 29, 2020, 08:47:54 AM »
Yeah PeWe, that baffle in the new kerker might want a little less main jet.  Hoping for rain, to wash away the road salt so I can test on it!

I appreciate the compliments guys.
If it works good, it looks good...