Author Topic: College Project: 1975 CB750  (Read 1099 times)

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Offline Lone Star Rider

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College Project: 1975 CB750
« on: April 16, 2020, 11:13:55 PM »
Just joined the club! Glad to be here.

I picked up this CB750 for FREE! My uncle was renting out a house he owns, when the tenants stopped paying rent. He kicked them out and they left a ton of junk. Lucky for me, this bike was a part of that pile my uncle was going to throw away!!! (I'll cross the title and registration bridge when I get there). Engine turns when I kick it, electrical doesn't look too bad, it ran 3 years ago and it doesn't have too much rust damage (it was under a car port). Here's how I found it:   



Me and my roommates after loading it up in the truck:



A shot of the left and right, as well as the back. The bike had been in the driveway when the tenant's "nemesis" light their car on fire! It melted the lights so I'll be going aftermarket on those.







Here's my workshop! Front porch about 11'x5'



I've done a few minor things that'll be in the next post, but I'm working on the carburetor right now. 

« Last Edit: April 17, 2020, 10:27:43 AM by Lone Star Rider »
'79 CJ7 Renegade
'70 Jeepster Commando
'72 Jeep Commando...
And now the '75 CB750!

Offline mrbreeze

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Re: College Project: 1975 CB750
« Reply #1 on: April 17, 2020, 07:19:33 AM »
Other than fiddling with it to get it running I wouldn't invest much in it till I got a title. It would be a shame to have to give it back after sinking cash into it. If it's all legit and the owner abandoned it...lucky you!!
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Fool me once..shame on you. Fool me twice..I'm kickin' your a$$......

Offline Stev-o

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Re: College Project: 1975 CB750
« Reply #2 on: April 17, 2020, 08:42:48 AM »
Welcome from Lake Travis.  These bikes need a good battery to run, so put that on your list. 

Great college project, where are you at?
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Lone Star Rider

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Re: College Project: 1975 CB750
« Reply #3 on: April 17, 2020, 10:25:59 AM »
Other than fiddling with it to get it running I wouldn't invest much in it till I got a title. It would be a shame to have to give it back after sinking cash into it. If it's all legit and the owner abandoned it...lucky you!!

My uncle was able to claim it as his property because the tenants had stopped paying rent. I'll keep looking into it though, so thanks for the heads up!

Welcome from Lake Travis.  These bikes need a good battery to run, so put that on your list. 

Great college project, where are you at?

College Station! Gig 'Em Aggies!
'79 CJ7 Renegade
'70 Jeepster Commando
'72 Jeep Commando...
And now the '75 CB750!

Offline Stev-o

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Re: College Project: 1975 CB750
« Reply #4 on: April 17, 2020, 01:10:42 PM »
Other than fiddling with it to get it running I wouldn't invest much in it till I got a title. It would be a shame to have to give it back after sinking cash into it. If it's all legit and the owner abandoned it...lucky you!!

My uncle was able to claim it as his property because the tenants had stopped paying rent. I'll keep looking into it though, so thanks for the heads up!

Welcome from Lake Travis.  These bikes need a good battery to run, so put that on your list. 

Great college project, where are you at?

College Station! Gig 'Em Aggies!

Hook 'em Horns!    Hope we will be able to Hook or Gig come August...
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Lone Star Rider

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Re: College Project: 1975 CB750
« Reply #5 on: April 17, 2020, 02:01:57 PM »
Benefit of all online classes: more time to work on the bike! Had to take off the exhaust headers, but I got it up on a jack so I can pivot around on the porch.





Pulled the carburetors and stripped them all the way down. Definitely a ton of gunk in there!



Put all the pieces (careful to save all gaskets that didn't come in the replacement jets/gasket kit) into some carb cleaner. I've rebuilt a few Edelbrock and Holley carbs before. Anything I should look out for?





As always, I'm just a college kid who's new to bikes, so I'll take any advice, tips or tricks!
« Last Edit: April 17, 2020, 02:04:48 PM by Lone Star Rider »
'79 CJ7 Renegade
'70 Jeepster Commando
'72 Jeep Commando...
And now the '75 CB750!

Offline Stev-o

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  • Posts: 34,320
  • Central Texas
Re: College Project: 1975 CB750
« Reply #6 on: April 17, 2020, 02:28:26 PM »
If you can do a Holley, this will be a piece of cake! 

Most important thing is dont use the aftermarket [cheap china] carb kits.  Confirm the jets you have are genuine Keihin...
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........