Author Topic: 47 years on a '75 CB750F  (Read 27461 times)

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Offline ofreen

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47 years on a '75 CB750F
« on: July 04, 2007, 12:45:58 AM »
I bought my '75 750 30 years ago today, on the 4th of July, 1977.  Sort of boggles my mind to think of it.  It rolled over 107,000 miles last week and is still going strong.  Except for 6 years in storage while I lived in the bush in Alaska, it has been in continuous service.  The farthest I've had to get into the engine was to replace the seals under the cam towers a few years ago.  I've had a lot of other bikes during that time (I had 10 streetbikes at one time), so that has kept the mileage total down a little, but it is my daily driver as I use it to get to work.  No way would I have imagined in the summer of 1977 that I'd still be riding it 30 years later. 

I know there are others here that have had their bikes as long, or longer.  Remarkable machines.
« Last Edit: July 05, 2024, 12:01:44 AM by ofreen »
Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

crogger

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Re: 30 years on a '75 CB750F
« Reply #1 on: July 04, 2007, 02:38:27 AM »
are you still on the original cam chain?

Offline Bob Wessner

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Re: 30 years on a '75 CB750F
« Reply #2 on: July 04, 2007, 02:47:47 AM »
A remarkable testament to their durability. And happy birthday to your bike. ;D
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Offline LoopsAndLogic

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Re: 30 years on a '75 CB750F
« Reply #3 on: July 04, 2007, 08:06:18 AM »
All I can say is WOW :o :o :o

 I knew a guy who had 127K on his 1984 Interceptor VF750, with 2 sets of cams and 1 cam chain later!

I don't think a 400F can go that long :( :(

 That just makes me want a 750 even more :D :D

LL
My rides:
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Offline ofreen

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Re: 30 years on a '75 CB750F
« Reply #4 on: July 04, 2007, 08:24:19 AM »
are you still on the original cam chain?

Yes.  The engine is still all original.

A remarkable testament to their durability. And happy birthday to your bike. ;D

The old bike thanks you, Bob.  I knew of a couple of 750s back in the old days when they were still 'current' that went over 150,000 miles without a rebuild.


 I knew a guy who had 127K on his 1984 Interceptor VF750, with 2 sets of cams and 1 cam chain later!


The valve train was a weak spot on those bikes all right.  The rest of the engine is pretty stout, though.
« Last Edit: July 04, 2007, 08:28:35 AM by ofreen »
Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

Offline medic09

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Re: 30 years on a '75 CB750F
« Reply #5 on: July 04, 2007, 09:52:29 AM »
Your bike is an inspiration.  I just showed this thread to my bike (awaiting a new exhaust).  Now it knows I mean it when I say I plan on us going at least 100K together.  Not many bikes, new or old, out there that one can rely on that way.
Mordechai

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Offline Gordon

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Re: 30 years on a '75 CB750F
« Reply #6 on: July 04, 2007, 10:08:34 AM »
My K1 was already 33 years old when it came to me, but I absolutely plan on still owning and riding it 30 years from now.  I just hope it will still be legal and affordable to run a gas powered motorcycle on public roads in 2037! :-\

Motomama

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Re: 30 years on a '75 CB750F
« Reply #7 on: July 04, 2007, 10:36:47 AM »
Wow!  I have the same bike - new to me about 2 years ago. I hope it will take me through the next 30 as well!! 

Offline Sam Green Racing

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Re: 30 years on a '75 CB750F
« Reply #8 on: July 04, 2007, 11:18:42 AM »
That's fantastic milage Greg without a lot of work, happy birthday to your bike and a happy 4th July to everyone.

What was you doing for 6 years in the bush Greg ?

Sam. ;)
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Offline ofreen

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Re: 30 years on a '75 CB750F
« Reply #9 on: July 04, 2007, 01:27:42 PM »
That's fantastic milage Greg without a lot of work, happy birthday to your bike and a happy 4th July to everyone.

What was you doing for 6 years in the bush Greg ?

Sam. ;)

Howdy, Sam.  I was working for the Federal Aviation Administration.
Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

Offline Sam Green Racing

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Re: 30 years on a '75 CB750F
« Reply #10 on: July 04, 2007, 01:50:25 PM »
I thought you might have been playing at being Grizzly Adams ;D ;D ;D

Sam. ;)
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 30 years on a '75 CB750F
« Reply #11 on: July 04, 2007, 02:56:15 PM »
30 years, 107K and counting! Congrats. I bought mine 3/75 but don't have nearly the mileage you do. I'll bet I've abused mine a lot more than you have. Dropped a valve in 3/76 and have been tinkering ever since. Finally starting to get good at it after 30 years. I plan on having mine buried with me. I expect to celebrate it's 50th BDay too. You and I know why we still have these bikes!!
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline ofreen

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Re: 30 years on a '75 CB750F
« Reply #12 on: July 04, 2007, 04:14:53 PM »
I thought you might have been playing at being Grizzly Adams ;D ;D ;D

Sam. ;)

 ;D My attitude toward the bears was I'd leave them alone if they'd let me alone.  It always worked out that way, but I still had some interesting experiences with them.


30 years, 107K and counting! Congrats. I bought mine 3/75 but don't have nearly the mileage you do. I'll bet I've abused mine a lot more than you have. Dropped a valve in 3/76 and have been tinkering ever since. Finally starting to get good at it after 30 years. I plan on having mine buried with me. I expect to celebrate it's 50th BDay too. You and I know why we still have these bikes!!

You were one of the guys I was thinking of when I mentioned those who had their bike as long or longer.  I intend to keep mine, too.  It's got to to wear out someday, so I'll rebuild it.  I know I should start stockpiling parts that I know are getting hard to come by, but it always starts when I hit the button.  I probably take it for granted too much.
Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

Offline paulages

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Re: 30 years on a '75 CB750F
« Reply #13 on: July 04, 2007, 04:18:03 PM »
Quote
What was you doing for 6 years in the bush Greg ?

Sam. Wink


working on the HAARP project?  ;D ;D ::)
paul
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1976 CB550 (590cc) road racer
1973 CB750K3
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Offline ofreen

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Re: 30 years on a '75 CB750F
« Reply #14 on: July 04, 2007, 04:27:14 PM »
Quote
What was you doing for 6 years in the bush Greg ?

Sam. Wink
working on the HAARP project?  ;D ;D ::)

I had to look that one up.  Very interesting.
Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

Offline Sam Green Racing

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Re: 30 years on a '75 CB750F
« Reply #15 on: July 04, 2007, 04:34:04 PM »
Me to  ::) ::) ::)
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Offline Peterbylt

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Re: 30 years on a '75 CB750F
« Reply #16 on: July 04, 2007, 05:27:39 PM »
I've had my 75 550f since 1980. It is also mostly original, I have never cracked open the case and the engine still starts and runs like a clock. It has about 37,000 miles. I've had many other bikes in the interim but none as good and certianly nothing as dependable. 

Peter
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Offline 75750SS

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Re: 30 years on a '75 CB750F
« Reply #17 on: July 04, 2007, 06:15:39 PM »
I've just gotta ask Ofren, what kind of oil you been using and how often do you change it?

Offline ofreen

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Re: 30 years on a '75 CB750F
« Reply #18 on: July 04, 2007, 07:36:38 PM »
I've just gotta ask Ofren, what kind of oil you been using and how often do you change it?

This has been a little controversial.  I use BMW labeled 20-50 in the summer, and if it is winter when I change, I'll use 10-40.  I understand BMW oil is made by Spectro, and the one I use is not a synthetic.  I use it because that's what they sell at my favorite motorcycle shop, Big Twin Cycles in Boise, the price is more or less reasonable, and it is good oil.  I change it every 3000 miles, and the filter every other oil change.  That's what I've been doing the last 10 or 11 years.  Before that I used Honda oils, Castrol GTX, Belray, and back at the beginning, car oil.

Others have differing opinions about this, and it won't hurt the bike to change more often.  The bike doesn't use enough oil between changes to need topping off, so I think the interval I use is OK, and the results speak for themselves.
Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

Offline paulages

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Re: 30 years on a '75 CB750F
« Reply #19 on: July 04, 2007, 10:15:15 PM »
Quote
What was you doing for 6 years in the bush Greg ?

Sam. Wink
working on the HAARP project?  ;D ;D ::)

I had to look that one up.  Very interesting.

i thought maybe you'd been studying how to use HAARP to make your bike go faster... ;D ;D ;D
paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
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Offline ofreen

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Re: Was 30 years on a '75 CB750F, now it is 35
« Reply #20 on: July 04, 2012, 07:42:21 PM »
I bought my '75 750 30 years ago today, on the 4th of July, 1977.  Sort of boggles my mind to think of it. 

Well now it has been 35 years and my mind is still a little boggled how fast time goes by.  I remember starting this thread 5 years ago (seems like last week), searched for it and here it is.  The bike continues on, hauling my butt back and forth to work 10 months out of the year.  Temperatures in the teens or in the one hundred and teens, it is all the same to it.  In the last year it has completed 3 lengthy legs of the 2011 and 2012 SOHC4 relays, and is ready to start another one tomorrow to deliver Lefty to tlbranth in eastern Washington.

I looked at and rode two '75 CB750Fs back on 7/4/77.  I had sold my '64 DuoGlide I had bought from my dad.  The HD was a nice bike, but constantly needed work and I just got tired of always having to dink with it.  I had been considering buying a new '77F but decided to see what was on the used market.  There were two in the classified ads, one out in Burien, WA and the other a few miles down the road from me in south King County.  A call to the closer one resulted in no answer, but the guy in Burien was home, so off I went.  When I got there, I discovered he kept the bike in his living room as he had no garage.  He had made a ramp he laid over his steps to get the bike off the porch. The bike was spotless, with 3500 miles, and the orange color.  It looked like new except for a dent on the points cover where he had dropped it at a stop.  I helped him get it off the porch to the driveway.  It had been a couple of years since I'd had the opportunity to ride a 750, and after the Duo-Glide it seemed amazingly smooth and responsive.  The bike was perfect.  The owner was asking $1450 and didn't want to accept less. 

The asking price in the ad for the other one was $1400 and I knew it had some extras, so I decided to wait until I could see the other one.  I thanked him and went to find a phone booth to try calling the other owner.  This time he answered, so I went to see it.  This one was blue with a Vetter fairing.  It wasn't as clean as the orange one, but it was in fine shape.  It turned out the guy I met was selling the bike for his sister.  It had belonged to her husband who unfortunately had recently died in an accident in his Corvette.  Well, kind of a bummer, but I took the bike for a ride.  About 2 or 3 miles down the road the bike quit just like the key had been turned off.  No juice anywhere.  I suspected a blown fuse but had no idea where the fuse box was and was disinclined to start taking apart someone else's bike.  I didn't want to leave it so I started pushing it back - uphill.  There were no houses around.  It was in the 80's and humid.  I had to push the damn thing about a 1/2 a mile back to a fire station. 

I went in and saw 4 guys sitting at a table playing cards.  I told them about the test ride gone bad and asked to use their phone.  One of them who maybe thought he was the boss said the phone wasn't for public use.  I was already kind of pissed about having to push a bike that didn't belong to me on a hot day, so that didn't sit with me very well.  I think I mentioned I was worried the owner might think I had made off with his bike.  One of the other guys said let him use the phone fer chrissakes.  Anyway, I got the owner on the phone, and he told me oh yeah, there is a small electrical problem.  Just reach between the fairing and the instruments and wiggle the gob of wires around until the lights come back on.  I did that, the power came back on, and I took it back.  I was just a little bit unhappy.  The guy asked me if I'd make an offer, and I said I wasn't interested.  He persisted and I realized I could have gotten him to come down on the $1400 asking price under the circumstances but all I could think about was getting to a phone booth to call the first guy and tell him I wanted the orange bike.  The first guy had mentioned he had gotten other calls that day, and I was worried the bike would be sold. 

But to my relief he still had it and the rest is history.  Jeez, 35 years ago.
Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

Offline scottly

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Re: 30 years on a '75 CB750F
« Reply #21 on: July 04, 2012, 08:59:42 PM »
I spent the night of July 4 1979, in Montrose, CO. I was on my first long-distance motorcycle ride, on my Seeley that I bought a couple of months before. I had torn it completely apart and reassembled it, correcting as many of the OP's mistakes as I could, and was spinning wrenches up to 1 hour before we departed SLO on the morning of 7-1..
Don't fix it if it ain't broke!
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Offline Really?

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30 years on a '75 CB750F
« Reply #22 on: July 04, 2012, 09:03:50 PM »
Time for some pics. I read you were nominated for BOTM.
I don't have a motorcycle, sold it ('85 Yamaha Venture Royale).  Haven't had a CB750 for over 40 years.

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Offline scottly

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Re: 30 years on a '75 CB750F
« Reply #23 on: July 04, 2012, 09:29:35 PM »
Save the pics for the voting thread, Greg. ;) ;)
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Offline scunny

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Re: 30 years on a '75 CB750F
« Reply #24 on: July 04, 2012, 10:14:17 PM »
good story and congrats on long/ rides and ownership. 
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