Author Topic: 1971 Honda cb450 Twin.  (Read 1808 times)

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Offline BenelliSEI

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1971 Honda cb450 Twin.
« on: October 18, 2020, 01:07:55 PM »
Working on a friend’s cb450. Nice bike! She’s a small lady and just loves it!

Offline BenelliSEI

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Re: 1971 Honda cb450 Twin.
« Reply #1 on: October 20, 2020, 11:39:19 AM »
Finished up the cb450 today. Took it for a short run. What a sweet ride with an amazing amount of torque and acceleration! In 1970, this was a “big” bike. My wife rode it up and down our road and called it”cute”.......

Offline Prospect

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Re: 1971 Honda cb450 Twin.
« Reply #2 on: October 20, 2020, 11:57:52 AM »
Were you able to identify any interchangeable parts that ended up going onto a cb750k0 in early production?  Caliper, ignition etc.
Current Bikes

1969 CB750  Sandcast #256
1971 CB750K1
1972 CB750K1
1975 CB400F
1975 GL1000 Goldwing
1954 Harley Davidson Panhead
1957 Harley Davidson Panhead

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Offline BenelliSEI

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Re: 1971 Honda cb450 Twin.
« Reply #3 on: October 20, 2020, 01:32:00 PM »
Front wheel, caliper, font fender ( single cut at the back) and caliper brackets all looked the same. Not much else...... delightful, smaller design. Really tightly packaged, but all extremely accessible. No vacuum ports for sync’ing the carbs, so I used my old “Unisyn”. It fouled the choke butterfly when open, but used a slice of old radiator hose to extend the carb throat. Sweet bike.

Offline HondaMan

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Re: 1971 Honda cb450 Twin.
« Reply #4 on: January 06, 2021, 07:10:35 PM »
Yeah, it was hard to disregard that bike. I didn't: had a CL version first and a CB version later. Both were a joy to ride! At hiway speeds they could get a little tiresome, though, with the vibes in the handlebars. But I'm talking 8-hour days, here... ;)
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

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Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
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Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

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Offline Stev-o

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Re: 1971 Honda cb450 Twin.
« Reply #5 on: January 12, 2021, 04:11:55 PM »
I see her 450 and raise you mine!



Apparently, the Honda 450 was faster then the British 650's back in the day.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline BenelliSEI

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Re: 1971 Honda cb450 Twin.
« Reply #6 on: January 12, 2021, 05:31:08 PM »
Steve-0. Yours will be nicer! Nice and complete. Great score.

Offline ekpent

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Re: 1971 Honda cb450 Twin.
« Reply #7 on: January 13, 2021, 06:25:57 AM »
 Rear turn signals and mounts are the same also for anybody needing some for a K0 or K1 750. I like the blue color.

Offline BenelliSEI

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Re: 1971 Honda cb450 Twin.
« Reply #8 on: January 14, 2021, 04:53:52 PM »
It was painted by a local body shop. Turned out well and it does look good.

Offline HondaMan

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Re: 1971 Honda cb450 Twin.
« Reply #9 on: January 15, 2021, 06:00:04 PM »
I see her 450 and raise you mine!



Apparently, the Honda 450 was faster then the British 650's back in the day.


Steve: Is yours the 4-speed? Those are really rare...
We used to call the early ones the "Bone Shaker Twin". They could cut a license plate in half in a single day's tour.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Stev-o

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Re: 1971 Honda cb450 Twin.
« Reply #10 on: January 15, 2021, 06:18:16 PM »
I see her 450 and raise you mine!



Apparently, the Honda 450 was faster then the British 650's back in the day.


Steve: Is yours the 4-speed? Those are really rare...
We used to call the early ones the "Bone Shaker Twin". They could cut a license plate in half in a single day's tour.

Hey Mark...yes, it's a '67 K0 w/4 speed.  Nearly all original, picked it up from a buddy that has a couple of them. Went for a ride earlier today, it is a "vibrater" but runs great!
Only original once, I wont be restoring it.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline HondaMan

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Re: 1971 Honda cb450 Twin.
« Reply #11 on: February 01, 2021, 06:50:13 PM »
I see her 450 and raise you mine!



Apparently, the Honda 450 was faster then the British 650's back in the day.


Steve: Is yours the 4-speed? Those are really rare...
We used to call the early ones the "Bone Shaker Twin". They could cut a license plate in half in a single day's tour.

Hey Mark...yes, it's a '67 K0 w/4 speed.  Nearly all original, picked it up from a buddy that has a couple of them. Went for a ride earlier today, it is a "vibrater" but runs great!
Only original once, I wont be restoring it.

I rode one of those once, and I marvelled that Honda went to the trouble of adding the 5th gear to them. It was a perfectly-married gear-to-torque ratio package at all engine speeds I tried, to 100 MPH.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Bodi

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Re: 1971 Honda cb450 Twin.
« Reply #12 on: February 12, 2021, 05:28:16 AM »
Back "in the day" I had a friend with a CB450, the first year with front disc. I was on a CB77. After one long day's ride just after him getting the bike - well over 200 miles - he had no license plate, just a couple of jagged bits of it around the bolts. Familiar with this problem (CB77...) I helped him mount the replacement plate with fender and rubber washers. No plate breaking problem after that (although various engine and other parts rattled loose, of course).
We often rode from Toronto to Niagara Falls or even Buffalo and back after school just for something to do.
Long rides required a stop every hour or so to let the tingling and numbness in hands, feet, and butt go away a bit.

Offline 72 yellow

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Re: 1971 Honda cb450 Twin.
« Reply #13 on: February 12, 2021, 12:49:02 PM »
Also had a first year CB450 with the disc brake.  I think it was a 1970 1/2.  My first bike.  Bought it at Anderson's north of Detroit.  Had no trouble keeping up with friends 650 BSA's and Triumph's.  Sold it to buy a 73 XLH Sportster.