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hi there i have a honda cb750 hardtail chop and the engine is in need of rebuilding . but people tell me that the engines are rubbish and unreliable.. i dont no much about these engines so any advice would be great thanks....

unreliable
1 (12.5%)
engine
4 (50%)
?????????
3 (37.5%)

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Author Topic: CB750-FOUR SOHC  (Read 3459 times)

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750hardtail

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CB750-FOUR SOHC
« on: February 17, 2011, 02:26:17 PM »
hi there i have a honda cb750 hardtail chop and the engine is in need of rebuilding . but people tell me that the engines are rubbish and unreliable.. i dont no much about these engines so any advice would be great thanks.... ??? :P
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Offline ekpent

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Re: CB750-FOUR SOHC
« Reply #1 on: February 17, 2011, 04:10:12 PM »
Rubbish and unreliable ??? You are kidding right. You need more Honda friends.
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Offline Johnie

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Re: CB750-FOUR SOHC
« Reply #2 on: February 17, 2011, 04:30:17 PM »
Rubbish and unreliable...if that were the case there would be no forum here. With minimal maintenance these engines will run forever. Many of us will attest to taking a bike from a 20+ year slumber, change the oil and fire it right up. Good luck with your project and welcome to the forum.
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1970 CB750K0 - Candy Ruby Red
1973 CB750K3 - Candy Bacchus Olive or Sunflake Orange
1970 Chevy Chevelle SS396 - Cortez Silver
1976 GL1000 Sulphur Yellow

Oshkosh, WI  USA

Offline immortal

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Re: CB750-FOUR SOHC
« Reply #3 on: February 17, 2011, 06:22:38 PM »
I think someone is "winding you up" = Teasing you, English translation.

You could not have picked a better project, good luck and enjoy, I hear you can get 100,000 miles out of these motors and they are reliable as hell!

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Sometimes...the hard thing and the right thing are the same thing!

1976 CB750F "Pegasus Bike"

http://forums.sohc4.net/index.php?topic=80492.0

Offline mrbreeze

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Re: CB750-FOUR SOHC
« Reply #4 on: February 17, 2011, 06:35:35 PM »
As everyone has said so far.........these bikes are probably the most reliable ever made. Parts are plentiful. Easy to maintain. If you don't feel like rebuilding yours....look on Ebay. Engines pop up all the time for cheap. I have a runner that I have owned for 11 years and just picked up a couple more for projects last year. There are people here that have owned their bikes since they were new in the 70's. Ther are also people here that own and ride multple SOHC's and other brands as well. Whoever told you they are unreliable don't know sh!t about bikes.
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Offline Jt550

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Re: CB750-FOUR SOHC
« Reply #5 on: February 17, 2011, 06:57:19 PM »
Dude, read this forum... I mean REALLY read it.....!!!! Do you think we'd ALL be here if ANY CB was "rubbish"... Just like any bike... If you build it right the first time and give it the love it needs, it will love you right back for years to come.....

A Honda tech of 30+ years once said to me and I quote "YOU COULD RUN SAND THOUGH THESE THINGS & THEY'D STILL RUN"

FIX it... RIDE it..........................
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Tyler Durden: You're not your job. You're not how much money you have in the bank. You're not the car you drive. You're not the contents of your wallet. You're not your f*<king khakis. You're the all-singing, all-dancing crap of the world.

-78 CB550k with a BIG #$%* Eating Grin-

750hardtail

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Re: CB750-FOUR SOHC
« Reply #6 on: February 21, 2011, 02:12:08 PM »
hi thanks for all the replies.. i think my mate is trying to get the engine cheap thats why hes telling me all this stuff but he can go and f**k himself now... thanks again guys....ps can i put a pic on my profile ? if so how ??????
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Offline Magpie

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Re: CB750-FOUR SOHC
« Reply #7 on: February 21, 2011, 02:51:46 PM »
If the number on the engine is less than 7414 it is rubbish and unreliable, please ship it to me and I will confirm the same.  ::)
Otherwise they are rock solid and reliable.  ;D ;D
Cliff.
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Offline Retro Rocket

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Re: CB750-FOUR SOHC
« Reply #8 on: February 21, 2011, 02:58:13 PM »
40 year old bikes running around unopened with large miles, if thats unreliable i'll eat my hat, hell, i'll even eat my bike..... ;D
Seriously mate, these are one of the most reliable engines ever made, you look after it and it will last a very long time..... ;)
As for your mate..!!!   he needs some edumacating..... ;D

Mick
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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 Really?

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Re: CB750-FOUR SOHC
« Reply #9 on: February 21, 2011, 03:37:53 PM »
They are very easy to work on.  What ya don't know can be found here.  What you have not done to it has probably already been done here.  So, someone will be able to help or you can find it in a thread/post.
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I don't have a motorcycle, sold it ('85 Yamaha Venture Royale).  Haven't had a CB750 for over 40 years.

The Wife's Bike - 750K5
The Kid's Bike - 750K3

Offline markb

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Re: CB750-FOUR SOHC
« Reply #10 on: February 21, 2011, 04:02:34 PM »
Quote from: Magpie on February 21, 2011, 02:51:46 PM
If the number on the engine is less than 7414 it is rubbish and unreliable, please ship it to me and I will confirm the same.  ::)
Otherwise they are rock solid and reliable.  ;D ;D
Cliff.
If that's too far too ship it, send it to me.  ;)
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1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)

750hardtail

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Re: CB750-FOUR SOHC
« Reply #11 on: February 22, 2011, 12:22:02 PM »
hi the engine was taken from a 1979 bike .. not sure what the numbers are on the engine but can you tell from the year of manufacture ? cheers
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Offline Roach Carver

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Re: CB750-FOUR SOHC
« Reply #12 on: February 22, 2011, 07:18:07 PM »
1979 ......... DOHC?
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Offline scroggins5000

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Re: CB750-FOUR SOHC
« Reply #13 on: February 22, 2011, 08:08:00 PM »
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Offline Ricky_Racer

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Re: CB750-FOUR SOHC
« Reply #14 on: February 22, 2011, 08:17:03 PM »

Yep!  Those are rubbish!   ;D  RR

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750hardtail

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Re: CB750-FOUR SOHC
« Reply #15 on: February 23, 2011, 03:55:25 PM »
yep its deffo a SOHC MODEL...
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Offline scroggins5000

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Re: CB750-FOUR SOHC
« Reply #16 on: February 23, 2011, 04:22:00 PM »
Quote from: 750hardtail on February 23, 2011, 03:55:25 PM
yep its deffo a SOHC MODEL...

Honda only produced the SOHC from 69-78.

http://en.wikipedia.org/wiki/Honda_CB750
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Offline knowsnothing

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Re: CB750-FOUR SOHC
« Reply #17 on: February 23, 2011, 04:42:36 PM »
Maybe it's a 650? ???
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1978 CB750k Green - 811 engine
1978 CB750k Blue - for sale
1974 CB375F Faded Black - had to have that 6th gear
1976 CB400F Red - in many pieces
1973 CB350F TBD - in many pieces

Offline Retro Rocket

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Re: CB750-FOUR SOHC
« Reply #18 on: February 23, 2011, 04:43:58 PM »
A picture paints a thousand words..... ;) ;D

Mick
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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.

750hardtail

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Re: CB750-FOUR SOHC
« Reply #19 on: February 28, 2011, 03:51:17 PM »
its got 750 sohc on the top of the engine...
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Offline markb

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Re: CB750-FOUR SOHC
« Reply #20 on: February 28, 2011, 03:56:59 PM »
Then it's a keeper.  ;)
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1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)

Offline mrbreeze

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Re: CB750-FOUR SOHC
« Reply #21 on: February 28, 2011, 09:06:30 PM »
Quote from: markb on February 28, 2011, 03:56:59 PM
Then it's a keeper.  ;)
Well...............then it ain't a 79!!!!
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Offline Jt550

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Re: CB750-FOUR SOHC
« Reply #22 on: March 01, 2011, 02:42:23 AM »
Quote from: mrbreeze on February 28, 2011, 09:06:30 PM
Quote from: markb on February 28, 2011, 03:56:59 PM
Then it's a keeper.  ;)
Well...............then it ain't a 79!!!!

Well maybe the frame is a 79 & there was a motor swap somewhere in it's past...
BUT man some nice BIG pictures would sure HELP ALOT... ;D
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Tyler Durden: You're not your job. You're not how much money you have in the bank. You're not the car you drive. You're not the contents of your wallet. You're not your f*<king khakis. You're the all-singing, all-dancing crap of the world.

-78 CB550k with a BIG #$%* Eating Grin-

Offline Jt550

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Re: CB750-FOUR SOHC
« Reply #23 on: March 01, 2011, 02:45:10 AM »
Quote from: Retro Rocket on February 23, 2011, 04:43:58 PM
A picture paints a thousand words..... ;) ;D

Mick

X 10 ( bring on the pictures! )
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Tyler Durden: You're not your job. You're not how much money you have in the bank. You're not the car you drive. You're not the contents of your wallet. You're not your f*<king khakis. You're the all-singing, all-dancing crap of the world.

-78 CB550k with a BIG #$%* Eating Grin-
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