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Author Topic: 1976 CB750F project  (Read 4159 times)

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Offline oldskullero

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Re: 1976 CB750F project
« Reply #25 on: March 30, 2016, 09:13:42 PM »
@kickstart> fully noted. Thank you very much for the very good advise. Ill make sure i consider your advise as well. But hopefully with the help of the forum members like you and the rest, ill be able to do this project in a right way. I will be documenting this here so everybody will have a good record of what i did on the bike and may it help the rest of the owners of the 1976 cb750f. I will be sharing it here.

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Offline oldskullero

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Re: 1976 CB750F project
« Reply #26 on: March 30, 2016, 09:18:11 PM »


Quote from: Jerry Rxman Griffin aka MuthaF'er on March 30, 2016, 09:00:00 PM
Quote from: oldskullero on March 30, 2016, 07:56:27 PM
It is but its got leakage already and the clutch is slipping as well. Its been opened before but was not removed from the frame. It was just to detail and clean it. It deserves to be rebuild after how many years its been running.

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It HAS been removed from the frame if it was opened up. Exception: The ONLY way to take the top end off IN THE FRAME is if it's had a frame rail kit installed. Most of the time the engine comes out is due to internal damage or to do high performance work on it. If it's been worked up and it really doesn't need 'fixing' then you have a good chance of opening up a can of worms finding after market performance parts to 'fix' it.

So far its never been removed from the frame. It was only been cleaned and detailed for cosmetic use. This is all stock still. And if ever there will be irregularities, i will post that here. I have also been following hackaweektv from youtube who has a current build of cb750 k. It may help me as well. Idk if anybody has seen it but for mebit can be a good video for reference as well. And also his documentation is quite applicable for anybody who wants to make any revuild of his cb750.

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Offline T4HALO

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Re: 1976 CB750F project
« Reply #27 on: March 31, 2016, 06:36:46 AM »
Skull, Listen to these guys!!!  I recently purchased an older CB750, older than yours.  I don't touch anything on the bike without guidance from these experts.  These guys can look at a picture and tell you what needs to be done and how to do it. 

T4
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Offline flybox1

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Re: 1976 CB750F project
« Reply #28 on: March 31, 2016, 07:19:45 AM »
Quote from: flybox1 on March 28, 2016, 10:06:44 AM
The book was written for the K bikes, but the 76F engine internals are nearly identical to the K's.
I built my 78F engine with this book as my guide.  The process is the same for F and K bikes.

The HONDA shop manual is the only other material you should have on-hand. 
Download links are in the Manuals thread in the FAQ section of this site.
I'll make it super simple for you  ;D
Follow the link and scroll down for the CB750 manual.  download the six .pdf's
http://www.honda4fun.com/materiale-documentazione-tecnica/shop-manual
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline oldskullero

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Re: 1976 CB750F project
« Reply #29 on: March 31, 2016, 07:59:03 AM »
@t4halo> thanks man. No worries. Ill inspect the engine first and post all the photos here. This build will entirely be opened for everybody specially with hondaman who i hope to be with me throughout. Hopefully this one can help a lot of users of the 1976 cb750f who has the same goals with me but dont have enough info. This is what the community is all about.

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Offline Kickstart

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Re: 1976 CB750F project
« Reply #30 on: March 31, 2016, 08:08:08 PM »
Good luck oldskullhero!... and welcome to the forums (if no one else officially welcomed you yet).

I'm not sure what your bike situation is, but if this is your only bike then I would again recommend riding the bike first and maybe focus your project on the cosmetic/non-engine areas for now - enjoy the spring/summer/fall riding, and then use the off season to do the engine rebuild.

Of course, most of us that ride motorcycles do so against the good intention advice of others - so, yeah, it's your bike and if you want to rebuild the engine then go for it.

Whatever you decide, give us a link to your project thread when you start it.

Also, it's always a good idea to read some other build threads... there are a lot to chose from... including mine (that's been on hold for over a year now!):
http://forums.sohc4.net/index.php/topic,107713.0.html
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- Chris
75' CB750F Orange flake (rider)
75' CB750F Blue (Project)
75' CB750F Painted black (Project)
No Reserve Racing #171 AHRMA

Offline oldskullero

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Re: 1976 CB750F project
« Reply #31 on: April 01, 2016, 12:56:56 AM »
Quote from: Jerry Rxman Griffin aka MuthaF'er on March 30, 2016, 06:06:22 PM
70CB750,

RE: 8.

The F/F1 has the earlier clutch WITHOUT the double steel disc. That is a 77/78 F/K part. I just installed a 78 K clutch and it's matching basket in one 75 750F along with the matching clutch cover and a double steel plate upgrade in my other 75 750F. That would be a mistake in the book. The parts book shows the last few F1's DID upgrade to the 77/78 clutch around s/n 58,800'ish.

I also recommend getting a Honda brand Factory Service Manual
Hi jerry. Can you show the cover of the Honda Factory Service Manual you are referring to? I got downloaded already the pdf from sohc/four for the honda cb750 workshop manual. Im also waiting for @70cb750 reply on the messageni sent him

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Offline 70CB750

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Re: 1976 CB750F project
« Reply #32 on: April 01, 2016, 06:25:37 AM »
Quote from: oldskullero on March 30, 2016, 07:31:24 PM
@70Cb750 i sent you mail

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Must be the system being changed,  I did not get it.
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Prokop
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Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline oldskullero

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Re: 1976 CB750F project
« Reply #33 on: April 01, 2016, 06:35:59 AM »
@70cb750 > can you tell me what book did you use to post for the difference of the spring valves on one of the posts here?

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Offline flybox1

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Re: 1976 CB750F project
« Reply #34 on: April 01, 2016, 08:34:10 AM »
Quote from: oldskullero on April 01, 2016, 12:56:56 AM
Quote from: Jerry Rxman Griffin aka MuthaF'er on March 30, 2016, 06:06:22 PM
70CB750,

RE: 8.

The F/F1 has the earlier clutch WITHOUT the double steel disc. That is a 77/78 F/K part. I just installed a 78 K clutch and it's matching basket in one 75 750F along with the matching clutch cover and a double steel plate upgrade in my other 75 750F. That would be a mistake in the book. The parts book shows the last few F1's DID upgrade to the 77/78 clutch around s/n 58,800'ish.

I also recommend getting a Honda brand Factory Service Manual
Hi jerry. Can you show the cover of the Honda Factory Service Manual you are referring to? I got downloaded already the pdf from sohc/four for the honda cb750 workshop manual. Im also waiting for @70cb750 reply on the messageni sent him

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These are the same
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline flybox1

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Re: 1976 CB750F project
« Reply #35 on: April 01, 2016, 08:35:53 AM »
Quote from: oldskullero on April 01, 2016, 06:35:59 AM
@70cb750 > can you tell me what book did you use to post for the difference of the spring valves on one of the posts here?

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http://forums.sohc4.net/index.php/topic,156353.0.html

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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline oldskullero

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Re: 1976 CB750F project
« Reply #36 on: April 01, 2016, 08:47:17 AM »
From what book is this?

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Offline flybox1

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Re: 1976 CB750F project
« Reply #37 on: April 01, 2016, 09:30:09 AM »
I believe its a supplement/service bulletin
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline oldskullero

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Re: 1976 CB750F project
« Reply #38 on: April 01, 2016, 10:14:49 AM »
Where can we find a complete copy?

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Offline flybox1

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Re: 1976 CB750F project
« Reply #39 on: April 01, 2016, 10:18:02 AM »
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline 70CB750

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Re: 1976 CB750F project
« Reply #40 on: April 01, 2016, 11:37:04 AM »
Quote from: flybox1 on April 01, 2016, 09:30:09 AM
I believe its a supplement/service bulletin

I seem to remember that, some old timer would know.
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Prokop
_______________
Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline oldskullero

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Re: 1976 CB750F project
« Reply #41 on: April 01, 2016, 10:42:05 PM »
As of 01April2016, first purchase of the book, My CB750 Book is already made. Hardcover and hoping to recieve it within 20days. Got free shipping going to southeast asia. Thanks Hondaman for referral of 25%discount from lulu.com after i used the code LULURC ( must all be in uppercase, case sensitive).

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Offline oldskullero

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Re: 1976 CB750F project
« Reply #42 on: April 07, 2016, 03:26:03 AM »
As of 04April2016, My CB750 Book by Mark Paris aka Hondaman is already shipped. I cant wait to see this book.

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Offline oldskullero

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Re: 1976 CB750F project
« Reply #43 on: April 22, 2016, 04:54:11 AM »
And just an update of my purchase of the book "My CB750 book" by Mark Paris has just arrived and opened.

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Offline oldskullero

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Re: 1976 CB750F project
« Reply #44 on: April 26, 2016, 04:13:40 PM »
Next Purchases on the List....Tools

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