Author Topic: '77 cb750f2 cafe project  (Read 17712 times)

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Offline kenneyginter

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'77 cb750f2 cafe project
« on: January 13, 2011, 06:24:26 PM »
This is my winter project. I started ripping it apart back in september so it doesn't look like this anymore. It in a million pieces but I wanted to post an official project on the forums. I want to thank everyone who has given me advice and help so far. Updates to come. The engine will be hopefully be completed in the next couple of weeks. Until then thanks everyone.

O yea. Picked this baby up for free,  ;D you should have seen the smile on my face although it was not running. 

« Last Edit: March 23, 2012, 11:28:14 AM by kenneyginter »
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: here she is...1977 cb750 f2 (supersport)
« Reply #1 on: January 13, 2011, 06:27:14 PM »
as an update to my case issues, i ended up drilling straight through the bottom of the case and fitting a spacer and 10mm bolt  to seal it. i think it should werk.  :o

77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline tweakin

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Re: here she is...1977 cb750 f2 (supersport)
« Reply #2 on: January 13, 2011, 06:48:27 PM »
Nice, good to see you started a build thread.  Looking forward to seeing another F come together.

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #3 on: January 13, 2011, 07:06:16 PM »
thanks tweaks and thanks for ur help so far
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline brandEn

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Re: 1977 cb750 f2 (supersport)
« Reply #4 on: January 13, 2011, 08:17:57 PM »
Sweet another F build. I started mine in September as well. Looking forward to more updates and pictures.

Offline noahspop

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Re: 1977 cb750 f2 (supersport)
« Reply #5 on: January 14, 2011, 08:54:10 AM »
Welcome aboard. You have come to the right place. I too love the F2.
Can't beat the price. We love pics, so keep them coming.

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #6 on: January 14, 2011, 06:18:19 PM »
more images  ???





77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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i need some help.
« Reply #7 on: January 14, 2011, 06:37:33 PM »
so i need some help, im going to try an assemble the engine soon and i cant remember where these sleeves go? i know they go in the some of the holes im just not sure which ones ??? also on the top half of the case i cant remember where the o rings go. im having trouble understanding the parts breakdowns. any help would be GREAT! ;D



77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline brandEn

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Re: 1977 cb750 f2 (supersport)
« Reply #8 on: January 14, 2011, 08:07:56 PM »
Those are called "knock pins" check out the CB750F manual and parts fiche for exactly where they go.

page 11 and 15 on this link
http://data.sohc4.net/PL750/CB750_F1.pdf

link to manuals
http://www.sohc4.net/index.php/cb750/books-manuals-guides

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #9 on: January 14, 2011, 08:27:31 PM »
hey bwj, that looks the same as the breakdown i have, its just unclear to me which one the 4 set down in
« Last Edit: January 14, 2011, 08:36:09 PM by kenneyginter »
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #10 on: January 14, 2011, 08:29:15 PM »
are there suppose to be 8 knock pins on the top of the cylinder?
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline brandEn

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Re: 1977 cb750 f2 (supersport)
« Reply #11 on: January 14, 2011, 09:23:11 PM »
Yup 8 of them. 4 inbetween each pair of cylinders each pin gets a seal as well.

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #12 on: January 14, 2011, 09:28:40 PM »
yea, i only have 4. :'(. got to find some more.
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kap384@telus.net

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Re: 1977 cb750 f2 (supersport)
« Reply #13 on: January 18, 2011, 10:33:50 AM »
Great to see another F2 build
1965 Honda CB450K0
1972 Honda CT70K1
1975 Honda MR50
1975 Honda CB400F Supersport
1977 Honda CB750F2 Supersport
1978 Honda XL100
1979 Honda CBX Supersport
1982 Honda VF750S Sabre - Adventure Bike modified
1983 Honda CX650T
1995 Honda VFR750
2016 Honda CRF1000L Africa Twin
2015 KTM 200 XC-W
1963 Suzuki T10
My 1977 CB750F restoration - http://forums.sohc4.net/index.php?topic=66779.0
My 1975 CB400F restoration -
http://forums.sohc4.net/index.php?topic=145196.msg1651779#msg1651779
'More Stock Than Not' thread - http://forums.sohc4.net/index.php?topic=90807.500
My CT70 Resurrection - http://forums.sohc4.net/index.php?topic=145221.0
Best Motorcycle Tool Ever - https://www.engduro.com

Offline Mandic

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Re: 1977 cb750 f2 (supersport)
« Reply #14 on: January 19, 2011, 03:59:56 PM »
X2 to what he said.  Glad to see another 77F getting a clean up.
77 CB750F - Cafe/Daily Rider

Offline Mandic

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Re: 1977 cb750 f2 (supersport)
« Reply #15 on: January 19, 2011, 04:15:11 PM »
yea, i only have 4. :'(. got to find some more.

I am reading the "F Supplement" for the Factory Service Manual right now.  It specifically notes that the 77 only has 4 of these, not 8 like previously.

Here is a link, the F2 section starts on page 25 and mentions this on 30: http://data.sohc4.net/HSMCB750F.pdf
77 CB750F - Cafe/Daily Rider

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #16 on: January 19, 2011, 08:24:13 PM »
great....the delivery gets here tomorrow.
« Last Edit: January 22, 2011, 08:19:44 PM by kenneyginter »
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline Freaky1

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Re: 1977 cb750 f2 (supersport)
« Reply #17 on: January 20, 2011, 02:14:34 AM »
Another F rejoins the land of the living and nothing will get a project started like a free bike either! Good luck and look forward to seeing the results.
That which does not kill you leaves cool scabs which turn into awesome scars.

'77 CB750F Come on...were almost there!

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #18 on: January 22, 2011, 08:34:22 PM »
not part of the land of the living yet bit doing a lot of work this weekend. i will post some updates monday. 
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #19 on: January 23, 2011, 01:01:37 PM »


hey guys. got to werk on the bike this weekend. which one of these goes on top of the piston? is it the bigger ring or the smaller one? i cant find it in any of the breakdowns. thanks
« Last Edit: January 23, 2011, 06:54:07 PM by kenneyginter »
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: 1977 cb750 f2 (supersport)
« Reply #20 on: January 23, 2011, 07:31:54 PM »
other werk i got done this weekend


77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: piston ring help?
« Reply #21 on: January 24, 2011, 02:51:56 PM »
can anyone help me out with the order the piston rings go on?
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline MasterChief750

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Re: piston ring help?
« Reply #22 on: January 26, 2011, 05:53:49 AM »
i believe its the one on the right, ur not reusing the rings are you?
1978 CB750 K - Project Red Headed Step Child
1976 CB750 K - Drag Bike
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Offline chimmychong86

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Re: piston ring help?
« Reply #23 on: January 26, 2011, 09:24:53 AM »
http://forums.sohc4.net/index.php?topic=64519.0
That should answer the ring question.
Dont forget to stagger them accordingly.
Current/First Motorcycle - 1977 CB550F

Offline RpBet

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Re: '77 cb750f2 cafe project
« Reply #24 on: January 27, 2011, 10:22:15 AM »
Kenny, I am with Masterchief, spend the extra $ and get new rings. But first Hone the barrels. You can grab a honing tool for $20
78 cb750 Cafe'