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Author Topic: 1977 CB400F Rebuild  (Read 20434 times)

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Offline bill440cars

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Re: 1977 CB400F Rebuild
« Reply #50 on: December 04, 2016, 06:46:41 PM »


     Whew, finally caught up with ya, on this build. I am getting anxious to see more, but I know things take time and you have the "Life things" to deal with as well. Really an awesome build going here and your Girlfriend will have Quite The Ride as well.  ;)
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Offline SOHC4 Cafe Racer Fan

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Re: 1977 CB400F Rebuild
« Reply #51 on: December 04, 2016, 06:56:54 PM »
Those connectors (and the new sheathing) are beautiful. The only downside is that they are reliant on old wires.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline iiAtlas

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Re: 1977 CB400F Rebuild
« Reply #52 on: December 14, 2016, 09:49:49 AM »
Wow, just found this thread.  Absolutely brilliant work so far and you are working at a great pace!  Can't wait to see how this keeps going...now bike to my project...

Thanks for bringing us along for the ride  8)
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Offline 2strokeTrush

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Re: 1977 CB400F Rebuild
« Reply #53 on: December 14, 2016, 04:06:14 PM »
cool project so far!
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 350F project-http://forums.sohc4.net/index.php?topic=133079.0

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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #54 on: February 08, 2017, 05:29:54 PM »
So hi......long time no update!

Life stuff caught up with us.  Hollidays, long hours a at work, money...the usual life things.  At this point in time i have prepped the first tank for primer.  Minor body work was done to take care of a few small dents.  I have it in primer and just waiting for a final sand to minimize any other imperfections.  Our side covers are still in good shape, so they just got the stickers pulle doff and scuffed up ready to paint.

The first tank is going back to the same maroon, or at least very close to the same stock color that came on it.  Candy Antares Red was the name..so we're pretty excited to see it back to its lovely stock color.

ALSO.....we've been in contact with Cognito, assuming most everyone on this forum knows who they are.  After tomorrow we should have a full GSXR front end ordered up for the 400.  I'm not going to go into details, but we're both really excited.  We decided to go with one of their kits for simplicity sake.  I will literally be able to just bolt it together and go.  While i appreciate how some on this forum have built their own front ends from scratch.  Pieced them together using different year parts and machined they're own brackets and steering stems.....I just dont think that will do this motorcycle justice when its completed.

Looking forward to be back on this motorcycle build and moving forward!
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Offline SOHC4 Cafe Racer Fan

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Re: 1977 CB400F Rebuild
« Reply #55 on: February 08, 2017, 10:17:35 PM »
I bet Cal is already lacing up his rear wheel rim to that new hub.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #56 on: February 09, 2017, 07:36:51 PM »
Quote from: calj737 on February 08, 2017, 07:44:23 PM
Well then you ought to be upgrading the rear hub to Devin's new matching disc hub! Just off the mill, gsxr disc compatible, comes with bracket, you supply the Brembo P32/34 caliper. Uses your cush drive and axle.

Sooooooo......that is freaking fantastic.  Message to follow.
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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #57 on: February 10, 2017, 05:39:25 AM »
Fabulous.  Absolutly epic.  Devin was a huge help in putting together the front end kit for the 400.  Guess he will be getting yet another email from me! 

Thanks for the info good sir!
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Offline SOHC4 Cafe Racer Fan

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Re: 1977 CB400F Rebuild
« Reply #58 on: February 10, 2017, 07:13:51 AM »
Devin is one of those guys that you just say, "Shut up and take my money!" 

FYI - he has a nice feature (actually 2) in the latest issue of Cafe Racer Magazine.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #59 on: February 10, 2017, 10:26:30 PM »
He definitely did take our money lol.  He was fantastic to deal with and is getting us everything we wanted and more!
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Offline grcamna2

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Re: 1977 CB400F Rebuild
« Reply #60 on: February 20, 2017, 07:34:43 AM »
Really enjoying your quality build,the engine looks very nice;did you use VHT #SP127 Univ. Alum. ?
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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #61 on: February 20, 2017, 06:18:49 PM »
Quote from: grcamna2 on February 20, 2017, 07:34:43 AM
Really enjoying your quality build,the engine looks very nice;did you use VHT #SP127 Univ. Alum. ?

We used SP995 cast aluminum for the engine and other bits.  We sprayed out some of the 127 but it just didnt do it for us color wise!

Thank you for the kind words, means a lot!  Should have some moinor updates here in the next few days.  Got some more stuff in the mail.
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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #62 on: February 20, 2017, 07:44:42 PM »
I do have a question.  I'm currently taking apart the carbs, and im slightly stuck.  I'm wondering if these are just pressed in and can be popped apart or is there a fancy trick to separating them?



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Offline MoMo

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Re: 1977 CB400F Rebuild
« Reply #63 on: February 20, 2017, 07:49:08 PM »
Remove the carb top and you'll see how they are held in, one bolt.  Larry
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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #64 on: February 20, 2017, 08:18:22 PM »
Thank you kind sir! Now lets just hope i dont mess these carbs up lol
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Offline BLAC

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Re: 1977 CB400F Rebuild
« Reply #65 on: February 20, 2017, 08:21:39 PM »
Just take lots of pictures and use the explode schematics available at cmsnl.com

you will be fine  ;D
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If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

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*2014 BMW S1000RR (sold)
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http://forums.sohc4.net/index.php/topic,154614.0.html

Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #66 on: February 20, 2017, 08:41:12 PM »
The last probably 40 photos or so on my iPads camera roll is just carbs haha.  If there is one thing I've learned over time with automobiles and motorcycles, the more photos you have the better off you are. 

Thanks for the link to the schematics, that is fantastic.
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Offline RAFster122s

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Re: 1977 CB400F Rebuild
« Reply #67 on: February 20, 2017, 11:02:31 PM »
Be very gentle with the tubes between carbs, if broken you will kick yourself as it is difficult to find replacements or you will have to make one.
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Offline BLAC

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Re: 1977 CB400F Rebuild
« Reply #68 on: February 21, 2017, 11:36:54 AM »
Quote from: 503400f on February 20, 2017, 08:41:12 PM
The last probably 40 photos or so on my iPads camera roll is just carbs haha.  If there is one thing I've learned over time with automobiles and motorcycles, the more photos you have the better off you are. 

Thanks for the link to the schematics, that is fantastic.

They have been a huge help to me, I printed out all 16 diagrams for my bike. I typically use that site to get the part numbers then search them on Partzilla since they are US based and have most of the stuff.
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If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #69 on: February 21, 2017, 08:07:14 PM »
Quote from: RAF122S on February 20, 2017, 11:02:31 PM
Be very gentle with the tubes between carbs, if broken you will kick yourself as it is difficult to find replacements or you will have to make one.

Noted.  Mine appear to be in pretty good shape.  They're not hard or crunchy at all.
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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #70 on: February 21, 2017, 10:36:57 PM »
Got the carbs taken care of tonight







Masking everything off takes forever.  Should get them put back together tomorrow!
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Offline Eddie Kirby

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Re: 1977 CB400F Rebuild
« Reply #71 on: February 22, 2017, 04:02:39 AM »
Hi guys, just had a quick read. Looks like a decent job.
I recently purchased a 1977 400-4 "basket case" and I mean a real "basket case" So for me your rebuild is an interesting read.
Probably won't start on mine until later in the year when the wife goes on hols.(need to finidh the Guzzi first) (she has no idea what is hidden in my shed)
My only question is the paint. I have used HiTemp paint in the past with no issues. However!!!! have you ever used the HiTemp clear lacquer. I've tried 2-3 different brands and no matter how long you bake or at what temp the bloody stuff won't cure.
Any idea's?
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Offline Eddie Kirby

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Re: 1977 CB400F Rebuild
« Reply #72 on: February 22, 2017, 04:19:23 AM »
Well I have to be doing something wrong.
But yes have been using same brands, out of frustration even used odd paint to lacquer just to try and get a finish.
And this stuff ain't cheap.
I am going to have a yarn with my local guy later in the week.
No doubt he'll have a good laugh. Strange bloke! likes it when I'm suffering.
Wonder if all spray painters are the same!!!!!!

Thanks for the prompt reply.

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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #73 on: February 22, 2017, 12:03:29 PM »
Quote from: Eddie Kirby on February 22, 2017, 04:19:23 AM
Well I have to be doing something wrong.
But yes have been using same brands, out of frustration even used odd paint to lacquer just to try and get a finish.
And this stuff ain't cheap.
I am going to have a yarn with my local guy later in the week.
No doubt he'll have a good laugh. Strange bloke! likes it when I'm suffering.
Wonder if all spray painters are the same!!!!!!

Thanks for the prompt reply.

He's probably correct.  Odds are something you sprayed under the clear is whats causing it not to cure.  Be sure to check labels, they generally tell you what you can spray before and after each specific product. 

What were you spraying a hi-temp clear laquer over if you dont mind me asking?

Quote from: calj737 on February 22, 2017, 03:55:15 AM
And don't forget to remove the tape. They'll never run right clogged up like that  ;) ;D

Removing the tape is the worst part lol
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Offline 503400f

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Re: 1977 CB400F Rebuild
« Reply #74 on: February 22, 2017, 01:24:54 PM »


you know for such a small part of the motorcycle, sure takes up a lot of space on the table lol
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