Author Topic: 1972 CB750 Four K2 -- Rebuilt to NEW OLD STOCK -- PIX ON PAGE 50  (Read 241256 times)

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Offline HondaMan

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #775 on: October 19, 2014, 08:59:33 PM »
Little time, so little progress, but progress nonetheless.

Crank drain and oil galley plugs, I showed them the least love when it came to prep work as I didn't wan't them too shiny and guess what, I can't take a pic without them blinding the camera! The levers, I sanded off some deep pits then quick incremental wet sanding rounds, they came out alright.

I might suggest this on the levers: when I did that with mine, they kept turning my hands black when riding. It never got better until I "sealed" them (for lack of a better word?) with Simichrome polish. When I used that stuff, the rags came out black from it, but the levers quit doing it to my fingers.

After I finally wore out the levers (pivots) I got new ones, with the clear plastic coating on them. That works, too!
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.
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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

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Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #776 on: October 19, 2014, 09:57:30 PM »
Little time, so little progress, but progress nonetheless.

Crank drain and oil galley plugs, I showed them the least love when it came to prep work as I didn't wan't them too shiny and guess what, I can't take a pic without them blinding the camera! The levers, I sanded off some deep pits then quick incremental wet sanding rounds, they came out alright.

I might suggest this on the levers: when I did that with mine, they kept turning my hands black when riding. It never got better until I "sealed" them (for lack of a better word?) with Simichrome polish. When I used that stuff, the rags came out black from it, but the levers quit doing it to my fingers.

After I finally wore out the levers (pivots) I got new ones, with the clear plastic coating on them. That works, too!
Mark!! I'm glad you're still subscribed. I've sealed ALL the pieces I've done so far with White Diamond Metal Polish per Ryan/73Nancy's recommendation, that stuff works great. Same thing, while it makes the final finish slightly dull, the rags come out black (excess polishing compund??) but the final buff cloth remains spotless.

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #777 on: October 24, 2014, 12:29:35 PM »
Finally finished sanding the new dyno cover. Acid burn is a terrible thing. I sanded so much off due to how deep the burns were, its now a performance part, lightened and all  :P :P :P

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #778 on: October 28, 2014, 10:09:46 PM »
It was marked R2, lift is. 285, and. 301..... Not sure of year..
This just worked out great! Its a K2 cam.

Excellent info on various cams and lifts by Mark

http://forums.sohc4.net/index.php?topic=62266.msg677979#msg677979

Offline Davez134

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #779 on: October 28, 2014, 10:29:22 PM »
Replying to a post on the last page, I used Teflon paste on my head studs on my last build.  No leaks after about 8000 miles.

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #780 on: November 02, 2014, 06:49:42 PM »
And finally, here it is. Project Ice Cream, officially done with reconditioning every last bit. Now, moving on to slow assembly of little bits over the winter, then full throttle next spring.

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #781 on: November 02, 2014, 06:52:21 PM »
Forgot to note, the oil based paint sharpie still hasn't showed up, that's what's I'm going to use to fill out the black background on the Honda logo and the rim around it.

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #782 on: November 08, 2014, 04:00:42 PM »
So this happened  :'( :'(

\

Need a K2 tach now, paged Bill already, anyone else have one?

Offline BPellerine

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #783 on: November 08, 2014, 07:35:05 PM »
ouch!bill
1978 CB 750K ard and webers
another anfob

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #784 on: November 08, 2014, 10:15:06 PM »
Sux.
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 HondaMan

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #785 on: November 08, 2014, 10:42:11 PM »
Ow!
How did that happen?
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 edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #786 on: November 13, 2014, 09:04:47 AM »
Ow!
How did that happen?
On their ride home  to me >:( just my rotten luck.

Still no luck with a replacement, anyone have a K1/K2 tach stashed away and willing to help? Even a parts one will do as long as the core is functional.

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #787 on: December 24, 2014, 05:54:00 PM »
Gauge issue sorted, ended up using a parts tach to fix it up, caused  a little scuffing and scratching on the outer housing, will need some touch up paint.

In the meanwhile, started putting little stuff together, starting with this carb back plate. DIY zinc has been holding well, fingers crossed ;)

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #788 on: January 17, 2015, 04:22:33 PM »
Ah, the one step forward another one back phase! Started putting the controls back together and had a nightmare getting those pesky springs and balls to stay in place. Thankfully, my beautiful wife who has much better dexterity helped me out and we got the left hand control done. Nice new sleeving from vintage connections, just need to dremel clean the bullet connectors before assembly. I ran the turn signal buzzer shut off in its own sleeve in case a future owner wants to get rid of it, should be able to do a tiny bit easier.

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #789 on: January 17, 2015, 04:24:23 PM »
As for the one step back, began working on the RHS and stumbled at first step. After painstakingly installing that kill switch circlip back in place, something was off, the kill switch didn't feel right and sure enough, I have the wrong one  >:( >:( >:(

BILLL!!!!!!!!! HAALPPPPPPPPPP!

Offline seanbarney41

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #790 on: January 17, 2015, 04:50:55 PM »
lol, that is just the sort of trick Honda loved to play!  It seems like the correct switch has to be one or the other.  You should be able to look at your housing and see which is correct.   I am guessing the shiny new, or refinished one that you have is not the correct one. :'(
If it works good, it looks good...

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #791 on: January 17, 2015, 04:52:52 PM »
Indeed. The broken one on the right is the correct one, shame that it was damaged during shipping (2nd thing on the project hurt by shipping :() I didn't even think about it till I started putting them together. If anyone has one, I can trade my nicely finished one!

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #792 on: January 17, 2015, 05:57:51 PM »
Its nicely detailed in Mark's book, I should have paid attention, oh well live and learn..

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #793 on: January 26, 2015, 07:17:09 PM »
I was saving this for later but gotta keep up with DaveZ  ;D ;D ;D ;D ;D ;D ;D ;D

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #794 on: January 26, 2015, 07:17:43 PM »
Got em from CMSNL last year after the fiasco that was my attempt to save the old set.

Offline Davez134

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #795 on: January 27, 2015, 12:17:40 AM »
I was saving this for later but gotta keep up with DaveZ  ;D ;D ;D ;D ;D ;D ;D ;D
Awww yeah!!!! ;D ;D ;D

Offline Bill/BentON Racing

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #796 on: January 27, 2015, 04:41:02 AM »
Way to go my man! Looking real good. Finishing up your box today, I'll be in touch, Bill
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Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985.
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1993 HRC RS125 | 1984 NS400R | 1974 Honda CB750/836cc (Calendar Girl) | 1972 CB 500/550 Yoshi Kitted 590cc | 1965 Honda CB450 Black Bomber | 1972 Suzuki T350 | 1973 88cc | Z50/Falcons Pit Bike | 1967 CA100| 1974 CB350 (400F motor)...and more.
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Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #797 on: January 27, 2015, 08:52:12 AM »
Thanks! I felt like this build deserved it, considering how many NOS or near NOS items are going on it. Came at a costly price of non stop work for weeeeks!

Offline tweakin

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #798 on: January 27, 2015, 06:40:21 PM »
Great work here!  That zinc plating looks really good.  I decided to go with CRs for my K1 so my rebuilt stockers might be up for sale soon if the zinc plating doesn't hold...  ;)

Offline edwardmorris

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Re: 1972 CB750 Four K2 -- Project "Ice Cream"-- BUILD RESUMED
« Reply #799 on: January 27, 2015, 08:44:32 PM »
Thanks Tige! I'm all set for this one thanks to Bill, although my K3's carbs are a total mess. I might just take you up on that.