Author Topic: 1972 CB750 Restorathon Day 19 Paint  (Read 13833 times)

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Offline chewbacca5000

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1972 CB750 Restorathon Day 19 Paint
« on: August 13, 2012, 07:39:25 PM »
This project has been on the back burner for some time, but not that I am turning 40 on September 1st and my CB750 is 40 I figure this is as good of a time as any.

She may not look like much, but she is a strong runner Tony you were right.

Parts List & Planned Upgrades

1. Steering stem tapered bearings - All balls
2. Bronze swing arm bushings
3. New tires
4. Possible 811 Kit .5 oversize
5. Heavy duty studs
6. Serdi valve job with bronze guides
7. Sandblast or powercoat frame
8 New wiring harness.
9. New chain and sprockets
10. Seals and gaskets throughout
11. Repair or replace broken unicorn triple tree clamp
12. Sweet Original Kerker 4 into 1.


Wish List
1. Race cut gears.
2. Cycle X Super Rods or carillo
3. Lightened crank?
4. MReick porting.
5. Mega cycle 123 cam close to sandcast.


Day 1 A good start with tank and side covers painted silver metallic flake.  Phase I for candy sunrise orange.

Day 2 Get motor out and bike stripped.

Day 3 Pound out neck race and work on swing arm bushings

Day 4 Drop bike at sandblaster and think about powder or paint

Day 5 Inspect top end  and drop off at machine shop. Rebuild carbs.

Day 6  Get parts back from sandblaster and work on forks, brakes etc..

Day 7,8  Powder or paint frame

Days 9, 10, 11, 12 Work on lower end making sure all is good here.

Day 13, 14, 15 Get Parts back from machine shop and resemble top end.

Day 16, 17 Finishing painting tank and side covers Maybe

Day 18 Ride.






« Last Edit: September 02, 2012, 03:00:19 PM by chewbacca5000 »

Offline Mcwilliams570

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #1 on: August 13, 2012, 07:44:18 PM »
That is a very ambitious plan will be watching this one. There is one major thing you forgot to add that I would like to point out... I don't see drinking any beer on the days oversight maybe? :)

Matt
My CB550 project http://forums.sohc4.net/index.php?topic=101182.0

Project UFB Cb550 http://forums.sohc4.net/index.php?topic=112143.0

Like a 10 dollar hooker on Friday night its going to be ridden.

1974 cb550
1975 cb550
2005 vmax
2009 vmax-sold
1981 gl500i

Offline Stev-o

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #2 on: August 13, 2012, 07:46:04 PM »
Wow, very ambitious plan.  If you plan to sell down the road, why not paint the frame yourself and save the cost of PC. Your a Pro now, you can do it!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #3 on: August 13, 2012, 07:52:27 PM »
That is a very ambitious plan will be watching this one. There is one major thing you forgot to add that I would like to point out... I don't see drinking any beer on the days oversight maybe? :)

Matt

Beer is implied.  I will need an IV after hefting out that 180lbs monster tomorrow.

Offline Stev-o

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #4 on: August 13, 2012, 07:57:30 PM »
Wish I could help (and drink the beer too!)
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #5 on: August 13, 2012, 08:10:23 PM »
Wow, very ambitious plan.  If you plan to sell down the road, why not paint the frame yourself and save the cost of PC. Your a Pro now, you can do it!

Thanks Steve!  You are too kind.  I am seriously thinking of going with a sliver bling metallic frame or candy orange with lots of sparkle.

For the tank and side covers I am still trying to decide.  Might leave some silver on the tank for a stripe.  I got a rough idea in my head.  Sleek, modern and retro all at the same time.

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #6 on: August 13, 2012, 08:12:28 PM »
Found out the Unicorn triple is broken bummer.  Also a pic of the tank and side covers.  Wish I had tried painting sooner.  Lots of fun.

Offline Stev-o

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #7 on: August 13, 2012, 08:27:50 PM »
That is a bummer, they are expensive. Can it be welded?
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #8 on: August 13, 2012, 08:49:57 PM »
That is a bummer, they are expensive. Can it be welded?

Not sure 3/4 cracked.  Got a name of a local welder not sure if he is good, but was recommended by a welding supply company.  Makes me wish I had a mig with argon.

Offline Stev-o

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #9 on: August 13, 2012, 09:02:34 PM »
Call Jim, I'd rather pay a little more (for shipping) and have it done right.

http://forums.sohc4.net/index.php?topic=111096.0
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #10 on: August 13, 2012, 09:11:57 PM »
Call Jim, I'd rather pay a little more (for shipping) and have it done right.

http://forums.sohc4.net/index.php?topic=111096.0

Thanks for the tip I will give him a call!

Offline the technological J

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #11 on: August 13, 2012, 10:57:19 PM »
i paid 200 for a new unicorn... i would have it welded... i rode mine was brokeand i rode it in extreme conditions without a problem...... if i had the peice you had i would weld it and ride with absolute confidence...
Fyi the "extreme"conditions were the tail of the dragon aggresively and 1200+ miles onserious twistys on my summer vacation... i did 3200 miles on that broken triple with no prob.. i was watching it very closely for any movement
70 KO...sold to fund the ST http://forums.sohc4.net/index.php?topic=88800.0(Alpha)
74 Kaw 250 Enduro http://forums.sohc4.net/index.php?topic=124278.0
K4 added to collection! http://forums.sohc4.net/index.php?topic=104784.0
78 750K... http://forums.sohc4.net/index.php?topic=60257.0 (Omega)sold to fund the K4
94 ST1100..Gone
72 750 K2 Stay tuned!

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #12 on: August 14, 2012, 05:28:08 AM »
i paid 200 for a new unicorn... i would have it welded... i rode mine was brokeand i rode it in extreme conditions without a problem...... if i had the peice you had i would weld it and ride with absolute confidence...
Fyi the "extreme"conditions were the tail of the dragon aggresively and 1200+ miles onserious twistys on my summer vacation... i did 3200 miles on that broken triple with no prob.. i was watching it very closely for any movement

You got more guts than I do.  Not sure I would want to do switchbacks unless everything is tip top.  Thanks for the info I will be sure to send it off to get repaired.  Think I will try the laser welding.

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #13 on: August 14, 2012, 07:28:24 PM »
Just some pics and quick video of the bike as it is getting dissembled.

Quick walk around of my 1972 CB750

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #14 on: August 14, 2012, 07:30:00 PM »
More pics.

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #15 on: August 14, 2012, 07:34:21 PM »
more pics

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #16 on: August 14, 2012, 07:36:03 PM »
more pics

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #17 on: August 14, 2012, 07:37:13 PM »
More mud dabbers have they no respect for a man's motorcycle?  All in all I would say it's not a bad second day with everything broken down and bagged and tagged.  I also got out he steering stem races to boot!

Thanks to RobdaRob for his tip on leaving the one bolt in so I can lift the frame off the engine.  Also the CB650 cover I had leftover works great to protect the advance and props the engine up and inch or so making the tilt n' dump even easier.
« Last Edit: August 14, 2012, 07:43:21 PM by chewbacca5000 »

Offline Letze

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #18 on: August 14, 2012, 07:41:48 PM »
No respect for anything man, I had them filling every hole on a used engine block, I pressure washed the crap out of that thing to get those nasty buggers out.

Offline chewbacca5000

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Re: 1972 CB750 Restorathon 18 days straight
« Reply #19 on: August 14, 2012, 07:52:56 PM »
No respect for anything man, I had them filling every hole on a used engine block, I pressure washed the crap out of that thing to get those nasty buggers out.

Yeah right.  No my next challenge is sorting through the tote tomorrow and see whats good and what has to be replaced.

After draining the oil I smelt a fair deal of gas in the oil.  I think this may be responsible for the white smoke I got with the gas in the oil making it pass the rings.  Maybe this engine does not need a rebuild after all?  Not head oil leak.  Only wet spot is near the sprocket and that could be the chain oilier?

The 1 long crack in the frame is another story.  There is a 2 inch long section where the frame is swollen up like a balloon.  A replacement piece going to have to be welded in.

Offline chewbacca5000

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Re: 1972 CB750 Restorathon Day 3 Somone call 911
« Reply #20 on: August 15, 2012, 09:09:42 PM »
After getting everything stripped down yesterday I had a little freakout when I saw a good sized crack about an inch long.  I gave it a harder look and saw something that resembled rheumatoid arthritis with the frame on the left side swollen up.  All I had was a business card that I picked up a welding supply company of a guy I had never met before.  As I was driving to the dinner to meet him it was pouring rain in sheets and all I can think of is how crazy is this?

I get to the dinner and he started showing me a bunch of pictures of other welding projects.  It looked good, but see no motorcycle stuff.  So I am thinking he is just another "trailer welder".  My dad had his trailer welded while function it was not pretty.

I asked him to humor me and he sliced a section of the doner frame and welded it up.  I then had him cut it out and he showed me that there was full penetration.  He said he would have it by Friday and I got a call after work and it was ready at 5PM!  I was super siked.

His name is Nate Bowman and he saved the day for me.  Thanks Nate!

I got my swing arm bushing out so I am staying on track so far.  I nicked inside how I am ok?

Here is a the video of the welding job and some pics of the swing arm.

CB750 Restorathon - Day 3 - Frame 911

Offline chewbacca5000

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Re: 1972 CB750 Restorathon Day 4 Can you say Kerker
« Reply #21 on: August 16, 2012, 08:49:30 PM »
Today was pretty busy, but I did manage to get some cleaning of parts done, engine, rims, and a Kerker exhaust.  Super excited when I stripped the paint and say a useable chrome muffler.  The header need some attention though.  I would like to get it ceramic coated, but this this is practically welded together.  Beating on to dissemble will only wreck it.

Engine cleaned up nicely as did the rims which only have a couple spots of surface rust.  There a a few rusted spoke which I am hoping to have replaced.


Offline Stev-o

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Re: 1972 CB750 Restorathon Day 4 Can you say Kerker
« Reply #22 on: August 16, 2012, 08:52:27 PM »
Way cool!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline tmurt

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Re: 1972 CB750 Restorathon Day 4 Can you say Kerker
« Reply #23 on: August 17, 2012, 03:00:50 AM »
As the former owner and knowing the condition when I turned her over to you, she sure is looking good now - I can't wait to see her finished!

Offline chewbacca5000

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Re: 1972 CB750 Restorathon Day 4 Can you say Kerker
« Reply #24 on: August 17, 2012, 07:30:14 PM »
As the former owner and knowing the condition when I turned her over to you, she sure is looking good now - I can't wait to see her finished!

Everyone please give a warm welcome to Tmurt, the previous owner of the bike I am restoring.  And thank you for giving me the opportunity to bring your baby back to life.

From the moment I saw that 72 750 I knew there was something special about her.  I would not let some rusted chrome bits and pieces throw me for a loop. 

Hondaman is something of a living legend here and responded to my thread about rebuilding the engine.  If you are interested there is some good back and conversation of the pros and cons of rebuilding vs not http://forums.sohc4.net/index.php?topic=111472.0.

Also under the Home link is the search function the one in the upper right hand corner does not work.