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Author Topic: 1978 750F The start of a big project.  (Read 16008 times)

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #75 on: June 16, 2017, 02:24:53 PM »
Im heating and cooling now.  Trying to be patient. 

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #76 on: June 16, 2017, 02:44:13 PM »
Successfully removed.

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #77 on: June 16, 2017, 02:45:14 PM »
Sorry  Cal... no welding!  😔

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #78 on: June 16, 2017, 06:06:26 PM »
Good question.  Well i guess im just going to get three new ones and just thread them in.  They came up just fine.  When i said they were welded in, i just ment they were very tight.  I could tell i was going to break something.

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #79 on: June 17, 2017, 01:20:39 PM »
****BREAKING NEWS****

South Carolina man kills family dog with motorcycle brake.

Cal.. your abilities for welding are only exceeded by your skills as a writer.  Your imagination, I'll have to admit, is top notch.  You had me believing it right up to "Film at 11:00.  I realized this because it's video these days.

Very funny, dude!
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Offline kmb69

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Re: 1978 750F The start of a big project.
« Reply #80 on: June 17, 2017, 02:08:58 PM »
That was pretty damn funny!  ;D  ;D
Good one Cal, I laughed my a$$ off!  ;D  ;D
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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #81 on: June 24, 2017, 08:44:46 AM »
Breaking news.....
I used air to release the stuck pistons in the front calipers.  Welded up a fitting to thread in the banjo bolt hole.   150 psi.  Didn't budge.

Added heat to the process.  Still didn't move.  I gently put a pair of pliers on the piston to wiggle it.  Had a block of hard wood in there for safey.  Wouldn't want to be unsafe! 

Pop.... pinned the piston to the block of wood.  Success!  Blead the pressure off. Removed the block and started adding the pressure slow, a litte more wigging and it came out with a hissss.  Second one went the same way.

No pets were harmed in the the process...cal.

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #82 on: June 24, 2017, 11:36:36 AM »
Thanks for the support.  That's the third time in as many days I've heard that.  I'm starting to get a complex. 😩

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #83 on: August 06, 2017, 06:27:59 AM »
Got the motor back in today.  Went pretty easy. 

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Offline MauiK3

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Re: 1978 750F The start of a big project.
« Reply #84 on: August 06, 2017, 09:16:42 AM »
I have pitting on my K3 forks too, I struggled with trying to save them but noticed the lower ends were very worn from poor fork oil maintenance. I gave up and ordered new tubes from Yamiya yesterday.
I don't think I'm ever going to add up the receipts for my project.
Your motor and frame look great. I hope mine turns out as well.
Aloha
Steve
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1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #85 on: August 06, 2017, 10:03:59 AM »
I'm on the hunt for new lubes.  I like the lowers.

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #86 on: August 06, 2017, 10:06:19 AM »
I haven't even put oil in there.  Cuz as soon as you sell me yours , im changing them out.

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #87 on: August 06, 2017, 02:08:56 PM »
MauiK3.... forget about the totals on parts.  Just think about how much the bill would be if you charged yourself for your labor. 

Were did yoi say you got new tubes from?

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Offline MauiK3

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Re: 1978 750F The start of a big project.
« Reply #88 on: August 06, 2017, 02:50:46 PM »
Yamiya, I've purchased a lot of stuff from them, quality is excellent, lots of NOS, things you can't find easily. Shipping is a little high from Japan but they are great. I try to consolidate shipments to lower shipping. They even have two really cool CB750 tshirts.
This is a labor of love so I try to ignore the cost.
They have very nice pre-painted tank and body sets, I got myself a candy blue-green set, paint is awesome.
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1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #89 on: August 06, 2017, 02:52:17 PM »
Cool.  Thanks for the reply.  I'll check them out.

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Offline SOHC4 Cafe Racer Fan

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Re: 1978 750F The start of a big project.
« Reply #90 on: August 06, 2017, 05:12:11 PM »
Forking by Frank will supply you with better than stock chromed fork tubes.  Frank is super old school.  You call and send him a check with your order on paper and he ships your forks to you.  No internet or email ordering.
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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 Jnel

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Re: 1978 750F The start of a big project.
« Reply #91 on: August 20, 2017, 05:53:43 AM »
Got the motor back in.  Did some photoshop work to see what its going to look like.tank, back end and pipes. Yes... back end is too long...

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #92 on: August 20, 2017, 06:10:09 AM »
Delkevic pipes are what the budget allows.

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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1978 750F The start of a big project.
« Reply #93 on: August 20, 2017, 10:55:08 AM »
I went with the shorter Delkevic muffler for that reason. Picture is in the Reunion blog if interested. We gassed up the freshly installed Weber carbs through the 2 open fuel lines without installing the tank just to see if it would fire with the Webers. I didn't have it running enough to truely judge whether I like the sound or not. It is quieter than I expected after spoking with the Delkevic guy but that is an easy fix.  ;D Ofreen should be posting up a first firing video soon.
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #94 on: August 20, 2017, 11:56:28 AM »
You don't miss a trick.  Was on the bike jack

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #95 on: August 20, 2017, 11:58:03 AM »
I air photoshoped that out.  You noticed the seat no dought.

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #96 on: August 20, 2017, 12:06:06 PM »
Quote from: Jerry Rxman Griffin aka MuthaF'er on August 20, 2017, 10:55:08 AM
I went with the shorter Delkevic muffler for that reason. Picture is in the Reunion blog if interested. We gassed up the freshly installed Weber carbs through the 2 open fuel lines without installing the tank just to see if it would fire with the Webers. I didn't have it running enough to truely judge whether I like the sound or not. It is quieter than I expected after spoking with the Delkevic guy but that is an easy fix.  ;D Ofreen should be posting up a first firing video soon.
Im ok with a little on the quiet side.  I also ride a 15 ultra classic and it has stock exhaust.  I take a razzing over that.  What can i say.... i like to be able to hear stuff and not have it blown out by the pipes. I feel in love with the 4 into 4 stock pipes on my first 72 750.  Its one of the reasons i bought the bike back then.  But i can pull some of the baffels if i feel the need.

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Offline Mike-Quebec

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Re: 1978 750F The start of a big project.
« Reply #97 on: August 24, 2017, 06:20:39 AM »
Great progress! Looking good so far! That's some inspiration for my cb750F 1975's rebuild!!
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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #98 on: August 24, 2017, 07:48:02 AM »
After and before.   I was not in love with the locking lid on the F seres.  Decided to remove it.  I put in the new bung and metal.  Welded it all in.  What a pain.  Im not showing the weld job.  Cal....  not showing the weld job!

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Offline Jnel

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Re: 1978 750F The start of a big project.
« Reply #99 on: August 24, 2017, 07:58:33 AM »
Oh yes... i blasted the inside.  Very easy on that.  That stuff is so thin.  I used this stuff for 24 hours.  Did a great job.  I used 1 gallon and kept rolling it around.  For some reason i think it worked better when there was more air in the tank.  It looked almost new.  But... i fould a bunch of pin holes.  Mostly at the seams.  That was fun.  More welding. 

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