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Author Topic: '78 CB750K Cafe Build - Money Pit!  (Read 25005 times)

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Offline Restoration Fan

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Re: '78 CB750K Cafe Build - Trials and tribulations
« Reply #75 on: March 15, 2015, 11:37:46 AM »
Those carbs and velocity stacks look sexy!  Really nice job on the carbs.
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Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline SOHC4 Cafe Racer Fan

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Re: '78 CB750K Cafe Build - Trials and tribulations
« Reply #76 on: March 15, 2015, 11:53:25 AM »
I  do love the look of velocity stacks, and I've run them on my 750, but make sure to cover them when not in use, and to avoid riding in dusty or wet (rain) environments. 
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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 callmejarob

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Re: '78 CB750K Cafe Build - Trials and tribulations
« Reply #77 on: March 18, 2015, 12:06:32 PM »
I will add foam inserts to the stacks as well to help with restricting the flow somewhat. 

I received all of my bolts back from zinc plating today finally and it was worth the wait!  They look GREAT!!!

Now I can plastigage the crank bearing shells tonight and get it together!



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Offline Wredas

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Re: '78 CB750K Cafe Build - Trials and tribulations
« Reply #78 on: March 18, 2015, 02:16:59 PM »
You've done an amazing job on this bike. The parts look great, I can't wait to see it done.
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Offline callmejarob

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Re: '78 CB750K Cafe Build - Trials and tribulations
« Reply #79 on: March 18, 2015, 02:32:42 PM »
Quote from: Wredas on March 18, 2015, 02:16:59 PM
You've done an amazing job on this bike. The parts look great, I can't wait to see it done.

Thanks!

I'm trying to take my time and make this bike perfect in my eyes.  Compared to all the amazing bikes on this site I feel like I've got a long way to go so it is much appreciated to hear that!
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Offline callmejarob

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Re: '78 CB750K Cafe Build - Trials and tribulations
« Reply #80 on: March 19, 2015, 06:06:55 PM »
Alright, so I have this random little dowel pin that I have no clue where it goes, and then only one of the large pins so I am missing one large one it looks like.  Other than that, I believe I am ready to put the cases together.

Can anyone help me figure out the dowel pin situation?! 

Here is one of the big ones I'm referring to:


Here is the empty spot on the other side where I need one it looks like:


And this is the smaller one that was with my crank case supplies and I have no idea where it goes:


Let get this figured out so I can move along, its getting very exciting!

Ordered my electronics tray and new kickstand today so that I can modify my frame all at once.  Once those come in I will de-tab and chop the frame, weld seat hoop, weld new kickstand, weld seat attachments, and attach new oil tank and electronics tray and get it all painted.
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Offline danyo

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #81 on: March 19, 2015, 06:17:29 PM »
Small one are used in one of the side covers ( clutch, generator, shifter) and also in rocker towers and rocker cover. You dont need small ones between cases.
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Offline callmejarob

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #82 on: March 19, 2015, 06:21:50 PM »
Quote from: danyo on March 19, 2015, 06:17:29 PM
Small one are used in one of the side covers ( clutch, generator, shifter) and also in rocker towers and rocker cover. You dont need small ones between cases.

Awesome I should have known that thank you!  Now do I NEED that large dowel/is there one there
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Offline Restoration Fan

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #83 on: March 19, 2015, 06:25:35 PM »
Quote from: callmejarob on March 19, 2015, 06:21:50 PM
Quote from: danyo on March 19, 2015, 06:17:29 PM
Small one are used in one of the side covers ( clutch, generator, shifter) and also in rocker towers and rocker cover. You dont need small ones between cases.

Awesome I should have known that thank you!  Now do I NEED that large dowel/is there one there

Yes, you need both of the large dowels for when you put the case together.  It's not that oil is flowing through it or anything, but they're alignment guides that make sure the 2 cases go together aligned.
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Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline callmejarob

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #84 on: March 19, 2015, 06:26:31 PM »
As much as I don't want to wait for it, I found them and ordered one.  Thanks!
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Offline Restoration Fan

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #85 on: March 19, 2015, 06:41:29 PM »
I had an extra one at one point that I had gotten from Bill Benton.  I was pretty sure I returned it to him when I found my second one.  I just went and confirmed that indeed I did return it to him.  Otherwise, it was going to be yours.  Sorry.
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Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline callmejarob

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #86 on: March 20, 2015, 03:54:30 PM »
DFW Honda had the dowels in stock so I went and picked up two today!  Everything has been triple checked for the crankcase and will be assembled tomorrow.  Engine should be finished soon!  I am waiting on a few pieces to get back from plating though..
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Offline callmejarob

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #87 on: March 26, 2015, 07:52:58 AM »
I got the cases together with no issues last weekend, transmission still shifts like butter!  Started installing the studs but some were having trouble going in so I'll clean the threads again, for the 4th time.. 

Most likely this bike will be going on a bit of a break soon, I've invested most of my money in my business this week and might have to wait 3-4 months to order the rest of the parts needed :(
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Offline Restoration Fan

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Re: '78 CB750K Cafe Build - Questions!!
« Reply #88 on: March 26, 2015, 08:19:33 AM »
Quote from: callmejarob on March 26, 2015, 07:52:58 AM
I got the cases together with no issues last weekend, transmission still shifts like butter!  Started installing the studs but some were having trouble going in so I'll clean the threads again, for the 4th time.. 

Most likely this bike will be going on a bit of a break soon, I've invested most of my money in my business this week and might have to wait 3-4 months to order the rest of the parts needed :(

Jarob,
We've all been there.  These bikes seem to take more money than anticipated when you're restoring or modifying them.  I know we doubled our original estimate of cost.  And there were many items we would have liked to purchase earlier but had to wait for cash flow reasons. 

Glad to hear the cases are back together.  Now just have to get those studs in so you can get cylinders, rings, head etc all buttoned back up.
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Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline callmejarob

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #89 on: March 29, 2015, 06:25:35 PM »
Hey I've got a question.

I FORGOT TO REPLACE THE OIL SEALS! 

So I have to old oil seals on the crank, etc. still but have these fresh new oil seals sitting in a bag on my work bench.

Is it worth tearing the cases back down to replace them?
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Offline callmejarob

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #90 on: March 30, 2015, 01:45:46 PM »
Mods vs Rockers this weekend, wish I could have joined!






The fiat all cleaned up at the "shop"


Honing could not have been easier



Waiting on a new base gasket, I might have ripped mine....


And my new custom alloy fender to replace that old giant.




Still debating if I want to crack open the cases again to replace the crank oil seal...
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Offline SOHC4 Cafe Racer Fan

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #91 on: March 30, 2015, 01:48:31 PM »
I haven't seen that honing attachment.
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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 SKTP

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #92 on: March 30, 2015, 02:03:34 PM »
WOW! who did your head and how much?
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Offline callmejarob

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #93 on: March 30, 2015, 02:48:18 PM »
Quote from: CB750 Cafe Racer Fan on March 30, 2015, 01:48:31 PM
I haven't seen that honing attachment.


Really?!

It's a flex hone, you order just the right size for your cylinders so that you really dont have to worry about over honing.

http://www.mscdirect.com/browse/tn/Abrasives/Laps-Hones/Hones/Flexible-Hones?navid=12100209

Drill it up and down for about 20 seconds and done.

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Offline callmejarob

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #94 on: March 30, 2015, 02:50:19 PM »
Quote from: SKTP on March 30, 2015, 02:03:34 PM
WOW! who did your head and how much?


The Vapor Blasting?  The head alone would only be about $50

Dan at Vapor Blasting Solutions : vaporblastsolutions@gmail.com

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Offline SOHC4 Cafe Racer Fan

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #95 on: March 30, 2015, 02:53:33 PM »
Quote from: callmejarob on March 30, 2015, 02:48:18 PM
Quote from: CB750 Cafe Racer Fan on March 30, 2015, 01:48:31 PM
I haven't seen that honing attachment.


Really?!

It's a flex hone, you order just the right size for your cylinders so that you really dont have to worry about over honing.

http://www.mscdirect.com/browse/tn/Abrasives/Laps-Hones/Hones/Flexible-Hones?navid=12100209

Drill it up and down for about 20 seconds and done.

No, I haven't done the machining/valves/porting myself on any of my bikes.
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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 callmejarob

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #96 on: April 01, 2015, 07:52:15 PM »
Spend a good 2+ hours today splitting the cases again and replacing the oil seals, got it all bolted back up and will work on the cylinders this weekend. 
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Offline callmejarob

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Re: '78 CB750K Cafe Build - Slowing down.
« Reply #97 on: April 06, 2015, 07:42:03 AM »
The guilty oil seals, glad I decided to replace them they are hard and worn.


Im practicing the old "use your fingernails and go slowly" method


Getting closer...


Piece of cake!


This valve spring compressor was surprisingly easy to use


And that was my Easter Sunday!



I lost the pin that holds the cam chain guide in place so I couldnt button her up just yet.  A new one is on the way!

Also put an offer on a house this weekend that has a NICE garage and shed, Ill find out today!
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Offline Restoration Fan

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Re: '78 CB750K Cafe Build - Money Pit!
« Reply #98 on: April 06, 2015, 07:46:27 AM »
Awesome!  Nice job on the piston install. 
And good luck on the house.  Makes all the difference in the world having a place where you can just go in the garage/shed/downstairs and work on the bike for a few minutes at a time. 
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Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline SOHC4 Cafe Racer Fan

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Re: '78 CB750K Cafe Build - Money Pit!
« Reply #99 on: April 06, 2015, 08:45:52 AM »
Great job on the pistons and valves.  Pretty damn awesome.
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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
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