Author Topic: K8 Highway Racer - Finished  (Read 30039 times)

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Offline JoeCooley

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Re: CB750 K8 Highway Racer - Updates
« Reply #100 on: December 27, 2017, 09:11:30 PM »
Well my stickers came in from France. The shocks look much nicer now. Finally finished with that part of the build.
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78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline JoeCooley

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Re: CB750 K8 Highway Racer - Updates
« Reply #101 on: December 30, 2017, 09:27:00 PM »
Tarozzi rear-sets DONE! The brake side was a pita! 😲
If this doesn't work out I'm just going to get a cable setup.

Next up: Clutch replacement and modification as per Mr. Hondaman.

Happy Year everyone!
-Joe
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78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline seanbarney41

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Re: CB750 K8 Highway Racer - Updates
« Reply #102 on: December 30, 2017, 10:26:16 PM »
you got that set up really weird...does it work good?  Here is mine, works good...
DSCN0944 by Sean Barney, on Flickr
« Last Edit: December 30, 2017, 10:30:41 PM by seanbarney41 »
If it works good, it looks good...

Offline JoeCooley

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Re: CB750 K8 Highway Racer - Updates
« Reply #103 on: December 30, 2017, 10:43:58 PM »
you got that set up really weird...does it work good?  Here is mine, works good...
DSCN0944 by Sean Barney, on Flickr

Yes it works well. It took a lot of trial and error to make it all fit and work correctly. I have a K8 so the bolt on kits don't work. Also, I can't  go above like you did because the rod will hit the swing-arm nut. Luckily Cognito Moto sells brackets and other bits to make it happen. I may shorten the lever a bit to make packaging easier and clean it up a bit.
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline JoeCooley

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Re: CB750 K8 Highway Racer - Updates
« Reply #104 on: December 31, 2017, 12:07:53 PM »
New clutch time! I've had these parts for like a year.... Finally get to it...
« Last Edit: December 31, 2017, 12:09:34 PM by JoeCooley »
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78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline JoeCooley

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Re: CB750 K8 Highway Racer - Updates
« Reply #105 on: January 03, 2018, 08:01:02 PM »
Some new parts showed up...
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline BPellerine

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Re: K8 Highway Racer - Nobody cares? 🤔
« Reply #106 on: January 04, 2018, 10:10:16 AM »
some good parts,I have one of those cams,havent tried it yet,but it kissed the pistons in a stock engine,maybe contact cyclex about milling the pistons down?
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Offline JoeCooley

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Re: K8 Highway Racer - Nobody cares? 🤔
« Reply #107 on: January 04, 2018, 10:23:32 AM »
some good parts,I have one of those cams,havent tried it yet,but it kissed the pistons in a stock engine,maybe contact cyclex about milling the pistons down?

Do you know any of the specs for the cam? I can't find anything on Google.
The valve reliefs are huge on these pistons. I doubt I will have any contact.

Yes, I should contact them. Maybe they will know how much I should take off it I want to lower the scr.
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline BPellerine

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Re: K8 Highway Racer - Nobody cares? 🤔
« Reply #108 on: January 04, 2018, 06:07:00 PM »
some guy on here contacted crane cams and got the specs for one of there other cams maybe they can supply you with info,I was not thinking you would have contact with those pistons,just knew it had a little too much lift for stock pistons,hope you can get the cr down.
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Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #109 on: January 12, 2018, 07:39:18 PM »
I contacted Crane's tech line. They said they will research it for me and email if they found anything... A week later and no word... So yeah.

On a positive note, I'm almost done with the rewire and new bar controls. I fired it up on starting fluid! So I know the coils are working and most of the bike is wired correctly. I went to a K1 harness and minimalist early style bar controls. Everything works except the signals. I think it's a simple fix but who knows. I have to probe the switch and check for power and see if it is even functioning. It's a cheap repop.

Also, some of new go fast parts showed up. So far I have the pistons, crane cam, CX Super rods, RC red retainers, and some stock rocker parts. Thinking about sending my gears off to be undercut.
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78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #110 on: January 16, 2018, 01:06:59 PM »
Everything works except the signals. I think it's a simple fix but who knows. I have to probe the switch and check for power and see if it is even functioning. It's a cheap repop.
Check if your harness has the signal power being supplied from the TURN SIGNAL RELAY. On many models (I don't know the K8 well) power comes to the LH pod on GREY.
I found the problem! It was just a missing spring on the little contact in the switch which I forgot to put in on reassembly. Stupid mistake that cost me an hour of diag to find. Oh well, it's good now. Haha

So Phase ll is nearing an end. The bike is looking much better now and everything seems to work electrically. I can't wait to ride this thing and see how she handles. 👍😎
« Last Edit: January 16, 2018, 04:38:42 PM by JoeCooley »
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Offline SKTP

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Re: K8 Highway Racer - Updates!
« Reply #111 on: January 16, 2018, 01:20:57 PM »
Looking good! What Wiseco pistons did you go with (assuming you have a 1978K head)? I am thinking of getting Wiseco 863cc pistons and and trying to figure out if the 78K uses the F style of the 69-76K style...I think F, but I need to do more research
1978k rebuild thread http://forums.sohc4.net/index.php?topic=68423.0
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Offline Stev-o

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Re: K8 Highway Racer - Updates!
« Reply #112 on: January 16, 2018, 02:13:32 PM »
Looks fantastic!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #113 on: January 16, 2018, 04:48:53 PM »
Looking good! What Wiseco pistons did you go with (assuming you have a 1978K head)? I am thinking of getting Wiseco 863cc pistons and and trying to figure out if the 78K uses the F style of the 69-76K style...I think F, but I need to do more research
Thank you. My current build is a bit of a mutt. CruzinImage flat top 65mm pistons, 72k cylinders, 72k cam, 75 F1 Head, Kimble white springs. I had 3 angle valve job done and springs & seals replaced.

The 78k Head is supposed to be similar to the F1 head. The F2 got the change in combustion chambers. I have my old 78K head laying around and it looks pretty much like the F1.

Looks fantastic!

Thank you Stev-o! It means a lot coming from you. Your bikes are all very nice. This bike isn't perfect in any way. It does however remind me of a track worn 70s racer with modern updates... That's kinda the look I'm going for....

Cheers Guys!
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline SOHC4 Cafe Racer Fan

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Re: K8 Highway Racer - Updates!
« Reply #114 on: January 16, 2018, 08:04:20 PM »
Looks good, Joe.  Ride it like you stole it!
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 JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #115 on: January 16, 2018, 09:22:32 PM »
Looks good, Joe.  Ride it like you stole it!
Thanks Don! Oh, I plan to ride $hit out it!!!

Seat pan is started. Just taped it up with packing tape and masking tape. I might lay the first layer of glass tonight. Kinda tired tho and I have to be up at 0500...
« Last Edit: January 16, 2018, 09:29:10 PM by JoeCooley »
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78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #116 on: January 20, 2018, 10:39:56 PM »
I spent today laying fiberglass. I have 5 layers of woven fiberglass. I will pop the mold tomorrow and clean it up. It should be good and strong.
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #117 on: January 31, 2018, 10:18:04 PM »
Ok so the seat pan is done. I finished trimming it and dropped it off at an upholstery shop today. It's going to cost a little more than I expected but the shop is highly recommended and produces quality work. I'm excited to see how it turns out. I've never had a real seat on this bike and this is also the last piece of the puzzle for Phase II of this bike.
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #118 on: January 31, 2018, 11:12:30 PM »
I also picked up some cool finned covers off my friend Ted (Ricky_racer). He has tons of really cool parts (unobtainium) for these bikes that are for sale. Shoot him a pm or email with your needs.

So yeah, on with the pics... haha
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline SOHC4 Cafe Racer Fan

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Re: K8 Highway Racer - Updates!
« Reply #119 on: February 01, 2018, 08:57:15 AM »
I also picked up some cool finned covers off my friend Ted (Ricky_racer). He has tons of really cool parts (unobtainium) for these bikes that are for sale. Shoot him a pm or email with your needs.

So yeah, on with the pics... haha

Ted has a treasure trove of goodies.  A regular Bill Benton of Southern California.
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 JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #120 on: February 10, 2018, 04:26:56 PM »
I also picked up some cool finned covers off my friend Ted (Ricky_racer). He has tons of really cool parts (unobtainium) for these bikes that are for sale. Shoot him a pm or email with your needs.

So yeah, on with the pics... haha

Ted has a treasure trove of goodies.  A regular Bill Benton of Southern California.

For sure and he's a great guy!

Update: The seat is back from Mark Luhr. http://www.customupholstery.net/
He did an amazing job and is a real craftsman. Not cheap but very nice quality and worked with me the entire time to ensure that I would be happy with the finished product.

A couple pics attached. It's almost time for glamor shots. I have to ride it and find a good background.
« Last Edit: February 10, 2018, 04:43:01 PM by JoeCooley »
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #121 on: February 10, 2018, 07:08:20 PM »
Some Moose Racing plugs and a Pingel Power-Flo petcock. Anybody ever use these plugs? They came from Cognito Moto.
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #122 on: February 10, 2018, 11:53:37 PM »
Here's a couple glamor shots from the garage.
« Last Edit: February 10, 2018, 11:55:33 PM by JoeCooley »
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline JoeCooley

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Re: K8 Highway Racer - Updates!
« Reply #123 on: February 11, 2018, 12:03:59 AM »
So the first test ride went sorta well. The new rear shocks ride much better than the #$%*ty emgos it had. She ran like a scalded dog!
 
That is until an intermittent ignition problem reared its ugly head again. I think either the dyna s has taken a #$%* or my coils are on their way out. Seems to run great until it gets warm and then it starts missing real bad. Sometimes it'll pick right up and start hauling ass again, othertimes not so much.

Anyone have some coils laying around so I can test my theory?
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline SOHC4 Cafe Racer Fan

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Re: K8 Highway Racer - Updates!
« Reply #124 on: February 11, 2018, 10:46:32 AM »
The seat looks great.

Make sure to check your wiring to the coils and move the wires as you test to make sure there are no internal breaks in the wires. 
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