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Author Topic: FRANKENHONDA II the 1982 DOHC CB 750F2 Build  (Read 55754 times)

Offline cb250nproject

  • Posts: 328
  • If you can make it better do so
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #520 on: Sep 03, 2018, 23:03:53 »
This bad boy just rocked up in the mail


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

  • Posts: 328
  • If you can make it better do so
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #521 on: Sep 09, 2018, 04:15:11 »
I needed to make a mount for the speed sensor to go, so last Friday I headed down to the old mans workshop and he helped me make one up out of some aluminium he had in the shed

First we had to make the block square, then we made a 1mm slot up the top so the bracket would slide over one of the original mud guard mounting positions.

Then we drilled out the hole for the M6 bolt, and on the underside we made another slot for the speed sensor to sit. We counter sunk the hole so the bolt would sit nice and flush

Next was the fun part polishing it up then mounting it, I like it because it blends in and stands out at the same time.

I think when it comes to the final assembly Iíll polish all the parts the Oldman has made up as theyíre parts that I want to show off the craftsmanship especially the foot peg adapter brackets and soon to be custom top triple ďwatch this spotĒ

Iím not sure if the wiring will get completed this break as Iíve been told by the minister of war and finance that the backyard needs to be partially excavated and Iíve got two days to make that happen. Hopefully tomorrow I have a really good run, either that or it rains and works cancelled I can dream


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Online The Jimbonaut

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  • Posts: 1274
    • Lost Apostle
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #522 on: Sep 09, 2018, 11:42:26 »
Looking sharp man, great work.  How will you be routing the wire from the sensor to the speedo unit?  A friend has the same set up on his CB900 and he has his kinda exposed. 
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline cb250nproject

  • Posts: 328
  • If you can make it better do so
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #523 on: Sep 09, 2018, 18:19:20 »
Looking sharp man, great work.  How will you be routing the wire from the sensor to the speedo unit?  A friend has the same set up on his CB900 and he has his kinda exposed.
Iíll wrap it up with the brake line probably with some of that coil wrap stuff


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline Kunphushun

  • Posts: 23
  • Big Dreams. Small Funds!
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #524 on: Oct 08, 2018, 23:15:26 »
Ive just read through 53 pages of amazing dedication and perseverance.  This is an awesome build!  I cant wait for an update! You're a mad man, and very skilled at it.
Lurker and dreamer.  Maybe one day Ill start on my bike.

Offline cb250nproject

  • Posts: 328
  • If you can make it better do so
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #525 on: Oct 14, 2018, 08:41:37 »
Ive just read through 53 pages of amazing dedication and perseverance.  This is an awesome build!  I cant wait for an update! You're a mad man, and very skilled at it.

Cheers, sheís been a journey, hopefully this break I can get my ass into gear and make some serious ground.

Lol Iíve always prided my self on being a skilled madman, Iím still working on the whole skilled mechanic side of things but.


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

  • Posts: 328
  • If you can make it better do so
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #526 on: Oct 31, 2018, 02:12:05 »
So in preparation of getting work done to the head and cylinders I pulled the motor out.

Luckily for me one of my mates came over for lunch and while we were in the garage talking bikes offered to help me drop the motor out. I must say after doing it by myself last time, I highly recommend doing it with someone to assist. Engine out in 25 mins and thatís while we were having a conversation about best options for his next bike.

In addition to this I realised that the OEM R6 rear break switch and bracket didnít fit into the housing because of the adapter bracket we had made previously to mount the rear sets. So I went about making one up.

I ended up just using a rubber Gromit in the hole that the fastening bolt goes through just so it wouldnít rattle loose.

Now back to the garage to separate the cylinders and head so I can take it to the shop tomorrow.


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

  • Posts: 328
  • If you can make it better do so
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #527 on: Oct 31, 2018, 04:30:44 »
Well the cams are out and all the required nuts and bolts have been removed, but Iím struggling to remove the cylinders from the bottom end. Iíve come to a roadblock so Iím off to google and YouTube removing stubborn cylinders


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

  • Posts: 328
  • If you can make it better do so
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #528 on: Oct 31, 2018, 06:26:45 »
Well after a lot of tapping with a rubber mallet the head finally came off.

Unfortunately due to my poor accuracy I managed to damage 3 fins. A little upset but theyíre much harder to re attach than they are to knock off so I think Iíll just have to get use to it.

Still unable to budge the barrels so Iíll have to have another crack at it in the morning.


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline LightsOut

  • Posts: 70
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #529 on: Oct 31, 2018, 11:42:44 »
Bummer with the fins. I have one missing as well but havenít found any good DIY way of replacing... Best of luck getting those stubborn cylinders out. No tips other than heat, penetrating oil and blunt force :)


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