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Author Topic: 79' DOHC CB750 Canadian Build  (Read 1187 times)

Offline CrabsAndCylinders

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Re: 79' DOHC CB750 Canadian Build
« Reply #10 on: Nov 25, 2017, 17:58:09 »
I'm subscribed :)
Lighter, Quicker, Faster.
ZX-14, 900F x 2, 1100F, R100, CBR600, SR500, GT500, RZ350, KZ1000 x 2, Moto Guzzi Lemans lll, CBX550, RD 350, 750 SOHC police special, RG250, TL1000R, GT750, KTM Super Duke 1290 R, Harris/Z-1, Norton 750 Commando, Green 77 KZ650

Offline Nust

  • Posts: 13
Re: 79' DOHC CB750 Canadian Build
« Reply #11 on: Dec 05, 2017, 10:44:27 »
Not much to update on the 79 as some repairwork got done to then MK1 in the way of a new R/R after the last one died and left me on the side of the road.  I did finalize the m-unit housing and will wait to weld it into place once Iíve mocked up the electrical to determine The size of the holes it will need cut in it.  Also I welded the tail section up and I did get a chance to chop up the front fender. To be honest Iím having an internal debate about the length, part of me wants it shorter and the other part debates even having it if it is much shorter. Regardless if it stays it wonít be staying chrome. Anyways let me know what you guys think about itís length.
« Last Edit: Dec 05, 2017, 10:46:02 by Nust »

Offline cxman

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Re: 79' DOHC CB750 Canadian Build
« Reply #12 on: Dec 05, 2017, 18:29:02 »
check your rotor resistance if its out of spec it will over heat the rr
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others

Offline Nust

  • Posts: 13
Re: 79' DOHC CB750 Canadian Build
« Reply #13 on: Dec 05, 2017, 21:55:44 »
Wasn't on the Cb was on my GSXR build, relocated the R/R to a slightly questionable area for heat and proved to be rightly worried, overheated the unit and killed it.  Had to relocate it to an area that's a little more exposed then I would like but will guarantee it stays plenty cool.  I understand the R/R on these CB's need to be swapped out for newer models to accommodate newer Lithium Ion batteries, can anyone attest to that?  Also has anyone ever run an 8 cell anti grav on a 750 with elect start without any issue?

Offline TheCoffeeGuy

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Re: 79' DOHC CB750 Canadian Build
« Reply #14 on: Dec 06, 2017, 10:10:46 »
I run a Shorai 8 cell on my 1980 GS850 with no issues.   4 years going now.
www.thecoffeeguy.ca Not your ordinary Blog site.

1968 Harley Aermacchi ML 125 Rapido, restored
1972 Honda Cl 450 engine rebuild, a day rider soon, now sold
1980 Suzuki GS850GL Street Brat  My other day bike
2000 Harley 1200 Sport S My day bike
1982 Honda CB650 Chopper light

Offline Integra99

  • Posts: 57
Re: 79' DOHC CB750 Canadian Build
« Reply #15 on: Dec 06, 2017, 12:22:46 »

Looks cool.. maybe its the photo but the seat and hoop look quite long.. are you planning to run a racer hump of a flat seat.

Nice colour on the GSXR, is that Audi Nardo Grey? I want to do my CB400f in a similar colour!

Offline cxman

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Re: 79' DOHC CB750 Canadian Build
« Reply #16 on: Dec 06, 2017, 13:00:17 »
i dont know of a mofset you can use on the dohc

the reg/rectifier on a dohc and cb650 sohc also control the electromagnetic rotor 
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others

Offline Nust

  • Posts: 13
Re: 79' DOHC CB750 Canadian Build
« Reply #17 on: Dec 06, 2017, 18:57:26 »
The grey colour is actually a dodge colour called ďanvil greyĒ I really like it too and get a lot of questions about it.

Good to know about the shoerai batter Iíll likely give the antigravity 8 cell a shot, the smaller the better.  Iíll be fabricating a box for it this weekend along with a seat pan and then itís on to foot controls.

The seats about 22Ē from tank to tip of the hoop, wanted it to sit two without being to tight. The seat will be a flat brat type.

Once again thanks for the interest and info everyone.

Offline Integra99

  • Posts: 57
Re: 79' DOHC CB750 Canadian Build
« Reply #18 on: Dec 07, 2017, 06:28:21 »

I saw a car on Bitchin Rides last night done in Porsche grey (a new colour) looked similar but certainly the route for my CB400f, its in primer at the moment!

Understand with the seat.. I'm in the same position as wish to carry a passenger on this bike.. I've shortened it a little so hopefully she will fit ha ha!


Offline Nust

  • Posts: 13
Re: 79' DOHC CB750 Canadian Build
« Reply #19 on: Dec 07, 2017, 11:57:37 »
Thatíll look great in that grey. I gotta make sure my wife fits after removing the tail on the MK1 altogether.  Keep up the goodwork. Iíll post some more updates over the weekend as Iíll be working on it again.