KZR's Bikes of the Month for 2024

1978 KZ750 Twin B3 that used to be a off road bike

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02 Dec 2015 09:41 - 02 Dec 2015 10:03 #701558 by Timbox
Well, I picked this up a few weeds ago and thought I had better start a little progress tracking. I fell in love with the fact that there are not that many KZ750 Twins in my area, I don't think I have ever seen one on the road. The second thing was the exhaust, yes it is ugly but different none the lest.

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The bike was found in a foreclosure property and has no key or title. Looked like most of the bike was there and after checking to see if the motor was seized (it was free) I picked her up.

The bars and the skid plate are different, plate is a heavy beast.

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Long time shade tree wrencher
KZ750 B3 (current Project)
03 B12S
09 KLR650
86 FJ1200
ZX14 (sold)
ZRX1200R (sold) Best bike I have ever owned, need another one
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Last edit: 02 Dec 2015 10:03 by Timbox.

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02 Dec 2015 09:45 - 02 Dec 2015 10:12 #701562 by Timbox
The carbs were not in that bad of shape. The tank on the other had was in ruff shape but not as bad as I have seen on some older bikes. I used YouTube and fond a site that showed how to use a battery charger and a anode to remove the rust and change the rust in the tank to a workable surface. I had to rig it that way to fake out the charger, placed the batter and the tank in the charging ckt.

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Long time shade tree wrencher
KZ750 B3 (current Project)
03 B12S
09 KLR650
86 FJ1200
ZX14 (sold)
ZRX1200R (sold) Best bike I have ever owned, need another one
Attachments:
Last edit: 02 Dec 2015 10:12 by Timbox.

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02 Dec 2015 10:00 #701570 by Timbox
Replied by Timbox on topic Starter cluch was next
Starter clutch was out as with most of these older bike, I had a older V65 Magna that the same thing had happened. The KZ Twin broke one of the three pins and the springs were either broken or rusted away. Parts are in the mail, but that is a good thing as I had found a place were all kinds of oil had packed up.

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After cleaning off the area and really taking a good look, seems that the bike had a chain brake or malfunction and broke out a part of the cover. One of the PO's tried to plug it with some type of caulk or something. Took the part off today and cleaned it all up. Was thinking of having a TIG weld done but I think with how close the rubber is that might not be a good idea. Sense there is really no presure in that area I am trying the old JB weld to see if that will hold.

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Long time shade tree wrencher
KZ750 B3 (current Project)
03 B12S
09 KLR650
86 FJ1200
ZX14 (sold)
ZRX1200R (sold) Best bike I have ever owned, need another one
Attachments:

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02 Dec 2015 10:01 #701571 by 650ed
Welcome aboard! That exhaust is pretty bad, but you can take comfort in knowing there was one member here who's KZ750 twin's exhaust was worse; much worse, and he did it on purpose. :laugh: :laugh: :laugh: Ed

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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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02 Dec 2015 10:28 #701583 by missionkz
Replied by missionkz on topic Took off the gas tank and took the carbs apart
And I have an extra set of pipes for a KZ750 twin that I need to sell.

Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado

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02 Dec 2015 14:04 #701612 by Bowman
No really? Including the cross member thingy?

Honda 55 Trail don't ask me what year, 65? (sold)
79 Yamaha XS400 (sold)
76 KZ750B Twin (project)
72 Honda CT70 (project)

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02 Dec 2015 14:13 #701614 by redhawk4
I think that has the makings of a cool bike. The exhausts are hideous, but the basic idea is there and it could be altered and improved quite easily and then some paint or coating could transform it.

1978 KZ1000A2 Wiseco 1075 kit
1977 KZ650B1
1973 Triumph Tiger TR7V
1968 BSA Victor Special 441
2015 Triumph Thunderbird LT
1980 Suzuki SP400

Old enough to know better, still too young to care

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02 Dec 2015 14:46 #701619 by TexasKZ
I'm thinking a 750 scrambler would be way cool. I bet Jemco would make some high pipes for it.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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02 Dec 2015 15:45 #701631 by razmo99
Seems like the makings of a cool project good Luck ;)

- Z500 B4
-GPZ900R A9-10 ish

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03 Dec 2015 02:36 #701675 by TexasKZ
What did you use for solution when derusting the tank?

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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03 Dec 2015 04:30 #701680 by Timbox
Replied by Timbox on topic Sodium Carbonate
I have tried different tank seal kits in the past and with the ethanol gas here in Wisconsin, I fear it will fail. So I found a link that more or less walks you though the process:



I had a issue with my battery charger/maintainer, so I had to trick it and put a battery in the Ckt. If you have some of the older chargers I would guess it would work just hooking it up to the tank like the video shows.

This works great and I will use this treatment before I try a sealing kit. I am sure some of the kits work great but with how well this works, ease of use with no harsh chemicals, I like it.

The Arm and Hammer laundry detergent has the Sodium carbonate. Just make sure you measure out how much water your tank will hold, mix up the Sodium carbonate in a container very well.

Long time shade tree wrencher
KZ750 B3 (current Project)
03 B12S
09 KLR650
86 FJ1200
ZX14 (sold)
ZRX1200R (sold) Best bike I have ever owned, need another one

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  • ThatGPzGuy
  • Offline
  • Sustaining Member
  • More Sparky than Speed Racer
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03 Dec 2015 05:00 #701684 by ThatGPzGuy
Amazing how well the electrolysis works. I used it on an XZ650 tank I thought was too far gone. came out looking like new and no liner needed.
Cool project. Godawful exhaust

Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"

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