Project KZ440 Scrambler
- Adrian719
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Re: Project KZ440 Scrambler
15 May 2024 19:43 - 15 May 2024 19:44
Updates:
New brake line arrived today. While bleeding the system I noticed a hiss coming from the caliper. I think the piston seal is leaking so I'll have to order a rebuild kit.
The fuel petcock is also leaking, so that needs a rebuild kit as well.
I ended up removing the rear fender and the rear fender mount. This allows the seat to sit lower/flatter, and it gives the bike a more rugged look. I still need to trim the front fender.
All the lights are now permantely wired up.
The intakes are also finished. Each carb has a 2 inch long piece of 55mm ID silicone intake hose with a small foam pod filter.
I'm going to try making a skid plate with some 1/4" HDPE.
Still dealing with the broken tap in the cylinder head.
New brake line arrived today. While bleeding the system I noticed a hiss coming from the caliper. I think the piston seal is leaking so I'll have to order a rebuild kit.
The fuel petcock is also leaking, so that needs a rebuild kit as well.
I ended up removing the rear fender and the rear fender mount. This allows the seat to sit lower/flatter, and it gives the bike a more rugged look. I still need to trim the front fender.
All the lights are now permantely wired up.
The intakes are also finished. Each carb has a 2 inch long piece of 55mm ID silicone intake hose with a small foam pod filter.
I'm going to try making a skid plate with some 1/4" HDPE.
Still dealing with the broken tap in the cylinder head.
Last edit: 15 May 2024 19:44 by Adrian719.
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- Adrian719
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Re: Project KZ440 Scrambler
17 May 2024 14:57 - 17 May 2024 18:17
Took it for a spin today. Felt pretty low on power.
Plugs are fouled and the spark looks weak so I'm going to replace them with the correct spark plugs and test the ignition coil.
Also need to check the valves. Other than that it runs and stops! So thats a win.
Edit:
Well went to look at the timing advance unit and found this:
youtube.com/shorts/ErAnRZeUVkg?feature=share
Plugs are fouled and the spark looks weak so I'm going to replace them with the correct spark plugs and test the ignition coil.
Also need to check the valves. Other than that it runs and stops! So thats a win.
Edit:
Well went to look at the timing advance unit and found this:
youtube.com/shorts/ErAnRZeUVkg?feature=share
Last edit: 17 May 2024 18:17 by Adrian719.
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- Adrian719
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- sf4t7
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Re: Project KZ440 Scrambler
18 May 2024 15:08Scotty
1974 Z1A
1015
welded Z1 crank
Andrews 1X Cams
Delkevic 4 into 1
Superbike bars
530 conversion
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- !Seymore
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Re: Project KZ440 Scrambler
18 May 2024 19:25DOH! There's your problem...
C.
79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
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- Adrian719
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Re: Project KZ440 Scrambler
19 May 2024 06:33
Do I try to clean this up or do I try and replace it? How exactly do the weights work, can this assembly spin at a different speed than the crankshaft?
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- ckahleer
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Re: Project KZ440 Scrambler
19 May 2024 08:47
Clean it the best you can as it sets. Then disassemble and give each part a good cleaning.
94 KE100
82 KZ305
85 VF1100c
82 KZ305
85 VF1100c
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Re: Project KZ440 Scrambler
20 May 2024 03:35Clean it the best you can as it sets. Then disassemble and give each part a good cleaning.
Agreed... start with this: www.google.com/search?q=electrical+contact+cleaner
C.
79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)
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- TexasKZ
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Re: Project KZ440 Scrambler
20 May 2024 15:11
Wow, what a mess. I would clean it all up and assess, but I bet the rotor is too far gone to save.
The rotor spins at exactly the same speed as the crankshaft. As rpm rises, the springs allow the weights to move outward, slightly advancing the point at which the plugs fire. As rpm goes down, the springs pull the weights back, thus retarding the spark a bit.
Be very careful with that 13 mm bolt in the center. If you break it, you will be very sad. Lots of good penetrating oil and patience will pay off. Kano Kroil and Liquid Wrench are among the best penetrants. WD40 and such, are a waste of time here.
The rotor spins at exactly the same speed as the crankshaft. As rpm rises, the springs allow the weights to move outward, slightly advancing the point at which the plugs fire. As rpm goes down, the springs pull the weights back, thus retarding the spark a bit.
Be very careful with that 13 mm bolt in the center. If you break it, you will be very sad. Lots of good penetrating oil and patience will pay off. Kano Kroil and Liquid Wrench are among the best penetrants. WD40 and such, are a waste of time here.
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
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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- Adrian719
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Re: Project KZ440 Scrambler
20 May 2024 15:34Well that would explain the lack of power of the timing is too slow at high rpm.Wow, what a mess. I would clean it all up and assess, but I bet the rotor is too far gone to save.
The rotor spins at exactly the same speed as the crankshaft. As rpm rises, the springs allow the weights to move outward, slightly advancing the point at which the plugs fire. As rpm goes down, the springs pull the weights back, thus retarding the spark a bit.
Be very careful with that 13 mm bolt in the center. If you break it, you will be very sad. Lots of good penetrating oil and patience will pay off. Kano Kroil and Liquid Wrench are among the best penetrants. WD40 and such, are a waste of time here.
I sprayed the whole thing with deep creep on Friday and will check it again tomorrow. I don't even want to touch that 13mm lol
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- Adrian719
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Re: Project KZ440 Scrambler
21 May 2024 16:42
Managed to get it cleaned up. Deep creep and a brass brush worked well. The weights move freely now.
So while the bike is idling, it will occasionally backfire through the carb. Also as the RPM's climb, power depletes. I can't tell at what RPM as the tachometer isn't working for some reason.
So while the bike is idling, it will occasionally backfire through the carb. Also as the RPM's climb, power depletes. I can't tell at what RPM as the tachometer isn't working for some reason.
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- Adrian719
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Re: Project KZ440 Scrambler
22 May 2024 18:15
Managed to get that crank bolt out and take the whole timing assembly off. Going to soak everything in vinegar overnight and scrub it down again.
I did notice while removing it that something is broken.
I did notice while removing it that something is broken.
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