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borninabus
Samba R&D Dept.
Joined: May 18, 2006
Posts: 4539
Location: Arizona Highways
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 Posted: Thu Mar 08, 2012 9:03 am Post subject: Strange Dist Cap Wear |
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never seen this before.
this cap has maybe 1000 miles on it in a 78 FI bus.
any ideas 
the rotor damage to the cap was from me starting it w/ the cap loose 
coincidence?
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88 Van WBX, A/T - 13 JSW TDI 6M/T - 2012 Touareg TDI Sport |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20380
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Thu Mar 08, 2012 9:17 am Post subject: |
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N0......
Rotor is analogous to weed whacker and cap is the weed....
Dale
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Thu Mar 08, 2012 9:22 am Post subject: |
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| weed wacker every time sheed slow down, must of had somethen loose. replace them both with the correct parts instaled corectly, check it again next year.add new plugs&plugwires too,iridum plugs.they take less voltage to fire and last longer under normal conditions.but if you drop a screw down the intake while it is running I dont think they will last any longer than a cheep old champeion |
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DarthWeber
Samba Member
Joined: November 24, 2007
Posts: 7543
Location: Whittier,CA
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| Posted: Thu Mar 08, 2012 11:40 am Post subject: |
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When you tried to start it with the cap loose it may have knocked the carbon out of place and it got trapped at an odd angle and the rotor just ground it away. What does the rotor top look like?
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| Mitey62 wrote: |
| Swapped the Compufire for a Bosch blue and some points I had sitting around, started 1st crank. Took her out for a drive, pulls harder, more RPM, and runs smoother. I think I'll be sticking with points from now on. |
| RockCrusher wrote: |
JB weld the case halves....that'll keep the fretting to a minimum.  |
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borninabus
Samba R&D Dept.
Joined: May 18, 2006
Posts: 4539
Location: Arizona Highways
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| Posted: Thu Mar 08, 2012 12:13 pm Post subject: |
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| DarthWeber wrote: |
| When you tried to start it with the cap loose it may have knocked the carbon out of place and it got trapped at an odd angle and the rotor just ground it away. What does the rotor top look like? |
i didn't "try" to start it; i started it
which i have done before (  ) and never seen damage like this.
the rotor looks a bit "burnt" but not worn like it ground the thing down.
i like your theory about the electrode breaking though.
i bet if i took the dist out i would find it in there somewhere.
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88 Van WBX, A/T - 13 JSW TDI 6M/T - 2012 Touareg TDI Sport |
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DarthWeber
Samba Member
Joined: November 24, 2007
Posts: 7543
Location: Whittier,CA
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| Posted: Thu Mar 08, 2012 12:17 pm Post subject: |
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| borninabus wrote: |
i didn't "try" to start it; i started it
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Amazing how much abuse these little motors can take! The carbon electrode is on a light spring and could have been whipped out of the cap and ??? (eaten alive!) Might be in the bottom of that distributor though, you never know.
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| Mitey62 wrote: |
| Swapped the Compufire for a Bosch blue and some points I had sitting around, started 1st crank. Took her out for a drive, pulls harder, more RPM, and runs smoother. I think I'll be sticking with points from now on. |
| RockCrusher wrote: |
| JB weld the case halves....that'll keep the fretting to a minimum. |
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jsturtlebuggy
Samba Member
Joined: August 24, 2005
Posts: 4496
Location: Fair Oaks/Orangevale, CA
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| Posted: Thu Mar 08, 2012 12:24 pm Post subject: |
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What coil are you using? Does it have a internal or external resistor.
I have seen in the past with the wrong coil, things get burnt up such as what you have and even burn out the resistor in the rotor.
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Joseph
Fair Oaks/Orangevale, CA
Elrod Motorsports
Motion Tire Motorsports
Having fun with Dune Buggies since 1970
Into Volkswagens since 1960 |
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earthquake
Samba Member
Joined: January 10, 2008
Posts: 3984
Location: SANDY VALLEY, NEVADA
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| Posted: Thu Mar 08, 2012 6:35 pm Post subject: |
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I just realized what a clear cap is good for, so you can see the food when you use your distributor as a mini food processor 
Chef Casey
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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Thu Mar 08, 2012 6:51 pm Post subject: |
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| open or almost open wires will eat away at the center elected trode.and is very hard on coils too.I vote for a new one in the next electron voting session. |
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borninabus
Samba R&D Dept.
Joined: May 18, 2006
Posts: 4539
Location: Arizona Highways
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| Posted: Thu Mar 08, 2012 7:16 pm Post subject: |
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| earthquake wrote: |
| I just realized what a clear cap is good for... |
you're gonna love my nuts 
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88 Van WBX, A/T - 13 JSW TDI 6M/T - 2012 Touareg TDI Sport |
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Glenn73
Samba Member
Joined: May 30, 2011
Posts: 1190
Location: West Jordan UT
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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Thu Mar 08, 2012 9:52 pm Post subject: |
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| borninabus wrote: |
| earthquake wrote: |
| I just realized what a clear cap is good for... |
you're gonna love my nuts |
I think he said a Clear cap, not a Q oh never mind. |
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