| [ Total Views: 781 | Total Replies: 7 | Thread Id: 19112 ] |
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 68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
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 posted on February 17th, 2004 at 09:56 AM |
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Rotor button- a weak link in the VW ignition
I'll bet most VW owners or Mechanics don't know that the VW Rotor Button has a resistor in the top of it. If the resistor burns out,
no spark... The VW rotor button is the only one I know that has this.. All other rotor buttons I have seen have a copper strip from the centre to
the edge... On a VW rotor button You will see some epoxy cement between the centre & edge, this is where the resistor is..
So it pays to carry a Spare rotor button...
Lee
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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blutopless2
Veteran Volks Folk
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| posted on February 17th, 2004 at 10:37 AM |
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i gather this acts as a current limiter for the rotor??
see.... air and water do mix 
1974 1300
1997 MK3 Golf GL
2003 NB Cabrio
2012 Golf VI GTI
2014 Audi A4 Quattro |
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mnsKmobi
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| posted on February 17th, 2004 at 02:28 PM |
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My understanding is that the resistor is to suppress electrical noise. Apparently it can burn out if you put too much current through it. The
alternatives are to:
- dig out the resistor and replace it with a wire
- buy aircooled.net's replacement rotor that has had the resistor removed
- work out the drop in replacement that doesn't have the resistor! (And share the info with the rest of us. )
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BiX
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| posted on February 17th, 2004 at 02:43 PM |
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Id this for standard rotors? o don't remeber my 009 having one, or the porche one i use in the 009 (it has a rev limiter) |
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Rota_Motor
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| posted on February 17th, 2004 at 03:15 PM |
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wow, are you serious, I thought they would have used a normal rotor buttion and resistor leads/plugs like everyone else
well if nothing else, I know to keep an eye out for this. |
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Old Dubber
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| posted on February 17th, 2004 at 03:27 PM |
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I disagree about the weak link! I've seen "silicon" plug wires fail more times than a VW rotor.
It's for radio suppression and plug gap erosion.
It's also in some spark plug connectors.
Simple check- it's must be less than 10,000 ohms.
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
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| posted on February 17th, 2004 at 09:32 PM |
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the US rotor buttons without the resistor are more expensive!!!
I like the original VW wire type spark plug leads with the VW resistor spark plug caps. I don't think the silicon leads can take the heat from
the VW engine too well. I have had many failures over the years in VW engines only.... I have never had a Rotor button fail on Me, but then I always
replace them at regular intervals, same as the distributor cap.. It happened to a local "L" Beetle a few weeks ago...
and I have one of the US non resistor type for a spare..
Lee
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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hellbugged
A.k.a.: Daimo Pell
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| posted on February 17th, 2004 at 09:35 PM |
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yeah , my rotor button blows out all the surrounds in that area every 12 months
( 009 ray box electronic ignition, compufire omnipack and leads )
[Edited on 18-2-2004 by dumone]
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mnsKmobi
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| posted on February 18th, 2004 at 08:07 AM |
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| Quote: | Originally
posted by dumone
yeah , my rotor button blows out all the surrounds in this area every 12 months
( 009 ray box electronic ignition, compufire omnipack and leads )
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I'm glad I'm in Melbourne then!
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 Peter Leonard
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| posted on February 19th, 2004 at 02:35 AM |
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i managed to rediscover the meaning of "flummoxed" thanks to my rotor. NRMA took half an hour to discover that it was cracked (ultra fine
hairline) and was conducting the current straight down to the case, killing my bug. new rotor, no wuckas. now i carry a spare. and a spare distributor
cap. and three pounds of lard.
let sleeping dubs lie
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