Difference between revisions of "VW Electrics Ignition Coil"
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==Ignition Coil - Types== | ==Ignition Coil - Types== | ||
Brickwerks list three types for petrol engines, an early coil used (roughly) up to 1984, then a green label and grey labelled coil for later engines. The green label one is the most common of all for late engines. The grey sticker version has a higher secondary resistance and is capable of higher HT voltage (bigger spark). This coil is designed for long life plugs and extended servicing, and can fire a worn plug with larger gaps. '''However''', | Brickwerks list three types for petrol engines, an early coil used (roughly) up to 1984, then a green label and grey labelled coil for later engines. The green label one is the most common of all for late engines. The grey sticker version has a higher secondary resistance and is capable of higher HT voltage (bigger spark). This coil is designed for long life plugs and extended servicing, and according to BigHerb can fire a worn plug with larger gaps. '''However''', it is not a direct swap/replacement unless you also change the HT lead connection. The HT leads also need to be in good order for this type of coil otherwise the higher voltage will find a much easier route to earth than through the spark plug (arcing). In most cases, the green label variety is the correct one if you have a late engine but a grey sticker one can be fitted if the above points are noted. | ||
'''Ignition Coil (Early) up to 1984''' | '''Ignition Coil (Early) up to 1984''' | ||
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Secondary resistance [between terminals 1 & 4] - 6.9kΩ to 8.5kΩ | Secondary resistance [between terminals 1 & 4] - 6.9kΩ to 8.5kΩ | ||
Read note above for differences between green and grey stickered types. They are not a straight swap. | Read note above for differences between green and grey stickered types. They are '''not''' a straight swap. | ||
Revision as of 09:07, 24 May 2014
Ignition Coil - Types
Brickwerks list three types for petrol engines, an early coil used (roughly) up to 1984, then a green label and grey labelled coil for later engines. The green label one is the most common of all for late engines. The grey sticker version has a higher secondary resistance and is capable of higher HT voltage (bigger spark). This coil is designed for long life plugs and extended servicing, and according to BigHerb can fire a worn plug with larger gaps. However, it is not a direct swap/replacement unless you also change the HT lead connection. The HT leads also need to be in good order for this type of coil otherwise the higher voltage will find a much easier route to earth than through the spark plug (arcing). In most cases, the green label variety is the correct one if you have a late engine but a grey sticker one can be fitted if the above points are noted.
Ignition Coil (Early) up to 1984
Suits early T3 models with non pin type fitting (DIN) (ie similar to bays and beetles with no pin in the holes on distributor cap)
Test data. Primary resistance [between terminals 1 & 15] - .52Ω to .76Ω Secondary resistance [between terminals 1 & 4] - 2.4kΩ to 3.5kΩ
Ignition coil - Green (Later type 1986-90) with pin type fitting - most common type for late engines.
Bosch unit with green label. VW No. 211 905 115 D
Test data. Primary resistance [between terminals 1 & 15] - .5Ω to .8Ω Secondary resistance [between terminals 1 & 4] - 2.4kΩ to 3.5kΩ
Ignition coil - Grey (Later type 1986-90) with pin type fitting - extended servicing type.
Bosch unit with grey label. VW No. 191 905 115 A
Test data. Primary resistance [between terminals 1 & 15] - .6Ω to .8Ω Secondary resistance [between terminals 1 & 4] - 6.9kΩ to 8.5kΩ
Read note above for differences between green and grey stickered types. They are not a straight swap.
