Difference between revisions of "VW Electrics Ignition Coil"
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'''However''', the grey coil is not a direct swap/replacement unless you also change the HT lead connection. The HT leads also need to be in good order and/or good quality for this type of coil otherwise the higher voltage will find a much easier route to earth than through the spark plug - ie the potential for arcing increases. Brickwerks list one made by Beru and one made by Bosch. | '''However''', the grey coil is not a direct swap/replacement unless you also change the HT lead connection. The HT leads also need to be in good order and/or good quality for this type of coil otherwise the higher voltage will find a much easier route to earth than through the spark plug - ie the potential for arcing increases. Brickwerks list one made by Beru and one made by Bosch. | ||
In most cases, the green label variety is the correct one if you have a late (86-90) engine but a grey sticker one could be fitted if the above points are noted. | In most cases, the green label variety is the correct one if you have a late (86-90) engine but a grey sticker one might be fitted to your vehicle and could also be retro-fitted if the above points are noted. A coil for extended service life has some advantages, particularly if you're averse to maintenance but the whole ignition system, plugs leads, rotor and cap must be in good order if you're to avoid arcing. | ||
Revision as of 09:30, 24 May 2014
Ignition Coil - Types
Edited by CovKid: Brickwerks list three types of coil for petrol engines (see below). Firstly theres the early coil (211 905 115 B)used up to around 1984-85, then a green label and grey labelled coil for later 1986-1990 vehicles.
The green label one (211 905 115 D) is the most common of all for late engines.
The grey sticker version (191 905 115 A) is basically a 'punchier' version of the green one although that does not mean you'll get more power from your engine - get that idea out of your head. It has a higher secondary resistance and is capable of higher HT voltage. It is designed for long life plugs and extended servicing, and according to BigHerb can fire a worn plug with larger gaps.
However, the grey coil is not a direct swap/replacement unless you also change the HT lead connection. The HT leads also need to be in good order and/or good quality for this type of coil otherwise the higher voltage will find a much easier route to earth than through the spark plug - ie the potential for arcing increases. Brickwerks list one made by Beru and one made by Bosch.
In most cases, the green label variety is the correct one if you have a late (86-90) engine but a grey sticker one might be fitted to your vehicle and could also be retro-fitted if the above points are noted. A coil for extended service life has some advantages, particularly if you're averse to maintenance but the whole ignition system, plugs leads, rotor and cap must be in good order if you're to avoid arcing.
Ignition Coil (Early) up to 1984
VW No. 211 905 115 B
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.
VW No. 211 905 115 D
Bosch unit with green label.
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.
VW No. 191 905 115 A
Bosch unit with grey label.
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. Brickwerks advise that you check to see what colour sticker is on yours before ordering.
