quick abf conversion q

[danny_p]

i really dont think it matters what coil you use,   both systems work just fine i've never had any problems with useing mk3 coil and have plenty of spares sat around the only reall issue i think is that over time the resin case on the mk3 coil can crack.   never had any proablems with the mk2 setup ether. 

tho the mk3 coil pack is getting fitted to rather a lot of other other other older cars as it's a simple retrofit     

[rubjonny]

personal preference really at the end of the day, both work just as well.
Just that you see a hell of a lot more threads in the mk3 forums with guys having broken coils than you do in the mk2 forums, and thats on cars 10 years older plus!  Also since the car already has a MK2 coil no need to source a replacement.
Last of all I just dont like the idea of opening the casing to get at the rev counter feed, when there is a perfectly fine off the shelf way to do it

I've seen it suggested the MK3 coils fail due to heat, so perhaps suitable heat sheilding/moving to a cooler location would help extend their life?

[paultownsend]

rj, how do we incorporate the mk2 coil into an abf conversion?

[rubjonny]

not particularly difficult but you need some bits from a MK2 loom.  you need the TCI-H and coil, plus the wiring in between. you also need to run the red/black and black wires from the coil to the fusebox (rev counter & ign live). plug the tci & coil in as before, then chop off the MK3 coil plug and splice the reg/green wire to pin 6 on the TCI.

Basically exactly how the MK2 8v digifant/16v TCI is wired up

[danny_p]

easyest way i find is to grab an ignition loom from a carb model and modify that.