hi guys i was wondering whats the best spark plugs for my 3 door seirra cosworth as i am getting a full rebuild done and want to put the best things i canand i have heard of a coil pack conversion what does it do?and do you know how much they are?and who does them? i have a group a coil on just now.Whats the best oil aswell really any help is good help cheeRS guys

 

MSD does wasted spark m8,plugs go for motorcraft 071's,oil go for silkolene pro s .

 

071's will work but not anywhere near the best.
It depends on how mcy power you are running, up to stage one go for AGPR12PP8, or the DENSO equivalent(from ford's), if over stage1 I would use IK31's.
Coilpack is good if you need it, if you don't it won't do a thing.
Basically the coilpack as used on mondeo's etc is more powerfuil and delivers a better spark, it also does away with the gap between the rotor arm and cap, as well as these bits, you still need the dizzy for phase sensor, you can just leave th dizzy cap on to cover or get a blingy cover.
Normally used on high power cossies that blow the spark out, MSD do these but NOT cheap.
I would go for SILKOLENE PRO S, from the oilman on here, quote PF and get a discount.
tabetha

 

I use NGK irudium spark plugs they cost me about 25 quid for the 4. I always got told the champion plugs were crap. For the oil i use silkolene 10/50 oil.

 

Champion plugs have their place in the correct spec engine.
tabetha

 

Agreed, I used to run with the Champion C57's in my Stage III engine. But used to coke up easily due to lots of driving in slow traffic (I'm in Hong Kong), now I'm using the Denso IK31, which have performed much more consistantly and as they tips are much much smaller can decoke themselves very quickly.

 

The ngk plugs i have,have a small tip too. Ive been told ngk spark plugs are one of the best to use.

 

I use IK31, and actually had to change my driving style as they were coking up!!
I never went over 2000rpm in the city, as modded head is so much more driveable with next to no revs/throttle, so now I just let it rev up to 3000 or so, on a tiny throttle, does the trick!!
tabetha