Does anyone know the spec of the "double platinum" spark plugs that Regal fits. I'd be interested to know the make and if they are a cooler grade (ie harder) than the standard plug?
cheers
Griffo
Spark Plugs
Started by
griffo
, Mar 23 2003 07:36 PM
2 replies to this topic
#2
Ricky2772
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Scary Internerd
- Interests:For those who grasp for Hir beyond the horizon of usual consciousness, preparing for the time when something powerful will present Hir-Self This advise is given...
Posted 23 March 2003 - 08:27 PM
double platinum or iridium?
up until you don't modify the engine internally, it's not advisable to install cooler-running plugs.
once you get new cams and higher rev-limiter, you might think to switch to a cooler grade, i.e. from IK20 to IK22 (denso iridium)
iridium sport are quite expensive at 100 euros and last only 10/15K miles....
while reg. iridium/platinum last much longer....
just do not expect noticeable performance gains, at least on the n/a.
otoh, turbos can get up to +5/6hp!
#3
minime
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Billy No Mates
- Location:southampton
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Posted 23 March 2003 - 10:11 PM
i have ngk platinums fitted to mine .....i noticed a difference ...the car just seemed a little smoother! but i will say they are they are better than the originals...
cant say more than that....
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