Spark plugs for Vortech
The 7173's are R5672A-8's. 7173 is the NGK stock #.
As far as removing the pulley, you need the crank pulley holder. Either borrow or buy the Honda special tool, borrow or buy the similar tool Moroso sells, or find another equivelent tool from Autozone, Snap-on Mac, Etc. Yes the bolt is on very tight, and it has standard threads. Turn left to loosen.
As far as removing the pulley, you need the crank pulley holder. Either borrow or buy the Honda special tool, borrow or buy the similar tool Moroso sells, or find another equivelent tool from Autozone, Snap-on Mac, Etc. Yes the bolt is on very tight, and it has standard threads. Turn left to loosen.
I've never run a plug in the 10's, I have run R5672A-9's, when dealing with detonation issues. I never ran them hard enough or long enough to see how they would perform long term. The 9's looked normal when pulling them after 800miles or so. Since they had no effect on the detonation I swapped back to the 8's.
Originally posted by Calwizzy
Do the copper Spark plugs last longer at all? i have the Vortec SC and i am looking for better spark plugs.
Do the copper Spark plugs last longer at all? i have the Vortec SC and i am looking for better spark plugs.
I used the stock re-gapped platinum plugs with my Vortech for over a year. It's a daily driver and they worked just fine. I've recently been trying out the NGK copper "V" racing plugs, one heat range colder and they also work fine but I can't honestly say I can "feel" a difference. I have Denso IK-24's waiting to go in when I think the coppers have done all they can do.
Just as important as the type of plug to use in this application is the gap to use.
Mine are at 0.034". I've seen it as low as 0.028" but unless you drive the car at its limit a lot of the time, this (IMO) is too small. They'll foul too soon and need replacement. I ran with the current gap (OEM plugs) for over a year. The car ran well as a daily driver and performed well when pushed. They never fouled in that time. So far, on the short term (3 to 4 months), with the same gap on the copper plugs, same observation.







