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How many miles do you have on your SS? The stock plug is pretty nice for a while... I would love to say that there is a better plug but even the vendors here would probably tell you to leave them alone... I just hate to see you change the plugs if you don't have that many miles on it..
If there is a better plug and Im not aware they may reply here and let you know..
Its almost a year that i own a slingshot ... i just start putting miles on it so far almost 3000 
I will let some others reply. They may have a different opinion.
NGK is what @Noel Hughes put in after tubo install and says they are the best!!
NGK is what @Noel Hughes put in after tubo install and says they are the best!!
Is there a certain size that i need to consider ?? can i get these from any local retailer ??
@<<Devil>> this is a link to what I have. You can get em most anywhere but where I live I had to order em online.
Just my opinion, given modern ECMs and electronic ignition with hot sparks and wide plug gaps not sure there is any real benefit to prematurely changing plugs on a normally aspirated engine.
Just my opinion, given modern ECMs and electronic ignition with hot sparks and wide plug gaps not sure there is any real benefit to prematurely changing plugs on a normally aspirated engine.
Yeah - what he said 
Yeah - what he said
I know different components do add up in performance ... but my question is at a general level did you see any performance upgrade ??
I changed my plugs to Brisk with a 360 degree spark gap. So far they are working fine.
I changed my plugs to Brisk with a 360 degree spark gap. So far they are working fine.
There are different sizes ... in there 12 mm or 14 mm which ones you selected ??
My Sling buddy ordered them for me at $69.00 bucks for 4 plugs. I know there is a cross-reference chart his mechanic used. When I get home tonight from work I will get the info for you from the box. I live in San Antonio and I know he ordered them from a company in Houston. You need to be very careful when installing them. You can't damage the point because they will useless if you do. I attached a copy of the box but there is no part number on the box.
I remember getting plugs like those back in the 70s from JC Whitney when I was hot rodding VWs. (called fire something).They worked great for a few thousand miles and then completely stopped working for some reason. Aviation has tried various combinations of electrodes over the years from one to four. The single ones are the best and most expensive. Since electricity tends to take the path of least resistance, the multiple arcing spots don't last that long as material or carbon builds on plugs. When it's back to one arc, it may not be in the best position (centered).
Wooooaaaaa. The turbo install requires a different plug. Don't run them with stock internals. I mean you could but you would be hurting your performance. The blade and tip on the plugs that are for a turbo install are wider and fatter. They give a broader spark.
Plugs are one those items that are definitely subjective. If you have 3000 miles on it I wouldn't change them. They will probably be NGK plugs anyway. And I believe they are Iridium plugs. One of the better plugs. Just send me that $70.00 dollars and I'll tell everybody you swapped them. 
Plugs are one those items that are definitely subjective. If you have 3000 miles on it I wouldn't change them. They will probably be NGK plugs anyway. And I believe they are Iridium plugs. One of the better plugs. Just send me that $70.00 dollars and I'll tell everybody you swapped them.
Gotta agree ..... The stock AC Delco 41-103 is an Iridium plug.........
No real reason to change them early unless you go forced induction .....
Here is a cross reference just because ....
http://www.sparkplug-crossrefe…m/convert/AC_DELCO/41-103
.
Plugs are one those items that are definitely subjective. If you have 3000 miles on it I wouldn't change them. They will probably be NGK plugs anyway. And I believe they are Iridium plugs. One of the better plugs. Just send me that $70.00 dollars and I'll tell everybody you swapped them.
hehehe funny ... i'm better of not changing it 
... JK , one i'm done with the radio install there is something coming your @rabtech way and and so as @WraithSS
This is what the folks at Brisk told me reference plugs for the NA Slingshot. If you have made modifications, give them the specs and they will give you their product recommendation. I haven't used their plugs, have no financial interest in the company, just passing along the information.
Thank you for your interest in our products. For this application, here are the recommended spark plugs that we have to offer:
BRISK Premium EVO RR15SXC
http://www.briskracing.com/bri…rr15sxc-spark-plug-detail
BRISK Premium LGS ROR15LGS
http://www.briskracing.com/pre…or15lgs-spark-plug-detail
BRISK Premium Multi-Spark RR15ZS
http://www.briskracing.com/bri…5zs-spark-plug-433-detail
BRISK Iridium Performance RR15YIR
http://www.briskracing.com/bri…rr15yir-spark-plug-detail
