Spark gap
11-19-2009, 09:29 AM
#1
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Spark gap on a H/C car, does it really matter if the plugs are gapped at .040 vs to being gapped at .050. Does it really make any difference at all???
I would assume .050 would be the optimal gap for a H/C setup, but why would others make the gap even tighter to .040.
I would assume .050 would be the optimal gap for a H/C setup, but why would others make the gap even tighter to .040.
11-19-2009, 10:08 AM
#2
Alot of this depends on the details of the combo. What compression are you running? Which heads (GM, aftermarket, etc)? What camshaft and how high are you going to spin the motor? You want as wide of a gap as possible, without having blow-out issues, and all of those variables will play into that.
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11-19-2009, 11:25 AM
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Alot of this depends on the details of the combo. What compression are you running? Which heads (GM, aftermarket, etc)? What camshaft and how high are you going to spin the motor? You want as wide of a gap as possible, without having blow-out issues, and all of those variables will play into that.
11-19-2009, 11:37 AM
#5
I would start at .050"....you might get away with .055" depending on the plug, wires, and tune.
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COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!