Attn: SCORP! Question about plugs
Thread Starter
Le Mans Master
Joined: Mar 2001
Posts: 9,464
Likes: 1
From: Modesto CA
Attn: SCORP! Question about plugs
My car is an 87 with Aluminum heads. Manual says gap is at .035, but I've heard people say to put it up to .045. Scorp, care to answer?
P.S.- They're the AC Delco Rapidfire #5
[Modified by TIMSPEED, 12:46 PM 11/28/2001]
P.S.- They're the AC Delco Rapidfire #5
[Modified by TIMSPEED, 12:46 PM 11/28/2001]
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: Attn: SCORP! Question about plugs (TIMSPEED)
Typically you run a larger gap with lower compression, or a higher output ignition system. You will want to run as large a gap as your motor / ignition combo will allow for best performance. Get too big and it won't fire.
For example, my old car, a 91 cutlass only made like 8.3:1 compression, the recommended gap for it was .060
[Modified by Nathan Plemons, 1:36 PM 11/28/2001]
[Modified by Nathan Plemons, 1:36 PM 11/28/2001]
For example, my old car, a 91 cutlass only made like 8.3:1 compression, the recommended gap for it was .060
[Modified by Nathan Plemons, 1:36 PM 11/28/2001]
[Modified by Nathan Plemons, 1:36 PM 11/28/2001]
Drifting
Joined: Mar 2001
Posts: 1,636
Likes: 3
From: Lafayette IN
Re: Attn: SCORP! Question about plugs (TIMSPEED)
FWIW, the stock gap on an '85 is .045 but there was an emissions recall that set it back to .035. Note: Emissions recall, not a problem recall...-Matt-
Le Mans Master
Joined: Jul 1999
Posts: 7,072
Likes: 4
From: Maryland
Re: Attn: SCORP! Question about plugs (HighHopes85)
there was an emissions recall that set it back to .035.
Drifting
Joined: Mar 1999
Posts: 1,931
Likes: 1
From: Norcross GA
Re: Attn: SCORP! Question about plugs (Juliet)
If done right, emission's go down as power goes up. (Of course, to a point.) Sounds to me you will get a better burn w/ the stock setup if you have a .035" gap. A better (more complete) burn will result in more power.
The real question: will you really feel it on a stock setup,.... My guess is, you'd need a pretty sensitive butt to feel the diff.
The real question: will you really feel it on a stock setup,.... My guess is, you'd need a pretty sensitive butt to feel the diff.
Le Mans Master
Joined: Jul 1999
Posts: 7,072
Likes: 4
From: Maryland
Re: Attn: SCORP! Question about plugs (ZylaRace)
My guess is, you'd need a pretty sensitive butt to feel the diff.
