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Side gapping and plug indexing |
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wannabeSS 
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Joined: March-01-2006 Location: United States Status: Offline Points: 125 |
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 Topic: Side gapping and plug indexingPosted: February-27-2007 at 9:30pm |
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96 Camaro SS #1157
84 Ski Nautique, fat sacks, fly high pole 06 LF Fish 125 06 LF PS3 137 |
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21186 |
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Posted: February-27-2007 at 7:58am |
Thats what Im thinking. The only downside is time- and we have plenty of that before the ice breaks. Im not too worried about the shortened plug life- theyre cheap and I change em every season anyways. |
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Tim D
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Joined: August-23-2004 Location: United States Status: Offline Points: 2641 |
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Posted: February-26-2007 at 8:19pm |
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What does "my imagination" mean up there?
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Tim D
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05 210
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Joined: February-17-2006 Location: Southern Maine Status: Offline Points: 1481 |
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Posted: February-26-2007 at 7:00pm |
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I would think in a race application where every detail counts,it's worth it.I can't imagine you would notice a huge(or even noticeable)difference in your application Tim.I would take 79's advise and buy a real good set of plugs and wind em in.But then again,the winter is alot longer up here than it is where he's from,at least it would help pa$$ the time
Mike |
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79nautique
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Posted: February-26-2007 at 9:28am |
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just get xp series or plattnum (sp) plugs and don't worry about the side gapping, because it's all ready done for the most part.
just be carefull you'll go through the plugs much quicker and will have to replace mid season. |
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TRBenj
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Posted: February-26-2007 at 7:47am |
Im thinking it would probably be better to just keep trying different plugs to avoid using washers. I a$$ume you side-gapped the plugs on your boat at the same time you indexed them? |
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Waterdog
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Posted: February-26-2007 at 7:18am |
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Munday
I had a 1327 kaw drag bike ran pro gas (9.20) prostar and et @ Atmome Al. That thing would hook 1.1 60 foot. FUN !!! I indexed the plugs cus I could ? |
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Tim D
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Joined: August-23-2004 Location: United States Status: Offline Points: 2641 |
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Posted: February-25-2007 at 8:46pm |
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I've done both. With indexing, those spacer washers allow the plugs to get loose after several hours. I think it ran better, might have been my imagination for all the effort. My brother in law was into go cart racing and on a small engine like those they could gain 1 horsepower from indexing.
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Tim D
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Munday
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Posted: February-25-2007 at 8:28pm |
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I tried plug indexing on a kawasaki drag bike.
This would seem like a good test to me,found no effect on et or mph.Later on I had to index just to keep exhaust valve from interfering,that was a have to deal. Just my experience and your right it can't hurt Munday |
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TRBenj
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Posted: February-25-2007 at 2:53pm |
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I was curious if anyone here has much experience with side-gapping or indexing spark plugs. These techniques have been around for years, and seem to have legitimate claims of making a few hp by improving combustion efficiency. For those who are unfamiliar, here are a few articles explaining each:
Side Gapping Plug Indexing The consensus with the Mustang guys over on Corral.net seems to be that indexing "can't hurt and might help." Side-gapping also has its proponents, and the only side effect seems to be shortened plug life. Some say that trimming the ground strap back to the center of the electrode is nearly as effective as trimming to the edge, with better plug life. I figure these are a few ways to gain a few extra hp for free. Anyone have any first hand experience? |
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Waterdog wrote: