Oilsmoke Posted April 9, 2004 Report Share Posted April 9, 2004 Hey what do you guys think about this Mod. I never heard of it before. Side gapping. I found it on the page Serish posted Here. Anybody every try it? Looks like a Great idea. This is a repost here for more visibility. Quote Link to comment Share on other sites More sharing options...
Ducman Posted April 9, 2004 Report Share Posted April 9, 2004 Sounds pretty believeable to me. I'd go with an iridium plug first though, to get the increased spark power and plug longevity, tradeing higher cost for the same performance and less maintenance. Quote Link to comment Share on other sites More sharing options...
KRMit Posted April 9, 2004 Report Share Posted April 9, 2004 So that's how the plugs should look after a 10 second WOT run? I didn't realize the porcelain would have such a drastic difference in 10 seconds. Quote Link to comment Share on other sites More sharing options...
Yamahammer Posted April 9, 2004 Report Share Posted April 9, 2004 i read a lot on this last year they also call it j gappin they clain=m it helps alot.... we where testing this on a jet ski.. i never tried it to much woek for very little gain .. We also clock or index the plugs some have reported gains of 40 rpms by just doing this mod.. they sell washers of different thicknesses to adjust in what direction the strap points twards the exaust is ideal so that the incoming fuel charge does not extinguish the plug.. Quote Link to comment Share on other sites More sharing options...
sredish Posted April 10, 2004 Report Share Posted April 10, 2004 Hey what do you guys think about this Mod. I never heard of it before.Side gapping. I found it on the page Serish posted Here. Anybody every try it? Looks like a Great idea. This is a repost here for more visibility. This is what I wrote in the other topic regarding "Side Gapping": "But that's acting like the fuel mixture is underneath the spark, when it's actually surrounding the entire sparking area and plug, so I don't see that it would benefit that much. Also, by covering the electrode with the arm, you have more sparking area, by "side gapping", your limiting the amount of area to allow for spark. Nice theory, I just don't agree. With my plugs, couldn't do it anyway." Quote Link to comment Share on other sites More sharing options...
squish Posted April 10, 2004 Report Share Posted April 10, 2004 Yes think about when the plug does fire is the mixture around it or directly underneath? I could see how this would benifit a four stroke it having such a large chamber compared to a two stroke. Quote Link to comment Share on other sites More sharing options...
Oilsmoke Posted April 11, 2004 Author Report Share Posted April 11, 2004 what plug are you using sredish? I feel with side gapping you could cover more area instantly then a stanard normal plug with it's fan spray style of a flame front. Better or instant flame front would make for a more complete burn and better use of your fuel. I will try a set of NGK b8es and see on the assdyno. Quote Link to comment Share on other sites More sharing options...
sredish Posted April 11, 2004 Report Share Posted April 11, 2004 what plug are you using sredish? I feel with side gapping you could cover more area instantly then a stanard normal plug with it's fan spray style of a flame front. Better or instant flame front would make for a more complete burn and better use of your fuel. I will try a set of NGK b8es and see on the assdyno. what plug are you using sredish? I use the NGK Iridium plug (BR8EIX). It has a really hot spark. I feel with side gapping you could cover more area instantly then a stanard normal plug with it's fan spray style of a flame front. Better or instant flame front would make for a more complete burn and better use of your fuel. I will try a set of NGK b8es and see on the assdyno. The spark won't be any faster, it will spark at the same exact moment that a standard plug would spark. Try it out and get back, we'll see how it goes, although I'm fairly pesimistic about it. Later. Quote Link to comment Share on other sites More sharing options...
Holyman Posted April 12, 2004 Report Share Posted April 12, 2004 I know a guy that is absolutely fanatic about his 5.0 Lincoln and has it hopped up with all kinds of stuff. When I got mine he said the first thig to do was side gap the plugs. He said it makes a significant HP difference but you MUST change the plugs regularly because they wear out much faster. This guy KNOWS HIS STUFF so I tend to believe it is true. However that's on a V8 so I'm not sure if the effects would be as significant on a small twin. Quote Link to comment Share on other sites More sharing options...
Oilsmoke Posted April 12, 2004 Author Report Share Posted April 12, 2004 The spark won't be any faster; it will spark at the same exact moment that a standard plug would spark. Try it out and get back, we'll see how it goes, although I'm fairly pesimistic about it. sredish I'm not saying that it sparks faster I'm saying the spark is more exposed to the fuel and not obstructed buy the electrode, which would ignite, more fuel in that same instant. Better more powerful burn. That how they could claim more HP. On the NGK Iridium plug (BR8EIX). Uses some of this theory if the plug electrode sides are cut on a 45-degree so it opens it up to fuel charge. Accel U groove, Spitfires. Many plugs are using this theory in a different style. But if it works on a cheap set of plug you could save 5 bucks or more set. Quote Link to comment Share on other sites More sharing options...
sredish Posted April 12, 2004 Report Share Posted April 12, 2004 Seriously, I'm anxious to see how it works out. Too bad there's not a dyno available to see if there is some hp gains that your arse won't feel. And I'm not trying to put it down, if there's that much hype, then it's probably for a reason. Good luck, and get back after the testing. Scott Quote Link to comment Share on other sites More sharing options...
motohawk Posted April 13, 2004 Report Share Posted April 13, 2004 I read in Hot Rod magazine a few years ago and they did a dyno run with a set stock plugs and a set of "side Gapped" plugs. On the 350 Chevy they used, there was a 7 HP gain in overall power. That engine made just over 400HP. That is just about a 2% gain in power. If it is worth that on the Banshee engine then go for it. I dont see it hurting anything if done properly. Matt Quote Link to comment Share on other sites More sharing options...
sredish Posted April 13, 2004 Report Share Posted April 13, 2004 2% on a banshee comes out to around 1 horse or so. Still, that's not a bad gain for such a simple mod. Oilsmoke, you gonna try it out? Quote Link to comment Share on other sites More sharing options...
Oilsmoke Posted April 13, 2004 Author Report Share Posted April 13, 2004 I am Yes but My motor is down until Jim does is magic to it. and will need too get a feel for the power so as to not get mixed up with 12 port stroker power I am go to be running. So i will in a month or so before I can try. Quote Link to comment Share on other sites More sharing options...
Oilsmoke Posted July 3, 2004 Author Report Share Posted July 3, 2004 OK i tried it. It felt alittle stronger Temp rose about 10/15 degree and the ground electrode temp line moved down alittle lower. It help. but i still little fat on my main jet. Quote Link to comment Share on other sites More sharing options...
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