Carb Tuning Success Story: Part Deux
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Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.โ
โ Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes. -
81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment
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I must be close with the sync, as I have just about removed the stumble that showed itself upon take-off. I do still have that cycling effect going on with the idle, and poor gas mileage, plus that choke does not act the way it is supposed to.
I think I may have a slight rear brake drag, as I sometimes hear a squeal back there when moving the bike (I heard this may be normal), but when I grabbed the disc rotor compared to the front, it was too hot to grab. So, I think that may be a contributing factor to poor mpg's. I do have a rear MC rebuild kit from my 750 that I may use. I'll check into re-building the calipers over the Winter. S/S lines may be on the checklist for Christmas.
I'm not sure if many of you know, but Scott had installed a threaded plug on the #4 pipe for an O2 sensor he used to tune the bike. I believe he connected it to an air/fuel-rich/lean meter. I am interested in finding a similar piece of equipment and tuning my bike with those results. I'm not sure how accurate it would be, using it on only once cylinder pipe, but it's worth a shot.1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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1: I guess you could get one oxygen sensor and move it from pipe to pipe.
2: would am exhaust temp sensor be of any use? I think I've heard of people doing that.
Hats off to you on your persistence here!'81 XS11H Venturer - holed up in storage while life happened since 07/08/04
'81 Kawasaki KE175 enduro - 63 mph of smokey fun, now with collector plates!Comment
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The whole air/fuel ratio thing is something you do not want to do. that would explain why your initial settings were such a wide range. There is something wrong if you can get the air/idle set at 3/4 turn out. BTDT and it ran like ****e.
Check this out for synch info.
2-79 XS1100 SF
2-78 XS1100 E Best bike Ever
80 XS 1100 SG Big bore kit but not fully running yet.
Couple of more parts bikes of which 2 more will live!Comment
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I reset the float height to stock settings the other night, and ended-up having to having to adjust each mixture screw a quarter turn lean from prior setting. It's definitely not right, but I'll wait till the Spring to figure out things
1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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Just on the sync. The mixtures or something is still off, if I can't get the choke to act how I know it's supposed to work.1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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