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Have anyone changed the exhaust from stock to a 4-1?
Did you have to rejet the carbs and how much?
Did you have to rejet the carbs and how much?
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What type of 4-1.1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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With my Kerker pipe I installed a 117.5 (stock 107.5) and a 47.5 pilot jet (45 stock) with the airbox lid removed.1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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So in my case i will go 130 (stock 120) an pilot 45 (stock 40)?Originally posted by chef1366 View PostComment
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42.5 pilot would be my best guess on the pilot jet.Originally posted by Tompasio View Post1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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I've got a local manufactured aftermarket "Formula One" 4/1 system on my 16valve GSX750SE 84 model, and main jets are 117.5. Excellent at this. I'm at 900metres above sea level.Comment
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So, Hoges, did you not have to up the mains at all, because my 84 GSX 750SE uses 117.5's and it is bone stock.....Comment
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Yep, still std main jets then. Seems to go okay with great mid range. Top speed wise, most I've run out to is 180KPH. There was more to go there, but it was close to topping out I think. Small little furry things that live in the bush here have a habit of trying to cross the road at the same time as when vehicles drive by, so it makes me nervous!
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