what jets for 1985 fxstc ?? opinions please.

ron1978 · Oct 31st, 2009, 04:41 PM

my dad says he's bike has a non cv carb on it, it has a hyper charger on it ,
running a autolite 4265 plug, what jets would you recommend he use? the motor floods easily and fouls plugs regularly, i don't know much about a non cv carb, if any can help it will be apreciated

Buster · Nov 1st, 2009, 09:59 AM

Different locations around the country will dictate jet sizes. Generally speaking, depending on any other engine work done to the motor, cam, exhaust, etc., he probably should be running around a 45 or a 48 slow speed. Sometimes its a guessing game unless you have the good fortune of having a dyno available. Jets for the most part are pretty cheap which allows you to buy a few different sizes, replace and test drive and see which set gives you the best performance.

ultrat · Nov 1st, 2009, 11:02 AM

Non constant volicity like the older bendix carb in early 70s. main jet start at 165 go up from there. Or just pick up on ebay or swap meet a CV carb they were better carbs u will need a slip fit manifold yours probibly bolts to carb good improvement

Oct 31st, 2009, 04:41 PM	#1
ron1978 Contributor$ Ride: Road King Classic Join Date: Sep 1st, 2009 Location: mississippi Posts: 250 My Mood:	what jets for 1985 fxstc ?? opinions please. my dad says he's bike has a non cv carb on it, it has a hyper charger on it , running a autolite 4265 plug, what jets would you recommend he use? the motor floods easily and fouls plugs regularly, i don't know much about a non cv carb, if any can help it will be apreciated __________________ 2005 RoadKing Classic / Touring Package, all the trimming, tons of chrome. stage 1/ vance & hines Duals

Nov 1st, 2009, 09:59 AM	#2
Buster Start The Engine Ride: 2007 Street Glide Join Date: Apr 23rd, 2009 Location: Berwick, Maine Posts: 11	Re: what jets for 1985 fxstc ?? opinions please. Different locations around the country will dictate jet sizes. Generally speaking, depending on any other engine work done to the motor, cam, exhaust, etc., he probably should be running around a 45 or a 48 slow speed. Sometimes its a guessing game unless you have the good fortune of having a dyno available. Jets for the most part are pretty cheap which allows you to buy a few different sizes, replace and test drive and see which set gives you the best performance.

Nov 1st, 2009, 11:02 AM	#3
ultrat Community Star Ride: 2009 flhtcui Join Date: Oct 8th, 2009 Location: south bend indiana USA Posts: 427 My Mood:	Re: what jets for 1985 fxstc ?? opinions please. Non constant volicity like the older bendix carb in early 70s. main jet start at 165 go up from there. Or just pick up on ebay or swap meet a CV carb they were better carbs u will need a slip fit manifold yours probibly bolts to carb good improvement

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what jets for 1985 fxstc ?? opinions please.

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