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Post by kornsk8rmjj on Mar 31, 2013 21:39:56 GMT -6
Just a quick question, I have an 86 454, I removed the airbox, put on foam pod filters and took the mufflers off, and I live in az, I was wondering if anybody knows offhand about wut size jet to jump up to to get it running rite again, like everyone else I've seen, after doing these mods it doesnt wanna go past 3k, thanx for any help
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Post by Blaine on Mar 31, 2013 22:49:36 GMT -6
Welcome to the forum.Knowing what jet you need is different for each application. Usually go up 3 or 4 sizes and start from there.You will need first shim your needles as they control your mid-range.Your main jet only effects 3/4 to wide open throttle.
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Post by kornsk8rmjj on Mar 31, 2013 23:02:56 GMT -6
thank u, I've seen people say to go up a whole 5 sizes if they have the pods and exhaust mods, but I guess I'll adjust the needles first and go from there
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Post by kornsk8rmjj on Apr 1, 2013 12:12:53 GMT -6
So I shimmed the needles with 2 washers and that helped but its still not going all the way to redline without stuttering, guess I'll have to get bigger jets, lol
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Post by Blaine on Apr 1, 2013 14:26:02 GMT -6
So I shimmed the needles with 2 washers and that helped but its still not going all the way to redline without stuttering, guess I'll have to get bigger jets, lol Check youe plugs to see if they are white (lean).They probably are.I would go up 4 or 5 numbers & try that.
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Post by eaglerider on Apr 1, 2013 14:46:02 GMT -6
Yep...larger jets....the "stuttering" indicates that the engine is starving for fuel......unless your valves need adjusting, tight valves will not let the engine rev up, also.
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Post by kornsk8rmjj on Apr 1, 2013 19:11:15 GMT -6
So I shimmed the needles with 2 washers and that helped but its still not going all the way to redline without stuttering, guess I'll have to get bigger jets, lol Check youe plugs to see if they are white (lean).They probably are.I would go up 4 or 5 numbers & try that. I just picked up sum 130's, so I'll put those in in the morning after work n see how it does, I'm sure I'll have to play with the mixture screw too
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Post by shadow859 on Apr 24, 2013 15:37:05 GMT -6
could someone post a link with the jets to purchase after mods? with sizes??
also maybe make a tutorial for the "shimming of the needles"
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Post by Blaine on Apr 24, 2013 15:48:49 GMT -6
could someone post a link with the jets to purchase after mods? with sizes?? also maybe make a tutorial for the "shimming of the needles" Size of the jets can be different for each bike.It depends on your area & your bike.Any motorcycle shop in your area should have jets in stock.
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Post by shadow859 on Apr 24, 2013 20:35:35 GMT -6
I live in the appalachain foothills of kentucky USA, I have a guy with a box full of jets coming over tomorrow, says he worked on bikes for three years, hope I get this bike running!
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