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Stock jetting suggestions?

Old 06-26-2008, 10:12 AM
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Stock jetting suggestions?

Hi all. I'm sorry if this has already been addressed. I've looked over the last few pages and haven't seen it soooooo..

I have a 98. I'm basically at sea level (~200ft above). I have stock exhaust, ignition advancer, drilled airbox, K & N air filter.

PO had aftermarket exhaust that I swapped out and he tinkered with the jetting, but I don't know what he did.

I don't want to go back to the OEM jetting and it's shortcomings. Any suggestions for jetting with stock exhaust?
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Old 06-27-2008, 06:43 PM
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If it's running OK, why change anything?
But if it's any help, I'm at about the same altitude as you are and when I had the stock exhaust and a BMC filter and the PAIR was enabled I used a Factory Pro 1.1 kit. 180/182, needles in the middle slot of five with a .5 mm. washer, 48 pilots, both adj screws set a 1 1/2 turns out. The airbox wasn't drilled and there was no aftermarket ignition advancer.
Truth be told, the stock setup probably would have been OK in my case.
Other people have shimmed the needles to improve performance.
Hawkrider has a great article in the Knowledge Base about carb removal and inspection but the starting point is to identify what's wrong before you change anything.
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Old 06-27-2008, 10:25 PM
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It's not running ok actually... but not badly either. HUGE lean spot from 1500-3500 rpm. hesitates significantly while in that rpm range.

I'm looking to get the best fuel mileage and smooth running conditions.

Got a link to that KB?
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Old 06-27-2008, 10:44 PM
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Just my opinion. If you want to stay with OEM exhaust, the "shortcomings" aren't stock jetting, but a drilled airbox and K&N filter. I'd go with stock jetting, perhaps washers lifting the needles a bit or the equivalent with a jet kit. I'd tape over the holes in the airbox, install an OEM air filter, and sell the K&N to somebody looking foward to pulling and rejetting the carbs 6 or 8 times to get it right with their aftermarket exhaust setup.
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Old 06-28-2008, 06:51 PM
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Go to the bottom right of this page to "forum jump". Click on the chevron pointing down. "Knowledge base" is one of several options.
RK1's suggestion about taping over the holes in the airbox is an excellent one.
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Old 06-28-2008, 10:57 PM
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I will do that asap and see what happens. Thanks all!
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