You're probably onto something there Danford1. I was thinking about grip and putting down the largest contact patch possible, but I was also hoping to benefit if even just slightly from this tires extra 1/2"- 3/4"diameter over that pocket bike street tire, even though they're supposed to be the same size. It also doesn't hurt that it looks the business too, as I always view form as important as function on these things... But if I'm slower because of it, now is not the time to give 2 shits about form. Maybe I will try to test with the street tread tire for a minute tomorrow, and see if I can feel any difference with that same gear? Unfortunately I don't have any way to time it to figure out for sure and am running out of time. Just the old butt dyno. I mean, I can make it crack the rear tire loose, but it's not a common occurrence or an issue, so...?
It did respond well to my jet change this morning. I downsized both the pilot and main jet all the way down to a .020 pilot and a .034 main. That's only 2 small sizes up from stock in a built stainless valve 212 with a ported head and big bore carb! Now it feels a little more snappy and ain't bucking and surging on the big end like it was.
That's altitude for you! In my milder built Hemi, I run a stock carb with only a .018 pilot and .032 main. I'm at just over 6,000 ft elevation. Denver is 7-800' lower at 5280. So if you're in The Mile High and wonder why your Predator feels like you re-installed your governor after you put in that big new .036-.037 jet and GX140 emulsion tube, it's cuz your too damn rich! I don't bother with those damn GX140 emulsion tubes either. No benefit to me here whatsoever.
It did respond well to my jet change this morning. I downsized both the pilot and main jet all the way down to a .020 pilot and a .034 main. That's only 2 small sizes up from stock in a built stainless valve 212 with a ported head and big bore carb! Now it feels a little more snappy and ain't bucking and surging on the big end like it was.
That's altitude for you! In my milder built Hemi, I run a stock carb with only a .018 pilot and .032 main. I'm at just over 6,000 ft elevation. Denver is 7-800' lower at 5280. So if you're in The Mile High and wonder why your Predator feels like you re-installed your governor after you put in that big new .036-.037 jet and GX140 emulsion tube, it's cuz your too damn rich! I don't bother with those damn GX140 emulsion tubes either. No benefit to me here whatsoever.
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