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12.5 at wot with a non intercooled roots setup will be a recipe for a burn down. He needs to be quite a bit richer at wot . Us heavy vee bottom guys need to be able to stand on it for minutes, not seconds.
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Originally Posted by MILD THUNDER
(Post 3988820)
12.5 at wot with a non intercooled roots setup will be a recipe for a burn down. He needs to be quite a bit richer at wot . Us heavy vee bottom guys need to be able to stand on it for minutes, not seconds.
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Originally Posted by Skatermac
(Post 3988818)
I said 14.7 at an idle his wot AFR will be 12.5. The info he posted to start with confirms this. Most stock carbs lean out under power someone spent a lot of time to correct that problem on his setup so why send him down the wrong road????
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I`m sorry man but the idle air circuit has nothing to do with primary or secondary jetting or any AFR numbers above idle. Ive got it as lean as it will go without dying when shifted and its at low 12`s at idle.. 14.7 aint happening.
Was hoping someone with some actual carb tuning experience would have chimed in (not counting Mild or Tkat of course) no biggie, we`ll get this figured out. I`m going to restrict the fuel dump thru the power valve at 4K and see what happens. The advice I got from Nickerson today was to add a secondary power valve.. umm ok cause the primary valve fuel dump just wasn`t enough?? :picard1:
Originally Posted by Skatermac
(Post 3988825)
If you tune the engines right you don't need 6 LB of boost anyway. .
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Originally Posted by Skatermac
(Post 3988825)
I agree if your running the wrong spark plugs and the timing is locked out. Running across Biscayne bay from Miami to Gilbert's at 150 plus takes a little more than a few seconds. If you tune the engines right you don't need 6 LB of boost anyway. Heat soaking an engine will kill any engine and fixing with to much unburned fuel will make it an oil burner in less 20hrs.
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Someone should tell Tatermac that he forgot to log off and now his 15 year old is giving out engine advice on the interwebs..:lolhit:
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SKATERMAC,im always trying to learn,what engines do you have in your skater,and can you give some info,like what type of power adder and what your total timing is set at?
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Originally Posted by mike tkach
(Post 3988829)
please tell me how your,or any boat can run for hours at 150 mph with less than 6 lbs boost.
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:QUOTE=ICDEDPPL;3988834]Someone should tell Tatermac that he forgot to log off and now his 15 year old is giving out engine advice on the interwebs..:lolhit:[/QUOTE]
well that is some funny chit right there:poopoo: |
I think he is in the piston business
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