Blower with Carb questions
07-10-2017, 11:47 PM
#13
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you sure its flooding out, and not leaning out? Does is sneeze/backfire thru the carbs?
I'd hold off on calling Nickerson. Best to do that when you get your tax refund in the spring. Youll need that, and a few months to get the carbs dialed in after he butchers them up.
I'd hold off on calling Nickerson. Best to do that when you get your tax refund in the spring. Youll need that, and a few months to get the carbs dialed in after he butchers them up.
07-11-2017, 01:03 PM
#14
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502 with 10-71 blower/intercooler twin 750 carbs on top. Jet size is 74/84 with 4.5 Power Valve. Set timing on stand, installed in boat and when in gear at 2800-3200 engines will flood out. PV is not boost referenced. 7 psi at the regulator. A1000's feeding aeronotive regulators....I'm no carb expert and am thinking my PV are set to low? Any help is appreciated
07-11-2017, 06:02 PM
#15
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You fouling plugs at that rpm? Also what plugs are you running?
i would take that tax refund though and put towards some larger boost referenced carbs. 10-71's with 750's? Just a thought. With the 088's you may not see a lot with lot of work or aftermarket replacement.
Im betting PV size.
i would take that tax refund though and put towards some larger boost referenced carbs. 10-71's with 750's? Just a thought. With the 088's you may not see a lot with lot of work or aftermarket replacement.
Im betting PV size.
Last edited by getrdunn; 07-11-2017 at 06:11 PM.
07-11-2017, 06:28 PM
#16
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Nothing like having an OP disappear for a bit to answer some questions. 
07-11-2017, 08:11 PM
#17
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Sorry guys, wasn't getting any email alerts. For sure flooding out, set needle and seats with boat at rest in the water. 100% sure it's flooding, plugs are wet. As I accelerate to get onto plane and hold at 3k the boat runs there for 10secs or so, slowly lose rpm and then motor does. Blowers are obviously way to big for the 502's, my thought was the blower was pulling the pPV's open to soon and flooding it out.
07-11-2017, 08:13 PM
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07-11-2017, 09:33 PM
#20
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What 10-71's you have and how fresh are they? Just curious. I would have your carbs looked at and gone through by speed shop per your application. You decide to downsize to fresh tbs 8-71's let me know. Regardless what way your u go I'd definitely have a good trustworthy carb guy check your carbs out.
Last edited by getrdunn; 07-11-2017 at 09:36 PM.
