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John, You are probably doing it right, but the fixed orifices may be for a lower hp engine. Not a big difference but enough to nag you. Bob Parker Mena, AR. ----- Original Message ----- From: "John Cooper" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Tuesday, August 21, 2001 9:39 AM Subject: Re: [COUPERS] Stromberg Carburetor Problems | ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- | | In a message dated 8/19/01 6:04:13 PM Mountain Daylight Time, | [EMAIL PROTECTED] writes: | | > The engine developed the most power at 6 turns | > (2250 rpm static) however, it was still balky to start when warm. I | finally | > settled on 7 1/2 turns, and the engine started with no difficulty after | > sitting for 40 minutes. | | Maybe I just don't understand what you're saying, or maybe you're talking | about a carb with which I am not familiar, but if you're talking about the | run of the mill Stromberg found on C75/85/90's then the only mixture screw is | the low speed adjustment which should have NO affect on high power | operations. If it does, then there's something really wrong with your carb. | Once the throttle plate is more than just a little open, there's no real | pressure difference across the low speed ports, and thus no significant fuel | flow is expected. Could be that by opening the screw an excessive amount, | you've somehow added some fuel, which would indicate there's a problem with | the main jet circuit. Over about 1200 RPM the engine should run completely | on the (fixed, unadjustable) main jet. | | Sounds like it's time to bite the bullet and send it to someone who really | knows Strombergs. | | John | | | | | | ==^================================================================ EASY UNSUBSCRIBE click here: http://topica.com/u/?aVxiLm.aVzvvT Or send an email To: [EMAIL PROTECTED] This email was sent to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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