edelbrock 800 cfm carburetor users
#2299266
05/05/17 12:06 AM
05/05/17 12:06 AM
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Joined: May 2005
Posts: 304 Enfield, Ct
Moe
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Enfield, Ct
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a Dozen calls to their tech line, bigger 'Squirter', Drill out squirter. All still no good. Still have the Off Idle Stumble or lean spot coming off of the idle circuit to the cruise mode.
Do the Eddy 650's have this same trouble?
All linkage is set-up for an Eddy. So it best to try another one.
Last edited by Moe; 05/05/17 12:08 AM.
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Re: edelbrock 800 cfm carburetor users
[Re: Moe]
#2299277
05/05/17 12:26 AM
05/05/17 12:26 AM
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Joined: Aug 2005
Posts: 11,543 chicagoland,usa
buildanother
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I Live Here
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I think that strip kit, or whatever they call it might be needed. I had a stumble that was hot or cold, pump shot made no difference, so I made a temporary fix by stretching the springs under both metering rod pistons by just shy of 1/8". That's not the correct fix but it's been there a year now and it drives 99 percent better. It's a vacuum signal thing, 500" 400 block with that 528" solid mopar cam.
Last edited by buildanother; 05/05/17 12:39 AM.
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Re: edelbrock 800 cfm carburetor users
[Re: Belvedere1]
#2299295
05/05/17 12:47 AM
05/05/17 12:47 AM
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Joined: Feb 2003
Posts: 16,162 Mesa, Arizona
dart4forte
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Which hole is the acc pump arm in? Use the top hole. I did a rod and jet change (7147 rod,.116 pri jet,.110 sec jet, raised the float level (5/16) , orange spring, idle screws 2 1/2 turns out.
I have zero flat spots but I do still have a metering rod issue where they bounce up and down at idle when the engine is warm. Switch to the lower springs. Kinda like changing the power valve in a Holley.
Last edited by dart4forte; 05/05/17 12:48 AM.
“So if it’s on the internet it must be true”
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Re: edelbrock 800 cfm carburetor users
[Re: Belvedere1]
#2299312
05/05/17 01:21 AM
05/05/17 01:21 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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recheck the float level (may need to experiment richer) & yes get the strip kit. No vac leak? ported or manifold?
live every 24 hour block of time like it's your last day on earth
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Re: edelbrock 800 cfm carburetor users
[Re: Moe]
#2299843
05/06/17 12:05 AM
05/06/17 12:05 AM
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Joined: Jan 2003
Posts: 15,526 Omaha Ne
TJP
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Step #1. What is the inital timing ? Step #2. If you are using the vaccum advance, which port is it hooked up to ?? Step #3, what is your timing doing (mechanical and vacuum) when you increase the RPM ? Step #4 When warm, off choke etc. Where are the throttle blades with respect to the off idle transfer ports / slots ?
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Re: edelbrock 800 cfm carburetor users
[Re: Moe]
#2299939
05/06/17 08:58 AM
05/06/17 08:58 AM
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Joined: Feb 2010
Posts: 1,645 Phila. Pa.
Mattax
top fuel
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top fuel
Joined: Feb 2010
Posts: 1,645
Phila. Pa.
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Moe, There's some good advice above on how to figure this out. What may help you sift it out is that the carb is NOT coming off the idle circuit when the throttle is cracked open. The off-idle gets more fuel from the transfer ports or slots, but is also fed by the idle circuit. This is why people have posted questions about idle-mix screw sensitivity, timing and throttle position. Chrysler Tech has a decent explanation Carburetion Fundamentals and Facts, 1970 MTSC, p7 Full index Master Technicians Service Conference The idle system responds relatively slowly to changes in manifold pressure. If it stumbles when the throttle is gently opened, then its not likely to be solved with more pump shot. If it only stumbles when the throttle is applied quickly, then its pump shot. A smaller throttle and venturi (ie a 650) will be easier to tune the idle system. All things being equal, manifold pressure will be higher and main systems will start earlier. It may give up power at the top (quarter mile) depending on displacement and rpm.
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Re: edelbrock 800 cfm carburetor users
[Re: Moe]
#2300441
05/07/17 12:17 AM
05/07/17 12:17 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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Edelbrock calls it a calibration kit, not a strip kit.
[url=Here at summit]http://www.summitracing.com/search/brand/edelbrock/department/air-fuel-delivery/section/carburetors-accessories/part-type/carburetor-calibration-kits?N=400065%2B4294951509%2B4294949628%2B4294921314[/url]
Last edited by Supercuda; 05/07/17 12:18 AM.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: edelbrock 800 cfm carburetor users
[Re: Moe]
#2334331
07/09/17 09:25 PM
07/09/17 09:25 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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that's great. enjoy. (K.I.S.S. sure works)
live every 24 hour block of time like it's your last day on earth
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Re: edelbrock 800 cfm carburetor users
[Re: Mopar1970440]
#2334333
07/09/17 09:31 PM
07/09/17 09:31 PM
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Joined: May 2005
Posts: 304 Enfield, Ct
Moe
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enthusiast
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OP
enthusiast
Joined: May 2005
Posts: 304
Enfield, Ct
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anyone try one of Thompson performance power blast plates yet? Thinking about putting one on my carb when I get my truck running again. Just saw this. It peaked my interest http://www.thompsonperformance.com/
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