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Re: ubly results
[Re: mopar dave]
#745391
07/16/10 03:32 PM
07/16/10 03:32 PM
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Joined: Feb 2005
Posts: 5,221
Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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Quote:
went to a size hotter plug(ngk r5671a-7),i had autolite (ar3934) and jetted 4 jets leaner and went for a 5 mile ride down 75 and it felt great. no popping or surging and ran clean,it sounded crisp and clean. heres a pic of the #1 plug when i got back.
Told Ya!! Plug looks alot better, I should be the one to talk about leaning out in the heat  , i'm still running fat & my plugs are Dark, i need to lean mine out, Now what you should do is go back to that colder plug, its best to run as cold as possible without fouling 
Dave, whats your compression? You may want a -8 if its 11.5-12.5, but thats with iron heads, Try jetting down a bit more like 2 & 2, that plug looks really good, but still a tad rich, you'll know/feel if you went too far, it just won't pull quit as strong, then just jet back up, of coarse track testing is best, but if you know how your car feels (which you should), it won't be hard to notice the differences 
Last edited by joedust451; 07/16/10 03:41 PM.
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Re: ubly results
[Re: mopar dave]
#745393
07/17/10 09:04 AM
07/17/10 09:04 AM
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Joined: Jan 2003
Posts: 4,058
Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,058
Shelby Twp. Mi
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Quote:
the scoop catch'es the air but barely. heres a pic.
Excellant work with pic. Now you know you have a variable if/when you are chasing jetting anomalies and ultimately performance. Now if you factor-in the lift the hood sees at speed you may be ok, MAY, I say. The worst scenario would have the airstream siphoning air from the scoop/carb but, you should be ok, SHOULD. Have I beat a dead horse enough? LOL. For certain, (8 o'clock day one!) I would seal or at least isolate the carb from the incoming radiator air (mixture).
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Re: ubly results
[Re: mopar dave]
#745395
07/18/10 11:05 AM
07/18/10 11:05 AM
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Joined: Aug 2008
Posts: 941
Texas, USA
ChrgrCuda
super stock
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super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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I have the same car as you, same hood. I took some sheet metal from a fellow dirt track racer, don't recall the thickness, but it's pretty thin. Cut it square, made template for carb and drilled holes for the bowl screws. Then bought some aluminum angle from Home Depot, riveted to the sheet metal. Also riveted my bottom piece of air cleaner to the sheet metal. Bought the Moroso foam, cut and glued to length. I'll try to take some pic's this afternoon.
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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