Re: Engine runs on
[Re: RSNOMO]
#1613996
04/29/14 11:54 PM
04/29/14 11:54 PM
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Joined: Jul 2007
Posts: 1,526 North Carolina
cjskotni
pro stock
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pro stock
Joined: Jul 2007
Posts: 1,526
North Carolina
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Few things come to mind that can cause this: - try more timing, maybe 14-16* initial - running excessively lean causing hot cylinders - richen up mixture - idle speed too high Could be either of these things or some combination thereof. Good luck!
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Re: Engine runs on
[Re: RapidRobert]
#1614000
04/30/14 01:42 AM
04/30/14 01:42 AM
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Joined: Apr 2005
Posts: 12,271 Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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10* initial timing... nope no potential issue there. I run stock 318's with more initial timing! Fix the initial timing to what the engine wants, re-tune the carbs and go from there. It will take some changes to the distributor internals. Simple, grab distributor, twist it a bit CW, if it picks up RPM, it wants the timing. How big of a cam is in this thing?
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Re: Engine runs on
[Re: RobX4406]
#1614002
04/30/14 01:47 AM
04/30/14 01:47 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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I missed that, what Rob said it definitely needs more than 10
live every 24 hour block of time like it's your last day on earth
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Re: Engine runs on
[Re: 71birdJ68]
#1614005
04/30/14 01:59 AM
04/30/14 01:59 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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I'd start with the tried & true "vac gauge" method: keep advancing the timing till you reach max vac all the while reducing the idle speed back to the lowest point it will idle in gear at then reduce the timing till the vac drops (1) in hg & that is the ideal initial timing if it does not kick back when starting. If so you can either add an on/off ign switch & get it cranking with the regular ign switch then switch on the auxillary ign sw so it gets power & will fire or reduce the initial 1 degree & retry and another 1 degree if needed
live every 24 hour block of time like it's your last day on earth
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Re: Engine runs on
[Re: 71birdJ68]
#1614009
04/30/14 12:50 PM
04/30/14 12:50 PM
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Joined: Jun 2006
Posts: 5,165 CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,165
CT
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Carbs are off the idle circuit, more timing, less idle RPM/curb idle adjustment
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: Engine runs on
[Re: GTX MATT]
#1614010
04/30/14 08:31 PM
04/30/14 08:31 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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If it still gives you problems after the tune is right then I would consider an idle solenoid so it can let the throttle close more at key off. Also if its an auto shut the eng off in gear or if its a stick just let the clutch out when you shut the eng off. Just let the clutch out enough to grab a bit and stall the eng. They are not the real world fixes but many hotrods with large cams idle higher and the popping of the clucth or shut it off in gear helps. Ron
Last edited by 383man; 04/30/14 08:32 PM.
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Re: Engine runs on
[Re: 71birdJ68]
#1614012
04/30/14 09:11 PM
04/30/14 09:11 PM
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Joined: Jul 2008
Posts: 259 Khemi, Stygia
Mebsuta
enthusiast
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enthusiast
Joined: Jul 2008
Posts: 259
Khemi, Stygia
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Mine (383 HP) used to run on with lesser grades of gasoline (less than 91 octane). Try the highest grade of gasoline you can get.
Also, the E10 everywhere now helps me. I can actually run 87 or 89 without pinging or running on.
68 Roadrunner. 383 4-spd. Beat up.
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Re: Engine runs on
[Re: 71birdJ68]
#1614013
04/30/14 11:44 PM
04/30/14 11:44 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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Quote:
Where can I find one of those solenoids?
I ain't sure what year(s) they came on. An ad in the wanted section(s) here would likely produce a good used one. EDIT Or eBay might be faster
Last edited by RapidRobert; 04/30/14 11:46 PM.
live every 24 hour block of time like it's your last day on earth
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