Re: Edelbrock 1411 lean issues on 440
[Re: chermik1999]
#1832364
05/22/15 06:25 PM
05/22/15 06:25 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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I had a 1406 on a stock 350 horse 440 in a C boat (came that way) & ran flawless. not sure if they richened it as 1406's are lean but 1405's are richer so you'll be fine (at least on the mains). post how it turns out
live every 24 hour block of time like it's your last day on earth
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Re: Edelbrock 1411 lean issues on 440
[Re: chermik1999]
#1833636
05/25/15 01:34 AM
05/25/15 01:34 AM
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Joined: Oct 2014
Posts: 61 Alberta, Canada
chermik1999
OP
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OP
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Alberta, Canada
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OK...here's one plug as they all look the same. I just changed them for NGK short as these seemed to be very long. ???? Now, I did put on the 1405 and even worse, AFR 29-30 at idle. So checked timing again. at idle 12 deg, at 2000 rpm - 35 deg mech. At 18 deg idle even worse. So this dist is literally junk.....I have read Procomp has many issues. And Skip White doesn't reply. So no worries...the MSD is going on tomorrow. So i'll keep trying tomorrow.
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Re: Edelbrock 1411 lean issues on 440
[Re: chermik1999]
#1833690
05/25/15 07:15 AM
05/25/15 07:15 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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OK...here's one plug as they all look the same. I just changed them for NGK short as these seemed to be very long. ????
You got a lot of problems if that plug is indicative of all 8. TOO RICH, your afr reading is plain wrong, period. Find somewhere else to take it, the tail pipe is not cutting it. Too long, if that much of the plug is exposed inside the combustion chamber you have issues. I suspect your timing problems are self induced as well.
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 1411 lean issues on 440
[Re: chermik1999]
#1834325
05/26/15 02:10 AM
05/26/15 02:10 AM
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Joined: Oct 2014
Posts: 61 Alberta, Canada
chermik1999
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Alberta, Canada
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Well got new MSD installed. Funny thing. I cant start the car now with the ign switch. Have to turn the switch on and use a started button....guess I need a switch now. Here's a New plug with a run on it. So yuup....super lean. But still smells dog rich...eye burning. So have to put in a few springs as the dist needs recurve. Vacuum gauge says eng likes 20 deg initial. But at 3000 rpm max mech advance is 25 deg, so got to bump that up. May start to fix my AFR problems. Also will weld in a bung and get that O2 in the pipe not the tip. Stills works fine on newer vehicles from the tip, so I don't know. Ideas..... [img:left] [/img]
Last edited by chermik1999; 05/26/15 02:15 AM.
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Re: Edelbrock 1411 lean issues on 440
[Re: chermik1999]
#1834417
05/26/15 11:14 AM
05/26/15 11:14 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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l got new MSD installed. Funny thing. I cant start the car now with the ign switch. Ideas..... Like any box the MSD would need to be fed in ign2 (crank) also which is sounds like ain't being done (check how you have it wired). Not sure if it is gassy from extremely rich or if you are smelling the unburned mixture from a lean misfire. I'm thinking the 1st one. I'd block the rods up or screw in a gutted PV (removing the spring from a junk one might work??) which would I would think help if it is a lean misfire (wouldn't take long/easily reverseable)
live every 24 hour block of time like it's your last day on earth
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Re: Edelbrock 1411 lean issues on 440
[Re: chermik1999]
#1834848
05/26/15 09:47 PM
05/26/15 09:47 PM
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Joined: Oct 2014
Posts: 61 Alberta, Canada
chermik1999
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Alberta, Canada
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OK...went from this this morning [img:left] [/img] to this now [img:left] [/img] So getting better. I put the 750 back on with #29 jet/rod combo. Still was lean so kept the jet and changed for 70x37 instead of 73x42 rods. So better but still lean misfire. Not as bad on the eyes and better on AFR like 20-23 now but still smells rich. So again the AFR meter is working....reading what Im doing for sure at the tailpipe with adapter. So I need a big carb....this one has a lot of slop in the throttle body and losing between 50-90 rpm when playing with it. So vacuum diff of 5hg. That's done I believe. The 800 is like an older webber design and I think it has issues in the circuitry, so next step? I think new carb to start, but im wondering about the Demons? How do you guys feel and what size. I think this motor needs an 800??? Ideas......
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Re: Edelbrock 1411 lean issues on 440
[Re: chermik1999]
#1835170
05/27/15 11:25 AM
05/27/15 11:25 AM
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Joined: Jan 2003
Posts: 12,277 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,277
Benton, IL.
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Bring the cylinder with low compression up to TDC on the compression stroke. Rig up a way to get air pressure into that cylinder, 50 lbs +/-. Then listen in the tail pipe, carb, and valve cover breather for the air.
Quick and easy way to determine if the comp loss is past the cylinder or a valve and will indicate what the fix will likely entail.
A modest loss of compression can cause a miss at idle and then not be as noticeable as RPMs increase.
Master, again and still
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