460 problems January 15, 2007, 02:05:57 AM first off, my motor pinged quite abit, but only at about 4000 RPM, my motor devloped an intkae leak, so i pulled my intake, and upon re-installation, broke off a bolt going back into the head, got all mad, and decided that was the time to beuild my motor, it was due anyways,5000 $ later, and 2 years later, it's back on the road, only, with the same problem it still pings !!! but worse, it kicks in at about 1200-1500, with WOT and about 2000 under light accl.i've tryed every thing, from backing out the timing, to a different carb, to having NO vaccum advance, nothing works, no matter what, W/O Vacc. Adv. it's running about 23* around 2500 RPMW/ Vacc. Adv. it's running about 43* around 2500 RPMis this a distb problem or what ?! i hate this truck starting about now.. it's been an on going money pit sence i took of the intakePlease help me !! Nick Quote Selected
460 problems Reply #2 – January 15, 2007, 04:59:34 PM I've tryed differnet fuels, any where from 5 gallons 112 and 5 gallons 92, to pure pure 92, nothing seems to worki've heard that this may be to far advance in timing, any one know how to adjust these " adjustable " duraspark setups ?! i'm thinking i'm gonna have to get a new distrib, cause it seems to be advance to much.... Quote Selected
460 problems Reply #3 – January 15, 2007, 06:30:51 PM What fuel pump setup do you have? You can have all the octane in the world, if it doesnt make it to the cylinders, it doesnt do you any good. Quote Selected
460 problems Reply #4 – January 15, 2007, 11:46:53 PM What heads and what pistons?We need details Quote Selected
460 problems Reply #5 – January 16, 2007, 12:02:38 AM Need more details. What is the total advance @ 2500 RPM? The duraspark is easly adjustable . Is there a TURBO on the engine as in your screenname? Quote Selected
460 problems Reply #6 – January 17, 2007, 05:54:03 AM 1. Stock mech fuel pump ( never thougt of that, but it's got tons and tons of power, )2. forged pistons and dove heads, 9.5 : 1 comp3. no turbo on the motor, was thinking about it when i made this SN, but never did it in the end ( found out what the real cost of it all was )let's see.....edlebrock performer intake with 750 CFM elct. choke carb (also edle)XE262h Comp cams ....cam.....Weisco forged piston ( i think wisco, that's what i asked for)Msd 6 a box and coil Duraspark distrib. tottal timing is W/O Vacc. Adv. it's running about 23* around 2500 RPMW/ Vacc. Adv. it's running about 43* around 2500 RPMwith or with out vaccum line, it still pings off the line..and from a slow roll heavy stomp i'd belive it's the 43 * degrese thing makin it ping.....so best question is, how do i make it stop pining ?(well i dunno, cause it pings with or without vacc. adv. )what should plug gap REALLY be at ?! i've heard 90 billion differnt, i'm thinkin around 45 ?? ms says 45. - 55 .... so i have no idea,...and ....well it's a truck ...so there's some weight, and it's got like 3.08 gears, it's all high way...but it flys....well...used to ....now all i do is ping well hope that's enough info...lemme know if there's any thing else i can post to help out...any help to me is great help ...i'm about done with this by now....so plz don't let me give up !! NickEDIT : ohh ohh i forgot .....crane cams roller rocker's ...or roller tip rockers....one of the two ... i don't rember....what about adjusting the valves ...that cause any thing, i haven't comp checked it yet, cause i can't find my comp checker....and the plugs....pretty clean for 300 Miles on a new motor..and ....a little soot on one or two, but i've been screwing with the carb setups so, i wouldn't point fingers at the just yet, Quote Selected
460 problems Reply #7 – January 17, 2007, 09:46:32 AM You should have about 12 degrees base timing (idel) and no more than34-36 total (2500 RPM) Every Ford I've had that had a larger than stock cam didn't like the vac advance it adds timing to quick. So set your base @12 you didn't say in your prevoius post what the base timing was? I'll take some pic of a dist and show you how to change the Mech advance in it if your dosen't go to the spec listed above. Don't give up. Just takes time. Quote Selected
460 problems Reply #8 – January 17, 2007, 03:16:36 PM I also think the factory fuel pump might be an issue. Sure itll make a lot of power, up untill it runs out of fuel and starts pinging. Quote Selected
460 problems Reply #9 – January 17, 2007, 06:23:40 PM hand't thought of the fuel pump as a cause, wouldn't think it was an issue, maybe i hook up a elec fuel pump,but timing is my first step, the motor holds up to 5500 or so, so i'm not sure that it's lack of fuel, all this i'm telling you that i'm beating my truck to bits whilist it pinging Quote Selected
460 problems Reply #10 – January 17, 2007, 07:28:47 PM Quote from: 460 turbo truck;1242542. forged pistons and dove heads, 9.5 : 1 comp,Unless they have some deep dishes in the pistons its 10.1 or better with dove-c'sdo a cranking compression test and post the results. Quote Selected
460 problems Reply #11 – January 18, 2007, 06:19:14 PM They are DOVE-A heads, can't do any comp checks for now, cause i can't find my compy checker, At the same time, being a brand new motor with 300 miles on it, it's still better yet a tight motor, running about 10:1 comp.A wise man told me yesterday, to dissconect the vacc. adv, and SET tottal timing to 36*, and see how it runs, at the same time, find out what base idle was, if it's under 5*, then the distrib is screwed..and to huck it out the window of a friends car.i'm on my last steps, before i brake down, and buy a 250 $ distrib. from MSDman-o-man, if i knew it was gonna take me 3 years to put my truck back-together, i woulda had someone else do it Nick Quote Selected
460 problems Reply #12 – January 18, 2007, 09:49:32 PM Quote from: 460 turbo truck;124460They are DOVE-A heads, can't do any comp checks for now, cause i can't find my compy checker, At the same time, being a brand new motor with 300 miles on it, it's still better yet a tight motor, running about 10:1 comp.NickI would stop trying to trouble shoot till you do a compression test.without knowing what kind of cylinder pressure it makes it will be hard to know if it will run on pump gas. Quote Selected
460 problems Reply #13 – January 22, 2007, 04:17:37 AM UPDATE:I continued test and tune, and got MOST of it to stop pinging, i SET the tottal timing to 36* with the vacc. adv. hooked up, base timing is about 19-22 with it setup that way. it's kinda weird becuase if i disscon. the vacc. adv. at idle, the base timing goes down, but if i turn the RPM down more than 50 RPM, it runs like .Base idle is around 760-800, when i drop it into gear, it falls to about 600-650, and so does my base timing, go figure, Still haven't been able to do a comp check, but i'm workin on it, Let me know what yah think ..Thanks Nick Quote Selected
460 problems Reply #14 – January 31, 2007, 03:58:41 AM i've figured out most of my problem, http://www.bob2000.com/dist.htmthis helped me so much, they weight i have is giving it 32* mech adavance on it's own.but something else is screwed up, cause i set the timing to 36* with no vacc. adv hooked up, and the timing only fell to about 19* at an idle. so technicaly, 19* + 32* + 10*(for vacc) = 61* adv at 2800 RPM, go figure this thing is messed up !! uhhhgg i hate this distrib,i also noticed that the dist gear was screwed up, well then pin hole holding it in, had 2 holes one on top of the other, with them both badly worn out.time for the MSD distrib, so i can finnaly get this thing tuned !! goin to the dyno on the 24th of feb, i'll post some picks of my dyno, and maybe a video of my 4" exhaust system !! :D thank god for desel exhaust !! Quote Selected
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