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318 duster sounds sluggish #1739317 01/26/15 07:46 PM 01/26/15 07:46 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks OP master
deaks OP master Joined: May 2004 Posts: 3,210 robin hood country	I'm just getting my 73 318 Duster ready for the road, i've fitted fresh plugs, timed the engine and had a vac gauge on it but it sounds very laboured. I haven't driven it yet so it might be better when i get it out and run it. The motor is stock other than a alloy intake and 600 holley V/S, it has cast manifolds and a single exhaust which looks around 2", could this be the cork in the bottle ? It also has air con, wow, i've never seen so much junk. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: 318 duster sounds sluggish [Re: deaks] #1739318 01/26/15 08:41 PM 01/26/15 08:41 PM
Joined: Dec 2007 Posts: 18,157 Mass DAYCLONA I Live Here
DAYCLONA I Live Here Joined: Dec 2007 Posts: 18,157 Mass	Time to drop in a 440

Re: 318 duster sounds sluggish [Re: DAYCLONA] #1739319 01/26/15 09:55 PM 01/26/15 09:55 PM
Joined: Nov 2006 Posts: 1,459 oklahoma F forphorty pro stock
forphorty pro stock F Joined: Nov 2006 Posts: 1,459 oklahoma	Quote: Time to drop in a 440 Yep

Re: 318 duster sounds sluggish [Re: forphorty] #1739320 01/26/15 10:28 PM 01/26/15 10:28 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks OP master
deaks OP master Joined: May 2004 Posts: 3,210 robin hood country	In case you hadn't noticed i already have one, the Duster is up for sale and i dont want the buyer to feel too dissapointed. My Dart in my sig was originally a 340 4 spd that ran high 12's in the mid 80's with a hyd cam and mildly ported X heads, so i know sb's can perform just not this one. Lol Are 73 318's really this bad ? Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: 318 duster sounds sluggish [Re: deaks] #1739321 01/26/15 11:18 PM 01/26/15 11:18 PM
Joined: Dec 2007 Posts: 1,357 central Florida VL21 pro stock
VL21 pro stock Joined: Dec 2007 Posts: 1,357 central Florida	Just a suggestion, bump the timing up to where it sounds good to your ear, the later 318s used a different (?) timing method, maybe a dial back, and the timing marks usually don't gibe, at least in my experience. On the current 318 in my D150 the balancer mark is out of sight up under the water pump. Basically, set the timing with a vacuum gauge ... I think mine could stand even a little more advance. It takes gasoline to interest me.

Re: 318 duster sounds sluggish [Re: VL21] #1739322 01/27/15 12:37 AM 01/27/15 12:37 AM
Joined: Jan 2008 Posts: 553 DE Ply72rr mopar
Ply72rr mopar Joined: Jan 2008 Posts: 553 DE	Make sure the distributor�s centrifugal advance is working, if it�s froze up it will be a dog.

Re: 318 duster sounds sluggish [Re: Ply72rr] #1739323 01/27/15 01:13 PM 01/27/15 01:13 PM
Joined: Jun 2005 Posts: 5,112 Western Md. skicker "The Champ"
skicker "The Champ" Joined: Jun 2005 Posts: 5,112 Western Md.	bump it ahead some...it sounds like it's late... ...FAFO...

Re: 318 duster sounds sluggish [Re: skicker] #1739324 01/27/15 02:08 PM 01/27/15 02:08 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks OP master
deaks OP master Joined: May 2004 Posts: 3,210 robin hood country	I've noticed a lot of the guys who race small blocks only run around 32 degrees, i think i set this around 36 but it did sound better with more, i was just worried about detonation. Maybe i should plug the vac advance as well. It shows 20" of vacuum with a dial gauge. What comp is the 73, 8 to 1 ? Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: 318 duster sounds sluggish [Re: VL21] #1739325 01/27/15 03:12 PM 01/27/15 03:12 PM
Joined: Oct 2003 Posts: 782 s.e. MI P partsforsale super stock
partsforsale super stock P Joined: Oct 2003 Posts: 782 s.e. MI	Quote: Just a suggestion, bump the timing up to where it sounds good to your ear, the later 318s used a different (?) timing method, maybe a dial back, and the timing marks usually don't gibe, at least in my experience. On the current 318 in my D150 the balancer mark is out of sight up under the water pump. Basically, set the timing with a vacuum gauge ... I think mine could stand even a little more advance. This.

Re: 318 duster sounds sluggish [Re: partsforsale] #1739326 01/27/15 05:06 PM 01/27/15 05:06 PM
Joined: Jan 2003 Posts: 2,931 P Paul_Fancsali master
Paul_Fancsali master P Joined: Jan 2003 Posts: 2,931	If that engine has 8.0 to one it is lucky Big cork is that Y pipe get a set of magnum or 340 manifold or headers Timing set it for all in at 2,000 and get total as far over 40 degree's as it can handle without talking.Car will wakeup and be sure it is not running too cold run at least a 180 stat.Does car still have dist egr timing delay? Ditch it if it does or work dist to run without it

Re: 318 duster sounds sluggish [Re: Paul_Fancsali] #1739327 01/27/15 07:09 PM 01/27/15 07:09 PM
Joined: Jan 2003 Posts: 10,634 Freeport IL USA poorboy I Live Here
poorboy I Live Here Joined: Jan 2003 Posts: 10,634 Freeport IL USA	The Y pipe is choking it. Even putting dual exhaust on the 318 manifolds will wake it up a lot. When you added the 4bbl, you probably made it worse with the single exhaust. 318s were good motors, they were just choked down. With the right combination of even factory parts, they could run pretty hard. Gene

Re: 318 duster sounds sluggish [Re: poorboy] #1739328 01/27/15 07:21 PM 01/27/15 07:21 PM
Joined: Oct 2006 Posts: 7,371 Iowa burdar Owen's Dad
burdar Owen's Dad Joined: Oct 2006 Posts: 7,371 Iowa	They were factory rated at 8.6 to 1 compression and 150hp. Factory initial timing spec is 0. I've got a 340 cam in mine and I've got the timing at 15 BTDC.

Re: 318 duster sounds sluggish [Re: deaks] #1739329 01/29/15 11:11 PM 01/29/15 11:11 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: Are 73 318's really this bad ? Yes! the 73 model year was the worst of the worst, starting with the gov't mandated emission stds that started in the '68 model year. Carb calibration was way off as was the timing (O tdc ). Ma couldn't keep up with what they wanted. The good news is that with 20 in hg you have a VERY healthy long block & if you are serious about doing something with this engine the first step would be to uncork the ex. Next would be a 75 & up 2bbl carb then tweak the dist subsystems & actually you'd do the timing first then the carb but I would get the carb on there then deal with jetting later & with that high of idle vac your initial sure ain't retarded. the spring with the elongated slot on one end has to go. total at 35 then springs & the next (minimally invasive) step if you wanted to go further would be degreeing the cam/tchain & seeing where it is at and if you change/rephase the cam then the dist timing needs changing to be spot on (if you decide to play with the cam/tchain). Cap the EGR & run the vac directly from carb to dist. The actual CR is in the 7's which is another reason I am surprised your idle vac is that good live every 24 hour block of time like it's your last day on earth

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