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Re: Keep Fouling plugs....need help
[Re: moparrulzzz]
#1301668
09/12/12 02:18 PM
09/12/12 02:18 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
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Ontario, Canada
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You need to check your spark poor spark will allow plugs to foul. Quick compression check can't hurt. Your harmonic is verified at TDC?? was the cam degreed in and where? I'm really thinking it is poor ignition spark. Do you have another carb to try?? you could throw the new coil on quick to try. good ballast connections I had similar problem once with a poor connection. You could try a double mail spade to jumper/bypass the ballast for a short period to see if it clears up with a hotter spark??? Seems puzzeling but my gut feels spark. 
Last edited by Dodgem; 09/12/12 02:19 PM.
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Re: Keep Fouling plugs....need help
[Re: Cab_Burge]
#1301670
09/12/12 04:28 PM
09/12/12 04:28 PM
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Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
moparmarks
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Quote:
OP, are the fouled plugs shiny or dull  Post a picture of them, if you can  Shiny is oil, dull is no oil  To much fuel or oil can and will foul plugs  Oil can be suck into the combustion chamber several different ways, one common one on B and RB motor, especailly freshly rebuilt ones, is from the intake valley pan 
True but he stated that the exhaust was fuel smelling eye burning black smaoke. Not oil burning blue smoke.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: Keep Fouling plugs....need help
[Re: Dodgem]
#1301671
09/12/12 04:32 PM
09/12/12 04:32 PM
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Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
moparmarks
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I Live Here
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Yes Dodgem but he has 34* of initial timing and what I'm gathering is no advance?
Thats not going to work. Would think he'd have alot of pinging going on too.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: Keep Fouling plugs....need help
[Re: radar]
#1301672
09/12/12 04:43 PM
09/12/12 04:43 PM
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Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
moparmarks
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I Live Here
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Quote:
I'll give it a shot for a dumb down version.
The more radical your engine the more initial timing can benefit your idle RPM and crispness. If you go too far advanced you will have trouble with starter kickback and slow hot starts. There are several strategies to deal with this in a street car the simplest is don't set it too high. After you figure out what initial (idle) timing you want to run you can set the total for a reasonable number and possibly fine tune it at the track. Stock distributors are set to a wider spread so they need to have slots shortened inside. Different aftermarket units use different methods.
Once your timing is good you can tune the carb. Hopefully it's in the ballpark so you can get the timing! On a holley style carb the circuits 'stack' up. As you open the carb more fuel flows out of different spots.
At idle the fuel emulsion (pre mixed with some air) comes from a small hole below the butterfly and also from the bottom of the transfer slot exposed below the blade. You want to keep the t-slot exposed under there small, looking like a square. Then tune for highest vacuum with the idle corner screws.
As the throttle opens the transition slot begins to flow, and then the mains. If it is opened fast enough you will shoot the accelerator pump to cover a lean spot as the fuel begins to flow. Drop the vacuum enough and the power valve will flow too.
A holley is pretty easy to tune for racing. For street driving the more time you spend driving like a normal person the more the carb is unnecessarily rich. If you drive like them Duke boys you'll be fine. Thats why some people want you to follow them to a race- they know boppin around will foul out your plugs and your rig will run like poop...
Thats a pretty good write up. Would have taken me an hour to type all that.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: Keep Fouling plugs....need help
[Re: CUDA8U]
#1301673
09/12/12 04:52 PM
09/12/12 04:52 PM
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Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
moparmarks
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I Live Here
Joined: Nov 2003
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Quote:
Quote:
Quote:
I believe at idle it is at 34*
I doubt that if it has springs in it.
If it smells like a fuel factory out the tailpipes, it's not close...
I wouldn't mess with anything else until you know where the idle/initial timing is set.
If you reach in at idle and twist the distributor clockwise and it picks up RPM, it want the timing you just twisted in.
really? any time you can turn the dist.and the rpm increases your engine wants more timing?
He is stating that if you have it set at full initial timing then that is the max rpm you'll get out of the dist. adjustment.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: Keep Fouling plugs....need help
[Re: RobX4406]
#1301675
09/12/12 08:53 PM
09/12/12 08:53 PM
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Joined: Feb 2003
Posts: 1,679
Mansfield,Ohio
moparrulzzz
OP
top fuel
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OP
top fuel
Joined: Feb 2003
Posts: 1,679
Mansfield,Ohio
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Quote:
At idle it has 34*?
Don't rev it at all, just point the light and read what it says when idling.
Float bowl level set properly, no fuel dripping in from the boosters on your carb?
Another thing to do, remove the cap and see if the rotor will move clockwise. That's the advance mechanism.
If you have a vacuum gauge, use it to set the idle mixture screws, sides of metering blocks. You want the highest vac where those screws are furthest in, evenly set on both sides. You should be able to run them in and kill the engine.
Rob I never seen your response. Just pointing the light at idle its at 34* Revving it retards back 1-2*
Sight glass has the fuel 1/2 way, ne leaks at at all..I do know the front idle mixture screws are 2 1/2 turns out and the rear are 2.
The rotor will not budge clockwise but will counter clock wise
Tomorrow I will go out with the vacuum gauge and see what I can do. Should I put new plugs in or use the fouled out ones?
Thnx!!
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Re: Keep Fouling plugs....need help
[Re: moparrulzzz]
#1301676
09/12/12 08:59 PM
09/12/12 08:59 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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BB dizzys advance CC and run CC ??? so how much does it move but if it stays a 34 idle to 2500 a little retard is normal as slack get taken up in things??
Last edited by Dodgem; 09/12/12 09:00 PM.
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Re: Keep Fouling plugs....need help
[Re: Dodgem]
#1301677
09/12/12 09:01 PM
09/12/12 09:01 PM
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Joined: Feb 2003
Posts: 1,679
Mansfield,Ohio
moparrulzzz
OP
top fuel
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OP
top fuel
Joined: Feb 2003
Posts: 1,679
Mansfield,Ohio
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Quote:
You need to check your spark poor spark will allow plugs to foul.
Quick compression check can't hurt.
Your harmonic is verified at TDC??
was the cam degreed in and where?
I'm really thinking it is poor ignition spark.
Do you have another carb to try??
you could throw the new coil on quick to try. good ballast connections
I had similar problem once with a poor connection.
You could try a double mail spade to jumper/bypass the ballast for a short period to see if it clears up with a hotter spark???
Seems puzzeling but my gut feels spark.
I don't know how to verify harmonic is TDC
Cam was not degree'ed builder didn't think I would be making enough power to see a difference.
I have no other carb to try.
I checked the spark and it was blue with the occasional burst or brightening with orange.
I checked all wiring when I thought I had a voltage regulator problem and causeing the miss.
Ans on a side note my engine is noisy, sounds like valve train, could I be hearing pinging??
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Re: Keep Fouling plugs....need help
[Re: Dodgem]
#1301678
09/12/12 09:02 PM
09/12/12 09:02 PM
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Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
moparmarks
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I Live Here
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I've had some use with cams such as this but, no not a whole alot. Last was a sb 427 Chevy stroker w/ Howard roller cam. Even though yes I like initial about 22* at 800rpm and total of 32-34* around 1200 rpm.
Maybe that I live at about 5000' could have something to with this?
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: Keep Fouling plugs....need help
[Re: moparrulzzz]
#1301679
09/12/12 10:32 PM
09/12/12 10:32 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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WOW you have to degree a cam now days with production tolerances dot to dot can be out as much as 20 degree 2 or 3 make a big difference on a tight 108 LSA cam To check your harmonic O/TDC line with heads on you need to buy or make a piston stop. On compression stroke or better valve train off driver side turn up from BDC till piston stops agains stop mark balancer then reverse back to stop and mark balancer again 1/2 way between the two marks is true 0 TDC. you can buy one of these http://www.summitracing.com/parts/CRN-99412-1/or make one out of a gutted spark plug taping it out with 3/8 threaded rod or a bolt with threads cut to head.  IS it a stock damper or nicely new??
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Re: Keep Fouling plugs....need help
[Re: moparmarks]
#1301681
09/12/12 10:39 PM
09/12/12 10:39 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Quote:
Yes Dodgem but he has 34* of initial timing and what I'm gathering is no advance?
Thats not going to work. Would think he'd have alot of pinging going on too.
I'm confuse on to weather he has mechanical advance or is locked out?? Said Mopar performance springs so at 1000 neutral idle it would be close to full advance.
wonder what he has at 2000?
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Re: Keep Fouling plugs....need help
[Re: Dodgem]
#1301683
09/12/12 10:55 PM
09/12/12 10:55 PM
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Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
moparmarks
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
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Quote:
Quote:
Yes Dodgem but he has 34* of initial timing and what I'm gathering is no advance?
Thats not going to work. Would think he'd have alot of pinging going on too.
I'm confuse on to weather he has mechanical advance or is locked out?? Said Mopar performance springs so at 1000 neutral idle it would be close to full advance.
wonder what he has at 2000?
He stated than the timing retarded 1-2* with rpm increase. Is that how a locked out distributor works? I've never ran one so you'd know better than me. The mechanical advance ones that I have ran usually had around 6-8* of advance.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: Keep Fouling plugs....need help
[Re: Dodgem]
#1301684
09/12/12 10:55 PM
09/12/12 10:55 PM
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Joined: Feb 2003
Posts: 1,679
Mansfield,Ohio
moparrulzzz
OP
top fuel
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OP
top fuel
Joined: Feb 2003
Posts: 1,679
Mansfield,Ohio
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Quote:
WOW you have to degree a cam now days with production tolerances dot to dot can be out as much as 20 degree 2 or 3 make a big difference on a tight 108 LSA cam
To check your harmonic O/TDC line with heads on you need to buy or make a piston stop. On compression stroke or better valve train off driver side
turn up from BDC till piston stops agains stop mark balancer then reverse back to stop and mark balancer again 1/2 way between the two marks is true 0 TDC.
you can buy one of these
http://www.summitracing.com/parts/CRN-99412-1/
or make one out of a gutted spark plug
taping it out with 3/8 threaded rod or a bolt with threads cut to head.
IS it a stock damper or nicely new??
Brand new Damper
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