NEED HELP GUYS

Need help with your car?

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84foxbox
Posts: 275
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Location: ottawa ks
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NEED HELP GUYS

Post by 84foxbox » Wed Apr 19, 2017 10:02 pm

As you all may have seen my car came apart on the line last weknd in the burnout box at 6500rpm's and It was the rotor came apart and beat up the cap. I pulled the distributor out to inspect it with dad and we both agree it looks fine without digging into it. I put it back in and took it to us36 Raceway tonight and couldn't get but 100ft run then it would pop.bang hard.. it's not lean pop because I started at 40° then 35° now it's at 30° and same results every pass. If this has happened to anyone please help. I want to get out and race sunday..

Call me if you can help I need a fast advice to check or fix..

Thanks Mokan family
1984 Ford Mustang GT (sbc) 6.48
2004 Dodge Ram 3500
2011 Ford Fusion Sport
1979 Ford F100 custom

mbark
Posts: 270
Joined: Sat Oct 12, 2013 9:12 am
Location: Sarcoxie Mo

Re: NEED HELP GUYS

Post by mbark » Thu Apr 20, 2017 3:26 am

I've had the mechanical advance come apart and do that. Does it advances the timing still when you raise rpm?
SMC Racing
87 S10 SBC:::::::85 S10
10.94---1/4::::::::406 SBC
123-MPH:::::::::::108-MPH
1.5---60ft::::::::::::1.29---60ft.
6.90---1/8:::::::::::6.20---1/8.

hoggieman racing
Posts: 906
Joined: Tue Jun 07, 2005 8:04 am

Re: NEED HELP GUYS

Post by hoggieman racing » Thu Apr 20, 2017 8:00 am

Locked Out. Thanks. We will know more when we can get more of a look. Any help appreciated.
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Travis Horton
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Joined: Thu Jun 09, 2005 10:22 pm
Location: Pittsburg, KS

Re: NEED HELP GUYS

Post by Travis Horton » Thu Apr 20, 2017 10:12 pm

On an MSD distributor I had the weld on the threaded stud break that lets you lock the the timing. Started and ran fine until you put the hammer down.
1962 Chevy Bel Air 409 1961 Chevy Impala 348
Mr. T doesn't break wind... he destroys it.

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OLD YELLER
Posts: 1542
Joined: Sun Dec 21, 2008 11:36 am
Location: Oswego,KS

Re: NEED HELP GUYS

Post by OLD YELLER » Fri Apr 21, 2017 7:49 am

was the timing still set right after your test pass? I've seen the roll pin in the gear break and the shaft be slipping some in the gear... :layrubber:
The older I get, the better I was.....

hoggieman racing
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Joined: Tue Jun 07, 2005 8:04 am

Re: NEED HELP GUYS

Post by hoggieman racing » Fri Apr 21, 2017 7:32 pm

Looked at the roll pin tonite, it was good. Checked everything, lash, carb, distributor again, stabbed it back in, got her goin, ran with a few misses but cleaned up pretty good. Think shes good to go. Thanks again.
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84foxbox
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Re: NEED HELP GUYS

Post by 84foxbox » Sat Apr 22, 2017 11:59 am

Changed plugs after all that hoping that could have been a issue also.. only a time slip will tell now!! Thanks all!
1984 Ford Mustang GT (sbc) 6.48
2004 Dodge Ram 3500
2011 Ford Fusion Sport
1979 Ford F100 custom

amcamx
Posts: 97
Joined: Sat Aug 13, 2011 6:21 pm

Re: NEED HELP GUYS

Post by amcamx » Sun Apr 23, 2017 11:15 am

It may not be fixed, and these type of problems can be hard to figure out.
It is firing, good, but to the wrong cyl, bad.
Plug wires can short out, one to another.
Moisture in the cap, can carbon track, and cause the wrong cyl, that is not under comp, to fire.
The gap, between the reluctor, and the pickup, should be maybe .008, and checked with a brass gauge.
If a steel gauge is used, it may cause the reluctor to be magnetized, which could cause problems.
Holding it, on a running alternator, may clean it up.
The pickup, may have the correct gap, and resistance, but still be gad, and cause it to fire wrong.
The advance is locked down, good, but where, could be bad.
The question is, is the rotor, aligned with the correct post, when it fires.
You cannot see it, unless a hole is drilled in the cap, and checked with a timing light.
Where the advance is locked down, can maybe be used to align it.
Some racers drill holes in the cap, to vent out the ozone gas, but not in the top.

amcamx
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Re: NEED HELP GUYS

Post by amcamx » Sun Apr 23, 2017 12:08 pm

Ok, so much for plan a, now odds wise, it is b.
If the problem happened, out of the clear blue sky, and nobody messed with the motor, and the problem happens above a certain
rpm, it is an inner broken valve spring.
You would not want to know, about plan c.

hoggieman racing
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Re: NEED HELP GUYS

Post by hoggieman racing » Sun Apr 23, 2017 8:01 pm

You have WAY to much time on your hands AMC. Dont ever seem to have those issues, but I dont drive an AMC! :nice: Thanks Brother, See you at the track!
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84foxbox
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Re: NEED HELP GUYS

Post by 84foxbox » Tue Apr 25, 2017 5:46 pm

Just layed down over 100ft of black Marks out in front of the house. I'd say it's a success!!!
1984 Ford Mustang GT (sbc) 6.48
2004 Dodge Ram 3500
2011 Ford Fusion Sport
1979 Ford F100 custom

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OLD YELLER
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Joined: Sun Dec 21, 2008 11:36 am
Location: Oswego,KS

Re: NEED HELP GUYS

Post by OLD YELLER » Tue Apr 25, 2017 6:16 pm

It's always important to keep your neighbors proud of you..... :nice:
The older I get, the better I was.....

amcamx
Posts: 97
Joined: Sat Aug 13, 2011 6:21 pm

Re: NEED HELP GUYS

Post by amcamx » Wed Apr 26, 2017 5:15 am

I talked to a racer at the Mopar meet, that had a problem with misfire, above 5k rpm, under load.
Low gear, and poor traction on the street, is not much of a load.
With the inductive type pickup, in the dist, one misfire, can lead to another, and another, so, just as long as the first one, does not start.

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