msd ignition

340Cuda · 08-06-2008, 06:39 PM

Quote:

Originally Posted by Johnny U

A friend of mine has a new dragster and he has been fighting a top end miss/flutter all year. He has tried different carb jettings and different carbs to no avail. Question is has anybody had to lengthen the msd trigger wires beyond the six foot length that they give you. He thinks that this may be where his problem is as there is not much room in this dragster and the msd box is approx 12 feet away from the engine. Have anybody run into this concern.Thanks .

After we went to an MSD many years ago, our car will miss if the distributor cap is not vented well.

Bill

Jeff Beckman · 08-07-2008, 01:32 AM

I have gone to this extent, shield from the crank trigger to the msd box. Run a ground wire soldered to the shield to a chassis ground. On the crank trigger pick up, use a screw clamp to secure shielding to the crank trigger pick up nut.

SC1448 · 08-07-2008, 12:44 PM

Try disconnecting the Tachometer (green wire) and see if that helps. Been there, done that.
-Don

Johnny U · 08-07-2008, 02:34 PM

No Mike, he has not fixed the problem yet but he ordered the shielded cable and is going to try that first. Thanks for the many replies.

thewrench3 · 08-07-2008, 05:55 PM

What spark plug gap are you running? Mine did that when the plugs were gapped too wide. Its something simple and easy to check.

Lou SG2340 · 08-07-2008, 07:37 PM

Had a simular problem several years ago, tried everything. Replaced the delay box and every thing was fine. Who knows what causes it. It should be rf from some where. I know run a msd noise filter on the ing box.

THE LEGEND · 08-08-2008, 11:55 PM

Had a tach on my stocker did that one time.

Had a crack in my blocke shooting water on a plug do that in my Hot Rod car one time.

A friend once said you will find a 100 things wrong but only one will fix it. I wanted to smack him.LOL
Chip

08-07-2008, 01:32 AM	#2
Jeff Beckman Member Join Date: Nov 2007 Location: Columbus Ohio Posts: 308 Likes: 0 Liked 0 Times in 0 Posts	Re: msd ignition I have gone to this extent, shield from the crank trigger to the msd box. Run a ground wire soldered to the shield to a chassis ground. On the crank trigger pick up, use a screw clamp to secure shielding to the crank trigger pick up nut. __________________ Jeff Beckman 318J ET, SG 318T SC

08-07-2008, 12:44 PM	#3
SC1448 Member Join Date: Jun 2003 Location: Southampton, PA Posts: 226 Likes: 5 Liked 2 Times in 2 Posts	Re: msd ignition Try disconnecting the Tachometer (green wire) and see if that helps. Been there, done that. -Don

08-07-2008, 02:34 PM	#4
Johnny U Junior Member Join Date: Jul 2006 Location: Oakville Ontario Canada Posts: 55 Likes: 0 Liked 0 Times in 0 Posts	Re: msd ignition No Mike, he has not fixed the problem yet but he ordered the shielded cable and is going to try that first. Thanks for the many replies.

08-07-2008, 05:55 PM	#5
thewrench3 Junior Member Join Date: Nov 2007 Posts: 14 Likes: 0 Liked 0 Times in 0 Posts	Re: msd ignition What spark plug gap are you running? Mine did that when the plugs were gapped too wide. Its something simple and easy to check.

08-07-2008, 07:37 PM	#6
Lou SG2340 Member Join Date: May 2008 Location: Disputanta Va (30 minutes from VMP) Posts: 122 Likes: 0 Liked 0 Times in 0 Posts	Re: msd ignition Had a simular problem several years ago, tried everything. Replaced the delay box and every thing was fine. Who knows what causes it. It should be rf from some where. I know run a msd noise filter on the ing box.

08-08-2008, 11:55 PM	#7
THE LEGEND VIP Member Join Date: Aug 2002 Location: Fayetteville, n.c. Posts: 1,411 Likes: 0 Liked 1 Time in 1 Post	Re: msd ignition Had a tach on my stocker did that one time. Had a crack in my blocke shooting water on a plug do that in my Hot Rod car one time. A friend once said you will find a 100 things wrong but only one will fix it. I wanted to smack him.LOL Chip

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