M37 coil problems.

Rail man · Post by **Rail man** » Sun May 11, 2008 6:22 am

How something that sounds that easy can be so elusive is sometimes so surprising. Throughtout this project useing 4 different coils l have switched between points & electronic ignition too eliminate the electronic as the problem.I get the same results from both.If removing the RF-unit does,nt fix it what then? I would like to thank everyone for all the help with this!

MSeriesRebuild · Post by **MSeriesRebuild** » Sun May 11, 2008 9:16 am

Rail man wrote:I've taken the cooling system apart and found everything in order as it should be.One tube is pointed upwind,the other downwind,all seals are in good order.I put a little compresed air to the vent lines befor reataching them to the elbow.All this was good from the begining,so what else could be causing the coil too go bad. knattras mentioned removing RF filter and runing fromcoil directly to wiring harnes. Is there an advanage to doing this and how do l use the water tight fitting?

Some of the replacement coils are short lived. We have had some in the past that lasted only as long as the first time the ignition was turned on. Be sure all else in the distributor is good, if so you will likely be better satisfied with an original coil if you can locate one somewhere.

Rail man · Post by **Rail man** » Sun May 11, 2008 10:10 am

If...can be a very big word.I have another original coil.Is there a way to test it too see if it's good?Putting in the truck seems like alot of work just too see if lt's good.Who sells the most reliable after market coil?

MSeriesRebuild · Post by **MSeriesRebuild** » Sun May 11, 2008 5:04 pm

Rail man wrote:If...can be a very big word.I have another original coil.Is there a way to test it too see if it's good?Putting in the truck seems like alot of work just too see if lt's good.Who sells the most reliable after market coil?

We have some aftermarket coils that have a pretty good track record, although not a perfect one. As far as I know, Frank's Surplus has the only NOS ones I know of, at least that's what they claim.

Rail man · Post by **Rail man** » Mon May 12, 2008 12:36 pm

I contacted frank's surplus in canada he siad he only has w.w.ll coils.

peter e mark · Post by **peter e mark** » Mon May 12, 2008 2:27 pm

Knattrass, Are you an automotive engineer or something? Jesus, I keep re reading the directions you give, and thank you, but I don't know what your talking about ! I know what the distributor is, but what's an RF filter? , "cannon" ? Is there something I could read to help prepare me for all this ? Peter of Long Island fame...

MSeriesRebuild · Post by **MSeriesRebuild** » Mon May 12, 2008 4:03 pm

peter e mark wrote:Knattrass, Are you an automotive engineer or something? Jesus, I keep re reading the directions you give, and thank you, but I don't know what your talking about ! I know what the distributor is, but what's an RF filter? , "cannon" ? Is there something I could read to help prepare me for all this ? Peter of Long Island fame...

The RF filter is for radio noise suppression, it's on the lead in wire from the switch. The cannon plug is the screw on plug that connects the #12 wire to the distributor housing at the RF filter.

peter e mark · Post by **peter e mark** » Mon May 12, 2008 5:38 pm

Thank You Charles...

Lifer · Post by **Lifer** » Mon May 12, 2008 7:35 pm

"RF filter" should technically be "RFI filter" meaning Radio Frequency Interference filter. It's a must if you want to operate HF radios with the engine running, or you'll hear nothing but static without it. Operating the radios with the engine running is a must, too, since they'd drain your batteries in a heartbeat otherwise. Now, then...if you're not running any radios, the RFI filter serves no purpose and can disrupt the ignition system if it goes bad. Take it out and reroute the lead from the switch as previously indicated and you'll eliminate one hassle, but you may create another one. Your neighbors TV reception might get a little "snowy" while you're running your engine unless he has cable.

peter e mark · Post by **peter e mark** » Tue May 13, 2008 2:56 am

LIfer, you have answered another question for me , which is: Hoiw do I "encourage " my nieghbor to lower the volume on his damn TV... Ha ! Lets see now, I'll park in fornt of his den window, pretend I'm tuning the engine.....

Lifer · Post by **Lifer** » Tue May 13, 2008 3:52 am

Re your neighbor's TV volume: You could offer to buy him some new batteries for his hearing aid.

peter e mark · Post by **peter e mark** » Tue May 13, 2008 5:35 am

Lifer, That's a very civil response from a soldier...But I guess now that we're civilians, we act accordingly, with restraint, poise, manners...(yuk) I wonder what KNATTRASS would say about this?

knattrass · Post by **knattrass** » Tue May 13, 2008 6:39 am

I have an empty lot next door which we used to chemically strip the frame on, so my expectations are that my ultimate neighbor will be asking "I wonder why my grass doesn't grow in this area of my yard?."

Next, the builder actually just built a spec home on the property and should be putting the driveway & landscape in here shortly - hmmm what's wrong with the grass??... He has started having open houses on the weekend which is also when we roll the beast out and work on it in plain site. We have imposed apparrel restrictions upon ourselves when the model is "open" - mainly stripe pants, plaid shirts, white socks, etc... real fashion statements.

We then deploy the loose labrador, loud music, grinder, d/a, & other ground tactics to supplement the long range visuals.

Our reserve tactic includes the "bubba butt crack" look, which we have not have had to leverage (yet).

Given that the sub has cable, the impact of RFI (interference) is minimal but we have yet to run an experiment on the wireless broad band - we expect the the M37 w/o the RF filter might generate some "noise". If you have your truck parked near the wall of your neighbors house, adjacent to the t.v., you may luck out by generating some EMI (electro-magnetic interference) - not sure.

I would expect that the e-ign we installed will not generate the desired neighbor nuissance that you may be expecting. If that's the case, then the standard points/condenser is the way to go.

You may want to deploy these additional tactics. We actually had cases where Merecedes and BMWs pull in next door and then turn around and leave without seeing the model. Maybe they've seen enough?

Its just our way of saying "Howdy Neighbor!!"

peter e mark · Post by **peter e mark** » Tue May 13, 2008 8:38 am

Knattrass, I empathize with the ineffective efforts you report. May I suggest an old Long Island method of attention getting ( otherwise known in legal terms as harrasement ) , Start by posting large " NO SMOKING ", "DANGER', and "HAZARDESS WASTE AREA " signs, all facing your neighboirs property. Going just a little further, You could also volunteer the use of your property to the Fire Department to reenact emergency preparedness excercises on your front lawn, for example, they could bring a derilic vehicle there, put it on fire, and practivce putting it out. Or go all the way and invite the local National Guard to give tear gas clases to thier new recruits in your driveway adjacent to your neighbors. Best time for this would be when the realtors are showing the house, of course...And don't forget the best advice of all: FENCES MAKE THE BEST NIEGHBORS, ESPECIALLY WHEN THIER 220 VOLT...

TOM R · Post by **TOM R** » Wed May 14, 2008 5:47 am

if you can find a nos distributer they come complete with coil, cap,rotor,points, condensor, i grabbed one for a spare