waterproofing the distributor and plug wires - Defender Source
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  #1  
Old July 21st, 2009, 11:59 AM
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Clark Bowen
1969 Series 2a/OM617 Bugeye 88"
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waterproofing the distributor and plug wires

We are running the Fordyce trail in 10 days and, with three deep fast water crossings, I want to waterproof the electrics as well as possible.
I'm looking for an O ring for the distributor cap - anyone know who has the right size? I have used silicone sealer before but was advised against that because it can make the cap almost impossible to remove or pieces can get into the distributor after it is removed.
I am thinking that I would smear di-electric grease around all the rubber boots too.
Any other ideas - comments?

Thanks
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  #2  
Old July 21st, 2009, 12:10 PM
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Non-hardening silicone is fine on the cap. New plug wires are more water resistant than old ones. Dielectric grease on the plug connections and purchase the coil wire with the "boot."

Biggest thing (at least for me in my younger days when I took my trucks swimming) was to pull the fan for deep water crossings.

Ron
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  #3  
Old July 21st, 2009, 01:45 PM
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Daniel Marcello
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Put dielectric grease on all your plus to sparks and distributor. I've seen guys drill a very small hole in the top of the distributor cap and run a little breather tube out of it. Don't know if it works at all, but would help if you started to get condensation in the distributor cap I think.
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  #4  
Old July 21st, 2009, 02:29 PM
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Stephan Laputka
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If you have a local swimming pool store, you can find an o-ring for the distributer cap there. I forget the size but Hayward makes an O-ring for their pool pump series that is the perfect size for the distributor. I've also seen milk cartons cut to shape be used.
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Old July 22nd, 2009, 12:49 PM
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Clark Bowen
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Hell Jeff......
Why don't you run it with us.
We are starting on Sunday 8/2 at noon, camping part way and coming back the next day via the bypass that becomes the Signal Hill trail.
It's me, my two sons, age 39 and 36, in their jeep and a friend of my oldest in another jeep. All experienced, but this trail is new to us.
Given the watercrossing I should take the TDi with a snorkle, but after looking at some of the rock obstacles I decided the RRC with 35" tires and bodywork I'm not worried about was a better bet.
We are going right before the Sierra Trek and PG & E tells us the flow should be about 250 cfps.
Anyway, if you an make it we would welcome your company.

Clark
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Old July 23rd, 2009, 12:00 PM
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Clark Bowen
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I've got an empty seat and you are welcome to it.
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  #7  
Old January 8th, 2017, 02:59 PM
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In the middle of the blizzard I power washed the d90 to get the salt off (from the day before) AND I must have blown moisture under the distributor cap... it wouldn't start....

I wish the dist. cap and wires were more waterproof...

Does anybody know the size and a place to source the o-ring that fits under the dist.cap that is mentioned in this thread?

outside in the snow I took the cap off and took the coil wire off to blow on it, mistake, I probably only got more moisture in with wind blow snow. (We got dumped on with a foot and a half of snow).

BTW - I did effectively get the salt off (hot & cold water outside was one of the best house upgrades I have done)

Apprecite any thoughts & insites

.
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  #8  
Old January 8th, 2017, 03:53 PM
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Jack Walter
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And another reason I love my diesels so much...

WD40 (Water Displacement formula #40) is a good thing to always have handy if you're in one of those spark ignition type vehicles.
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  #9  
Old January 8th, 2017, 06:57 PM
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I learned something here. Thanks.

I powerwashed a no start once. Never thought to check my distributor as I never opened the bonnet. I did spray the snot out of the undercarriage and figured I nuked a connection to my fuel pump. It was hit and miss with the starts, but it turned out that I had less than 5lbs at best on the pump, so that got swapped. Been good ever since. But I'll certainly remember about your scenario in the future if I ever wash the engine bay! Thank God for WD40 and especially those directional tube nozzles! ,-)
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  #10  
Old January 8th, 2017, 07:52 PM
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Doug Crowther
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Discovery Range Rover V8 Ignition Waterproof Kit Silicone Distributor Coil Boots | eBay
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  #11  
Old January 9th, 2017, 07:00 AM
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Quote:
Originally Posted by D90Overkill View Post
I learned something here. Thanks. I powerwashed a no start once. Never thought to check my distributor as I never opened the bonnet. I did spray the snot out of the undercarriage and figured I nuked a connection to my fuel pump. It was hit and miss with the starts, but it turned out that I had less than 5lbs at best on the pump, so that got swapped. Been good ever since. But I'll certainly remember about your scenario in the future if I ever wash the engine bay! Thank God for WD40 and especially those directional tube nozzles! ,-)
Change to the Unilite.
https://youtu.be/4vyFJFWG4oE
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  #12  
Old January 9th, 2017, 10:03 AM
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steven
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For any of you in the habit of washing your engine bay with high-pressure equipment or considering the same, might I suggest that you run this idea by your mechanic b4 you proceed?
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  #13  
Old January 9th, 2017, 10:16 AM
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Chris
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A little impractical at short notice, but converting to diesel works:
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