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Old 04-19-2011, 06:03 PM   #21
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Re: Bosch +4 on a VX?

....if it did i would believe every auto manufacturer would NOT be using it or have some kinda external ground strap...

ALWAYS use antisieze, ESPECIALLY in soft aluminum.

id rather take the chance it may introduce a .001ohm of resistance than spend $200 to have the sparkplug threads helicoiled...

btw most spark plug wires have a few K of resistance anyways, one or two ohms aint gonna make a difference...

might as well not use dielectric grease on the plug boots as it may interfere lol.
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Old 04-19-2011, 09:53 PM   #22
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Re: Bosch +4 on a VX?

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....if it did i would believe every auto manufacturer would NOT be using it or have some kinda external ground strap...

ALWAYS use antisieze, ESPECIALLY in soft aluminum.

id rather take the chance it may introduce a .001ohm of resistance than spend $200 to have the sparkplug threads helicoiled...

btw most spark plug wires have a few K of resistance anyways, one or two ohms aint gonna make a difference...

might as well not use dielectric grease on the plug boots as it may interfere lol.
dielectric grease is actually electrically conductive so I don't think comparing it with anti seize is appropriate. Also if every auto manufacturer is using anti seize, we wouldn't be having this discussion now would we?
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Old 04-20-2011, 06:10 AM   #23
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Re: Bosch +4 on a VX?

Permatex anti-seize is "A highly refined blend of aluminum, copper and graphite lubricants." I suspect it's nearly as conductive as plain steel (plus I'm sure there's plenty of direct steel-on-steel contact where the anti-seize squeezes out into the voids where corrosion actually happens and causes seizing).
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Old 04-20-2011, 12:03 PM   #24
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Re: Bosch +4 on a VX?

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Permatex anti-seize is "A highly refined blend of aluminum, copper and graphite lubricants." I suspect it's nearly as conductive as plain steel (plus I'm sure there's plenty of direct steel-on-steel contact where the anti-seize squeezes out into the voids where corrosion actually happens and causes seizing).
Well I guess the only thing left to do is a do a test to see how much the conductivity is affected.. If it' affected by less than 1ohm, no big deal but IMO more than an ohm is a big deal, ESPECIALLY for something like an o2 sensor which you know people are putting anti seize on.
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Old 04-20-2011, 01:29 PM   #25
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Re: Bosch +4 on a VX?

...all the O2 sensors ive bought new are prelubed with antisieze....i may still have one that i didnt install anywhere ill snag a pic

what holycow said is true, antisieze is usually just grease with alot of graphite or copper (or in his findings both) suspended in it. we use a crapload of tweco brand conductive grease (same thing pretty much) at work. a small 5 lb can (pt paint size about) is about $255 bucks

btw normal plug wires have 10-15K ohms resistance from my quick googilings...

i do believe all car manufacturers ARE using anti seize or everyone would be screwed trying to remove 100Kmile sparkplugs, they may not be using much as they are all cheap bastards haha that and it burns off within 10 min but leaves the graphite and copper and whatever else behind.
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Old 04-20-2011, 09:29 PM   #26
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Re: Bosch +4 on a VX?

Oh, when I finally replaced my 02 sensor on the VX it too came with anti-seize on the new threads. I do have rusting on the outside of my exhaust manifold down to the cat. I may remove the heat shield one day and give it a whirl. I've never removed a manifold of any type myself though, so you guys know I'll be here. I've also been doing a lot of research on the BITOG site.
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Old 04-20-2011, 11:25 PM   #27
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Re: Bosch +4 on a VX?

heatshields are useful because they help keep the heat in so that the manifold doesn't cool down too quickly and crack.
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Old 04-21-2011, 10:05 AM   #28
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Re: Bosch +4 on a VX?

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heatshields are useful because they help keep the heat in so that the manifold doesn't cool down too quickly and crack.
Yes, I do plan to stay stock with this engine. It would be a big undertaking for me to clean the manifold. I'm still building experience with vehicles at this stage for myself. You know how it is.
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