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09-28-2010, 12:47 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
Wire insulation
I have diagnostic tach wire that I keep accidently melting on the engine when tuning. I guess that's what I get for buying a cheaper tach without insulated wires.
Anyway, can someone point me to a wire sheath/tube/sock like they have for spark plugs (but much smaller gauge - more like a 12 gauge house electrical wire in diameter) that I can slide on. I don't really want to wrap the wire in heat tape and lose the flexibility. Even the wrapped wire heat shielding would impact flexibility a lot.
Thoughts?
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
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09-28-2010, 12:58 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
If you had an inductive tach you would never burn a wire again. 
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09-28-2010, 01:04 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
In theory this tach works inductively and from the coil. It's just a hell of a lot more accurate from the coil...
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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09-28-2010, 01:05 PM
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CC Member
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Join Date: Feb 2008
Location: Jacksonville,
FL
Cobra Make, Engine: Kirkham #570 w Shelby FE
Posts: 1,009
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Not Ranked
For heat resistance I'd go with teflon wire. Not something you'll find locally except for aircraft supply houses, but the stuff's on ebay all the time.
For a tach, 20ga would be more than enough current capacity.
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09-28-2010, 01:11 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
Anyway to protect the wire that I already have rather than cutting and splicing?
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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09-28-2010, 01:40 PM
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Senior Club Cobra Member
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Join Date: Nov 2006
Location: Charleston,
WV
Cobra Make, Engine: SPF 2592, Shelby alum. 527
Posts: 325
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Not Ranked
You could use this:
http://www.mcmaster.com/#8819k42/=91pfcr
If the link doesn't work, go to http://www.mcmaster.com and enter 8819K42 in the "find window".
I order a lot from these guys; great supplier.
Rodger |
09-28-2010, 01:46 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
Quote:
Originally Posted by RodgerH
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That's exactly the kind of thing I'm looking for - thanks! I should have known McMaster would have it. I love them too.
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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09-28-2010, 02:03 PM
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Senior Club Cobra Member
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Join Date: Nov 2006
Location: Charleston,
WV
Cobra Make, Engine: SPF 2592, Shelby alum. 527
Posts: 325
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Not Ranked
Doug,
If you use the braided sleeve, here's a tip. After you cut to your length, smear a little hi-temp RTV on the ends. It will keep the sleeve from fraying.
Rodger
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09-28-2010, 02:16 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
Quote:
Originally Posted by RodgerH
Doug,
If you use the braided sleeve, here's a tip. After you cut to your length, smear a little hi-temp RTV on the ends. It will keep the sleeve from fraying.
Rodger
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Thanks. I'll do that. I got a 5' length of both 1/16 and 1/8 braided sleeve. Cost was a bit over $2.00 total. Shipping will cost more than that. 
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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09-28-2010, 10:46 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
i used some of that down near my starter. works well. use some heat shrink to hold it in place or it will slide around.
__________________
Fred B
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