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Checking under the hood of the TR3 the other day after a run and found that the coil was extremely hot. I wonder if this has a negative affect on the ignition system and could be responsible for a mysterious miss or stutter? I'm assuming the coil(a gold colored Moss unit) is oil filled so it's possible that extreme heat could have an effect. Thinking of relocating the coil to the drivers side inner fender. Anyone done this and noticed a difference?
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You could fry an egg on the Coil!
- Thread starter karls59tr
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TR3driver
Great Pumpkin - R.I.P
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Depends on how hot it really was. If it is just at engine temperature (under 220F or so, which is hot enough to fry an egg) then it shouldn't be a problem.
If it was significantly hotter than that, then likely the coil has failed internally (like an inter-winding short) and should be replaced.
Either way, I don't think you'll see any noticeable benefit from moving it, except maybe longer life.
BTW, I had one of my first ever coil failures at TRfest last year, and that is exactly the way it manifested, except the engine was also very hard to start afterwards.
Obviously a case of Lucas junk, as it only lasted 53 years :laugh:
I bought a Lucas sports coil at the show (mostly because it was the cheapest available and I had other coils at home), which solved the problem.
If it was significantly hotter than that, then likely the coil has failed internally (like an inter-winding short) and should be replaced.
Either way, I don't think you'll see any noticeable benefit from moving it, except maybe longer life.
BTW, I had one of my first ever coil failures at TRfest last year, and that is exactly the way it manifested, except the engine was also very hard to start afterwards.
Obviously a case of Lucas junk, as it only lasted 53 years :laugh:
I bought a Lucas sports coil at the show (mostly because it was the cheapest available and I had other coils at home), which solved the problem.
TR3driver
Great Pumpkin - R.I.P
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Check the Lucas model number on the coil. DLB105 is the usual "Sports coil" and does not require a ballast. If it is a DLB110, then it wants an external ballast.
https://www.minimania.com/web/Item/DLB110/InvDetail.cfm
https://www.minimania.com/web/Item/DLB110/InvDetail.cfm
hi. i have an mgb of 1972 and the coil is getting extremely hot when i go for a ride. i have gone to many professional but still i could not fingd the solution fr it. when this happens i could not start the engine once again for a long time. do you thing it is from the coil o maybe from somewhere else? thanks for your help.
Geo Hahn
Yoda
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jv87 said:
Easiest solution here is to always carry a (good) spare coil. If you ever suspect the coil is causing a non-start (whether due to heat or internal failure) it is the work of a moment to slap on a replacement coil and switch the wires over to it. I keep a couple of little bungees with the spare so I can just strap it to the existing coil -- good enough for a test & a drive home.