We often get the question, "Won't the coils bake in there?"








We always reply ( like this ), "No, our test vehicle wore them for months in the summer without malfunction etc,etc..."

We want to be able to put peoples fears to rest, so we decided to try and kill some coils. We used an oven to bake the them at varying temperatures starting at 200 deg. F:


The coil was baked for 30 minutes, then the temp was raised another 50 deg:



We kept raising the temperature and forgetting about them for 30 min or so:



Had it set for 400, but by the time we got back from lunch it was almost pegged:


When the coils reached nice, round temp marks we pulled them from the oven (with a welding glove ; ) and hooked them up to our LQ9 escalade.





Look, I figured out how to work the camera:


...And couldn't get a misfire or CEL if we tried.

 

awesome, those look very cool.

 

Beautiful valve covers! Good info about smoking the coils too!

 

ok then explain this one. my stock covers are powdercoated white. and after 8k in miles my coils left discolord marks where they sat on the covers. a discoloration like to much heat got to them.....

 

I think that has to do with the powder coating reacting to the direct heat from the coil, not the coil getting too hot.

 

The coils make a good amount of heat too.

There is a reason some of them have heat syncs on them.

 

spray paint is not the same thing as powder coat

 

that was the coffee stains you forgot to wash off before the reinstall.

 

exactly a coil isnt nothing more then a transformer and all transformers produce heat

 

You are 100% correct