Ignition coils

[what2do]

Huge apologies for hijacking the thread with rivnuts and BOARS!

[ghost123uk]

No problem.

Funny re that link to Putney and the dangerous wild boars, I got my cut & pastes mixed up whilst answering another thread about camping in the Forest of Dean

Re the heat-sink not making good flat contact with the body. I don't think it gets hot enough for that to be an issue. I an guessing it will be fine, the standard alloy heat-sink being sufficient on it's own. Maybe run the van for 30 minutes and feel how warm it is. Any hotter than a drinkable cup of tea is too hot.

[what2do]

Thanks john, much appreciated. I'll be sure to have a brew in my hand to make the comparison.

[itchyfeet]

Reason for painting the holes.....going to be drilling them out to accept stainless rivnuts because I have an unnatural loathing of self tappers.

rivnuts don't sit flush and heatsinking does not work through air gaps.

I'd have thought a coat of paint on the outside of your van would be more important, just don't paint the windows

[what2do]

But the gap will be behind the aluminium heat sink plate. Do you still think this is not advisable? Stinking self tappers

[itchyfeet]

Maybe ok dunno, all you will do is trap a thin layer of dirt salt and water between two disimmilar metals.
If you don't like self tappers why not just put stainless screws with stainless nyloc nuts on the back?

[what2do]

I'm going to mill the back of the plate (just where the fixings go through the holes), just deep enough to allow it to sit flush with the body - that should cover all the bases.