Warm Up Regulator S1

[Bercilac]

I tracked a rough running problem to a gummed up WUR, which I rebuilt using a kit from Oz after making sure I had 24 ohms resistance and a decent 12v feed.

When I stripped it, the casing (where it contacts the WUR mounting plate) was heavily corroded (both Ally surfaces). I'd like to try to avoid future corrosion, but can anyone recommend how I do that, if at all please?

Given that it needs to heat up with the engine I'm not sure if a coating of dielectric grease or similar would be a good idea.

[GreenV8S]

Maybe try one of those DIY anodising kits?

[Bercilac]

That's an interesting thought. I'll have a read up thanks.

[v8s4me]

Could you simply smear the surfaces with a thin film of grease?

[Steve_D]

v8s4me said:

Could you simply smear the surfaces with a thin film of grease?

High temp silicone grease will do the job.

Steve

[v8s4me]

Wheel bearing grease is rated up to about 150°C. If your block is hotter than that you have other problems

[Bercilac]

I ended up trying heat sink paste - rated to 200 degrees and designed for aluminium computer components. Probably not necessary but thought I would experiment. Car runs great now with the rebuild Warm Up Regulator.

The fine mesh was blocked and the diaphragm ripped, plus corrosion in and on the base of the unit couldn't have been helping much.