How to clean Plenum ?

[jeepie]

I need to clean my plenum before putting it back on, it is pretty dirty inside, How has everyone cleaned theirs ? I was thinking about bringing it to a machine shop and have it hot tanked is this a good idea, or will it ruin the finish or warp the plenum ? The small passages (egr ?) are also pretty carboned up what is the best way to clean them out ?
Thanks for the help.

 

[Ken]

The plenum is aluminum, while the vavle covers are magnesium. A reputable machine shop will know how to clean aluminum. The aftermarket (Mid America Motorworks, Paragon and others) sells paint similar to the paint used at the factory.

 

[BigRed]

Honestly I just cleaned mine today!


All I used was a GOOD carb cleaner, and put a rag through it a few times.

(Mine was gross trust me)

I kind of filled the rear of the plenum covered the holes with my hands and shook the living day lights out of it then rinsed.

A few times and you can shave in it!

 

[jeepie]

Thanks, I think I will give the carb cleaner a try.