Evening All

 

I have fitted a pair of Apexi dump valves this afternoon and noticed, once the intake T was off, that the pipes going down to the compressors had a thin black residue inside them. The care has an HKS 'mushroom' air filter, which was looking very black and shi**y indeed! What is the best way / best stuff to use to wash one of these things out, if at all?

 

I had noticed a bit of a black residue in the throttle bodies too when I removed the pipes for cleaning, when I was in fact expecting black carbon deposits. I was worried the turbos might be on the way out but I am a bit more relieved now as the same oily stuff is upstream of the turbos too.

 

Cheers,

 

Derek

You buy replacements, you don't wash them!

Oh ok, fair enough. Thought I'd ask, they're kind of expensive and I know some race teams used to wash foam type filters. :-(

There are certain types you wash and some you dont, have to say I wash them all :) If you do, just remember to rinse and dry them properly and a light spray with filter oil. The oily residue may well be coming from your throttle bodies, via your PCV valves. If they rae past their sell by, then oill gunk gets blown up into the plenum and everywhere else.

They are $20 from certain sites in the US, for a few dollars it ain't worth skimping!

 

If dust hits your compressor blades it dents them making them less efficient and knocking them out of balance, as I have seen on some turbos taken from a 300 with HKS filters not changed frequently enough!

FM - according to the blurb on the HKS filter packaging these filters should be replaced every 3-5kms or 3-6months. I replace mine every 6months or 6K miles. They can't be reused. The last one I got from http://www.sumopower.com for £21 inc P&P.

 

This is the HKS link:

 

http://www.hksusa.com/products/?id=787

 

-Andrew

probably cheaper in the long run to get something like the Blitz sus power filter and not having the hassles with changing the filters. I have also heard bad things about people going though puddles ect and the filters getting wet and restricting the air flow.

Oil will still get to the intake just after the T even though its before the turbo - recirc valves will dump it there from the high pressure side ;) Not necessarily anything to worry about, the breathers dump into the turbo inlet and this creates a fine mist of oil in the pipes.....

Hi All

 

Thanks for all the replies - have been out all day waiting for the new immobiliser to be fitted ;-) yeah the PCV's are well past it - I have a set waiting for me to pick up in the good 'ol USA. I'll try another HKS element (cos it's cheaper and I've spent a small fortune recently!) and see how it holds up. Right, off to bed, got ma Profec B to fit tomorrow. :-)