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The mkiv Supra Owners Club

Wanted, stock MKIV TT air box


Chris Wilson

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Quote: from branners on 4:25 pm on Mar. 31, 2002[br]Leon should have a couple knocking about.

 

btw, what is the reason for going back to stock? Is there a specific problem with a customers car that is forcing it or is it just a general thing about aftermarket filters?

 

JB

 

Thanks John, have replied to marks offer, if that falls through will try Leon. I have a nice veilside bodied car in, with an HKS filter. i don't want it to go the same way my Skyline engine did, so am going back to stock filtration. I personally think the HKS filters are totally and utterly useless, but won't be drawn into a big "thing" about it. Some HKS stuff, IMO, is good, some crap. I feel their air filters fill the latter category :-)

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Quote: from branners on 8:11 pm on Mar. 31, 2002[br]Have you had the same experiences with the Blitz SUS?

What would you expect to see on a car with poor filtration? Would it only become obvious when you start pulling the turbos apart?

 

JB

 

Don't know anything about those, sorry John. My R33 gave absolute text book signes of excess wear from poor air filtration, erosion of compressor blade edges, excess bore piston and ring wear, excess guide wear. The first signs were a slow loss of grunt, which was confirmed by my doing regular leakdown tests. Then it started using oil, and puffing a bit on startup.

 

I ended up with 2 good s/hand turbos, doing a rebore, new pistons (used forged ones whilst it was down, a bit daft as I then decided to flog it...), new guides and seals, new crank bearings et all, to make a proper job of it. A VERY dear do...

 

 

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