Port~ Port~ and polish~

Business was slow as usual, so as the past few days i had been spending most of my time sitting in the office, taking a part my spare throttler body, from my spare blacktop head, and where i took out the cam and put into mango ^.^ 

ITB, this is one of the 4 units we had in our 4age-20V.
A slightly polished inlet, the port already had very smooth surface when it came out from the factory. So what it need is slight rub and polish to make it "near" mirror like ^.^ but not too smooth of fuel will stick on it. 
half way done-ed ITB, just finish polish it with Grade-100 sandpaper to smoothen up the curve and 280 sand paper to make it clear of scratches and will start using Grade-400 sandpaper to do the finishing later, which would take a long time to complete :S
Another look on the throttler body, with one of the ITB removed.
Compare of two cleaned and un-cleaned ITB, it will be really dirty no matter how often you change engine oil, get a oil-catch tank, it will help reducing the engine oil vapor going into the throttler body ^.^