K, so I got bored and decided to port and polish the cold side of the turbo. I was able to reduce both inlet and exit wall thicknesses by over half the origional thickness. Its pretty much a mirror finish on both inlet and outlet. I discovered on my IHI vf28 that I have a Titanium compressor wheeel....kinda interesting. Anyways, here are the pics, I don't think its a bad job for my first port and polish and going off of just common sense and no instructions. Here are the pics, I had a hell of a time trying to show the mirror finish, it didn't photograph to well because off the reflections.
looking good, however if you want any huge gains its all about the hotside. if you are just goofin around you should shine up the outside of the coldside. i've done that to mine and it looks pretty mint. pics are over at awdaddicts somewhere. if you are interested in having your hotside pnp'd let me or aspitfire know and we can do it for ya.
Since the inlet housing was only aluminum, I used my Dremel. Started with a rotary file to remoce the larger amounts, then moved to two different levels of abrasive sanding drums, then moved to a grey (name?) Dremel stone, and them 400 grit, then 600 grit, then polishing compound (brand?) then used Mothers Aluminum polish with a cotton buffing wheel.
is it hard to port and polish stuff? never doen it befroe and a lot of guys are doin it. just wondering. can you screw up majorly?
+1 Yeah I took my sweet ass time, I didn't not want to buy another turbo just cause i tried and failed, go slow, and use common sense! Also, make sure you take your time, a die grinder or Dremel can easily screw up areas you aren't planning on touching haha.
Yeah, I don't have a die grinder yet, but plan on getting one soon. I don't think my Dremel will cut it on the steel exhaust housing, maybe for the fine polishing, but I am sure the porting needs to be done by a air or electric die grinder. Correct me if I am wrong. The hot side will be getting done this week or next, no rus these days, still waiting on a new crank for the ej207.
I did take the c-clamp off the turbo, and I had problems getting the exhaust side to split away from the center section. I am holding off for now until I get a die grinder, I just don't think my Dremel is going to cut it for any of the steel material removal. I am sure it will do just fine for polishing, but not the large stuff. If anyone has any tips it would be very helpful!!! Oh, but my c-clamp, if we are talking about the same one, the (full circle clamp) came off no problems, I just could not get the two ti split form the center sections and hotside.
you need a pair of these http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200312723_200312723 i use the internal version of this and it works perfect for those snap rings
yes thats the hard part. Justin found a good trick to getting this off and it seems to work very well
Is it a secret?? Haha, if so, would you be so kind as to PM me the trick?? I really want to port and polish the hot side, since I know this is where a majority of the gains will come from. My vf28 has a fairly large exhaust compressor wheel, quite a bit larger than the TD04's have, so there isn't as much material for porting, but I still want to enlarge the hotside inlet and exhaust a little bit and polish the heck out of it so it less lilkely to build up as much carbon. Has anyone touched the entry/exit of the waste gate portion of the casting, are there any gains to be found on this portion of the turbo??
