Porting waste gate passage, need responce ASAP

[RipperXX]

Ok, so I removed the stock flapper from my E3 exhaust houseing, which was a PITA. (first tried the blow torch, and soon realised this isn't plain cast iorn and it doesn't like the torch) So I went to the grinder after breaking the saw blade on my hand held band saw Thats stong shit there.


Anyway got it out, and I need advice on the best way to port the passage, im planning on just removeing that "ring" that extends outward, opening it all up, which will take a few hr's to do. But im not sure this is the best idea, as it seems to me that helps direct the exhaust out that passage....

If anyone could post pics of there work where they ported the waste gate passage that would be grate. or just post a pic showing what I need to remove, for best results.


THANKS! again im needing this info ASAP as im currently at a stand still waiting for the info before I go on and potentialy screw it up.

 

[DGajre777]

http://www.dsmtuners.com/forums/showthread.php?t=186525

 

[GVR4592]

Are you going to be using an external gate on the O2 housing or are you installing a larger flapper?

 

[Mike1992]

If your going external on the o2 housing I would port the exhaust housing wastegate hole to the size of the wastegate inlet/outlet. I did this on my newly installed setup (Holset Hx-35, 40mm External) and I hold 1 bar/14psi solid. In reference to how big the hole should be ported use a deep well socket for reference. Find the biggest one that fits into the opening/outlet of your external wastegate and start working the wastegate passage on the turbo's hotside. Once your done the socket should slip in easily and you have the best/maximum amount of flow your external wastegate will allow.

 

[2gAWDTalon]

DGajre777 - That is a awsome link. That pretty much sums it up... I dont think any more answers are needed. I have a external, but I just read that and feel like I could solve creep issues on a 16G with no problem now.

 

[RipperXX]

Well I put it all on the other day, I ported out the passage, proably tuck 2-3mm out of it, and then aimed the exhaust twords it a little more, also removed the step on the intake of the exhaust houseing.

I haven't tried it with a stight lone from corce to Tial, but with the joe P on there where it's at, it holds 20psi solid ... I will have to try a stirght line to see what the minimum is. But the waste gate hsa a 1bar spring in it, which if memory serves is 14.7psi.


Oh and whatever the E3 houseing is made of is alot stronger shit than the 14b's solid cast iron, that new alloy is damn near like steel.

 

[GVR4592]

Well I put it all on the other day. I ported out the passage, probably took 2-3mm out of it, and then aimed the exhaust towards it a little more. I also removed the step on the intake of the exhaust housing.

I haven't tried it with a straight line from source to Tial, but with the Joe P on there, it holds 20psi solid ... I will have to try a straight line to see what the minimum is. But the waste gate has a 1bar spring in it, which if memory serves is 14.7psi. (It's actually 14.5)


Oh and whatever the E3 housing is made of is a lot stronger shit than the 14b's solid cast iron, that new alloy is damn near like steel.

You're welcome