[Greenboost]

What tools work the best for this , I'm assuming you use an air chuck die grinder. but what kind of tips work the best. I seen a kit that summit racing has
http://store.summitracing.com/egnsearch.asp?N=700+115+318073&D=318073
will this suit my needs?

 

[turbolover]

Carbide bits and a nice air compressor! I also found that skinnyer bits take metal out faster.

My turbo is ported, I guess it just needs more material takin out...

 

[oldman]

What tools work the best for this , I'm assuming you use an air chuck die grinder. but what kind of tips work the best. I seen a kit that summit racing has
http://store.summitracing.com/egnsearch.asp?N=700+115+318073&D=318073
will this suit my needs?

That is more for cylinder head porting, what you want are DOUBLE CUT Carbide burrs for cast iron like these, the cylindrical shape being the most useful, then clean things up using dremel sanding drums.

 

[JayRolla]

Carbide bits and a nice air compressor! I also found that skinnyer bits take metal out faster.

My turbo is ported, I guess it just needs more material takin out...

Did you correctly port around the wastegate flapper. I had slowboy do mine for like $50 and it was beautiful compared to what I can do. Im glad they did it for me.

 

[oldman]

Did you correctly port around the wastegate flapper. I had slowboy do mine for like $50 and it was beautiful compared to what I can do. Im glad they did it for me.

Jay, you're the only one that has ever complimented a SBR port job, most threads I have been in starts off with a SBR port job like this thread which ultimately lead to the creation of the tuners evo3 porting tech article that everyone reference to. Unless SBR drastically changed the substance of their $50 port job, I suspect you didn't start off with much of a creep to begin with. The only vendor port jobs that I have seen which specifically adresses boost creep to my satifaction are Forced Performance port jobs and it costs a lot more than $50.

 

[oldman]

Jay, just read through your profile on tuners, have you tried running without the CAT yet?

 

[JayRolla]

Jay, you're the only one that has ever complimented a SBR port job, most threads I have been in starts off with a SBR port job like this thread which ultimately lead to the creation of the tuners evo3 porting tech article that everyone reference to. Unless SBR drastically changed the substance of their $50 port job, I suspect you didn't start off with much of a creep to begin with. The only vendor port jobs that I have seen which specifically adresses boost creep to my satifaction are Forced Performance port jobs and it costs a lot more than $50.

I told them I wanted the turbo ported so It would not creep. They said no problem and took care of it. My SBR mani, evo02, and turbo are all ported running to a 3" turbo back. The cat is a high flow magnaflow so maybe that is helping it from creeping but its pretty high flow.

On a side not my brother had no problem on a virgin 16g running a 2.5" straight pipe.

 

[oldman]

On a side not my brother had no problem on a virgin 16g running a 2.5" straight pipe.

Big difference between 2.5" and 3" as well as cat vs no cat, hiflow or not, maybe both of you have boost leaks which will also help keep creep on the DL.

 

[JayRolla]

Big difference between 2.5" and 3" as well as cat vs no cat, hiflow or not, maybe both of you have boost leaks which will also help keep creep on the DL.

Ive fixed a lot of leaks but still have a little. You got me thinking oldman. I went out and loosened my downpipe bolts so there was a small crack. Just enough to cause a leak and let the 16g flow a little better. Also disconnected my MBC.

Went out and did a run and guess what??? BOOST CREEP!! Yea it went to 11psi and then just slowly creeped up. Im not sure if it was ported correctly now, I should beable to run an open DP if it was done right wouldnt you think Oldman?

So maybe the porting wasnt that good. My mechanic said it looked pretty good and was very surprised it was from slowboy. He almost didnt believe me, he said the same thing you did. I purchased it about 2 years ago from them.

 

[oldman]

I should beable to run an open DP if it was done right wouldnt you think Oldman?

I say if you're not creeping with the exhaust on, leave it alone. If you happen to have the turbo off, take a picture of the inlet and I will tell you if it's a good/shitty job.

 

[turbolover]

Did you correctly port around the wastegate flapper. I had slowboy do mine for like $50 and it was beautiful compared to what I can do. Im glad they did it for me.

I don't think that would benifit me anyway unless I put the stock 2g o2 housing on. The tubular o2 wont let it open to 90 from what I understand, but maybe I should do it anyway while I have it off?

 

[oldman]

I don't think that would benifit me anyway unless I put the stock 2g o2 housing on. The tubular o2 wont let it open to 90 from what I understand, but maybe I should do it anyway while I have it off?

No O2 housing will allow the flapper to open that far anyway because the limitation is on how far the actuator arm will extend.

 

[turbolover]

But the tubular probably limits it even more than the stock o2, correct?

 

[oldman]

But the tubular probably limits it even more than the stock o2, correct?

3. Turbine wastegate outlet. If you were to hold the flapper open at 45* (about as far as the actuator would), you would see that exhaust will bounce off the flapper and hit the divider wall at an almost 90* angle, bounces off that wall and gets trapped and backed up behind the flapper, this is what I was talking about earlier. The key here is to change the angle of deflection on the divider wall and hep guide exhaust flow into the O2 housing. Remove material on the divider wall in a slight angle, in other words, the close you get to the flange, the more material you remove. You can take alot off this wall as long as you leave about 5 mm of divider on the flange, this should give you at least a 45* of deflection. Finally, enlarge the entire outlet including behind the flapper, smooth out all the casting marks.

The purpose of porting the wastegate exit outlet on the turbine housing is not to open the flapper more, it's to change the flow characteristics as well as capacity. The limitations of a tubular O2 is that it limits the amount of porting that can be done on the turbine side because there are simply no meat on the tubular O2 wastegate inlet to be port matched to the turbine side.

 

[turbolover]

Got ya!

 

[JayRolla]

Well I bolted it all back up and I have unlimited boost. Ive been running like this for at least a day and didnt even notice.

Never got on it to much. Thats funny I went to test the boost creep theory and now I dont know if its just a bad vaccuum leak somewhere.

 

[oldman]

I'm a little lost, are you saying boost creep or infinite boost as if the wastegate is stuck closed, go back and double check everything you've touched.

 

[JayRolla]

I know, I for some reason am getting infinite boost. It doesnt stop at 11 then creep up it just keeps going. I think I messed up something. The only thing that controls boost would be the bov vacuum line, wastegate line and the actuator right?

Too bad its raining all day!!

 

[socalmodelboy]

yea old man is right......get it ported properly and up grade fuel lines, rails, and injectors and u should be ok

 

[oldman]

I know, I for some reason am getting infinite boost. It doesnt stop at 11 then creep up it just keeps going. I think I messed up something. The only thing that controls boost would be the bov vacuum line, wastegate line and the actuator right?

Describe how everything is hooked up mbc wise, I don't like the word BOV vacuum line.