Custom TGV Delete

Hopefully this is in the right section..

 

Anywho as some may know, my engine is getting rebuilt after some major trouble. While its apart i figured itd be a good idea to tackle another project and one of the major things that i wanted to do is a TGV delete. I had issues with the sensors and i never want to deal with it again.

 

That being said, ive seen a couple of approaches to TGV deletes done at home. Luckily theres a machine shop i used to work at and im still close to all of them so i can use the shop sometimes. What i ended up doing (see the pictures for reference; excuse the lame cell pics with an oily lense):

 

1: Unscrew plate screws and remove the plates

2: Grind down the set screws that stop the screws you removed

3: Hammer the sensor end and pull the shaft out from the body

4: At this point i made plugs for the open ports out of aluminum. The plugs need to sit flush enough with the open holes and hammered in for a tight seal.

 

That about as far as i got for now (havent been on the lathe for a while so i had to reorient myself). Next things up are to grind down the extra aluminum from the plug on the inside, weld the outside of the plug, and to polish the inside of the body.

 

I dident remove that extra peice of metal inside because my former boss said something about "changing the flow of the air and that it was configured that way for a reason". Whats everyone's take on this; would it be better with or without the plate in regards to airflow? if not, i could measure things out, and port and polish. He also mentioned something along the lines of finding way to rotate or "rifle" the air; better for compression supposedly.

 

Shouts to SoxXpuppet on LS1TECH for all his help sofar~

That middle plate in TGV is the spot where air would go through when it was closed. The JDM intake runners do not have this divider in there and it is useless if you are doing the delete anyway. It is only an obstruction.

 

As for the rifling. It could make the air mix with the fuel more efficiently however that is a very short, and very wide port to rifle. Under low loads I don't think the amount of air flowing through would do to much. Maybe under WOT. I dont know how much gain you could get from it without doing the intake manifold as well to try and get the full effect of the rifling. If you have access to the tools and the time though go for it. I cant see it hurting.

 

-Jake

 

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AIM: AZP Installs | E-mail: sales@azpinstalls.com | 725 Fairfield Ave | Kenilworth, NJ 07033 | 908.248.AZP1 (2971) | T-1 Certified Amsoil Dealer

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Thanks for the input. Your right about doing the intake manifold aswell for anything that could be noticed. Although, out of curiosity and based of what you mentioned about that plate, i will remove it and see if i can get the inside tapped with offset radius threads, not too deep. I just may try it, especially because i noticed that divider is at an angle, that can really do anything but hurt the airflow id imagine.

The taper to the plate is to promote air velocity (note not flow but speed). But since you are doing the delete then again the divider is just in the way. Id be curious to see your dyno results after all this. I myself just did the delete and saw a nice gain but I was lazy and bought the JDM parts.

 

-Jake

 

http://www.pbase.com/paisan/image/91072632.jpg http://www.pbase.com/paisan/image/133406601.jpg

AIM: AZP Installs | E-mail: sales@azpinstalls.com | 725 Fairfield Ave | Kenilworth, NJ 07033 | 908.248.AZP1 (2971) | T-1 Certified Amsoil Dealer

"Race Tested, Enthusiast Approved!"

So would I. but that wont be for a bit id imagine. Probably not until i feel im somewhat "finished" with the most major things i want to do, then id bring it to CT to get it dyno'd and fine tuned. I was hoping i could get some before and after numbers though, but at this point there would be too many variables.

Alright so i wasent able to do any "rifling" in the TGV's. I dident spend enough time actually looking at them to realize that inside is not a straight shot, perfectly round. In any case here are the completed TGV's. Either side that had the sensors, the plugs were smashed in, welded on the outside, sanded down on the inside, the hole that would go across the two ports was welded shut and sanded down. I may buff out a little inside to smooth it a little more, but thats about it!