How To Port and Polish the Throttle Body and Intercooler Y Pipe BONUS: Coolant Bypass - Page 2

***snorky*** · 09-09-2006, 03:23 PM

Like I said in my OP, Deadbolt told me they hadn't seen any benefits to porting the TB so i didn't do it. I'm not hating on Delaware Subaru, more power to him, especially if he saw benefits. If so i would consider it. I'm jsut going off what Deadbolt told me.

***snorky*** · 09-09-2006, 03:28 PM

Quote:

Originally Posted by ALi

nice job man! i will try this when i have time! what happen if somebody ported the pipe deeper than ¾”?

I picked 3/4 because it wasn't so deep that i couldn't fit/control my dremel in the pipe. I'm sure if you can go deeper it would be even better because the transition would be smoother. I'm not sure if it would be an appreciable amount though.

***snorky*** · 09-09-2006, 03:29 PM

i say go for an inch.... or even more if you think you can do it.

ALi · 09-09-2006, 04:02 PM

Thanks AWDrift007!!

I am thinking of sending the Y pipe to a machine shop to get it ported and polished as soon as i reach my country (maybe after 2-4 weeks time from now).. any pro n cons of having it done in a machine shop? as i dont have any dremel tools.. i will ask to port it deeper at the machine shop..

btw, how thin is too thin (if i can make it deeper, how thin the pipe 'wall' could be?)

cheers!

Pitcherman · 09-09-2006, 07:36 PM

Thanks for the info. I had read about them doing the TB coolant bypass on S2000's but frankly had no clue that our car had a coolent line running to the TB.

***snorky*** · 09-10-2006, 09:21 AM

Quote:

Originally Posted by ALi

Thanks AWDrift007!!

I am thinking of sending the Y pipe to a machine shop to get it ported and polished as soon as i reach my country (maybe after 2-4 weeks time from now).. any pro n cons of having it done in a machine shop? as i dont have any dremel tools.. i will ask to port it deeper at the machine shop..

btw, how thin is too thin (if i can make it deeper, how thin the pipe 'wall' could be?)

cheers!

I'm sure a machine shop will be able to do a better job than i did. It was easy for me so i'm sure it will be laugably easy for them. They might even have some tricks to make it even better. The only con I can think of is you have to pay for it.

Too thin, imo, is a knife-like edge. The reason i didn't do this is because it could cut into the rubber elbow and/or it could crack/chip/dent easily. Mine comes to a sharp edge but its not sharp enough to cut anything and it still has some ridgidity to it.

ALi · 09-10-2006, 09:24 AM

Quote:

Originally Posted by AWDrift007

Too thin, imo, is a knife-like edge. The reason i didn't do this is because it could cut into the rubber elbow and/or it could crack/chip/dent easily. Mine comes to a sharp edge but its not sharp enough to cut anything and it still has some ridgidity to it.

thanks man.. i didnt think about this before.. yeah.. i guess i will have to pay because i dont have the tools.. neither do my friends.. cheers mate..

***snorky*** · 09-10-2006, 09:27 AM

no problem good luck

ALi · 09-11-2006, 11:19 PM

Quote:

Originally Posted by nhluhr

I think I'll do the turbo inlet/outlet maybe this winter if I get the motivation to pull the turbo.

I know u havent done this yet, but is there specific way people can do this? i.e. do we have to dismantle the turbo before porting it up? what about the metal dust? i might do this together with the Y pipe.. (if I also have the motivation to pull the turbo myself)..

cheers!

btw.. i will also do my homework searching for this info in other forums..

HWYKING · 09-19-2006, 12:14 AM

Finally got a chance to doing this, and let me say i wish i did it sooner. followed your instructions with my dremel, but i went it about an inch instead. Car is definitley more responsive, and is much stonger in the upper rpm range. going to port 3 of my buddies as well to see if they get the same results.

***snorky*** · 09-19-2006, 04:17 AM

Awesome! I'm glad you felt a difference too... I'm not crazy!

ALi · 09-19-2006, 04:01 PM

Quote:

Originally Posted by HWYKING

going to port 3 of my buddies as well to see if they get the same results.

i am really tempted to do this as soon as possible.. whats ur setup man? do u have an aftermarket ECU?

my ecu is still stock.. but i got an EBC.. will this also helps?

ilami01 · 10-21-2006, 11:28 PM

YOU ARE THE DREMMEL MASTER!!

THAT WAS SOME CLEAN WORK SIR!

***snorky*** · 10-22-2006, 04:23 PM

Quote:

Originally Posted by ilami01

YOU ARE THE DREMMEL MASTER!!

THAT WAS SOME CLEAN WORK SIR!

Thanks man!

Got Torque? · 10-31-2006, 12:33 AM

the porting of the intercooler pipe sounds awesome and im definately going to do it to mine. great job by the way, it looks good, and im going to use that as my guide, but im gonna try to go even deeper. Probably 1 inch. Also, my 04 sti has a coupling in the cast y pipe, so its technically a 2 piece, but yours is a 1 piece. WTF! why doesnt mine have that??!!?!? I guess they changed that for 05. Pisses me off though, I wonder if there's even any benefits to porting mine because of that. Flow velocity would have to be inferior to the 1 piece. I wonder what the part number from subaru is for the 1 piece pipe, if you can even buy it separately from the intercooler.

09-09-2006, 03:23 PM	#16
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,771 Join Date: Apr 2006 Trader Rating: (23)	Like I said in my OP, Deadbolt told me they hadn't seen any benefits to porting the TB so i didn't do it. I'm not hating on Delaware Subaru, more power to him, especially if he saw benefits. If so i would consider it. I'm jsut going off what Deadbolt told me. This ad is not endorsed by this member. Please register or login to hide this ad.

09-09-2006, 04:02 PM	#19
ALi STI Driver Car: 2004 Australian Vers Location: Negara Brunei Darussalam Posts: 292 Join Date: Dec 2004 Trader Rating: (0)	Thanks AWDrift007!! I am thinking of sending the Y pipe to a machine shop to get it ported and polished as soon as i reach my country (maybe after 2-4 weeks time from now).. any pro n cons of having it done in a machine shop? as i dont have any dremel tools.. i will ask to port it deeper at the machine shop.. btw, how thin is too thin (if i can make it deeper, how thin the pipe 'wall' could be?) cheers! Last edited by ALi : 09-09-2006 at 04:11 PM.

10-31-2006, 12:33 AM	#30
Got Torque? Amateur STI Driver Car: 2004 STi Fav Mod: Perrin EBCS & Pro Tune Location: Colorado Posts: 8 Join Date: Oct 2006 Trader Rating: (0)	the porting of the intercooler pipe sounds awesome and im definately going to do it to mine. great job by the way, it looks good, and im going to use that as my guide, but im gonna try to go even deeper. Probably 1 inch. Also, my 04 sti has a coupling in the cast y pipe, so its technically a 2 piece, but yours is a 1 piece. WTF! why doesnt mine have that??!!?!? I guess they changed that for 05. Pisses me off though, I wonder if there's even any benefits to porting mine because of that. Flow velocity would have to be inferior to the 1 piece. I wonder what the part number from subaru is for the 1 piece pipe, if you can even buy it separately from the intercooler. This ad is not endorsed by this member. Please register or login to hide this ad.

09-09-2006, 03:29 PM	#18
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,771 Join Date: Apr 2006 Trader Rating: (23)	i say go for an inch.... or even more if you think you can do it.

09-09-2006, 07:36 PM	#20
Pitcherman Village Idiot Car: 04 JVP STi Fav Mod: Blitz NUR Spec R Location: B.F.E, Texas Posts: 7,959 Join Date: Apr 2004 Trader Rating: (3)	Thanks for the info. I had read about them doing the TB coolant bypass on S2000's but frankly had no clue that our car had a coolent line running to the TB.

09-10-2006, 09:27 AM	#23
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,771 Join Date: Apr 2006 Trader Rating: (23)	no problem good luck

09-19-2006, 12:14 AM	#25
HWYKING Senior STI Driver Car: 06 SGM STI Fav Mod: CUSCO 1.5 RS lsd Location: Southern Kalifonia Posts: 393 Join Date: Nov 2005 Trader Rating: (4)	Finally got a chance to doing this, and let me say i wish i did it sooner. followed your instructions with my dremel, but i went it about an inch instead. Car is definitley more responsive, and is much stonger in the upper rpm range. going to port 3 of my buddies as well to see if they get the same results.

09-19-2006, 04:17 AM	#26
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,771 Join Date: Apr 2006 Trader Rating: (23)	Awesome! I'm glad you felt a difference too... I'm not crazy!

10-21-2006, 11:28 PM	#28
ilami01 Senior STI Driver Car: White 06 STi Fav Mod: Forged Bypass Location: Dallas Posts: 391 Join Date: Feb 2006 Trader Rating: (0)	YOU ARE THE DREMMEL MASTER!! THAT WAS SOME CLEAN WORK SIR!