No boost over 20 PSI

rainmanjam · 10-08-2005, 01:32 PM

List of Mods:
APS SR55 Turbo
DR725 FMIC
CAI
Blitz SBC-ID
Worx Tuning BOV

I have checked all of the hoses for the intercooler. No cracks or breaks in the couplings. I can adjust the boost down but nothing doing past 19PSI ( I was pushing 23). Is there anything else I should check?

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spooln04 · 10-08-2005, 05:01 PM

are you running and external or internal gate? is the gate blowing open? Is the bov blowing open. You may need bigger springs? Not sure though

rainmanjam · 10-08-2005, 05:27 PM

Internal, Nither is blowing open as far as I can tell.

spooln04 · 10-08-2005, 06:29 PM

you used to be able to run 23 and then all of a sudden you couldn't go past 19? That sounds wierd, can you explain this further?

rainmanjam · 10-08-2005, 07:18 PM

Doing a 4 gear pull on a strip. I got up to 4600RPM at 15.7 PSI. At that time, I heard a small pop like a intercooler hose poped off. I decelerated and got it home with limited boost (under 5 PSI max). I checked all of my hoses (I used C-clamps on all of my intercooler hoses). I checked my BOV.. it was a little dry so I reoiled it and slid it back in. Checked my hoses going to and from the BOV. Got it back out and noted that I was only getting 19 PSI max.

rainmanjam · 10-09-2005, 07:29 AM

Figured out what the issue was. On the Worx BOV, the top portion was slightly warped. Prob due to the cold air on the inside of the BOV and hot air outside from the engine compartment. The warping caused PSI on top of the piston was out of balance with the bottom. The air leaked along the side in the gap between the piston and the piston bore and out the holes to the atmosphere. The spring was the only thing holding the boost. I am going to see if I can get a replacment or mod my stock one. TBC...

g0tb00st · 10-09-2005, 09:12 AM

Quote:

Originally Posted by rainmanjam

Figured out what the issue was. On the Worx BOV, the top portion was slightly warped. Prob due to the cold air on the inside of the BOV and hot air outside from the engine compartment. The warping caused PSI on top of the piston was out of balance with the bottom. The air leaked along the side in the gap between the piston and the piston bore and out the holes to the atmosphere. The spring was the only thing holding the boost. I am going to see if I can get a replacment or mod my stock one. TBC...

i have a extra WORX spring laying around, you need it? I think it might even be a stiffer spring because I had asked WORX for it but not too sure since I sold my BOV a long time ago.

PM me if you want it.

Erik

rainmanjam · 10-09-2005, 10:09 PM

nah...Still doesn't solve the issue of the air leaking...just a stop-gap around the real issue. Might look into the APS BOV or another WORX altogether....

Reporting Live from Hawaii....... Anyone want anything!?!?!

rich728 · 10-10-2005, 12:17 AM

dump the WORX bov. go back to stock valve. You should be able to hold boost again.

rainmanjam · 10-10-2005, 01:28 AM

What about the stock valve mod?

rich728 · 10-10-2005, 07:09 AM

Quote:

Originally Posted by rainmanjam

What about the stock valve mod?

it works well. put it in a vice and crush the cap a few mm.

rainmanjam · 10-10-2005, 07:23 PM

What does that do?

10-08-2005, 01:32 PM	#1
rainmanjam Scooby Newbie Member#: 64581 Join Date: Jun 2004 Chapter/Region: NWIC Location: Lake Oswego, Or Vehicle: 2004 STI Black	No boost over 20 PSI List of Mods: APS SR55 Turbo DR725 FMIC CAI Blitz SBC-ID Worx Tuning BOV I have checked all of the hoses for the intercooler. No cracks or breaks in the couplings. I can adjust the boost down but nothing doing past 19PSI ( I was pushing 23). Is there anything else I should check? * Registered users of the site do not see these ads.

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10-08-2005, 05:01 PM	#2
spooln04 Scooby Specialist Member#: 85421 Join Date: Apr 2005 Chapter/Region: Tri-State Location: North Jerz Vehicle: 92 EG all mota	are you running and external or internal gate? is the gate blowing open? Is the bov blowing open. You may need bigger springs? Not sure though

10-08-2005, 05:27 PM	#3
rainmanjam Scooby Newbie Member#: 64581 Join Date: Jun 2004 Chapter/Region: NWIC Location: Lake Oswego, Or Vehicle: 2004 STI Black	Internal, Nither is blowing open as far as I can tell.

10-08-2005, 06:29 PM	#4
spooln04 Scooby Specialist Member#: 85421 Join Date: Apr 2005 Chapter/Region: Tri-State Location: North Jerz Vehicle: 92 EG all mota	you used to be able to run 23 and then all of a sudden you couldn't go past 19? That sounds wierd, can you explain this further?

10-08-2005, 07:18 PM	#5
rainmanjam Scooby Newbie Member#: 64581 Join Date: Jun 2004 Chapter/Region: NWIC Location: Lake Oswego, Or Vehicle: 2004 STI Black	Doing a 4 gear pull on a strip. I got up to 4600RPM at 15.7 PSI. At that time, I heard a small pop like a intercooler hose poped off. I decelerated and got it home with limited boost (under 5 PSI max). I checked all of my hoses (I used C-clamps on all of my intercooler hoses). I checked my BOV.. it was a little dry so I reoiled it and slid it back in. Checked my hoses going to and from the BOV. Got it back out and noted that I was only getting 19 PSI max.

10-09-2005, 07:29 AM	#6
rainmanjam Scooby Newbie Member#: 64581 Join Date: Jun 2004 Chapter/Region: NWIC Location: Lake Oswego, Or Vehicle: 2004 STI Black	Figured out what the issue was. On the Worx BOV, the top portion was slightly warped. Prob due to the cold air on the inside of the BOV and hot air outside from the engine compartment. The warping caused PSI on top of the piston was out of balance with the bottom. The air leaked along the side in the gap between the piston and the piston bore and out the holes to the atmosphere. The spring was the only thing holding the boost. I am going to see if I can get a replacment or mod my stock one. TBC...

10-09-2005, 10:09 PM	#8
rainmanjam Scooby Newbie Member#: 64581 Join Date: Jun 2004 Chapter/Region: NWIC Location: Lake Oswego, Or Vehicle: 2004 STI Black	nah...Still doesn't solve the issue of the air leaking...just a stop-gap around the real issue. Might look into the APS BOV or another WORX altogether.... Reporting Live from Hawaii....... Anyone want anything!?!?!

10-10-2005, 12:17 AM	#9
rich728 Scooby Specialist Member#: 40328 Join Date: Jul 2003 Chapter/Region: South East Location: MiamiFL Pastelito Racing/SFSOC Vehicle: 2004 WRX STi BSP #728	dump the WORX bov. go back to stock valve. You should be able to hold boost again.

10-10-2005, 01:28 AM	#10
rainmanjam Scooby Newbie Member#: 64581 Join Date: Jun 2004 Chapter/Region: NWIC Location: Lake Oswego, Or Vehicle: 2004 STI Black	What about the stock valve mod?

10-10-2005, 07:23 PM	#12
rainmanjam Scooby Newbie Member#: 64581 Join Date: Jun 2004 Chapter/Region: NWIC Location: Lake Oswego, Or Vehicle: 2004 STI Black	What does that do?