Diverter Valve - which is best?
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That depends how big your hands are...lol. It isn't that tough, it is just a very tight spot. The worst part is getting the hose clamp off the front DV...it is facing towards the front, so having long needle nose plyers helps. There is a great DIY writeup that Stephen Kaspar from IA wrote up.
Here is the link http://www.turbo911.com/showthread.php?t=287
It took me about 2 hrs. Now that I have done it, it would take me about 1:15.
Good luck!!
Here is the link http://www.turbo911.com/showthread.php?t=287
It took me about 2 hrs. Now that I have done it, it would take me about 1:15.
Good luck!!
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From my '01 996tt: 0 280 142 102
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From: Quincy, IL
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My hands are average size but this looks like a pain in the butt for DIY'er. Will I notice a difference with upgrade values vs. the OEMs? Beside the values should I also replace the hoses and if so, is there a kit that is sold with high quality valves and the hoses that are made in the same angles as the OEM valves and hoses?
As far as hoses/DV's, I bought hoses from Vivid and DV's from EVOMS. If you are just replacing the DV's, I would skip the hoses for now, but I would buy an F-hose, which attaches to the DV's. Both Vivid and EVOMS sell F-hoses seperately, and I think they are around $100. I can't speak for the EVOMS hoses, but the Vivid hoses work well and everything lines up and fits well.
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Interesting...
I know no one on this board is going to believe it, but there is an alternative Bosch valve that is actually pretty good. Part # 0 280 142 110 is a Bosch sport valve. The diaphragm is made of a different polymer and resists tearing. It also has pretty stiff spings and great response and close times.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
Check these links out for more info:
http://www.s4biturbo.com/art-dvtests.php
http://www.s4biturbo.com/art-dvtests2.php
http://www.hoppenmotorsport.com/BoschBypass.htm
Flame away because nothing that comes from bosch can be as good as aftermarket
, but I just thought I'd throw my .02 in incase anyone was interested.
I know no one on this board is going to believe it, but there is an alternative Bosch valve that is actually pretty good. Part # 0 280 142 110 is a Bosch sport valve. The diaphragm is made of a different polymer and resists tearing. It also has pretty stiff spings and great response and close times.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
Check these links out for more info:
http://www.s4biturbo.com/art-dvtests.php
http://www.s4biturbo.com/art-dvtests2.php
http://www.hoppenmotorsport.com/BoschBypass.htm
Flame away because nothing that comes from bosch can be as good as aftermarket
, but I just thought I'd throw my .02 in incase anyone was interested.
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Joined: Jul 2003
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From: Northeast US
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I know no one on this board is going to believe it, but there is an alternative Bosch valve that is actually pretty good. Part # 0 280 142 110 is a Bosch sport valve. The diaphragm is made of a different polymer and resists tearing. It also has pretty stiff spings and great response and close times.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
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Joined: Jul 2005
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I plan on doing an ECU tune on my 02 X50 in the spring...
Maybe I will try these (0 280 142 110) Bosch sport valve. Heck, at $40 bucks each, thats a nice alternative. The cheapest price diverter valves I found are the GMG at $125 each.
Id like to hear of an actual Porsche turbo running these Bosch sport valves and get some feedback.
Maybe I will try these (0 280 142 110) Bosch sport valve. Heck, at $40 bucks each, thats a nice alternative. The cheapest price diverter valves I found are the GMG at $125 each.
Id like to hear of an actual Porsche turbo running these Bosch sport valves and get some feedback.
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Correct me if I'm wrong, but isn't a Bailey valve the same design as every other billet aftermarket valve? It's a metal piston in a metal cylinder with a spring behind it. If not properly lubricated, the piston can seize in the cylinder. Why would a Bailey valve not need servicing when all other billet valves need servicing?
The stock valve uses a rubber diaphragm, so there is no metal to metal contact to be lubricated, hence no servicing.
I don't know about you, but once I put replacement valves in, I NEVER want to take them out again. That's why I think the Bosch part is the best option.
The stock valve uses a rubber diaphragm, so there is no metal to metal contact to be lubricated, hence no servicing.
I don't know about you, but once I put replacement valves in, I NEVER want to take them out again. That's why I think the Bosch part is the best option.
Last edited by Seal Grey Matte; Feb 5, 2008 at 02:12 PM.
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From: Brisbane, Australia
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Good idea, worth trying, especially as they would look stock. I'm looking at replacing my diverters when I upgrade the turbos and add an ECU flash, and the Bosch part seems like a good alternative.
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Seal Grey,
Thank you for an informative article!
As a side note, when my buddies CTR2 was being "freshened" at Ruf, Germany, I suggested they replace his Bosch Diverter Valves (of course they use the upgraded ones); with forged aluminum ones like mine, they laughed!
MK
Thank you for an informative article!
As a side note, when my buddies CTR2 was being "freshened" at Ruf, Germany, I suggested they replace his Bosch Diverter Valves (of course they use the upgraded ones); with forged aluminum ones like mine, they laughed!
MK
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Registered User
Joined: Feb 2007
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From: Virginia Beach
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Interesting...
I know no one on this board is going to believe it, but there is an alternative Bosch valve that is actually pretty good. Part # 0 280 142 110 is a Bosch sport valve. The diaphragm is made of a different polymer and resists tearing. It also has pretty stiff spings and great response and close times.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
Check these links out for more info:
http://www.s4biturbo.com/art-dvtests.php
http://www.s4biturbo.com/art-dvtests2.php
http://www.hoppenmotorsport.com/BoschBypass.htm
Flame away because nothing that comes from bosch can be as good as aftermarket, but I just thought I'd throw my .02 in incase anyone was interested.
I know no one on this board is going to believe it, but there is an alternative Bosch valve that is actually pretty good. Part # 0 280 142 110 is a Bosch sport valve. The diaphragm is made of a different polymer and resists tearing. It also has pretty stiff spings and great response and close times.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
Check these links out for more info:
http://www.s4biturbo.com/art-dvtests.php
http://www.s4biturbo.com/art-dvtests2.php
http://www.hoppenmotorsport.com/BoschBypass.htm
Flame away because nothing that comes from bosch can be as good as aftermarket
, but I just thought I'd throw my .02 in incase anyone was interested.Joe Hoppen Motorsport
6245 Clark Center Ave. Unit M
Sarasota, FL 34238
(941) 924-6380
www.hoppenmotorsport.com
Registered User
Joined: Apr 2007
Posts: 224
From: CT
Rep Power: 29
Interesting...
I know no one on this board is going to believe it, but there is an alternative Bosch valve that is actually pretty good. Part # 0 280 142 110 is a Bosch sport valve. The diaphragm is made of a different polymer and resists tearing. It also has pretty stiff spings and great response and close times.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
Check these links out for more info:
http://www.s4biturbo.com/art-dvtests.php
http://www.s4biturbo.com/art-dvtests2.php
http://www.hoppenmotorsport.com/BoschBypass.htm
Flame away because nothing that comes from bosch can be as good as aftermarket, but I just thought I'd throw my .02 in incase anyone was interested.
I know no one on this board is going to believe it, but there is an alternative Bosch valve that is actually pretty good. Part # 0 280 142 110 is a Bosch sport valve. The diaphragm is made of a different polymer and resists tearing. It also has pretty stiff spings and great response and close times.
Back in my days with the S4 (which run about the same boost as flashed 996TTs run), guys switched from the stock valves to the valves ending in 110 (or 114) and had no problems. Guys have been running these in Audis since 02 and I've never heard of one of these valves leaking. I know plenty of guys who run these valves at 1.3 bar on their Audis. Some of the more technically inclined guys did some pretty extensive testing and found that there was a real difference (see below).
The best part is they look 100% stock (no warranty concerns), they never have to be opened to lube the piston (as with every other after-market valve) and they're cheap. If I recall correctly they're around $40 bucks each.
Check these links out for more info:
http://www.s4biturbo.com/art-dvtests.php
http://www.s4biturbo.com/art-dvtests2.php
http://www.hoppenmotorsport.com/BoschBypass.htm
Flame away because nothing that comes from bosch can be as good as aftermarket
, but I just thought I'd throw my .02 in incase anyone was interested.
. As Seal said....they work perfect, look stock and cost next to nothing.
