11-19-2000, 11:54 PM
hello I have TAP damp valve (adjustable) and wonder how anyone else set to? if you have one please let me know what is good setting. right now, mine is set for 12 psi(the lowest).
does anyone have oil catch tank on A4 turbo? if you do, how is it working for you? would you recomend getting one? how was the instration?
11-20-2000, 12:48 AM
Works well, essential if you hammer your car around a track.
One thing to watch are you track regulations.
I have to run a 2 liter tank as i am under 2.5 liter engine capacity (Engine size)
The Catch can is from Canton.
11-20-2000, 06:11 AM
Can you explain how it would get hooked up? I have a TT and track and auto-x te car quite a bit.
11-20-2000, 01:12 PM
I am having one made for my GSR.
As stated it removes the oil from the intake tract, which can cause detonation.
11-20-2000, 06:58 PM
Most cars run a Crank Case gas recirculation system.
So in the 1.8T, there is a Vent from the crank case that is plumped along a (Black) metal tube that you can see above your turbo where your oil heat shield is.
The feed into a Check Valve and into your Intake side of turbo.
Normally you would only get a small vapour caused by Blow by of pistons that gets recirculatied and burned of on your engine.
How ever It is possible that in extreme track conditions with throwing the car around sidways the a "blob" of oil will enter that tubing, and find its way to the front of your turbo.
If the Blob is large enough, will splatter against your compressor blades, Coat you intercooler and Plumbing, and enter you cylinders, If enough oil is presant, this will infact foul your Plugs causing immediate loss in power and some very bad sounding noises.
This infact has happened to me before and initial impression was I popped a turbo.
By adding a oil catch can, you feed the oil vent tubing from oil crank case into a "Catch can" with a baffled air vent to atmosphere.
Then you remove the metal pipe to the fron intake of turbo and seal of that fitting.
So any oil that may splash into the piping will end up in the catch can, and no oil at all will enter the turbo and your engine.
If correctlty setup and if space permits you can plump the catch can oil back into the engine.
11-20-2000, 10:22 PM
any tip for bypass valve?
film in the intake hose. Where is it available; was it custom made, or is it available as a complete kit?
11-21-2000, 08:20 AM
<center><img src="http://www.urs4.com/images/TAP2.JPG"></center><p>If you are using the TAP valve as a bypass valve (what all the Brits on this board keep calling a 'diverter' valve) then KEEP THE VALVE AT IT'S LOWEST SETTING. I didn't mean to yell, but that is very important.
The adjustment feature is only useful if you use the TAP valve as a BOV (which I don't recommend, but that hasn't seemed to stop anyone). If this is how you choose to use this valve, then follow the TAP instructions, which come with it. Basically, start at the lowest and keep incrementally advancing the spring preload until it does what you want.
For more information, go to the link below.
HTH,<ul><li><a href="http://www.urs4.com/TAP%20bypass%20valve.html">TAP bypass valve review</a></li></ul>
Mach V Dan
11-21-2000, 06:54 PM
Venting the crankcase to atmosphere is a definite emissions no-no. It's against the law on any car driven on a public road.