Okay guys, I went ahead and ordered up some aluminum Oil Cooler Pipes.
02-18-2009, 07:33 AM
#1
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Okay guys, I went ahead and ordered up some aluminum Oil Cooler Pipes.
<center><img src="http://pictureposter.audiworld.com/38899/a8pipe.jpg"></center><p>
Based on what I could find, the Buna Rubber O-ring that Audi uses is only good for 250F which means that is close to failing and will fail if the car overheats slightly. With the thermostat problems on 4.2s I think this is likely one of the design problems with this part. The plastic also seems to degrade with time..
So I went with two standard 1/16" Viton O rings on each side. The pipe is 6061 Aluminum.
O.D. with the Orings fitted is .775-.78" which means it will fit as per the original plastic pipe.
$25 dollars, shipping included with 4 Viton O-rings.
Based on what I could find, the Buna Rubber O-ring that Audi uses is only good for 250F which means that is close to failing and will fail if the car overheats slightly. With the thermostat problems on 4.2s I think this is likely one of the design problems with this part. The plastic also seems to degrade with time..
So I went with two standard 1/16" Viton O rings on each side. The pipe is 6061 Aluminum.
O.D. with the Orings fitted is .775-.78" which means it will fit as per the original plastic pipe.
$25 dollars, shipping included with 4 Viton O-rings.
02-18-2009, 07:48 AM
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Paypal via Echeck, or PM me and I'll send you my address.
O rings will be here later this week and the pipes will be here in about 1 month.
If anyone absolutely needs one, I can lathe one up.
In Austin (which doesn't have alot of Audis) the dealership is doing 3 of these a month!
That doesn't include independent shops.
If anyone absolutely needs one, I can lathe one up.
In Austin (which doesn't have alot of Audis) the dealership is doing 3 of these a month!
That doesn't include independent shops.
02-18-2009, 09:05 AM
#5
Re: Paypal via Echeck, or PM me and I'll send you my address.
My 2001 failed at 41,000 miles.The car came from Florida out of a lease, so reading your e-mail makes me believe that maybe the cars from the Southern part of the country are failing more often....
02-18-2009, 09:54 AM
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Photos of factory piece and replacement
<img src="http://farm4.static.flickr.com/3389/3291144808_57314c38ae.jpg?v=0">
<img src="http://farm4.static.flickr.com/3358/3291144660_d6f4c81421.jpg?v=0">
<img src="http://farm4.static.flickr.com/3358/3291144660_d6f4c81421.jpg?v=0">
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02-18-2009, 11:31 AM
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I believe it will seal better and prolong the life of the part.
Viton also has a 400F rating compared to the 250F rating of Buna rubber.
If an engine overheats just once, it could damage the factory buna O-ring.
If an engine overheats just once, it could damage the factory buna O-ring.