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Originally Posted by Steve3kgt
When the o-ring is installed correctly should it sit completely inside the turbo outlet and not be visible?
Also, what size o-ring should be used with the DN hardpipes? I used a 2 inch OD thick ring and I think it rolled up the IC pipe when I was re-installing the rear IC pipe as it's 3/4 inside the turbo outlet and 1/4 out.
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Do you still have the stock o-ring? if yes, use that, that will work. Some people say that the stock o-ring is too big to fit ont he DN IC pipe, but the trick is to coat the turbo housing with vasoline and smear a nice glob around the o-ring itself when it's on the pipe. The CAREFULLY use a flathead screwdriver to push the o-ring as far into the turbo housing while pushing the IC pipe on. The o-ring should fit snug into the little lip built inside the housing and thats where you need the screw driver to make sure it's flush. Make sure to install this end first instead of the other end that connects to the drivers side intercooler.
If the one you have right now is too big, others have used a dremel tool to shave some of the material off or I don't see why you cant take a knife and shave some of the material off.
All in all, it's not hard to do. If you can hear a loud leak or "pshhhhhing" sound when you're on the gas, it's pretty obvious that you have a leak.
