Well, I did some measuring and it appears that the garrett turbo outlet is just about 2" in OD / slightly larger than 1.75" ID. The intake "spigot" is just over 1.75" as well...
I'm opting for 2" piping for my setup. I figure it'll keep the ID roughly diameter constant from turbo to intake and hopefully keep velocity up. Should be easier to squeeze into the mk1 as well...
I'm using a Mitsubishi Starion / Conquest TSI intercooler with modified end tanks. Should work pretty well, all metal design and it was cheap on ebay ($40).
I had the option of doing stainless piping, but I went with 2" mandrel bends from Summit instead. At $15 each, the bends are cheap and I'll be able to wrinkle coat them just like my valve cover and the timing belt cover. I did have to order an aluminum 2" mandrel bend to redo the intercooler inlet/outlet, but that was around $30 for a quality 6061 piece (I've heard the ones on ebay are suspect / low quality).
The only thing I've got left is the silicone couplers and I won't know which ones I need until we start fabbing it up. Anyone got a source for cheap (but quality) silicone hoses? Some of those things can be $30-40 each.
Topic: 1.6TD intercooler piping diameter (Read 8204 times)
