synthtk Posted November 9, 2007 Share Posted November 9, 2007 So after being at near tears every time I drove the car for the past few months due to the exhaust fumes entering the cabin, I decided it was time to build a real exhaust system. Originally my neighbor provided me some 4" piping off a diesel bus originally (free w00t!) but this was just too big for the car so I went ahead and went with a 3.5" system. I bought almost everything from Summit Racing and it cost me around $200 for everything except the stock Skyline downpipe, I ended up getting the tip and hanger from Autozone because those parts were delayed from Summit. Off the turbos I used parts of the piping off the stock downpipe, mainly the flanges and some of the 2.25" tubing to come down under the car. From that point the 2.25" piping goes into a 2.25" to 2.5" adapter which then goes into the 2x2.5" to 3.5" Y collector. From the collector back to the exhaust I use 3.5" piping to a 3.5" straight through exhaust to a bling bling Autozone "clamp on" muffler tip which is 4". There are two bends from some 3.5" piping my neighbor gave me, into and out of the muffler, but other than that its all angle cut straight pipe. Y-Collector is a 2.5" to 3.5" Flowmaster with Summit part #: FLO-Y250350 Muffler is 3.5" straight through 14" long Stainless Steel MagnaFlow with Summit part #: MPE-14161 Piping is 3.5" 4' long aluminized steel with Summit part #: SUM-640035, I got two of these. Reducers are Dynomax 2.25" to 2.5" with Summit part #: WLK-41961, I got two of these. Tip is a random Autozone special 2.75 "clamp on" to 4" tip. Hangers are universal autozone hangers, I got one with a rubber loop at one end and metal L and then one that has a rubber strap to metal on both ends for welding/bolting to the body/piping. Unfortunately what I forgot to get was some 3.5" flanges... so the exhaust at this point is one complete piece, which is a huge PITA to put on, the next time I order from summit I will get two sets of flanges to break the exhaust into 3 pieces. At that same time I will paint it with high-temp black paint. Downpipe side done, using the flanges, piping (angles changed), and flex pipe from the Skyline downpipe. To get some additional clearance between the collector and the transmission I ground down some extra webbing on the transmission. Piping to the end of the differential. The piping has a good 1" spacing around the body pan underneath. Finished product, for the tip I cut off the back off that had the neck down section to the "clamp on" section and welded it onto a slight bend coming off muffler. There is one hanger at front of the muffler that bolts to the fuel cell cradle and then another by the exhaust tip that goes to the stock muffler mounting position behind the rear bumper. The unfortunate part of this? It was getting late in the day and I was getting tired so when aligning the tip to come out I forgot to take into consideration that the car was sitting at an angle, so now the tip comes out at a funky angle... project for a future date. Under body shot, the exhaust definitely the lowest point on the car but I have not had any problems with scraping except once coming out of a steep driveway. More photos here: http://picasaweb.google.com/rb240z/20070930Exhaust While I have done most of the fab in this swap project except the aluminum bits I am far from a pro welder so yeah the welds aren't the prettiest things in the world, but not bad considering I am using a Harbor Freight MIG welder I think. Quote Link to comment Share on other sites More sharing options...
chrism Posted November 9, 2007 Share Posted November 9, 2007 Looks great. I'm getting ready to put in a buddy club spec II catback system. I'm gonna get the downpipe custom made. The tricky part for me will be getting past the tranny mount. It doesn't fit tight inside the tunnel like I want but we will see. Right now I'm running open header. I have to look through the gas mask to drive. I'll miss that queasy feeling when it's done. 'not' Quote Link to comment Share on other sites More sharing options...
turbo_fb Posted November 10, 2007 Share Posted November 10, 2007 Look like it's going to be loud ! Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted November 12, 2007 Share Posted November 12, 2007 That won't be too loud... well I take that back I had a full 3" on my L motor with basically the same muffler. It was loud but not unbearable. Looks great, I was looking at piping because I need to do the same for my 240sx. Kudos to you! Nice job! Quote Link to comment Share on other sites More sharing options...
synthtk Posted November 15, 2007 Author Share Posted November 15, 2007 Surprisingly, the exhaust is not too loud, although I was used to driving it around with basically open downpipes..... Quote Link to comment Share on other sites More sharing options...
triple B Posted November 16, 2007 Share Posted November 16, 2007 looks good man Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted November 16, 2007 Share Posted November 16, 2007 You motivated me to buy everything I needed to redo my DP all the way to my catback Thanks! Evan Quote Link to comment Share on other sites More sharing options...
synthtk Posted November 16, 2007 Author Share Posted November 16, 2007 You motivated me to buy everything I needed to redo my DP all the way to my catback Thanks! Evan Awesome, be sure to get some pics and share. What size piping and style of muffler did you go with? Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted November 17, 2007 Share Posted November 17, 2007 I have an espilir GT500 catback on my car. Its just a matter of building everything from the flange forward. I have a 3" downpipe right now but the fitment could be better and it hangs a bit too low. Ill post pics when I get it changed. Thanks! - Evan Quote Link to comment Share on other sites More sharing options...
richkcmo Posted September 13, 2009 Share Posted September 13, 2009 Wow nice work there! I hope I could do that someday but for now I have to settle with my Y Scavenger Series I got from here for now. Quote Link to comment Share on other sites More sharing options...
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