Exhaust option..question..
02-23-2011 | 09:27 AM
#16
Rennlist Member
Joined: Sep 2007
Posts: 12,155
Likes: 371
From: Johnson City, TN
Here are other configurations. Right is stock 84, left is custom.
This is made from 304 tubing and uses the magnaflow mufflers --- its a light system! (Cat is Eastern Catalytic 49 state, SS, for an 85)
If building your own, consider a single pipe with 3 or 3.5 diam SS and some form of durable, lightweight stainless magnaflow.
This is made from 304 tubing and uses the magnaflow mufflers --- its a light system! (Cat is Eastern Catalytic 49 state, SS, for an 85)
If building your own, consider a single pipe with 3 or 3.5 diam SS and some form of durable, lightweight stainless magnaflow.
02-27-2011 | 03:23 AM
#17
AutoX
Joined: Feb 2008
Posts: 12
Likes: 0
From: Australia
On my '82. Up front the cast iron headers are ceramic coated, then ceramic coated to Y piece into 3". Where the original front box was is a Hooker aero chamber [quality Chinese build], 3" ceramic coated pipe to an Edlebrock SS straight thru where the resonators used to be and at the tip is a SS straight thru Magnaflow. Power increase is noticeable but you have to have a rear muffler of some sort. Also need a multi chamber muffler to remove the drone.
Sounds excellent, no drone and its noisiest at 1700rpm.
Sounds excellent, no drone and its noisiest at 1700rpm.
02-27-2011 | 11:45 AM
#18
Drifting
Joined: Jan 2010
Posts: 3,334
Likes: 8
From: Nebraska
87 S4. Please tell me what you guys think of my plans. I do not care about being loud, but do not want raspy. I just recieved this 2.5 in. stainless x-pipe today as a start to my custom exaust. I am very pleased with the qaulity of this guys work. Only $35 off of Ebay. He said he builit it for a project and never finished it. I plan to go with stainless or aluminized all the way back and deleting the resonators while adding a quality rear muffler. I like the OP's suggestion of going with a y pipe after the test pipes but my local exaust shop said they can not bend 3 in. Can most shops bend 3 in.? Maybe I should just try somewhere else. Any suggestions on a a rear muffler if I am going to delete the cats and resonators? Or should I just go RMB and leave the stock resonators?
Last edited by rgs944; 02-27-2011 at 12:27 PM.
02-27-2011 | 01:39 PM
#19
Drifting
Joined: Jan 2010
Posts: 3,334
Likes: 8
From: Nebraska
One more question I am wondering about. If I decide to go with a y on the back of this x, can I just go right to it or would I want to go with dual test pipes for a short run. If weight savings is a priority then is seems to make sense to convert to the 3 in. single as quickly as possible after the x-pipe. I do not mean to hi-jack this thread but it looks like "speedtoys" and I will be doing some of the same work at about the same time.