Lindsey??? Exhaust???
10-13-2003 | 10:34 PM
#17
Rennlist Member
Joined: Jun 2001
Posts: 9,485
Likes: 1,068
From: Ohio
It's due to a galvanic couple. The first thing that will happen is the free aluminum in the coating will sacrifice itself to protect the stainless. Next the iron/aluminum alloy layer will do the same. Finally the carbon steel will be sacrificial to the stainless.
If the bolts you plan to use are for the flanges go ahead. The mass of the flange will will save you. Also the flange will most likely be low carbon anyway. The flanges will be 1/4 to 5/16" thick where the pipe wall is probably in the range of 0.060". Lighter on the outside of the bend heavier on the inside. The light gauge of the pipe is the issue.
A few years back Ford used stainless bands to hold the heat shields on some of their mufflers. The stainless bands looked great but the muffler was sawed in half from corrosion under the band. Ford doesn't do that any more.
VW welded an aluminized low carbon steel muffler to a 304 pipe. The muffler failed at the weld on the carbon side. The 304 pipe was fine.
With the increased exposure to warranty issues and emissions the auto makers take a serious look at material selection in exhaust systems.
Alan C.
If the bolts you plan to use are for the flanges go ahead. The mass of the flange will will save you. Also the flange will most likely be low carbon anyway. The flanges will be 1/4 to 5/16" thick where the pipe wall is probably in the range of 0.060". Lighter on the outside of the bend heavier on the inside. The light gauge of the pipe is the issue.
A few years back Ford used stainless bands to hold the heat shields on some of their mufflers. The stainless bands looked great but the muffler was sawed in half from corrosion under the band. Ford doesn't do that any more.
VW welded an aluminized low carbon steel muffler to a 304 pipe. The muffler failed at the weld on the carbon side. The 304 pipe was fine.
With the increased exposure to warranty issues and emissions the auto makers take a serious look at material selection in exhaust systems.
Alan C.
10-13-2003 | 11:40 PM
#18
Burning Brakes
Joined: Jun 2003
Posts: 1,222
Likes: 0
From: Enfield, CT
Originally posted by Alan C.
With the increased exposure to warranty issues and emissions the auto makers take a serious look at material selection in exhaust systems.
Alan C.
With the increased exposure to warranty issues and emissions the auto makers take a serious look at material selection in exhaust systems.
Alan C.
(hope I did this quotation thing correctly)
10-21-2003 | 07:12 AM
#20
Rennlist Member
Joined: Oct 2002
Posts: 1,110
Likes: 0
From: Melbourne, Australia
I just installed the lindsey "mild steel' exhaust on my car.
This included a cat and flowmaster muffler. I got the jet hot coat option and it looks pretty swish. Hopefully this will extend its life also rust wise.
The only issues I have are with the exhaust hanger just downstream of the cat, can't quite get the exhaust up high enough to attach the bolts. This is because of the cat being pressed up against the heat shield. Also the exhaust tip is a bit long, extends beyond the rear bumper.
Sounds mean!
This included a cat and flowmaster muffler. I got the jet hot coat option and it looks pretty swish. Hopefully this will extend its life also rust wise.
The only issues I have are with the exhaust hanger just downstream of the cat, can't quite get the exhaust up high enough to attach the bolts. This is because of the cat being pressed up against the heat shield. Also the exhaust tip is a bit long, extends beyond the rear bumper.
Sounds mean!
