LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Need advice about cutting off mufflers

Thread Tools
 
Search this Thread
 
Old 11-20-18, 01:08 PM
  #1  
Rokas
Pole Position
Thread Starter
 
Rokas's Avatar
 
Join Date: May 2017
Location: Florida
Posts: 257
Likes: 0
Received 4 Likes on 4 Posts
Default Need advice about cutting off mufflers

Hey guys.

I saw someone do this on YouTube where he just used a grinder to cut the mufflers off and it sounded a lot better. Yes I'm gonna get extra pipe welded to make up for it but I was wondering if it's a bad idea to cut it before I have the pipes ready to be welded on? What I mean is, will that area be affected adversely by the heat? I don't see anything but metal except a strange white box in that area. Anyway, let me know. I need that rumble. I figure it will cost me less, too, if the shop just has to weld on some pipe.

PS: By now you guys must think I'm stupid.
Old 11-20-18, 01:50 PM
  #2  
RA40
Super Moderator

iTrader: (6)
 
RA40's Avatar
 
Join Date: May 2003
Location: California
Posts: 20,850
Received 463 Likes on 361 Posts
Default

You don't necessarily have to cut them off. If the pipes are in good shape they can be detached.

Some additional reading:
https://www.clublexus.com/forums/ls-...arts-pics.html

https://www.clublexus.com/forums/ls-...o-talk-in.html
Old 11-20-18, 01:55 PM
  #3  
213374U
Lexus Test Driver
 
213374U's Avatar
 
Join Date: Jan 2017
Location: TX
Posts: 946
Received 138 Likes on 119 Posts
Default

The heat shouldn't concern you, the CO2 being trapped within the body of the car should. Wait until you have the cash or time to do it right.
Old 11-20-18, 01:57 PM
  #4  
Stroock639
Lead Lap
 
Stroock639's Avatar
 
Join Date: Apr 2012
Location: Long Island
Posts: 4,828
Received 231 Likes on 175 Posts
Default

i'd wait for the pipes to be ready, it's always best to get exhaust gas as far away from the bottom of the car as possible

you'll probably have no issues from heat, especially if it's only for a few days or so, but that's my un-expert opinion as someone who's been running that setup for years


P.S.

i didn't think you were stupid, but then i looked at some pictures of your car and now i do
Old 11-20-18, 02:18 PM
  #5  
timmy0tool
Moderator
iTrader: (7)
 
timmy0tool's Avatar
 
Join Date: Sep 2008
Location: 714/949, SoCal
Posts: 6,927
Received 415 Likes on 370 Posts
Default

I ran with a muffler delete for a year or two before putting the mufflers back on to sell the vehicle.
I had no problems, even sitting in traffic it was a-OK!
no perceived exhaust smell or discomfort, nor did I see any adverse issues with the exhaust gasses affect to the undercarriage, diff, axles, and suspension.

what concerned me the most are the axle boots (rubber) and that exhaust fumes would degrade them.
only time would tell but to my first hand experience it was fine.

when you remove the mufflers, you'll notice that the pipes actually bent downwards toward the ground so there isn't a concentration of gases to a certain part of the car.
car sounded wonderful in my opinion!
Old 11-20-18, 02:20 PM
  #6  
timmy0tool
Moderator
iTrader: (7)
 
timmy0tool's Avatar
 
Join Date: Sep 2008
Location: 714/949, SoCal
Posts: 6,927
Received 415 Likes on 370 Posts
Default

and don't cut it off, just unbolt it!

from the FAQ:
https://www.clublexus.com/forums/ls-...arts-pics.html
Old 11-21-18, 05:27 AM
  #7  
Rokas
Pole Position
Thread Starter
 
Rokas's Avatar
 
Join Date: May 2017
Location: Florida
Posts: 257
Likes: 0
Received 4 Likes on 4 Posts
Default

Originally Posted by Stroock639
P.S.

i didn't think you were stupid, but then i looked at some pictures of your car and now i do
That's what I meant. Lol

Do it the proper way?! Never!

JK. I'll wait. Or if I can remove them as per the FAQ, I l might do that.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bigwes
Performance & Maintenance
5
08-30-12 11:13 AM
ISFROMHELL
Performance
22
03-23-12 08:50 PM
1badceli
Performance & Maintenance
13
01-11-06 12:30 AM
gompka
Chicago Lexus Club
7
03-30-04 05:10 PM
One HoT
SC- 1st Gen (1992-2000)
1
03-07-03 04:13 PM



Quick Reply: Need advice about cutting off mufflers



All times are GMT -7. The time now is 07:21 PM.