The search for the perfect exhaust note.

[Doiff]

Hi guys, I've got a 1uz-fe and I'm trying to make the sound as nice as possible. It's currently loud enough, but is very raspy and has a cackle. Anybody got any ideas on what pipe/ muffler layout I could do? Any people with a perfect setup? what did you do?

 

[Doiff]

Come on people. I don't really want to do this by trial and error

 

[spf_lexus]

Youtube "1uz 10,000 rpm" & "ITB 1uz" both sound amazing. Whats done to the engine? What size exhaust & routing scheme?

Generally an I.D. thats too large for the engine output causes the raspiness. You want exhaust pulses to exit with as much velocity as possible but at the same time reduce back pressure. Larger the size, lower the velocity. A well bent 2.25" "X" "Y" or "H" pipe w/ 1 turbo style muffler/side will have a nice "clean" rumble.

Also, a well engineered set of headers really allow the 1uz to sing. (rushimports.com.au) (S&Sheaders.com)

 

[-Nemesis-]

The general rule of thumb is twin exhausts equals raspy and crackle, old school sound. Single (2 into 1) gives a smoother deeper note. I'm a fan of a 3" single with high flow muffler.

Here's mine:

2 into 1 single 3", with one large straight through muffler and one resonator at the back to keep it legal. If I take the resonator off it sounds like a sprint car! But still doesn't get harsh/crackly...

With boost
http://www.youtube.com/watch?v=EpjJI4vieXA

Without blower or extractors, same 3" exhaust (in my old 4Runner), save as this link:

http://www.users.on.net/~bryntrace/1UZFE Project/Sand.MOV

 

[JBrady]

gotta post this one

http://www.youtube.com/watch?v=LpdOt019tEg&feature=related

 

[Hutch-N-Such]

gotta post this one

http://www.youtube.com/watch?v=LpdOt019tEg&feature=related

heels... she so classy

 

[Turbo4L]

flat plan crank!

 

[XR8tt]

Cruise down Waikarka park and check the Stock cars there with 1uz motors ??
http://www.waikarakafamilyspeedway.co.nz/site/modules/content/index.php?id=19

Imo for sound.. Twins 2" each to muffler then 2 1/2" muffler to tail pipe..
With X pipe up front, resonators on each tail pipe.. If room allows..

 

[Turboguy]

heels... she so classy

Yeah....and stupid.

There is no way a pair of heels gives you the pedal control you need at 100+ MPH

 

[cino21]

cutouts closed.. then cutouts open




open

 

[White ls400]

this is my old ls400, stock y pipe twin 2 1/4" pipes 2 "sports mufflers" and 2 hot dogs. i reckon it sounded great
http://s1110.photobucket.com/albums...n=view&current=whitels400exhaust.mp4&newest=1

 

[RedPhoenix]

2.25 piping, magnaflow xpipe, with 2 blitz nur specs... no cats, stuff manifolds.

http://www.youtube.com/watch?v=hveBR4m3n0I

search my name for more vids.

 

[cribbj]

Sounds great Red!

We need more vids of these exhausts under real driving conditions and fly-by's, not just sitting there idling, or revving, or running on dynos.

 

[8pack]

Youtube "1uz 10,000 rpm" & "ITB 1uz" both sound amazing. Whats done to the engine? What size exhaust & routing scheme?

Generally an I.D. thats too large for the engine output causes the raspiness. You want exhaust pulses to exit with as much velocity as possible but at the same time reduce back pressure. Larger the size, lower the velocity. A well bent 2.25" "X" "Y" or "H" pipe w/ 1 turbo style muffler/side will have a nice "clean" rumble.

Also, a well engineered set of headers really allow the 1uz to sing. (rushimports.com.au) (S&Sheaders.com)

Rush headers sound unbelievable. I got the larger primaries.