Ramon

Just wondering if the 3.5 litre engines are using timing belts or timing chains... Anyone know?

Bichon

Timing chain, thankfully.

Ramon

That's what I was hoping for.

kayotik

iTrader: (6)

I'd like to note that both the IS350 and the IS250 use TIMING CHAINS.

IS-SV

Good to know timing chains are used on IS. I still remember the old days of problems with timing belts on Audis and Subarus.

Robs IS250

iTrader: (4)

doesnt it have a timing rope? LOL sorry i had to

speed_Demo

Damn, timing chains last at least 75k miles.

kayotik

iTrader: (6)

uh..... timing chains require no maintenance from what i've been hearing....

LiCelsior

iTrader: (32)

sometimes the chains get loose and u'll need to replace it. but u'll hear it first.

speed_Demo

maintenance require for all parts that wear/tear. Some last longer than other. belt vs chains

IS-SV

Yes, usually designed to last life of the engine.

wolverine

iTrader: (9)

most of the cars i replace timing chains on were from the 70s. so timing chains lasts hella long. i think most toyotas/ lexus comes with chains now

ISBU

Lexus still uses belt on their gx470.

AM1

iTrader: (6)

chain? thats good to know.

drc2465

Just out of curiosity what type of noises would you typically hear when you are having timing chain issues. My 07 is making what sounds like a rattling noise, and is very slow to respond when I press the gas. I though it could possible be a timing chain issue since it is pushing 115k. Any feed back is appreciated.