diamondmit

I'm presently at approx 95K miles and haven't changed the water pump and timing belt, and I'm wondering how far I should go.

Does anyone have any experience with their 430 (or 400) going past 90K?

thx
dd

rgarjr

iTrader: (1)

I think the belts can go up to 120K just fine.

OutlawTita

iTrader: (1)

My concern is time. It seems to me that 120K in 4 years would be better than 90K in 10 years. My point is that many circumstances have an impact on these decisions and it seems reasonable to me that Lexus guidelines in the owner's manual take most of these into account resulting in somewhat conservative guidelines which can be pushed to greater limits.......but why??

N PGeorgio

I bought a LS 400 in 1990. I drove it 350,000 miles and i changed the Timming Belts at 120,000 miles with no problem! I put in a new water Pump at 300,000 miles. Nothing wrong with the water pump but I was having some work done so I had it changed just in case!

VVT-i

Just like Outlawtitan stated that the Lexus guideline is somewhat conservative maintenance, but there a reason behind.

On the engine with VVT-i such as on the GS, LS, RX, ES and SC are Interference engine. If the timing belt break or the water pump locked up it will trash the engine. Lexus just recommend them in conservative way to prevent major damage to the engine.

How far you want to go is up to you? It one of those things like your light bulb that you'll never know when it will go out, but Lexus never recommend you to replace all the light bulbs at 90K miles....

sha4000

iTrader: (1)

i took mine up to 120k b4 i changed it

sonyman

Those belts can go considerably farther than 90k, but on an $8000 motor is it really worth the risk? Your engine is an interference one, so if it breaks you can kiss your pistons and valves goodbye. The only sure way to tell how much life is left in the belt without removing it is to pull off one or more of the timing belt covers and see for yourself. Personally, I'd change it at 90k. Not only does it provide peach of mind, it may also help if you decide to resell the vehicle by showing that you maintained the vehicle by the book and in a timely manner.

Scott

DetMich1

I did the timing belt replacement on my GS400 at about 105,000 miles. My SC400 is in need of a major service again. It currently has 351,000 miles and I think the last time the timing belt was replaced was at 125,000 mi, so long overdue. Even so, run just like the day I bought it in 1992, engine pulls strong and smooth, A/C is ice cold, mpg is still 22-23 at 80 mph on the freeway with the A/C on, and oil consumption is within factory spec for a new car according to the Lexus service department.

JLAM

iTrader: (1)

I just got mine changed at 125,000 miles.

Trexus

I had my my timing belt replaced at 90K and 180K miles. Currently I'm at 255K miles. I still have the original water pump and I will change that when I change the timing belt again at 270K miles. It's better to be safe than sorry...

T0ked

iTrader: (2)

Got my timing belt done at 100k miles, but at the age of 12 years. The belt looked fine, but the idler pulley and the tensioner looked like they needed replacing. Also did the water pump, that loked good, too, but it was more of an age + mileage thing.

SC400DAVE

I have just over 170,000 miles on the original timing belt and water pump. I have a92 SC 400 I will change them out on my 180,000 mile sevice IF the mechanic says I need it.

UTGS400

What have you paid to have the timing belt and water pump replaced? My dealership just quoted me $1800

skurks507

I was just quoted $910 with labor and parts for timing belt, serp belt, water pump, new tensioner, everything at my local Toyota dealership. I think thats a great deal. What about everyone else?

UTGS400

What type of lexus do you drive? I am afraid to take my GS4 to a toyota dealership as it is not an engine they have in ther line....they already screwed it up once and had to pay for the lexus dealership to fix it.

EDIT: BTW, $910 for all that work sounds great!!