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#1185364 - 07/03/08 12:19 PM Re: 2001 Lexus ES300 timing belt advice [Re: astraelraen]
Quest Offline


Registered: 12/19/04
Posts: 6318
Loc: beaver land EH?
 Originally Posted By: astraelraen
Timing belts are evil. Why haven't all manufacturers gone to chains yet?


LOL! Who sez timing chains aren't evil? (other than less prone to snapping???)

To me, both chains and belts are necessary evils for if chains and their tensioning rails start to wear, that's where all the trouble comes from.

With many high-end engine manufacturers going after HNC timing-belts these days (which lasts at least 2+times longer than ordinary OE belts as far as service intervals's concerned), one should never be afraid of the T-belt anymore.

Folks who got smitten by outrageous cost of servicing T-belts mainly has to do with the associated water pump changes, idler-tensioning pulleys, etc. where in the case of t-chain, the chain tensioner would still fail as engine reaps the mileage, and water pump may have been neglected/ignored during regular servicing of the engine until it drastically fails.



Q.
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#1185369 - 07/03/08 12:27 PM Re: 2001 Lexus ES300 timing belt advice [Re: flanso]
Quest Offline


Registered: 12/19/04
Posts: 6318
Loc: beaver land EH?
 Originally Posted By: flanso
The shop manual includes instructions to remove the pulleys from the cams during the timing belt r&r. I am uncertain why; is the 1MZ-FE prone to failure of those seals?


While I'm certainly would like to see you become successful in this timing-belt change endeavour, Ialso sense that you aren't mechanically-competent in this particular regard (RE: t-belt seriving).

Plse take a deep breath and ask yourself if you think you can handle all of these w/o suffering from any mishaps or serious consequences, and/or you have enough mechanical knowledge to take on such task.

Being cheep/economical is certainly not a bad thing these days but granted that you aren't really/serious competent on this job, might as well pass the ball to someone who is doing this for a living. It saddens me to see a nice car goes bad simply because of a bad/poorly done T-belt job done by someone who doesn't know what they are doing.

Please take good care of yourself.

Q.

p.s. Please get a factory service manual and torque (double-check) all the nuts and bolts to spec (esp. the cam/crankshft bolts where they may fail if you don't follow the specs).
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#1185403 - 07/03/08 12:57 PM Re: 2001 Lexus ES300 timing belt advice [Re: Quest]
PT1 Offline


Registered: 02/06/07
Posts: 5746
Loc: near the mistake
FWIW I had my 2004 Lexus belt & pump done at 89k for about $400.
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#1187014 - 07/06/08 12:20 AM Re: 2001 Lexus ES300 timing belt advice [Re: Drew99GT]
harley145000 Offline


Registered: 08/15/07
Posts: 377
Loc: none
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#1187105 - 07/06/08 06:47 AM Re: 2001 Lexus ES300 timing belt advice [Re: LT4 Vette]
PT1 Offline


Registered: 02/06/07
Posts: 5746
Loc: near the mistake
 Originally Posted By: LT4 Vette
$300 for the entire job ?


Are you sure? At a Lexus dealer that would be an oil change..
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#1187124 - 07/06/08 07:31 AM Re: 2001 Lexus ES300 timing belt advice [Re: PT1]
Paul56 Offline


Registered: 05/28/08
Posts: 383
Loc: San Antonio, Texas
 Originally Posted By: PT1
 Originally Posted By: LT4 Vette
$300 for the entire job ?


Are you sure? At a Lexus dealer that would be an oil change..


When the water pump on my 1999 Toyota Camry started seeping the dealer charged $650 just for that item alone.



Edited by Paul56 (07/06/08 07:32 AM)

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#1187466 - 07/06/08 06:28 PM Re: 2001 Lexus ES300 timing belt advice [Re: Paul56]
Quest Offline


Registered: 12/19/04
Posts: 6318
Loc: beaver land EH?
 Originally Posted By: Paul56
 Originally Posted By: PT1
 Originally Posted By: LT4 Vette
$300 for the entire job ?


Are you sure? At a Lexus dealer that would be an oil change..


When the water pump on my 1999 Toyota Camry started seeping the dealer charged $650 just for that item alone.



With Westcoast dealerships typically charging over 100bux/hr on labour, it's not that difficult to reap up to 650 parts+labour.

Q.
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#1187527 - 07/06/08 07:40 PM Re: 2001 Lexus ES300 timing belt advice [Re: The Critic]
ocrstar Offline


Registered: 07/30/04
Posts: 213
Loc: N. Michigan
 Originally Posted By: The Critic
...The engine is not an interference type, so this one is a good engine to learn timing belt service on. ...


The 2001 IS an interference engine. The older non-vvt-i (variable valve timing with intelligence)1mzfe's are non interference.

I did my 2000 ES300 vvt-i timing belt just fine, but the hardest part was the crank bolt. An air impact gun would not take it off. Only cranking the starter just a touch with a breaker bar/socket attached to the bolt would do it. I did not remove the spark plugs either. That's a whole nuther headache which doesn't need to be added to the t-belt. You have to remove the exhust manifold, and wires & brackets to do that. If your front bank of plugs (the easy ones)look good, chances are your rear bank of plugs are good.

Getting the bolt tighted up was easier. I used the impact gun which did not spin the crank, and used threadlocker on the bolt.

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#1217782 - 08/16/08 04:01 PM Re: 2001 Lexus ES300 timing belt advice [Re: PT1]
flanso Offline


Registered: 12/26/06
Posts: 318
Loc: Houston, TX
Done! I did not remove the cam sprockets or idler pulleys as the factory manual suggests. Instead, I checked the idler bearings as best I could by feel. A dental mirror was used to check for leaks around the cam seals. Using the OE Lexus belt made the job somewhat easier because the belt has timing marks stamped on it. The job took about 4 hours and wasn't too bad.

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#1217926 - 08/16/08 09:16 PM Re: 2001 Lexus ES300 timing belt advice [Re: flanso]
The Critic Online   crying


Registered: 08/30/04
Posts: 17649
Loc: Walnut Creek, CA
 Originally Posted By: flanso
Done! I did not remove the cam sprockets or idler pulleys as the factory manual suggests. Instead, I checked the idler bearings as best I could by feel. A dental mirror was used to check for leaks around the cam seals. Using the OE Lexus belt made the job somewhat easier because the belt has timing marks stamped on it. The job took about 4 hours and wasn't too bad.

Could someone please explain to me why it's beneficial to have timing marks on the belt itself?

In auto class, I was taught to line up the cam sprockets and the crankshaft with the corresponding marks, install the timing belt, then set the tensioner. Why would the orientation of the timing belt matter if the cam sprockets and the crankshaft was lined up at the correct marks?

Thanks.

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#1217937 - 08/16/08 09:37 PM Re: 2001 Lexus ES300 timing belt advice [Re: The Critic]
ocrstar Offline


Registered: 07/30/04
Posts: 213
Loc: N. Michigan
I agree with that, but even the Gates belt that I installed on my 1MZFE had the timing marks on it, and those marks are completely off after one revolution. I went by the marks on the cam sprockets & crank.

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#1218199 - 08/17/08 10:34 AM Re: 2001 Lexus ES300 timing belt advice [Re: PT1]
Eddie Offline


Registered: 12/07/03
Posts: 6658
Loc: Florida, Cape Coral
What I don't like about TBs is it another high matenance item cost wise. My Suby dealer wanted $600 that included a WP. and although the interval is 105,000 miles it is still a big piece of change. I did it myself with OEM dealer parts for ~ $150 and 2 hours of my time. I loved the sound of the roller timing chain in my Saab at 205,000 miles.
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#1218403 - 08/17/08 05:31 PM Re: 2001 Lexus ES300 timing belt advice [Re: Eddie]
flanso Offline


Registered: 12/26/06
Posts: 318
Loc: Houston, TX
The belt on the 1MZ-FE is quite long and when you install the new belt, it is difficult to tell if there is an extra tooth of slack between sprockets. Having marks on the belt resolves that uncertainty. Ocrstar is correct the marks on the belt no longer align with the marks on the pulley and sprockets after the engine is turned over. After that, the marks on the crank pulley, and the two cam sprockets must align with the marks on the casting behind, without regard to the marks on the belt, on every other engine revolution.

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#1219041 - 08/18/08 02:51 PM Re: 2001 Lexus ES300 timing belt advice [Re: flanso]
kschachn Offline


Registered: 12/26/05
Posts: 2488
Loc: Upper Midwest
You did right when you bought the Toyota belt. I have tried the Gates belt before, and besides being stiffer and thicker than the OEM (which makes it harder to stay in place) the marks on that belt were off. As you point out, there is a way to put that belt on that seems right but it isn't. You are off by one tooth. You gotta almost stretch the belt to get it on that back sprocket the right way.

The Gates belt had the marks off ever so slightly but it was enough that there was NO WAY you could get it onto the engine! No way, no how that line could fall into the sprocket. I took that belt back to NAPA and bought an OEM belt which went on fine.

I've changed the timing belt on 1MZ-FE engines about 10 times. I've got it down now where I can get the old one off in about an hour which isn't bad.

On that idler pulley though (there are two of them), my upper one failed at about 150,000 miles. It made a knocking sound at a certain RPM that sounded like rod knock. I didn't replace them at the first timing belt change, so I had to change out the replacement a little early. No big deal but I would suggest (as does my local dealer) that you change the pulleys every time. It's an added expense for sure but they do fail. It gets hot under that cover.
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1994 BMW 530i, 188K
1996 Honda Accord, 201K
1999 Toyota Sienna, 302K
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