Timing belt on 4.5 litre 80 series

Submitted: Sunday, May 21, 2006 at 18:35
ThreadID: 34101 Views:6227 Replies:5 FollowUps:9
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We've had our petrol 80 series since new in 94. We've only done just on 140K in it and those K's have mostly been obn extended trips. We've never had the timing belt done as our local Toyota dealer said not to worry about it. Now that we get it serviced elsewhere I am told to have it done. We're off on a biggy shortly, I don't mind having it done if it's neccesary but would love to know if it is.
Also...We're still on the origonal plug leads, would replacing them really make much difference. We're not having any problems. It's a fantastic car.
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Reply By: Member - Ian H (NSW) - Sunday, May 21, 2006 at 19:09

Sunday, May 21, 2006 at 19:09
Ab-so bloody-luty. Do NOT go past the reccomended mileage. If it breaks the damage will be horrible. Broken pistons, bent or broken valves and probly scoured bores.
AnswerID: 173817

Reply By: Exploder - Sunday, May 21, 2006 at 19:14

Sunday, May 21, 2006 at 19:14
Change it, it’s cheaper than rebuilding the motor when it lets go, the belts are normally only good for between 100,000-150,000k’s and at 140,000 you are pushing your luck

Same with leads they are not that expensive and at 140,000 they my not be stuffed but they are getting on, Look for burn marks on the leads where they may have been arcing out on each other.
AnswerID: 173818

Follow Up By: Exploder - Sunday, May 21, 2006 at 21:46

Sunday, May 21, 2006 at 21:46
Sorry about the miss information, I have only ever looked at the 4.2 Diesel I just assumed that the Petrol was also belt driven.
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Reply By: Axle - Sunday, May 21, 2006 at 19:46

Sunday, May 21, 2006 at 19:46
Hi Bidgee.
As stated you are so luckey.!! If it was me, i would not even fire that engine up, until a new belt was fitted. A very confident toyo dealer to give you that advice, OR A VERY STUPID ONE!!?

Regards Axle.
AnswerID: 173823

Reply By: ROBST - Sunday, May 21, 2006 at 20:14

Sunday, May 21, 2006 at 20:14
Hi Bigee 4500 petrol engines have a TIMING CHAIN and don't need changing.
Unlike the diesel engines in 80 series have a rubber timing belt.
The toyota dealer is right.
I would change the ignition leads ,i found after market TOP GUN leads fit up ok
at $150 .It did make a difference to my 80 and fixed an occaisonal miss on low accelleration.
I only ever made one mistake
and that's when I thought I was wrong!

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Follow Up By: ROBST - Sunday, May 21, 2006 at 20:24

Sunday, May 21, 2006 at 20:24
If some one is tellng you to change it they are having a lend of you.
Read your owners manual 1FZE PETROL ENGINE.it should be in the glove box!
I only ever made one mistake
and that's when I thought I was wrong!

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Follow Up By: Axle - Sunday, May 21, 2006 at 20:27

Sunday, May 21, 2006 at 20:27
So Ok! We feel like dumb chits, But why a belt on the diesel, and a chain on the petrol .??
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Follow Up By: ROBST - Sunday, May 21, 2006 at 20:45

Sunday, May 21, 2006 at 20:45
Im not sure only drive em, but may be a diesel would rattle the chain to bits!
And the the belt system is cheaper to make.
And the dealer gets to the 100k klm service fee to change it .if you cant do it your self.
I only ever made one mistake
and that's when I thought I was wrong!

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Follow Up By: Axle - Sunday, May 21, 2006 at 21:25

Sunday, May 21, 2006 at 21:25
MMM!. Maybe, When a chain gets worn it rattles( warning sound) a belt snaps no sound thats why given replacement intervals are so important.thats what the instant concern was about.

Axle
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Follow Up By: Exploder - Sunday, May 21, 2006 at 21:42

Sunday, May 21, 2006 at 21:42
Yeah that’s interesting; I thought all Toyotas had Belts Seems kinda strange to put a belt on the diesel engine and a chain on the petrol.

A chain should do 300,000K’s + if it is a good one, I would trust a chain over a belt Like you say a chain will generally give a waning a belt won’t. Hell I did 15,000k’s with F**ked Cam chain tensioners you could hear the chains rattling for 1-2 minutes every time you started the car until the oil pressure got the tentioners pumped up sounded like it was diesel. Put in the new revised tentioners and they stick out the top of the heads about an inch. LOL
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Follow Up By: Axle - Sunday, May 21, 2006 at 22:33

Sunday, May 21, 2006 at 22:33
A chain is more reliable, Gears are even better, but no longer pursued,getting back to the original post, Haha, What evers there apart from gears, CHANGE it at 100,000. kms..
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FollowupID: 429837

Follow Up By: V8Diesel - Monday, May 22, 2006 at 07:48

Monday, May 22, 2006 at 07:48
Hey Rob, does your 4.5 have a distributor or the 3 x coils setup.

If the latter, where did you get your Topgun leads from?

Cheers
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Follow Up By: Exploder - Monday, May 22, 2006 at 18:27

Monday, May 22, 2006 at 18:27
Gears are even better> And they sound cool too.
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FollowupID: 429979

Reply By: Ray Bates - Sunday, May 21, 2006 at 20:21

Sunday, May 21, 2006 at 20:21
I have a 80 series petrol. It does not have a timing belt but a chain
AnswerID: 173836

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