Hi,
Would like to know when should I change a timing belt in a GS 300?

[quote name='saji' date='16 July 2010 - 10:53 PM' timestamp='1279317196' post='726630']
Hi,
Would like to know when should I change a timing belt in a GS 300?
[/quote]

Just BEFORE it breaks!

Seriously, peoples opinions on this vary, I'm not sure what proper interval is but every 60,000 would be reasonable.

[quote name='saji' date='16 July 2010 - 10:53 PM' timestamp='1279317196' post='726630']
Hi,
Would like to know when should I change a timing belt in a GS 300?
[/quote]
Mk 1 GS 300 is every 60k or every 6 years, whichever is soonest. Not sure on Mk 2. A quick phone call to any Lexus dealer would be quickest way to find out if you don't have an owners manual.

[quote name='dave1' date='17 July 2010 - 09:17 PM' timestamp='1279401443' post='726713']
[quote name='saji' date='16 July 2010 - 10:53 PM' timestamp='1279317196' post='726630']
Hi,
Would like to know when should I change a timing belt in a GS 300?
[/quote]
Mk 1 GS 300 is every 60k or every 6 years, whichever is soonest. Not sure on Mk 2. A quick phone call to any Lexus dealer would be quickest way to find out if you don't have an owners manual.
[/quote]

I have just changed mine (that crank pulley was pig to undo) and it had done 95,000 miles. It was in perfect condition - could have gone a lot longer. The tensioner pulley was fine . Small amount of play but smooth running)

[quote name='WilliamJ' date='20 July 2010 - 12:05 PM' timestamp='1279656350' post='727082']
[quote name='dave1' date='17 July 2010 - 09:17 PM' timestamp='1279401443' post='726713']
[quote name='saji' date='16 July 2010 - 10:53 PM' timestamp='1279317196' post='726630']
Hi,
Would like to know when should I change a timing belt in a GS 300?
[/quote]
Mk 1 GS 300 is every 60k or every 6 years, whichever is soonest. Not sure on Mk 2. A quick phone call to any Lexus dealer would be quickest way to find out if you don't have an owners manual.
[/quote]

I have just changed mine (that crank pulley was pig to undo) and it had done 95,000 miles. It was in perfect condition - could have gone a lot longer. The tensioner pulley was fine . Small amount of play but smooth running)
[/quote]

perfect condition after 95k miles?????????????// get yourself magnifieng glass and have aproper look between the teeth./////////////////////////////////////// 3yrs/40000miles cambelt change interval reccomended by toyota in japan for japanese customers.think about it........

90k or a little before wouldint hurt.
You might want to also replace the following:

Timing Belt Tensioner
Timing Belt Tensioner Pulley
Water Pump
Front Engine Seals
Serp Belt

Dont wait till its too late then you will be paying big time!!!

[quote name='dave1' timestamp='1279401443' post='726713']
[quote name='saji' date='16 July 2010 - 10:53 PM' timestamp='1279317196' post='726630']
Hi,
Would like to know when should I change a timing belt in a GS 300?
[/quote]
Mk 1 GS 300 is every 60k or every 6 years, whichever is soonest. Not sure on Mk 2. A quick phone call to any Lexus dealer would be quickest way to find out if you don't have an owners manual.
[/quote]

hello i just became the owner of a 300gs wit 126,00 and now needs a service A....this is cambelt and quite a major service as told by the service book and lexus....
for lexus to do the cam and all the followers comes to £500 but is a job that needs attention every 26,000 mls!!but i did ask the tech and he says another 5000 is poss! so its poss that your car wiil be ok and its poss it will break

[quote name='strummings300' timestamp='1324677778' post='769935']
hello i just became the owner of a 300gs wit 126,00 and now needs a service A....this is cambelt and quite a major service as told by the service book and lexus....
for lexus to do the cam and all the followers comes to £500 but is a job that needs attention every 26,000 mls!!but i did ask the tech and he says another 5000 is poss! so its poss that your car wiil be ok and its poss it will break
[/quote]

I don't know where you obtained the above information but it is, to put it bluntly, a load of tosh.

Are any special tools required to hold the cams in place when the belt is removed? When I changed a belt on a 1.6 Vauxhall engine a few years ago it was a simple case of aligning the markers on the 2 cam pulleys.

I presume the methodology of changing it on the GS300 engine is pretty much the same?

Is there a guide online somewhere?

Just been quoted £200 to change the belt and pulleys. Seems reasonable enough to me.

[quote name='Goochie' timestamp='1326207824' post='770841']
Just been quoted £200 to change the belt and pulleys. Seems reasonable enough to me.
[/quote]

If that is including the parts it's a bargain if not with labour rates it's still a good price.
My local mechanic misquoted me on my Lexus V8 cambelt job after Autodata stated 2 hours! 10 hours later the job was done, honoured the quote at £100.00 labour!

[quote name='steve2006' timestamp='1326208950' post='770848']
[quote name='Goochie' timestamp='1326207824' post='770841']
Just been quoted £200 to change the belt and pulleys. Seems reasonable enough to me.
[/quote]

If that is including the parts it's a bargain if not with labour rates it's still a good price.
My local mechanic misquoted me on my Lexus V8 cambelt job after Autodata stated 2 hours! 10 hours later the job was done, honoured the quote at £100.00 labour!
[/quote]

Lexus Coventry quoted around £360 for cambelt on my V8 GS430 which will need doing September. Apparently the GS430 is easier to do than Mk 1 GS300.