Does the Mazda Speed 3 have a timing chain? - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 19 (permalink) Old 11-19-2007, 09:53 PM Thread Starter
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Does the Mazda Speed 3 have a timing chain?

A buddy of mine has an Audi and he tells me that they have to yank the entire engine at about 80-100,000 miles for a chain replacement and if you don't do it...the entire engine could implode...Do we have some sort of regiment that we need to follow for chain replacment??? ... if we have one??? or do we have the serpentene belt???
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post #2 of 19 (permalink) Old 11-19-2007, 09:55 PM
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Re: Does the Mazda Speed 3 have a timing chain?

I think we have a chain. Theres some kind of chain anyways inside the engine that you can see by opening your oil fill cap. Its just inside.

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post #3 of 19 (permalink) Old 11-19-2007, 09:56 PM
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Re: Does the Mazda Speed 3 have a timing chain?

yes we havwe a timing chain. BUt chains usually last more like 100,000-120,000 miles, not the 60,000 like belts!


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post #4 of 19 (permalink) Old 11-19-2007, 10:01 PM
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Re: Does the Mazda Speed 3 have a timing chain?

open the oil fill cap
look down
now ya know



not to hold you in suspense.... you will see chain

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post #5 of 19 (permalink) Old 11-19-2007, 10:16 PM
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Re: Does the Mazda Speed 3 have a timing chain?

Aren't pretty much all the mazda engines using chains? I think most Honda and Toyota engines use belts. The excuse they use is that the belts are "quieter" than chains, but I never thought the mazda3 engine was too "noisy" due to a chain. Just a built in excuse to get their accords and pilots into the dealer for "servicing" along with the 5th or 6th failed tranny replacement.
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post #6 of 19 (permalink) Old 11-19-2007, 10:31 PM
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Re: Does the Mazda Speed 3 have a timing chain?

[quote author=COOL 3 link=topic=95180.msg1865926#msg1865926 date=1195523586]
A buddy of mine has an Audi and he tells me that they have to yank the entire engine at about 80-100,000 miles for a chain replacement and if you don't do it...the entire engine could implode...Do we have some sort of regiment that we need to follow for chain replacment??? ... if we have one??? or do we have the serpentene belt???
[/quote]

I have a buddy who has a shop and he hates working on audi's. Says their layout and design are very mechanic unfriendly. I think most engines are interference engines so if the belt snaps then your valves and pistons will hit each other. Timing chains are suppose to be good for the life of the vehicle and there really is no schedule for maintenance or servicing. Some interesting reading off the web:

http://www.autoeducation.com/blog/item/2/
http://www.gates.com/brochure.cfm?br...chGatesPopular
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post #7 of 19 (permalink) Old 11-19-2007, 10:56 PM
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Re: Does the Mazda Speed 3 have a timing chain?



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post #8 of 19 (permalink) Old 11-19-2007, 11:02 PM
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Re: Does the Mazda Speed 3 have a timing chain?

The timing chain won't snap, but if the crank bolt backs out or loosens for any reason then you'll lose timing and break your valves anyways.

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post #9 of 19 (permalink) Old 11-20-2007, 01:58 AM
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Re: Does the Mazda Speed 3 have a timing chain?

Yes...my 2002 S4 had an interference engine, so the Audi guys would change their timing belt anywhere between 60k and 120k, depending on how brave you were. It didn't require yanking the engine out (this was needed for the turbo replacement(s), though....ick), but it does require taking the front bumper and basically the whole front end of your car off to access it. Audi engineers like cramming a whole bunch of stuff into a little space. Great cars....when they work. Expensive cars....when they don't.

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post #10 of 19 (permalink) Old 11-21-2007, 09:55 PM
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Re: Does the Mazda Speed 3 have a timing chain?

Timing chains don't typically need replacement unless you achieve massively high mileage. Most will be good for the life of the engine.

Timing belts are quieter, reduce friction, and don't stretch like chains, but they need replaced at regular intervals, typically around 100k anymore.

I think all current Mazda engines use timing chains. It used to be just the opposite and all their OHC engines used belts.

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