3.6L interference engine or not? - Chevy Malibu Forum: Chevrolet Malibu Forums
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post #1 of 15 (permalink) Old 04-09-2009, 09:09 AM Thread Starter
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3.6L interference engine or not?

Im curious if anyone knows if the 3.6l V6 has a timing chain or belt, and if it were to break, is it an interference or non-interference engine? Basically, if the chain (I assume) breaks, will it mess up the engine?
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post #2 of 15 (permalink) Old 04-09-2009, 11:15 AM
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Re: 3.6L interference engine or not?

I think all gm v engines are chain.
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post #3 of 15 (permalink) Old 04-09-2009, 12:00 PM
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Re: 3.6L interference engine or not?

Chain,lasts long time
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post #4 of 15 (permalink) Old 04-09-2009, 12:23 PM Thread Starter
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Re: 3.6L interference engine or not?

What about interference?
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post #5 of 15 (permalink) Old 04-09-2009, 12:24 PM
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Re: 3.6L interference engine or not?

I wanna say you will be fine if you pop the chain. (don't believe you will bend any valves)
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post #6 of 15 (permalink) Old 04-09-2009, 01:25 PM
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Re: 3.6L interference engine or not?

http://74.125.95.132/search?q=cache:...&ct=clnk&gl=us
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post #7 of 15 (permalink) Old 04-09-2009, 02:47 PM Thread Starter
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Re: 3.6L interference engine or not?



Thanks... a lot of cool info on the engine, but it does not call out if it is an interference or non-interference engine.
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post #8 of 15 (permalink) Old 04-09-2009, 06:29 PM
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Re: 3.6L interference engine or not?

I dont believe so. The only engine GM ever made that was like that was in the old Saturn L300s with the 3.0L and if I remember right it was a DOHC engine. I think those are the only ones that are possible to be interference engines.
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post #9 of 15 (permalink) Old 04-10-2009, 07:51 AM
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Re: 3.6L interference engine or not?

Quote:
Originally Posted by edmalibu83 View Post
I dont believe so. The only engine GM ever made that was like that was in the old Saturn L300s with the 3.0L and if I remember right it was a DOHC engine. I think those are the only ones that are possible to be interference engines.
fyi old saturn = not gm
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post #10 of 15 (permalink) Old 04-10-2009, 09:50 AM
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Re: 3.6L interference engine or not?

Quote:
Originally Posted by cavalier200 View Post
fyi old saturn = not gm
They were GM, and the 3.0L with a timing belt was used in more than just that car, but also the Saturn Vue, Cadillac Catera/Opel Omega (and a lot of other Euro-market GM vehicles), Cadillac CTS as a bored 3.2L variety for the first model year, etc.

Otherwise, all North American GM engines use a lifetime (essentially...I've known people to go hundreds of thousands of miles and never touch it) timing chain except for the--again, Euro sourced and unique--Saturn/Opel Astra with a timing belt 1.8L 4-cyl.

The timing chain is always something that often mystifies Honda, Toyota, Nissan, etc., etc. past owners who are used to their timing belt/water pump change at a certain mileage interval. A timing chain breaking, especially on a GM vehicle engine, is so far out of the ordinary, that it's rarely even thought of. It can happen, yes, but if anything and only after many, many, many miles would the chain even start to wear at all.


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