Marine Timing chain?

[cantaris]

I am rebuilding a chev 350. Do I need to replace the existing timing chain? If so can I buy a standard timing chain set from an auto parts store, or does it need to bea "marine set"?

 

[Don S]

Re: Marine Timing chain?

There is no such thing as a "Marine" timing chain.

 

[mthieme]

Re: Marine Timing chain?

If your chain is the link type, stand it on end on a flat surface. Can you press the middle of the top and touch the bottom? If yes, you need to replace it. Although if I had it apart and it was a link type, I would replace it anyway if the motor had any kinda age on it. How many hours on this puppy?
You do not need the "M" suffix.

 

[Bondo]

Re: Marine Timing chain?

Ayuh,...

It's a standard Chevy part...

 

[JustJason]

Re: Marine Timing chain?

it is a standard part..... that being said though. Most of them have nylon teeth on the gears, and not steel. If I were doing the job i'd personally opt for a set that has steel teeth. You may have to go aftermarket for that (as in not from GM)
Or if you don't mind a little noise.... and like the "whine" of a motor.... get a set of gears instead

 

[AZSenza]

Re: Marine Timing chain?

Gear drives are great UNLESS you have a fuelie motor (EFI) they have knock sensors for retarding the timing (in the event of detonation) and will hear the gear drive making noise, think its a knock and retard the timing

 

[Faztbullet]

Re: Marine Timing chain?

Marine engines(350) do not use the nylon tooth gears or every has to my knowledge. Mercruiser engines use a double roller, heavy-duty timing chain and they are the only type to pass GM's 300-hour "dock test." This test is where a boat is chained to a dock and engine ran for a straight 300 hours at wide open(55mins @ WOT 5min@idle) No single link chain has ever passed this test.
http://media.gm.com/division/powertrain/news/book1-overview.pdf