Timing chain rattle? - Page 2 - MustangForums.com



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Old 01-09-2007, 12:21 AM   #11
fazm
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Default RE: Timing chain rattle?

and in case anyone is curious why there are 3, ill go into that too.

the 4.0 SOHC was originally a 4.0 OHV (pushrod) motor. So the middle shaft (now called balance shaft) was once the camshaft. so there has to be a chain that runs from the crank to the balance shaft (old camshaft place) so from there it is cheaper to just make chains running from the balance shaft to each camshaft. Otherwise they would have a problem with the angle of the chain coming from the crankshaft to the camshafts, making for either massive redesign, or adding more complicated tensioners, etc.

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Old 01-09-2007, 01:20 AM   #12
ilduce321
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Default RE: Timing chain rattle?

Quote:
ORIGINAL: fazm

and in case anyone is curious why there are 3, ill go into that too.

the 4.0 SOHC was originally a 4.0 OHV (pushrod) motor. So the middle shaft (now called balance shaft) was once the camshaft. so there has to be a chain that runs from the crank to the balance shaft (old camshaft place) so from there it is cheaper to just make chains running from the balance shaft to each camshaft. Otherwise they would have a problem with the angle of the chain coming from the crankshaft to the camshafts, making for either massive redesign, or adding more complicated tensioners, etc.

My brain hurts LOL
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Old 01-09-2007, 01:53 AM   #13
fazm
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Default RE: Timing chain rattle?

sorry man

basically.... easier to make 3 chains work, than 2 chains. keeps the costs down as well.
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Old 01-09-2007, 02:42 AM   #14
NickSezz
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Default RE: Timing chain rattle?

Oh I get it now haha...still find it funny...3 chicks are better then one...why not 3 chains?...lucky little engine
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Old 01-09-2007, 08:14 PM   #15
blackfoot
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Default RE: Timing chain rattle?

unfortunatly there are more moving parts, but the way i see it, this design allows it to be stronger. instead of 2 long chains that have further distances to travel and more pressure per distance, we have 3 smaller chains with less load per distance..


break a twig, once its soo small its harder to break
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Old 11-22-2012, 08:04 PM   #16
crazyassracer
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Thought I would raise this thread from the dead.

In the last week my Mustang has started exhibiting the classic symptoms of a loose timing chain tensioner. The car runs great, but rattles for a half second at startup, and then rattles between 2400 and 2700 rpm. I haven't read much about this problem in Mustangs, but the Explorer guys are all over it.
My car has 153,000 miles on it.
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2005, 2007, 40, 40l, chain, chains, mustag, mustanf, mustang, noise, rattle, tick, timing, timming, v6

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