"tww1491" <twaugh5@cox.net> wrote in news:wGMDm.80$EU5.36@newsfe05.iad:

>
> "Tegger" <invalid@invalid.inv> wrote in message
> news:Xns9CAAC6B33E6A8tegger@208.90.168.18...
>> "tww1491" <twaugh5@cox.net> wrote in
>> news:zBrDm.517$OY2.109@newsfe22.iad:
>>
>>
>>>
>>> Is it a duplex or single row chain. That can affect life.
>>
>>
>>
>> It's a silent chain, not a single or duplex.
>
>
> Goes to prove I have not been keeping up with changes in automotive
> tech. Had to Google silent chain to find our what it is.



I did provide a Google link for that.



> Certainly,
> seems to be an improvement over what used to be.


It's a /considerable/ improvement. And combined with the new style of
tensioner system, means that chains are the wave of the future. And believe
it or not, chains are cheaper for automakers to produce.

The original problem with chains was the fact that they wore a lot over
time. Wear meant that they "stretched", which in turn retarded valve
timing, throwing emissions, mileage, and power off from what they should
have been.

Belts were better for all the above, but their downfall was the need for
relatively frequent replacement. Hence the current move back to chains, but
with new chain technology. Silent chains (AKA inverted-tooth chains) wear
at a fraction of the rate that the old beefed-up bicycle chains did.


--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/