Re: DT 407

Posted by Redman on May 21, 2005 at 05:27:13 from (67.136.74.170):

In Reply to: DT 407 posted by Rune on May 20, 2005 at 14:43:38:

what we have found is the 407 uses a little more than the DT414 in most cases.
both are fairly durable but the 407 will almost always out last the 414.
make sure the 414 has a water filter and it should look as though it has been changed not too long ago.
we generally change the water filter every 200 hours and do a water sample every 100 and it stays in spec.
if they get out of spec the sleeves start to pit and once they start it is only a matter of time.
the only weak points i know of on the 407 are the fact that don't don't start good in cold weather and they are prone to break a push rod every now and then.
other than that i can't think of a thing,our 1456 has around 13,000 hours on it and aside from some head work it has never been tore down.
and it pulled at 4500 rpm for a couple of summers.

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