Re: [ihc] "stuck valves"

["Ryan Moore" <baradium@xxxxxxxxxxx>]

----- Original Message ----- 
From: "Tom Mandera" <tsm1@domain.elided>
To: "Ryan Moore" <baradium@domain.elided>
Cc: "ihc-digest" <ihc@domain.elided>
Sent: Tuesday, March 16, 2004 10:34
Subject: Re: [ihc] "stuck valves"


> Is it 10 minutes of idling, or 10 minutes on the highway?
>
> My bet is it's none of the problems he thinks it is.. it's probably shot
> cam bearings and/or plugged oil returns.. when cold, there's oil in the
> pan and enough oil to pump up the lifters.. after a few minutes of
> flogging, the oil is either all in the heads, or it's thinned enough
> that there's not enough pressure (thanks to the poor tolerances on the
> cam bearings) to pump up the lifters.
>
> This results in the valves not opening like they should, which makes a
> miss, and which "self governs" the engine.
>
> I have a 304 and a 345 that are both like this.  I pulled 14,000lbs with
> the 345 all the way to Colorado and back with no problems.  The 304 took
> me to work today.
>
> With the gearing on these rigs, the 345 T'ette wouldn't do more than
> ~65mph, and the Scout is stuck around 55mph from the poor top end oiling.
>

10 minutes of idling apparently.  It'll not really be running on the left
bank at all when he has it sitting there idling.  Said he can feel the
exhaust and feel a huge difference there too.

From what he says, the engine runs perfect cold.  No miss, no clatter,
nothing.

-Ryan


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