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RE: Hemi cylinder wall failure

To: <ARDUNDOUG@aol.com>, <land-speed@autox.team.net>
Subject: RE: Hemi cylinder wall failure
From: "Steve Pitt" <steve@seattleconstructioninc.com>
Date: Wed, 27 Oct 1999 12:29:15 -0700
ADK,
There can only be one Ardun Doug King?!  I just checked for the latest
updates on Don Ewald's Fuel Dragster site and saw the 1955 pic of the flat
head dragster taken by guess who, Ardun Doug King.  This has got to be you!?
(I'm a newcomer to this site)  Great photo of a cool early rail!!!!!
> -----Original Message-----
> From: owner-land-speed@autox.team.net
> [mailto:owner-land-speed@autox.team.net]On Behalf Of ARDUNDOUG@aol.com
> Sent: Wednesday, October 27, 1999 11:00 AM
> To: dfergus@bactc.com; land-speed@autox.team.net
> Subject: Re: Hemi cylinder wall failure
>
>
> Darrell,
>     I think the cylinder wall failure on the Ardun/Merc was the result of
> hydraulicking the thing a couple of times during engine starting.
>     When I finished the fuel system on the modified roadster I
> installed a
> "tip" valve in the fuel tank vent line to comply with SCTA rules.
> I didn't
> realize it at the time, but the "tip" valve really works well and
> won't allow
> ANYTHING out of the tank.
>     After filling the tank and home and driving over 4200' Tejon Pass the
> pressure in the tank was greater than the outside air pressure,
> causing the
> fuel to flow through the pump, barrel valve, and nozzles, into
> the cylinders.
>     The hydraulic situation cleared itself out at the Lakes after
> a couple of
> hits from the starter, but when we went to the World Finals over
> a couple of
> 7000' passes and through 80 deg weather the cylinders REALLY got filled.
>     I suspect that the cylinder was wounded from those 2 incidents and
> finally gave up on the 4th pass. I've run 12.6 pistons on 80% in
> the "wet"
> dragster engine for years with no cylinder problem.
>     I've had to change my operating procedure so as to leave the
> fuel valve
> in the "off-bypass" position at all times other than running the engine.
>     I may try to sleeve the block, but I probably will keep it as
> a "spare".
>                                             Ardun Doug King
>


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