[Supras] moving oil pickup

[berniek at technicaldevelop.com]

A dry sump invovles use of a scavenging pump, and oil tank with a chamber
large enough to allow oil-air separation.  I know because the original
1970 Honda four cylinder bike I have (bought new) has one.

I don't see the complexity in lengthening the pickup tube in its
horizontal section, and connecting the bracket to a steel tab under one of
the main cap bolts.  Cutting a pickup hole further back in the pan baffle
is an easy matter.  What am I overlooking here regarding complexity?  I've
had instances with rear sump GM cars where oil climbed the side of the
sump, evidenced by noisy hydraulic valve lifters.  This time I'm
addressing straigth line acceleration with the 7M, but there will be no
audible warning of inipient starvation as with hydraulic lifters.

BernieK


> May I ask a one question: Are you afraid of a dry sump? It just seems the
> amount of work you are doing is ridiculous...for something the physics say
> only *might* happen.
>
> Keith DiSarno
> Quality Co-op (Elyria)
>
>
> -----Original Message-----
> From: supras-bounces at supras.com [mailto:supras-bounces at supras.com] On
> Behalf
> Of Jim Jobe
> Sent: Tuesday, June 12, 2007 8:40 AM
> To: berniek at technicaldevelop.com
> Cc: Supras at supras.com
> Subject: Re: [Supras] moving oil pickup
>
>
>
> I've never seen oil pressure drop on any of my 5-600+ rwhp pulls, however,
> instead of fixing one direction why not fix all directions. IE make the
> sump
> bigger, increasing oil volume at the same time, and bury the oil pickup in
> it.  You do turn and brake right?  :-)
>
> On Tue, Jun 12, 2007 at 02:20:03AM -0400, berniek at technicaldevelop.com
> wrote:
>> First. let me state that I do not want to incite a flame war.  There
>> are some very well respected participants in this group who maintain
>> that position of the 7M stock pickup is adequate under strong
>> acceleration.  However, from measurements taken and from simple
>> physics and trigonometry I do not agree that the stock location is
>> best from a standpoint of at least transiient oil starvation under
>> hard acelleration  Again will all due respect, it appears to me that a
>> further rearward oil pickup location would be better under hard
>> acceleration.
>>
>> That having been said, iit would appear to be a straightforward matter
>> to cut the pickup pipe and weld or braze in a section to lengthen it
>> by about 3 inches to get it further to the rear of the pan.  The
>> existing pickup support could be tied to a piece of 3/16" steel sheet
>> stock retained under the right 6th main bearing bolt, in the same
>> manner as now supported to the block.  Of courxe, a new pickup hole
>> would need to be cut in the oil pan baffle to accomodate the rearward
>> relocatiion of the pickup.
>>
>> Just curious if anyone has any comments.
>>
>>         BernieK _______________________________________________
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