[Spridgets] 995 Huffaker race engine question

Mon Mar 30 12:48:43 MDT 2015

One thing you can do to check the back pressure is to remove the oil filler
cap and stretch a nitrile glove over the hole.  When you start the engine
you shouldn't see the glove blow up like a balloon.  If it does - too much
crank case pressure.

Cheers!!
Jim

On Mon, Mar 30, 2015 at 11:54 AM, lotuspilot at frontier.com <
lotuspilot at frontier.com> wrote:

> Rick and Jim,
>
> The Huffaker was/is a very tweaked (for its time) A-series 948 that was
> black crinkle painted and lots of chrome etc as well as 1/8 inch milled off
> of the block, Arias domed pistons etc.
>
> I did something that may have caused this and I will explain.  I purposely
> used a regular 948cc draught pipe in place of what the Huffaker was
> originally.  This engine has mucho original chrome goodies such as the
> tappet covers and the original tappet side cover had what was used on the
> later 1098cc Spridgets - the canister just like the front on the 1275cc
> engine but coming out of the tappet cover.  I wonder if that had anything
> to do with it.  I am going to put that on this evening and put oil back in
> the Exxon Valdez again - this time kitty litter under it and see what
> happens.  I may have to do the old trick of putting another crankcase vent
> in the fuel pump blocking plate.  I just dread having to pull the engine
> when it is so close.  Everyone keep your fingers crossed!
>
> Mike
>
>
>
>   On Monday, March 30, 2015 12:32 PM, bmwwxman . via Spridgets <
> spridgets at autox.team.net> wrote:
>
>
> Is the Huffaker built from the standard A series?  If so, there is no rear
> main seal.  Instead they have a "Scroll" seal on the outside of the rear
> main bearing.  There is a spiral groove on the rear of the crank shaft
> which is supposed to *draw* the oil back into the engine.  However, if you
> have too much crank case pressure the scroll seal can't overcome it and it
> will weep oil which then collects in the bottom of the bell housing and
> pours out onto your driveway.
>
> Before you pull the engine again, check your crank case pressure.  On my
> standard 1275 A series I had this problem....  I ended up drilling the side
> of the block and installing a pressure relief hose into a small K&N
> filter.  There are a couple of *fixes* for this including a kit that Mo$$
> offers to replace the rear scroll seal with a better seal but it ain't
> cheap.  Another method is a fix whereby you drill a channel into the scroll
> and the rear main bearing cap and tighten up the tolerance but if you screw
> that up you are out a rear main cap which is not replaceable because it is
> line bored.   Don't ask.
>
> Good luck with it.
>
> Cheers!!
> Jim
>
> On Mon, Mar 30, 2015 at 9:53 AM, lotuspilot--- via Spridgets <
> spridgets at autox.team.net> wrote:
>
> I was hoping it was just an internal pressure issue.  I may not be so
> lucky.  I guess that I can change that by pulling the engine and removing
> the flywheel.  I would love to try the straight cut gearbox somehow if
> possible.
>
> Any other ideas.
>
> Thanks a bunch,
>
> Mike
>
>
>
>   On Monday, March 30, 2015 10:23 AM, lotuspilot--- via Spridgets <
> spridgets at autox.team.net> wrote:
>
>
> Hi Guys and Gals,
>
> I just rebuilt a Huffaker race engine that had been stored away for
> decades.  I started it after the rebuild and all looked well after I
> discovered that I had the distributor drive gear in 180 out.  That took me
> a while to figure out until I replaced all of the plug wires 1 went to 4
> and 4 went to 1 and 3 to 2 and 2 to 3.
>
> Ok.  Here is my real question after running for about 20 minutes with
> varying engine speed, I noticed that about a quart and a half of oil
> decided it didn't wish to stay in the engine any longer and was being
> deposited on the driveway by way of the hole in the bottom of the
> transmission.  What happened here?  What should I check?
>
> By the way, the engine is running 11.5 :1 compression and all so high
> compression.  It sounded spectacular.  I am dying to drive it once I get
> you all to give me some idea of what may have happened.
>
> Thanks a bunch for all of your thoughts.
>
> Mike C
>
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> --
> Cheers!!
> Jim Johnson
> High Plains Youth Hockey <http://www.highplainsyouthhockey.org/>
> Dodge City Trail of Fame <http://www.dodgecitytrailoffame.org/>
> Electronic Journal of Severe Storms Meteorology <http://www.ejssm.org/>
>
> *"Tact is the ability to tell someone to go to hell in such a way that
> they look forward to the trip."*
>
> *Winston Churchill*
>
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-- 
Cheers!!
Jim Johnson
High Plains Youth Hockey <http://www.highplainsyouthhockey.org>
Dodge City Trail of Fame <http://www.DodgeCityTrailofFame.org>
Electronic Journal of Severe Storms Meteorology <http://www.EJSSM.org>

*"Tact is the ability to tell someone to go to hell in such a way that they
look forward to the trip."*

*Winston Churchill*
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