[DeTomaso] Compression ratio estimate

Tue Aug 13 14:42:59 EDT 2013

No no no....
It goes through rapid disassembly due to super accelerated fuel burn and resultant gas expansion.

Sometimes I really hate PC.
The damn thing BLOWS UP!

Asa

Sent using Jedi mind tricks.

-----Original message-----
From: "michael at michaelshortt.com" <michaelsavga at gmail.com>
To: Ken Green <kenn_green at yahoo.com>
Cc: detomaso at poca.com, Jack Donahue <demongusta at me.com>
Sent: Tue, Aug 13, 2013 18:16:24 GMT+00:00
Subject: Re: [DeTomaso] Compression ratio estimate

Perhaps
...ever seen a top fuel motor with 1% too much nitro.
It freaking explodes.

Michael
On Aug 13, 2013 2:13 PM, "Ken Green" <kenn_green at yahoo.com> wrote:

> I know that the powder used in reloading ammo is not classified as an
> explosive, and I assume there is some technical definition based on burn
> rate.  When selecting a powder you may want a fast powder for a target
> load, or a slower powder to maximize energy.  The difference may be in
> micro (or nano) seconds, but there is a very real difference in theoutcome.
>
> Ken
>
>   *From:* Boyd Casey <boyd411 at gmail.com>
> *To:* Melanie Disco <michael at michaelshortt.com>
> *Cc:* Jack Donahue <demongusta at me.com>; "detomaso at poca.com" <
> detomaso at poca.com>
> *Sent:* Tuesday, August 13, 2013 9:40 AM
> *Subject:* Re: [DeTomaso] Compression ratio estimate
>
> No need to explode about it! LOL
>
>
> On Tue, Aug 13, 2013 at 8:40 AM, michael at michaelshortt.com <
> michaelsavga at gmail.com> wrote:
>
> > I don't think that this is worth a semantics discussion Larry, you know
> > what I meant.
> >
> > The official definition ( of 12 offered, this #1) is.
> > ex·plode  (k-spld)v. ex·plod·ed, ex·plod·ing, ex·plodesv.intr.
> >
> > 1. To release mechanical, chemical, or nuclear energy by the sudden
> > production of gases in a confined space:
> >
> > Whether ignited by a spark or by pressure (as in a diesel), the fuel
> indeed
> > explodes and that explosion is what drives the piston down. IMHO,"burn"
> > does not fully convey the mechanical reaction which occurs. Merely
> burning
> > fuel doesn't have the same word power or descriptive power of the
> > intensity, especially when put in the content of a Formula One engine
> which
> > at 18,000 revolutions per minute caused by 144,000 little explosions.
> > Perhaps in an Isetta, but in an 8,000 hp funny car, my Pantera and even
> my
> > weed wacker, I can hear these very rapid "explosions" which are caused by
> > fuel being burned in a sudden manner in a confined space = definition.
> >
> > Michael
> > On Aug 13, 2013 8:21 AM, "Larry - Ohio Time Corp" <
> larry at ohiotimecorp.com>
> > wrote:
> >
> > > <<lower octane fuel will explode more easily.>>
> > >
> > >
> > > I am not happy with the word Explode. There are no explosions in a
> motor.
> > > It
> > > is a very rapid burn. The same thing is true when you shoot a gun.
> There
> > is
> > > no explosion, but a very rapid burn.
> > >
> > >
> > > Larry (details) - Cleveland
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: detomaso-bounces at poca.com [mailto:detomaso-bounces at poca.com] On
> > > Behalf
> > > Of michael at michaelshortt.com
> > > Sent: Monday, August 12, 2013 11:19 PM
> > > To: Jack Donahue
> > > Cc: detomaso at poca.com
> > > Subject: Re: [DeTomaso] Compression ratio estimate
> > >
> > > The more squishy it gets, the higher the compression.
> > >
> > > This is the volume is 64 at the bottom and 8 at the top, the comp ratio
> > is
> > > 8:1
> > >
> > > But if the bottom volume is 120 and the top volume is 10, the comp
> ration
> > > is
> > > 12:1
> > >
> > > The reason that higher comp engines need prem fuel is that it is less
> > > volatile, meaning that it takes more to set it off, where, lower octane
> > > fuel
> > > will explode more easily.
> > >
> > > Dieseling is a byproduct of fuel being set off by pressure rather than
> by
> > > spark, so you want fuel that reacts more to spark and less to
> pressure, a
> > > diesel engine doesn't even use a spark, all the fuel is exploded by
> > > pressure
> > > after the first reaction that is helped alone by the glow plug to get
> it
> > > started.
> > >
> > >
> > > Michael
> > >
> > >
> > >
> > > On Mon, Aug 12, 2013 at 11:10 PM, michael at michaelshortt.com
> > > <michaelsavga at gmail.com> wrote:
> > > > It is the difference in volume of the cylinder space at the bottom of
> > > > the stroke and between the volume at the top of the stroke.
> > > >
> > > >
> > > > Michael Shortt
> > > >
> > > > On Mon, Aug 12, 2013 at 11:02 PM, Jack Donahue <demongusta at me.com>
> > > wrote:
> > > >> Could someone DEFINE "compression ratio"?
> > > >> On Aug 12, 2013, at 6:33 AM, Jeff Detrich wrote:
> > > >>
> > > >>>
> http://store.katechengines.com/whistler-compression-ratio-tester-p17
> > > >>> 4.aspx
> > > >>>
> > > >>> Maybe find a shop with one of these?
> > > >>>
> > > >>> Jeff
> > > >>> 6559
> > > >>>
> > > >>>
> > > >>> On Sun, Aug 11, 2013 at 10:02 PM, Boyd Casey <boyd411 at gmail.com>
> > > wrote:
> > > >>>
> > > >>>> Dear fellow Panteraians,
> > > >>>> I have a question for the more technically savvy . Is it possible
> > > >>>> to come up with an estimate of your pistons compression ratio by
> > > >>>> measuring the cylinder compression? As I have mentioned before I
> > > >>>> bought my car from the estate of a gear head who owned several
> auto
> > > >>>> parts stores and he spent allot of money on my Pantera when it was
> > > >>>> his. He was apparently a fan of Hall Pantera because allot of the
> > > >>>> Pantera goodies he bought appear to be Halls ( and there were lots
> > > >>>> of Hall literature and parts lists) The engine has roller rockers
> > > >>>> and Hall big bore headers and an in unidentified cam. Since I have
> > > >>>> not been inside the engine ( and don't want to until I need too) I
> > > >>>> am trying to find out as much as I can and if there are any
> > > >>>> forensic techniques for coming up with an educated guess as to the
> > > >>>> engine components I would appreciate hearing about them.
> > > >>>> Boyd
> > > >>>> _______________________________________________
> > > >>>>
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> > > >
> > > >
> > > > --
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Michael L. Shortt
> > > > Savannah, Georgia
> > > > www.michaelshortt.com
> > > > michael at michaelshortt.com
> > > > 912-232-9390
> > > >
> > > >
> > > > This email is protected by the Electronic Communications Privacy Act,
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> > >
> > >
> > >
> > > --
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Michael L. Shortt
> > > Savannah, Georgia
> > > www.michaelshortt.com
> > > michael at michaelshortt.com
> > > 912-232-9390
> > >
> > >
> > > This email is protected by the Electronic Communications Privacy Act,
> 18
> > > U.S.C. Sec. 2510-2521, is confidential and may be legally privileged.
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