Re: [FWDLK] 290HP FURY ENGINE AND "DOMED PISTONS'

[Gary Pavlovich <glpavlovich@xxxxxxx>]

Neil,

Did you get your distributor?

I did find mine after searching through a few boxes;
1956 Plymouth 277 V-8
Single points
Autolite #1688647
1B 4301A 2L599082

It comes with a NOS breaker plate assembly as well if you or anyone on the 
list is in need.

Gary Pavlovich
----- Original Message ----- 
From: "Eastern Sierra Adjustment Svc" <esierraadj@xxxxxxxxxxx>
To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
Sent: Thursday, November 18, 2010 3:22 PM
Subject: Re: [FWDLK] 290HP FURY ENGINE AND "DOMED PISTONS'


> Not to say that I told-you-so, because I didn't, here, but
> over on the FWDLK website a similar question arose about
> the D500 pistons -vs-Poly pistons, and how/why their compression
> ratios were different.
>
> I don't have the Good (Parts-)Book in front of me, now, but
> the D500 pistons are physically taller than the Poly pistons
> (which even, IIRC, are of negative-deck-height), which produced
> their lower compression ratio---despite the larger volume of
> the domed Hemi heads--which would tend to decrease an
> over-all  c.r. .
>
> The Hemi pistons even feature valve-reliefs in them; the Polys are
> not 'notched'.
>
> There are different P/N's for the Dodge Pistons, and, I'll bet different
> P/N's for the PLY's, too.
>
> BTW, it has been a common practice (deception) to install Hemi heads
> onto a Poly engine block.
>
> The Poly's compression ratio was 8.5:1; the D500's: 9.25:1 (even with its
> 'domed' combustion chamber, and, with its 'tall' pistons).....
>
> Installing the 'domed' Hemi heads onto the negative-deck-piston-topped
> Poly engine probably REDUCES the c.r. to something like 8.0:1 !!!
>
> Neil Vedder
>
>
>
>
> DOLORES ECKERSON wrote:
> > Hello Members
> >
> > After much time and searching I finally can CONCLUDE the 'domed piston' 
> > questions involving the 'higher compression' pistons supposedly in the 
> > 290Hp engines.
> >
> > I HAVE A TRUE ORIG FP31 MOPAR PISTON,,,along side a regular 318 9/1 
> > compression piston of about 1960 vintage.
> > ALL POLY 318s were 9/1 compression except for of course the 290HP engine 
> > (supposedly)
> >
> > I am able to use a common wrist pin to locate both pistons at the same 
> > point that they would be on the same connecting rod.
> >
> > GUESS WHAT--The FURY piston is higher by .010 to .015 (depending on how 
> > and where you measure it.)
> > SURE DOESNT SOUND LIKE MUCH DOES IT??
> >
> >
> > ANYWAY---A little math based on 9/1 compression for the stock piston and 
> > using a .012 average higher FURY piston YIELDS-------------------
> > 9.23/1 for the FURY PISTON!!!
> >
> > So the FURY piston WAS A SPECIAL PISTON,,,yielding approx 9.25/1
> >
> > ED ECKERSON
> > LI  NY
> >
> > *************************************************************
> >
> > To unsubscribe or set your subscription options, please go to
> > http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1
>
> *************************************************************
>
> To unsubscribe or set your subscription options, please go to
> http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1 

*************************************************************

To unsubscribe or set your subscription options, please go to
http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1