Re: Navarro six, block weirdness

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: Tom Jennings <tomj@xxxxxxx>
" 
" On Sat, 16 Jul 2005, Sandwich Maker wrote:
" 
" > " So none of the pistons I have are from this motor -- they're all
" > " 3.75" (well, they measure 3.735").
" > "
" > " Can forged pistons be reground? They have practically zero hours
" > " on them.  I've got nine stock diameter Venolia forged 199 pistons.
" >
" > i'd be tempted to keep these original and have new venolias [or ross
" > or whatever] made, to the small bore.
" 
" True. I want to get all this stuff sorted out, and then I'll
" contact the other buyer, after a Suitable Interval (eg. a week or
" two for "new toy" to wear off the purchases). I have some random
" race car parts (Dzus-fastened red fiberglas duct piece, an air
" scoop, these run pistons, etc) I want to trade him for parts he
" has with less Indy juju, like those conn rods and unused pistons,
" esp. if they are the right diameter.

<crossing fingers><sacrificing weed-whacker to gods of internal
combustion>

" I'm reasonably certain that this motor was a solid-lifter,
" tubular-rocker-arm motor. There is no machine work in the block to
" prevent lifters from rotating, etc. Whether that's what's in the
" Indy motor, I don't know. The lifters are clearly marked and the
" rocker ass'y wired together.
" 
" []
" 
" > if you do have a roller cam -- you'd have a fun time getting them in
" > there, but with custom tiebars you -could- run mopar rollers.
" 
" I thought there was some Ford app that fit with little mod in the
" six?

afaik there's no ford lifter close to amc diameter, but mopars are
identical - 0.904" iirc.  with the 'traditional' aftermkt style roller
lifters i know of, no block work would be required except maybe to get
them down in there.  they're prevented from turning by being linked in
pairs with tiebars, which of course have to be of a length
commensurate with lifter spacing.

one side of the lifter sticks way up above the bore, and has a button
for the tiebar end.  the tiebar has keyholes; you line the lifter pair
up end to end to slip the tiebar over the buttons, then turn them
parallel to drop into the lifter bores.  all very hard steel, and the
keyholes are slightly slotted to allow a little lateral action along
with lifter travel.

maneuvering the pair down into the six's lifter gallery could be quite
a challenge.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen

adh@xxxxxxxxxxxxxxxxx                       and think what none thought