The preferred lubricant for
suspension bushings is Teflon past. It is an opaque thick and VERY sticky.
Energy Suspension includes it with there suspension bushing kits. They call it
"Formula 5 Prelube". It will not push out or dissipate. You can order from
O'Reilly's Auto Parts, p/n 9.11108. 3 small snip and squeeze tubes for
$5+.
A side note, it is great
for hinge pins, auto, home, etc.
Thank you, Gary, the parts doc Escondido,
CA USA Land of the Avocado Mail:
garythepartsdoc@xxxxxxxxxxxx 760.751.1958
Could never find one (a grease) that stayed
there...it starts squeaking again; silicone probably best shot at grease;
suppliers tell you oh no we fixed all that. with graphite; not true .
Lots of BS.
Maybe stock MOOG rubber protected by silicone grease
is a thought.
I use silicone brake fluid , just like the military ,
for the exact same reasons.....long storage not operated. That will stir
up a hornet?s nest. I think MIL Spec knows more than opinions, and besides, I
agree. Rubber loves silicone, it does not love brake fluids, as old
wheel cylinders will show. And no rust pit in the bottom of all your wheel
cylinders , right at the piston seal lip, one of eight places is sure to
surprise you big time one day , with a single MC. You do not even know if one
formed since last year, or last 5 years. There are NO pedal feel problems with
pure unaerated silicone, but if you get ANY gas/air in it while pouring
you are looking at weeks to get it out.....if ever. Why the soft pedal
rep, I think. handling is crucial , cannot just pour in.
From: Edward Mills Antique Tractors
[mailto:millserAT@xxxxxxxxxxxxx] Sent: Tuesday, February 25, 2014
6:26 PM To: John Grady; 'Bob Jasinski'; 'Michael
Moore' Cc: '300' Subject: Re: [Chrysler300]
300G
Any thoughts about grease to prevent squeaks? I know we
used a light grease on sway bars on a race car but we had very stiff delrin
inserts in blocks if I remember correctly - its been 30+
years.
On 2/25/2014 4:46 PM, John Grady wrote:
Just a note, I believe poly is resistant to oil, more so
than rubber, rubber that just falls apart on non pristine engine;
this can matter ----a lot. A person with Chem E background may comment
more on that.
second , they squeak like crazy , including
?polygraphite?; which is a marketing recovery term. ; I used them in a
67 Cuda 273 convert suspension , liked the stiffness, but hated the squeak.
Used also for sway bar hangers where stiffness helps, but sounds like mice
under there. I believe they were removed for rubber due to noise.
I think they should be great for motor mounts and tranny
mounts . Ever look at an old K frame end , torsion bar rubber swivel
bushing? Usually takes a set off center ~ ½? . One clue, tire hits inner
fender when backing up on sharp angle turn. As alignment is, er, not there.
But I guess smooth ride....
Have used the Schumacher bonded A block mounts that sort
of rewrap in so they will not shear off at a bond. I liked those.
Imperial is a great source; period.
Ya take yer pix.....my .02
John Grady
PS Bob , be super extra careful to really take the
steering box bolts to frame to their rated torque on your A body, and use
high grade , best bolts . Ask me (and Jamie Hyde) how we know. Called
the Route 90 lane jump . Every time a truck drafts by you. Yet all steering
linkage new and tight. Jamie spotted whole box moving slightly after 4 th
time on a lift . Sounds crazy but true . These were front end
mechanics....And you do need those leaf spring wraps, or equivalent , or
springs will splay out. . A prior owner tossed them.
One more PS, those clear round dials on 67 cuda dash can
push in about .060 and mechanically hit gauge needles driving you crazy, the
gauge is not bad, it is putting the cover on! Glue clear part to backing
while apart!
Car is great now.....!
Mike et
al,
I am familiar with the
concerns about substituting polyurethane front end components in place of
OEM rubber originals and have heard and read of others finding the ride
objectionable after rebuilding a front end using aftermarket
polyurethane parts. In fact, that is the reason I went with original
OEM front end components in the A body Barracuda project I have in my
garage.
Having written that, I am at
a loss to see how that would translate to the same concerns regarding engine
mounts. As an example, about 10 years ago, John Hertog wrote a piece
for our 300 website tech section, (I think it is still there) about
repairing a failed engine mount, by making a "Franken mount", that is,
drilling through the broken rubber mount and securing it with a bolt,
through the steel into the failed rubber, and back out again thereby
allowing the original mount to be placed back into service.
I emailed him with questions
about the fix, and asked whether there was any noticeable vibration from the
engine transferred to the frame using the Franken mount, and he replied back
that he could not notice any difference. Based on this feedback, my thinking
was that since he did not notice any difference with his solid, bolted
mount, that a poly mount substituted for a rubber OEM mount would have
little to no affect.
Anyone on the list have the
poly mounts from Imperial Services installed on their car? Did you
notice any difference? Another question, if poly is a concern, does
anyone know of a service that revulcanates OEM mounts with rubber? As
a consultant for the Inc. Club I get calls from individuals dealing with
failed motor mounts, and have been referring them to Imp Services.
Recently, a high school friend of my daughter asked me for help finding
mounts for the '63 Imperial he inherited from his grandparents, and I sold
him my spare mount set to help him out as the repops are
pricey.
Bob J
From: Michael Moore [mailto:mmoore8425@xxxxxxx]
Sent: Wednesday, February 12, 2014 6:04 PM To: Bob
Jasinski Cc: 300 Subject: Re: [Chrysler300]
300G
I have restored several British sports cars. Polyurethane
bushings in all sorts of colors are sold by major parts suppliers, and
people love them because "they're stiff" and " they're tough". There is
nothing wrong with them. I just prefer not to use them for a subtle
reason.
1. Several years ago, Sports and Classic Car
Magazine (I think) had a cover story abut a comparison between two MGA's,
both of which were on the cover. The cars were identical even to the light
blue color. One car was totally original and very low mileage, around 30,000
miles as I recall. The other car was freshly restored using modern
materials and parts but still authentic. Two writers left in the two cars
for a weekend.They drove a day to the other part of the country,
overnighted, then swapped cars the next day for the trip back home. They
then compared the cars and wrote about it. They were unanimous that the
original car was superior in every way, especially handing and ride. The
fresh restoration was very stiff and harsh riding, and not as comfortable
for a long trip. It was attributed to several things but one major one was
polyurethane bushings and body isolators throughout.
I also had a friend who worked at a British sports car
factory and he once mentioned how much trouble the engineering
department went to determine exactly what hardness rubber to use in
various bushings, They would take it to the test track, record data, then
spend time removing softer bushings to install higher hardness bushings or
vice versa. A lot of engineering time was spent to get everything as
it should be.
Likewise, I personally designed some very large
industrial isolators many years ago. I started with something like 85 Shore
B hardness, tested, and went to 80 and tested. I eventually selected the
exact hardness needed for my application. I have never seen any hardness
specification on any isolators and would not expect anyone to ask or
answer-like I said, its subtle!
Finally, I restored a 63 E Type a number of years ago. It
used OEM or NOS parts wherever possible and no polyurethane in any of the
bushings or isolators. It drove like a dream. Then, my son asked me to
restore one for him, which I did-but he wanted all the boy racer stuff.
Competition shocks, nice red poly bushings , etc. So for a year, I
could drive either car as I finished up his car.
I would not have realized how horrible his car was had I
not been able to drive my car also. It was a different car-but it was very
stiff, and he loves it!
That's my opinion, and there is nothing wrong with poly
bushings. They are tough.
Michael,
That's bad news. I
just let a spare pair of originals go because I thought I could always get
new ones. I wonder how wide spread the problem is, polyurethane is
very popular for front end parts. Any others on the list having a bad
experience with the repro's? What does Imperial Services have to
say? Warranty?
Bob J
From: Michael Moore [mailto:mmoore8425@xxxxxxx]
Sent: Wednesday, February 12, 2014 4:25 PM To: Bob
Jasinski Cc: 300 Subject: Re: [Chrysler300]
300G
Bob,
Thanks I prefer not to use polyurethane, I have a used
floating power poly mount now which is separating, I'd like to find an NOS
rubber mount, or a good used one if possible.
Michael,
Have you tried this
vendor?
http://imperialservices.net/imps.html
Bob J
Jeff responded to my email today and has been terrific
help.
I need a NOS 220237 left side engine mount though and he
doesn't have them.
Mike Moore
Jeff Carter has more parts than you
can imagine. Contact him at JC Auto Restoration in Seattle. Google for
website and phone number. Great guy; good to work with. He restores our
letter cars to perfection but has warehouses full of
parts.
I'm new to the group and the
300 club. I have two 300k's as well as a 300G that I'm trying to bring
up to par. Currently I'm trying to hunt down a pair of inner fender
inspection plates for the 300G. Any info on their potential
acquisition would be appreciated.
__._,_.___
To send a message to this group, send an email to:
Chrysler300@xxxxxxxxxxxxxxx
To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or
go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button
For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
__,_._,___
|