More than that - I cannot say.
UPDATE - Stolen from http://www.abraxis.com/jays/hd_mounts.htm
February 99 - Well after lots more testing, I want to make some changes in my
original recommendations. 1st, I would go with the Devcon Flexane brand urethane
from Grainger I used the 94 shore
material, and it works perfectly. My 2nd note is that you should mix this stuff
*very* carefully. It has to be within 1% error to maintain it's consistency and
strength. The formula for Devcon that isn't included anywhere on the box is
69/31, that's 69 parts mix to 31 parts hardener, and that's by weight. The 3rd
thing is that you have to let these cure for a week at room temperature. Thanks
to another one of Bill's ideas, I used a toaster oven to cure the mounts
quicker. If you keep them at 200 degrees, they can be ready to install in a day.
From Roger S. Prior
Order them from from McMaster-Carr, http://www.mcmaster-carr.com
McMaster-Carr is a great source for all sorts of odd hardware. Plus
-they'll sell/ship over the phone to anyone with a credit card! They carry a
generic "Flexane equivalent" in two hardness's:
80 Shore A Durometer - 1lb resin/hardener - p/n 8644K11 ~$19
94 Shore A Durometer - 1lb resin/hardener - p/n 8644K18 ~$19
I ordered the 80 shore and it works excellent.. there is a bit of give, but
they are VERY solid.. I doubt I will have any problems with them at all. my
order came the day after I ordered it off the web, the bill came the day after
that.. I think I paid a total of like $22 total. then I made them
myself.
WARNING: When you get it you will
think they sent you a bad can.. The rubber mixture only comes less than 1/2 full
(by design) you will read about this
later on. I decided to start with my exhaust hangers as they are similar to the
motor mounts, and if I screw them up, I can buy some more cheap. So I
wrapped
them up real good, and mixed the mixture as best I could by volume. I held one
mount in one hand and then poured it in to the mount with my other. After it was
filled, I realized my first problem. The mount didn't have a flat side. So it
was filled with this liquid that needed to cure and I couldn't set it down. So I
propped it up with a cardboard box small enough to balance it and poured in the
other. Same problem and then the first fell off the cardboard spilling onto the
work surface and it was a nightmare.
Then I came out the next day and saw it was still soupy. Not hardened at all.
Basically, I screwed them up..So, I set everything aside and said screw it for a
week. I then re-read the instructions, and it says very clearly "measure
and mix BY WEIGHT (for your convenience,
the bottles have been sent to you pre-measured, if you need a large quantity,
pour the entire contents of the hardener into the base"
So, I taped and propped up the rest of my moter mounts so that they were
level and would hold the liquid... (do this while they are dry before you even
start mixing) Then poured the rest of the hardener into the can of base. I mixed
it up REAL good, then went mount to mount filling them all up. Then I forgot
about them thinking it would take 2 days to dry. (this was at about 11pm) when I
woke up the next morning (5:30) I went out to look at the mounts. They looked
like liquid still. I said to myself obscenities, then I touched one to see
how syrupy they were. It was as hard as a rock. The surface was just so smooth
it looked like liquid. I let it cure till I got off work, then I touched/tested
them. They were perfect. Solid with the slightest amount of give to allow some
vibration dampening So, I shaped them later with a grinder, and I still
have to re-fill the exhaust hangers, and one of the mounts where I didn't tape
well enough, but this product was fantastic.. I was VERY impressed with the
results.. I suggest it to anybody who hates that rubber band feel during hard
acceleration
My Tips for this project:
1. Mix well
2. Tape well
3. Make sure mounts are solidly placed on their side so that it will hold the
liquid..
4. Mix the entire hardener with the entire base do them all at once as not to
waste it.
5. Use a drop cloth
6. Have a stick handy to mix well
7. Don't get this stuff in the center bolt hole.. you will have to drill it out.
From Austin Tracy
Basically, I picked up some "Prothane" from Graingers
I think. When it arrived the next day, I taped one side of my motor mount
up with duct tape, make sure to tape it up well, or the mixture will pour
through the mount. I then mixed the two parts of the prothaine together
(mix the whole can, otherwise you may not get the correct mixture) , then pour
it into the motor mount surrounds. gave it a day to harden, then pulled
off the tape. I suggest letting it harden for at least two FULL days
before you use them, as the prothane may be hard to the touch on the first day,
but it gets EVEN harder the second.
Austin Tracy
