http://www.ludespeed.com/produ....html

it is a DIY solid mount instruction page. bassically you seal off one side of your mount with paper and glue, then pour in poly resin and fill up the gaps.

seems like it would work, I am not happy with the inserts, they don't fit as tight as I would like them to, and am thinking of trying this, with a sold compound, the part# he lists is rated at aprox 4,500 psi tensile strenth (80A) I am looking at 10,000 psi compound (90D) for extra stiffness since it is a track only car

so.... has anyone ever done this?? did it work well?? opinions??

 

If you just filled up the gaps, it would still have rubber in there that could move around. I guess the way to make em solid is to make sure the poly resin goes a little around the outside as well so the part that the bolt goes through and the metal case of the mount itself is solid as one.

 

yea, thats what I was worried about... there will still be ruber in there,

I would like to just cut out pieces of steel to act as end caps, and just weld them all up, but the rubber is going to burn, plus my welder just died

I figured this would at least help a little, I am going to be running a stock motor for a while, at least the next year or too, will only be like 350whp at best, eventually I will build a race motor, and need something serious, but the fill er up method should work for now right??

 

I used some stuff from a company called Devcon or something like that. BAsically all i did was use aluminum tape and sealed the bottom of the mount off and then poured it in. It looks great and it hard as a rock. It takes 8 days to completly harden so plan on having your car down a while.

 

I plan on doing the Bootleg Poly mounts tonight on my Mitsu... i will keep ya posted on how well it works... i want to go solid too... but ill try this first....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civic disobedience &raquo;</TD></TR><TR><TD CLASS="quote">I would like to just cut out pieces of steel to act as end caps, and just weld them all up, but the rubber is going to burn, plus my welder just died

</TD></TR></TABLE> That's a damn good idea!! I tried filling one of my mounts with some stuff but all it did was eat the hell out of the rubber. Needless to say the mount was garbage. Where do you guys find the stuff that hardens real well?? I have also heard that 3M window weld is the way to go but can't seem to find that anywhere either.

-Ryan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kwuaymaikrup &raquo;</TD></TR><TR><TD CLASS="quote"> That's a damn good idea!! I tried filling one of my mounts with some stuff but all it did was eat the hell out of the rubber. Needless to say the mount was garbage. Where do you guys find the stuff that hardens real well?? I have also heard that 3M window weld is the way to go but can't seem to find that anywhere either.

-Ryan</TD></TR></TABLE>

McMaster-Carr sells the stuff, there are several different types

part# 8644K11 (80A compound 4500 psi tensile strenth 1lb can) $23.64

part# 8690K1 (90D compound 10,000 psi tensile strenth 5lb can) $50.42

for a street car you may want to use the 80A to keep vibrations down... plus it's less $$$, but it's only a 1lb can. The 90D is a 5lb can, better value, but problably more than you will need for one car (or not... I have not done this yet)

the phone number for McMaster is (732) 329-3200 or http://www.mcmaster.com

prices tend to vary, so it may be a little more or a little less. the prices I listed are from the most recent catalog so it should be pretty close

post up results

 

I just spoke with the people at McMaster-Carr.... they said... that 90D is WAYYYYY to hard... and will probally shatter.... They are only about 10 min from my house and i am going to be picking up some 94A tmorrow morning... i was going to use 80a which is basically the same as the ones you would buy in stores like energy.... but 94 will be alittle firmer.....

The 90Dis used for more lik Hard Hats...

 

Thanks guys!!

 

on me!! the 80A 1725 psi

I was looking at the 88A wich is 4,555

I don't see 94A in the catalog I have... do you know what the tensile strenth is??


found it... it is 3,120 PSI

 

This is the article I wrote for my site on this mod.


In my opinion, 80A is perfect as there is NO engine movement and it's not harsh at all, also. The solid mounts help the overall sound of the engine inside and outside of the car, it sounds like a real race car.

 

You can also use this Napa stuff called window weld. that stuff is great.

 

I personally wouldn't recommend window weld because it's not as consistent in it's densities when it solidifies.