Bowtie70SS

iTrader: (10)

Sometimes ideas just come to you. Some are good and some are bad so I will bounce this one off the CTS-V community here. At work we use a compound to plug telephone cables which is basically a A/B urethane compound that hardens to for a air dam within the cable. Here is my idea; I looked on McMaster-Carr and I can order Shore 85A urethane casting compound for $33.33 for 25 cubic inches. What if I were to drop my cradle and build temporary forms around the cradle mount bushings and fill them with urethane? I cannot imagine why this wouldn't work. I don't want to hate on any products but $2-300 for spacers is a bit high. I am going to order some and give it a shot. I bet a piece of large exhaust tubing and some duct tape would make a nice form.

isis

iTrader: (1)

We used to do that to the transmission mount in Subarus instead of the revshift insert. We used windshield adhesive. I'm not sure if the urethane would bond to the rubber or not. It's worth a try if you've got spare time. Take pics.

FuzzyLog1c

iTrader: (4)

Bad idea.

http://www.cadillacforums.com/forums...ml#post3130990

http://www.cadillacforums.com/forums...ml#post3136351

http://www.cadillacforums.com/forums...ml#post3136464

I8URSVT

iTrader: (2)

that was a good read fuzzy, thanks for posting that

Bowtie70SS

iTrader: (10)

Everything I saw was about engine mounts. I do not plan to remove the original rear bushings but rather fill in the void in the original rear cradle mount bushings. I do not plan on producing motor mounts. I could choose from 60A 75A 80A or 94A. I have a second rear cradle so if I do it and eff mine up I won't have to buy new bushings just throw the other one in. Once I do it, I will take pics.

FuzzyLog1c

iTrader: (4)

The point is that this hack job is going to fail due to weather and stress due to the material properties of the stuff you indicating you were planning on using.

Bowtie70SS

iTrader: (10)

Uh ok what would that urethane be used for then? I can handle if it isnt a good idea but I don't like the idea of being *** raped for a $10 bushing that they charge $300 for because they can. It's not like I said I wanted to use window urethane, I was thinking this was 2 part. Oh well if it doesn't work I am out $50. I have to look into where to buy some urethane "bar stock" that I can turn down in the lathe I guess. I have lots of projects going on right now so it isnt top priority. I am dying to get this LS1 swapped 57 I have been working on running. I ended up springing for a Dakota dash for it.

FuzzyLog1c

iTrader: (4)

It's $160, not $300, and if you had bought it earlier, you would've gotten 20% off. You may save $110 right off the bat, but it's going to take you a lot more time to apply your solution, and it'll be more expensive in the long run because you'll have to keep doing it.

Bowtie70SS

iTrader: (10)

I was referring to the delrin cradle bushings http://www.ebay.com/itm/2004-2005-CT...1245c0&vxp=mtr

They basically do what I am talking about. The other ones are basically urethane washers. Thanks

FuzzyLog1c

iTrader: (4)

THOSE are basically expensive Delrin washers. The Revshift subframe mounts completely replace the stock mounts.

swiss

iTrader: (3)

People have been filling the voids in rubber mounts with window weld and similar products for ages.

serik21

Why waste your time when you can just do the revahift bushings?
I have some aluminum cnc bushings that will work that I had made.

FuzzyLog1c

iTrader: (4)

And for ages, it's been sucking. It's too soft (55-60A) and it's not durable enough. It's got a narrow temperature range and insufficient resistance to moisture.

If window weld shears during a turn and you lose control of the car, that $110 you "saved" is going to look pretty stupid next to your totaled CTS-V and medical bills.

http://multimedia.3m.com/mws/mediawe...SevTSeSSSSSS--

http://multimedia.3m.com/mws/mediawe...SevTSeSSSSSS--

lilgcts-v

theres the cheap way the expensive way and the right way boys, Revshift helped us with that dilemma

Onefast V

iTrader: (3)

Temperature range is beyond adequate for cradle bushings... -20f-120f. And I'm sure you can get urethane of higher durometer than 60a, 94A or even higher through mcmaster Carr.

Bowtie70SS

iTrader: (10)

There is always a can of worms to be opened. Ok well since no one has said they tried this and it worked or didn't I guess I will leave it for now. I am sure with my table o' mods I will be doing the 8.8 swap soon enough.

FuzzyLog1c

iTrader: (4)

The +20°F to +120°F temperature range only defines the conditions necessary for bonding, but 3M doesn't specify a lifetime under those conditions. Based on internet research, it appears that the average lifetime of a window weld (across all automotive applications) is 18 months.

3M's documentation doesn't identify any higher durometer options.

Onefast V

iTrader: (3)

http://www.mcmaster.com/#liquid-urethane/=kr41e4 right on the page. Probably not 3m window weld.

FuzzyLog1c

iTrader: (4)

Interesting. Better temperature rating than 3M window weld, too. I wonder if "window weld" has become a genericized trademark like Kleenex or Sawzall.

Still wouldn't trust it without knowing its compressive and tensile strength.

Bowtie70SS

iTrader: (10)

That's the stuff I was talking about, I never meant window weld someone else mentioned that.