FuzzyLog1c

iTrader: (4)

The next UMI sale is due in July.

dudesweet

iTrader: (3)

That's what I heard...July 4th weekend. Hmmmm.

RADEoN

iTrader: (12)

the UMI's vibrate like a mother ******. almost unbearable in a cammed car.

ColeGraham

iTrader: (8)

Small price to pay, IMO, to have the peace of mind that the wont fail like Poly MMs will at some point.

FuzzyLog1c

iTrader: (4)

I'd love to try a couple of these mounts with and without a harmonic balancer. Budget won't support buying a whole crapload of mounts, though.

raven154

iTrader: (14)

My car is cammed and I have no issues. Sounds like there are other issues that come in to play and the stock mounts do a good job at masking them.

RADEoN

iTrader: (12)

When my idle is low, the car feels like it's gonna rattle apart, when I'm smooth 1111+ rpm, it's not bad, but tolerable. Regardless, when you have a practically solid mount, you're going to get increased vibration over a fluid filled bag.

ColeGraham

iTrader: (8)

Thats why Cadillac went with the OEM mounts they did, to keep the car more "Cadillac".

The simple fact is a Poly mount will fail LONG before a solid mount will. But if you car is tuned properly, even with a massive cam, it will be a whole lot better as far as vibrations goes. There are a lot of guys with LSx cars that go solid mounts, and say the increased vibration is there but not that bad. It will all really come down to the tune of the car and how well things are put together.

DrSpeed

iTrader: (4)

Went from broken OEM mounts to the UMI's. Also added long tube headers and LS7 clutch at the same time.

The UMI mounts shake the car pretty good when it dips below 800 RPM, which will happen at idle on occasion, at the light. I like to let out clutch all the way before getting on the throttle, but I can't do that any more because it shakes the car, including the dash and the ceiling panels.

It's definitely not a Caddy any more...

atdeneve

If you already had the RC51 mounts, what made you go and buy a set of UMI mounts?

lollygagger8

iTrader: (7)

I got the blue softer street ones. The red ones are their harder ones for track. I'm going to shoot for install/writeup next weekend.

I think my 2nd pair of UUC's (yellow) are toast. I can't freakin believe how shitty they make products!!! Alot of the Bimmer guys go from UUC over to Revshift for that very reason.

DougNuts

iTrader: (1)

If I do it again, I'll put a set of stock mounts back in there.

lollygagger8

iTrader: (7)

You mean WHEN you do it again

catch2otwo

Is there any benefit to this design compared to the UMI type? I thought I read somewhere the CS mounts which are the same design had some issues. Cant remember what they are though.

dudesweet

iTrader: (3)

I think I remember reading Revshift post something about the quality of poly being significantly superior in their product. The price difference wouldn't necessarily reflect that as they're less expensive than the other options.

UMI Performance

iTrader: (77)

Our mount design is completely different than the CS and Rev mounts, ours is similar to the RC51 mount that was available in the past.

We have had many customers report the mount styles like the CS and others tearing over time. This is why we feel ours will hold up much better. And if a bushing would go bad in ours they can be replaced for $2.50 each... so for $10.00 you can rebuild our mounts if needed. On the others once they crack they are no good.

Thanks for the support,
Ryan

dudesweet

iTrader: (3)

Thanks for your post, Ryan. I definitely like that option for replacement.

*cough*SALE!*cough*

DougNuts

iTrader: (1)

Maybe, it doesn't have stock mounts in it now. I don't want to derail the discussion, but I've been fighting the typical 2100-2350rpm vibration and the only thing left to try is to go back to stock motor mounts (which were destroyed when I took them out).

Gabbiani

iTrader: (20)

If you have a vibration any of the poly will make it worse. I think mine is my dual mass flywheel now. The vibration was there before my mounts.

Mine is bad 800-900rpms. So I idle just over 900 right now with cam. I have zero issues above that. Mounts don't cause vibrations, they may make them more noticeable. Shutting my car off is embarrassing right now.

I went UMI for all the reasons the sponsor said above. I had a stock one rip on the dyno and I watched the engine try to jump out of the bay. Any of the styles with bolts sticking out of poly can do this.

heavymetals

iTrader: (3)

When I first saw the PFADT mounts for the C5 Vette, I wondered when someone was going to make a similar set for the V.