Danger! Motor mount failure

[ruckdr]

I just had installed Polyurethane Motor Mounts, and a Polyurethane Transmission mount.
The difference in feel is incredible:
Maybe feel a little more vibration at idle, it is NOT obtrusive or
objectionable, and may be a sensation that you know something is a little
different, and will be just normal after a few outings. At speed, there is NO difference in feel except as described below.
I was in 5th gear, at 60 - 70 mph, (rpm very low, about 1800-1900),
and stepped on it, and the car just jumps forward, same in the other
gears, at initial throttle hit, the car just pushed you in the back; not
sloppy and no hesitation. It’s like the energy is completely transferred forward.
Needles to say, a real PLUS.
These Excellent Motor Mounts are from Polybushings.com at the very reasonable price of $98.00 per pair. Johnny is great to work with and can be reached on (503) 869-6156 , or [email protected]
Web site:
http://polybushings.com/pages/2469.html

The Poly Transmission Mount I got from Summit Racing; this mount has been discussed on the forum before: Part No. ENS-3-1108G Price $20.95
http://store.summitracing.com/partdetail.asp?autofilter=1&part=ENS%2D3%2D1108G&N=700+300537+115&autoview=sku

Later,

 

[2001 GTS]

^Thats pretty intersting...$98 compared to 3x as much

Viper tax I guess

 

[Bolt]

Ok, Due to this posting I ordered motor mounts and a transmission mount. I have 23,000 miles on my 98 GTS. Although my motor mounts where not broke they where ready to break and they would have not passed Pa state inspection. Thank you for bringing this to my attention. This avoided future problems.

Read this!

Now, If you have a Paxton super charger on your Viper. Take you car to someone and let them do the motor mount change for you. I did mine and it was a PITA! It was suppose to be a 2 hour job. Try 7 hour job. I have a lift and when lifting the engine the headers hit the frame. Plus worse the Paxton frame cross member needs to be removed to do the right side or the idler pulley will hit that cross member. For the left side you need to totally remove the bracket which holds the cross member. Once the new motor mounts are in place the left cross member bracket needs clearance ground into it or it will hit the super charger bracket. Believe me this was not fun. I do all the work on my own car and I was not enjoying this at all.

This is my tip to you.

Bolt

 

[mjorgensen Woodhouse]

I feel the need to post this in response to the thought that all mounts are created the same. You are not getting the samething from this source as you are getting from Woodhouse Performance or Woodhouse Viper. No need for the "Viper Tax" comment as to the cost, you are getting what you pay for with both of these options so please read the following for an explaination.

Thank you for your time,

Mark Jorgensen
Woodhouse Viper

Hello to our Viper Nation friends. The recent thread posted here on polyurethane engine mounts contains information that could mis-lead.

So this note is to provide you the total skinny on Viper motor mounts and choices you have.

History first: Viper mounts are nearly the same from 1992 through current 2006.
Stock mounts are made of rubber, they are resilient (soft to dampen engine vibs) causing a lot of engine and transmission movement and they get looser with age. They are a contributing factor to missed shifts since the driver is chasing a moving target.
For you die-hard road course dudes, engine movement induces secondary motion that reduces shock damping control in the chassis, a reason race cars use high durometer mounts.
Stock Viper engine mounts have an above normal failure rate. You usually notice the engine hitting other hard things in the chassis under torque load when this occurs.
Now most of you are wondering, who the heck is this guy and what gives him the right to tell us about mounts? Woodhouse Performance and our affiliate, Woodhouse Dodge has contributed 11 years of racing development to the Dodge Viper.
We initiated the need for this mount with Mr. Ruckdo’s source Energy Suspension. For various reasons, we chose not to move forward with them as our supplier.
The mount we provide has several significant differences, the most important perhaps, it is not your cheapest in price, but it will be your cheapest in the long haul.
Let me explain.
We have been prototyping and testing mounts for over two years now. The present units we sell have been used for over one year in four Dodge Viper race cars that participate in the Pro SCCA SPEED World Challenge Series.
The first ones were fabricated by hand in our shop.

Why such a long development time?
If you simply make a harder/stronger motor mount you can introduce new frequencies and resonances. Maybe you have heard of this, where it causes cracking of the metal lines that supply power steering, cooling fans, brake lines, etc. Most of you know of the other driveability and noise issues.

Dodge Motorsports tested our production mount in their Viper Competition Coupe mule for 22 hours with nothing but praise. This mount cannot tear apart or separate for any reason due to a proprietary inner core that absolutely will not fail as does the stock mount.

Kinda sounds like an ad here doesn’t it? If you like doing something well, doing it once, and forgetting about it, then spending a few bucks more on the best is where its at. I think Viper owners are like that. The best; could be why they own a Viper.

If you have questions or want a set, go to Nancy at www.woodhouseperformance.com or to Mark at www.woodhouseviper.com

P.S. Yes we recommend buying all three mounts, the rear mount we sell you is the stock unit from the Viper Comp coupe. Yes, you get the real McCoy for around ten bucks more than the plastic one from Summit.
Bob Woodhouse

402 426 4127 w 402 657 5613 m
[email protected]
PO Box 546 2171 S. Hwy 30
Blair, Nebraska 68008
www.woodhouseviper.com

 

[V10 ACR]

Mike and Bob,
Thanks for stating your case. I have been extreamly pleased with the mounts. They were installed in March a few weeks before track time at Buttonwillow and I have been the to drag strip 3 times as well (30 passes). The difference is really remarkable. What you don't say, that should be added is that Woodhouse has a long history of support for the Viper community. The outstanding R&D that went into this part aside, the Viper community owes it to support the best vendors. While I bought my first viper from a local dealer, my 2005 Copperhead was bought through Woodhouse. Great people, great support and you really do get what you pay for.

V10 ACR in San Diego

 

[mjorgensen Woodhouse]

Thank you,

And thanks to all of our supporters in the Viper family. We will always strive to exceed your expectations when you call or buy from us and we are here because we love to be apart of this wonderful group of owners.

Mark Jorgensen
Woodhouse Viper