Notices
928 Forum
Sponsored by:
Sponsored by: 928 Specialists

CARLS SOLID ALLOY MOTOR MOUNTS

 
Old 12-02-2010, 01:34 PM
  #31  
9x8
User
 
9x8's Avatar
 
Join Date: Apr 2009
Location: The Evil Empire.
Posts: 497
Default

I considered those for my project car, but I'm still in doubt.
Basically, for the reasons that were already stated in this thread - eventually something will break due to excessive vibrations and that's not gonna be pretty.
9x8 is offline  
Old 12-02-2010, 01:45 PM
  #32  
mark kibort
Addict
Rennlist Member
 
mark kibort's Avatar
 
Join Date: Feb 2003
Location: saratoga, ca
Posts: 29,751
Default

Again, what is the overall goal. there are so many "solutions" just begging for a problem that doesnt exist.
mark kibort is offline  
Old 12-02-2010, 02:08 PM
  #33  
GregBBRD

Rennlist
Basic Site Sponsor

 
GregBBRD's Avatar
 
Join Date: Feb 2005
Location: Anaheim
Posts: 9,695
Default

Originally Posted by danglerb View Post
As I read it aluminum motor mounts put chassis stress on the driveline, hp isn't the main factor, its how much twisting and other forces act on the chassis which is being held rigid by the drive line. Potholes, speedbumps, and drive ways being more important than hp or torque.

Just my speculation, but seems like a track car with a full welded cage might have less issues than a street car.
Yes, you've got it....almost.

That cage needs to be extremely well engineered for this application and tie in both the front and rear mounting areas, however. If the cage stops just before the mounting area, the twisting loads will be more concentrated in a smaller area and make the problems worse. Think of "gentle bending" over a large area versus reducing that area and "kinking" things. Most cages will tie into the suspension pick-up points, but will not address the actual engine and transmission mounting areas. Most cages will make the problem worse, therefore.
__________________
greg brown




714 879 9072
[email protected]

If the kids keep breaking a crowbar in the sandbox, sometimes it is easier to just give them a stronger crowbar, instead of trying to figure out what they are doing in the sandbox.
GregBBRD is offline  
Old 12-02-2010, 02:13 PM
  #34  
GregBBRD

Rennlist
Basic Site Sponsor

 
GregBBRD's Avatar
 
Join Date: Feb 2005
Location: Anaheim
Posts: 9,695
Default

Originally Posted by mark kibort View Post
Again, what is the overall goal. there are so many "solutions" just begging for a problem that doesnt exist.
Snake oil.
__________________
greg brown




714 879 9072
[email protected]

If the kids keep breaking a crowbar in the sandbox, sometimes it is easier to just give them a stronger crowbar, instead of trying to figure out what they are doing in the sandbox.
GregBBRD is offline  
Old 12-02-2010, 02:19 PM
  #35  
Bill51sdr
Fleet of Foot
Rennlist Member
 
Bill51sdr's Avatar
 
Join Date: Aug 2003
Location: We are there!(San Diego)
Posts: 10,477
Default

Originally Posted by mark kibort View Post
Again, what is the overall goal. there are so many "solutions" just begging for a problem that doesnt exist.
People are looking for an engine mount that will not collapse. That's the OP's goal, at least. Yes, I know. The impossible dream.
Bill51sdr is offline  
Old 12-02-2010, 02:21 PM
  #36  
EspritS4s
Addict
Rennlist Member
 
EspritS4s's Avatar
 
Join Date: Jul 2002
Location: Massachusetts
Posts: 2,094
Default

What's the difference between collapsed mounts and solid aluminum mounts other than engine clearance? Is that what the OP is looking for, better engine clearance underneath?
EspritS4s is offline  
Old 12-02-2010, 02:25 PM
  #37  
GregBBRD

Rennlist
Basic Site Sponsor

 
GregBBRD's Avatar
 
Join Date: Feb 2005
Location: Anaheim
Posts: 9,695
Default

Here's the reality of all this:

There are people out there that will manufacture anything, if they think they can make a buck, from it. They don't care who they steal the idea from, they don't care what it does to your vehicle. You have to be the one to decide if you really need what they make, or not. You have to be smart enough to think the whole situation through and decide what the long term effects will be.

This just happens to be a good example. If there are successful race cars not using solid mounts....you probably don't need them for your street car....
__________________
greg brown




714 879 9072
[email protected]

If the kids keep breaking a crowbar in the sandbox, sometimes it is easier to just give them a stronger crowbar, instead of trying to figure out what they are doing in the sandbox.
GregBBRD is offline  
Old 12-02-2010, 02:57 PM
  #38  
GregBBRD

Rennlist
Basic Site Sponsor

 
GregBBRD's Avatar
 
Join Date: Feb 2005
Location: Anaheim
Posts: 9,695
Default

Originally Posted by EspritS4s View Post
What's the difference between collapsed mounts and solid aluminum mounts other than engine clearance? Is that what the OP is looking for, better engine clearance underneath?
Not sure what the OP is looking for.

The difference is that the collapsed mounts still have rubber and allow things to move/flex/twist. Solid mounts do not. They are metal bolted directly to metal. No flex.

So, yes, Kibort has the right idea. A set of dead, collapsed engine mounts would be better than a solid mount...and lower the center of gravity, some.
__________________
greg brown




714 879 9072
[email protected]

If the kids keep breaking a crowbar in the sandbox, sometimes it is easier to just give them a stronger crowbar, instead of trying to figure out what they are doing in the sandbox.
GregBBRD is offline  
Old 12-02-2010, 03:36 PM
  #39  
EspritS4s
Addict
Rennlist Member
 
EspritS4s's Avatar
 
Join Date: Jul 2002
Location: Massachusetts
Posts: 2,094
Default

That's what I meant. You might as well leave in the collapsed mounts.

Originally Posted by GregBBRD View Post
Not sure what the OP is looking for.

The difference is that the collapsed mounts still have rubber and allow things to move/flex/twist. Solid mounts do not. They are metal bolted directly to metal. No flex.

So, yes, Kibort has the right idea. A set of dead, collapsed engine mounts would be better than a solid mount...and lower the center of gravity, some.
EspritS4s is offline  
Old 12-02-2010, 03:46 PM
  #40  
928mac
Super User
 
928mac's Avatar
 
Join Date: Oct 2009
Location: Alberta, Canada
Posts: 2,637
Default

Originally Posted by ROG100 View Post
Brad,
We are talking about solid aluminium MM's not solid rubber.

Greg - say it like it really is - I agree.
Roger
And I agree with both of you Roger

I do not know why anyone would use a solid metal mount on either the engine or trans.
If they do, they are looking for trouble down the road.

FWIW.
That cutlass of mine that had the solid plate on the front of the engine (earlier post) the vibration of racing for one season spyder cracked the entire crossmember making the car no longer useable.
928mac is offline  
Old 12-02-2010, 04:45 PM
  #41  
123
User
 
Join Date: Nov 2006
Posts: 295
Default

Originally Posted by GregBBRD View Post
I'd guess that Dave Clem (the chassis builder) tried the stock mounts and determined that they would not hold up to the twisting torque of a 675hp four cylinder engine.
Maybe that's why Carl uses them for his race car? After all, his engine is making hundreds of horsepower more than Anderson's and Fan's.
123 is offline  
Old 12-02-2010, 05:40 PM
  #42  
jeff spahn
Addict
Rennlist Member
 
jeff spahn's Avatar
 
Join Date: Nov 2009
Location: Dubuque, IA
Posts: 7,459
Default

Originally Posted by GregBBRD View Post
Here's the reality of all this:

There are people out there that will manufacture anything, if they think they can make a buck, from it. They don't care who they steal the idea from, they don't care what it does to your vehicle. You have to be the one to decide if you really need what they make, or not. The general public is not smart enough to think the whole situation through and decide what the long term effects will be.

This just happens to be a good example. If there are successful race cars not using solid mounts....you probably don't need them for your street car....
There Greg, I fixed it for you.
jeff spahn is offline  
Old 12-02-2010, 05:48 PM
  #43  
GregBBRD

Rennlist
Basic Site Sponsor

 
GregBBRD's Avatar
 
Join Date: Feb 2005
Location: Anaheim
Posts: 9,695
Default

Originally Posted by 123 View Post
Maybe that's why Carl uses them for his race car? After all, his engine is making hundreds of horsepower more than Anderson's and Fan's.
Not sure it ran long enough to matter....
__________________
greg brown




714 879 9072
[email protected]

If the kids keep breaking a crowbar in the sandbox, sometimes it is easier to just give them a stronger crowbar, instead of trying to figure out what they are doing in the sandbox.
GregBBRD is offline  
Old 12-02-2010, 05:50 PM
  #44  
GregBBRD

Rennlist
Basic Site Sponsor

 
GregBBRD's Avatar
 
Join Date: Feb 2005
Location: Anaheim
Posts: 9,695
Default

Originally Posted by jeff spahn View Post
There Greg, I fixed it for you.
Much better. Thanks, Jeff.
__________________
greg brown




714 879 9072
[email protected]

If the kids keep breaking a crowbar in the sandbox, sometimes it is easier to just give them a stronger crowbar, instead of trying to figure out what they are doing in the sandbox.
GregBBRD is offline  
Old 12-03-2010, 01:06 AM
  #45  
RED SHARK 1990
User
Thread Starter
 
RED SHARK 1990's Avatar
 
Join Date: Dec 2006
Location: SAN DIEGO
Posts: 454
Default MOTOR MOUNTS

Was there someone on the forum wanted polyeurethane motor mount made? would that be better?
RED SHARK 1990 is offline  

Thread Tools
Search this Thread
Quick Reply: CARLS SOLID ALLOY MOTOR MOUNTS


Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: