Interest in solid motor mounts?

DSMu4ia · 03-06-2005, 01:52 PM

A friend of mine has been turning out some very nice, solid motor mounts for the Colt guys, and wants to expand.

He can offer solid mounts for 1g/2g/Colt, but wants to get a feel for interest before going gun ho on the project.

He offers front and rear, and/or side mounts. He offers "inserts", or complete mount replacements.

Here are pictures:

http://www.shiftedthinking.com/csm/pictures/

He offers options, such as powdercoating, and polishing.

There are some downsides to this, which mainly would be installation. You would need to get alighment SPOT-ON, otherwise you'll never get the mounts to fit. If your car has ever had front end damage, chances are these will not be for you, due to subframe tweakage.

Vibration shouldn't increase that much on just the front and rear mounts over Prothane's or the equivilent, but there will be some serious shaking going on once you replace the two side mounts.

Please post back in this thread with questions, or PM me. Thanks.

Jehu · 03-06-2005, 05:01 PM

So what would be the advantages of having a solid mount? I can think of disadvantages, but not advantages...

DSMu4ia · 03-06-2005, 06:40 PM

Quote:

Originally Posted by Jehu

So what would be the advantages of having a solid mount? I can think of disadvantages, but not advantages...

Obviously these are not for you then.

Along the lines of replacement motor mounts from ES and Prothane, these help the motor to move less (or basically none in this case), which will reduce wheelhop.

These aren't for everyone, but either are huge turbo's and the maintenance that comes along with them. There are certain compromises which must be made for a nice setup.

SlowSpyder · 03-06-2005, 06:58 PM

one question, why would you need to do an alignment after they are installed?

DSMu4ia · 03-06-2005, 08:15 PM

Quote:

Originally Posted by SlowSpyder

one question, why would you need to do an alignment after they are installed?

Not a suspension/tire alignment, but the alignment of the engine to the mount.

You won't be able to move the engine around at all with these mounts, so it will be less than fun to bolt the mounts in.

Jehu · 03-06-2005, 11:49 PM

Quote:

Originally Posted by DSMu4ia

Obviously these are not for you then.

Along the lines of replacement motor mounts from ES and Prothane, these help the motor to move less (or basically none in this case), which will reduce wheelhop.

So what's the advantage versus urethane motor mounts?

DSMu4ia · 03-07-2005, 07:10 AM

Quote:

Originally Posted by Jehu

So what's the advantage versus urethane motor mounts?

Even less/zero movement.

gsx951 · 03-07-2005, 07:27 AM

Quote:

Originally Posted by DSMu4ia

Even less/zero movement.

Is that desirable? Do we want to remove all compliance out of the system or just stop the oscillation (Wheel hop)?

DSMu4ia · 03-07-2005, 11:37 AM

You want your suspension to do compliance/damping work, not your bushings.

The factory stuff was done because it's being sold to the general consumer who wouldn't dare drive a car that shook like a top fuel car.

I'm not saying this is the cure all for wheelhop, but it's certainly very high up there. Watch any DSM dyno video and pay attention to how much the motor moves. Even with poly bushings the amount of movement is still fairly high.

These won't be for your daily driver I'm afraid, unless you are more hardcore (most people with prothanes complain a bit about vibration at idle).

gsx951 · 03-07-2005, 01:03 PM

Quote:

Originally Posted by DSMu4ia

You want your suspension to do compliance/damping work, not your bushings.

In many areas it can be shown that a small bit of compliance is good.
That being said, if you want your motor rigid when you gas it, 2 spherical rod ends and a turnbuckle are the tried and true method here. You get ridigity under acceleration and no issues with installation.

DSMu4ia · 03-07-2005, 02:09 PM

Quote:

Originally Posted by gsx951

In many areas it can be shown that a small bit of compliance is good.
That being said, if you want your motor rigid when you gas it, 2 spherical rod ends and a turnbuckle are the tried and true method here. You get ridigity under acceleration and no issues with installation.

Solid mounts are by no means NOT "tried and true" either is the threaded rod method. But I'm just looking to see if anyone has interest in these, and so far, on these forums, there are none. I'm not trying to sell a product, nor promote it.

If you have questions about full race parts like these, then they probably aren't for you.

gsx951 · 03-07-2005, 02:34 PM

Quote:

Originally Posted by DSMu4ia

Solid mounts are by no means NOT "tried and true" either is the threaded rod method. But I'm just looking to see if anyone has interest in these, and so far, on these forums, there are none. I'm not trying to sell a product, nor promote it.

If you have questions about full race parts like these, then they probably aren't for you.

Who said anything about threaded rod?
Spherical bearing rod ends have been used in this application since before you were born.
I personally remember seeing it on cars in the early eighties, that's pretty much tried and true.

DSMu4ia · 03-07-2005, 03:14 PM

Quote:

Originally Posted by gsx951

Who said anything about threaded rod?
Spherical bearing rod ends have been used in this application since before you were born.
I personally remember seeing it on cars in the early eighties, that's pretty much tried and true.

It's all the same principle. Just because I didn't go ga ga over your spherical setup, doesn't mean I haven't seen it, or used it.

EVO guys have been using them with limited success, such as this one.

http://www.prostreetonline.com/pso/i...59-111-101.jpg

Solid mounts have been used in domestic v8's since probably the inception of time, so enough thread whoring, either you are interested in these mounts, or you aren't.

dsm dork · 03-07-2005, 03:32 PM

If you don't know what it is and the advantages/dissadvantages then it's not for you.

gsx951 · 03-07-2005, 04:21 PM

Quote:

Originally Posted by DSMu4ia

It's all the same principle. Just because I didn't go ga ga over your spherical setup, doesn't mean I haven't seen it, or used it.

EVO guys have been using them with limited success, such as this one.

http://www.prostreetonline.com/pso/i...59-111-101.jpg

Tony, that's a damper. They look similar but work differently.

Quote:

so enough thread whoring, either you are interested in these mounts, or you aren't.

Good point, I'll leave it alone.

ACKERSON · 03-15-2005, 03:40 AM

What are those inserts made of? What are the advantages of having a solidly mounted engine? If the engine and tranny cant move then it seems like something is going to break. I mean imagine a 6k rpm launch on a 1000 whp car, something has to give. Or am I wrong?

DSMu4ia · 03-15-2005, 06:13 AM

Quote:

Originally Posted by ACKERSON

What are those inserts made of? What are the advantages of having a solidly mounted engine? If the engine and tranny cant move then it seems like something is going to break. I mean imagine a 6k rpm launch on a 1000 whp car, something has to give. Or am I wrong?

The pros/cons have been listed. No breakage will occur due to having a solidly mounted engine.

I'm done with this subject, a few guys have stepped up with legitmate questions, and they've been given the machinists contact info. If anyone else would like it, please reply here.

Mike1992 · 03-18-2005, 09:40 PM

What kinda pricing are we talking here? For all 4 mounts

DSMu4ia · 03-18-2005, 09:50 PM

Please contact Chris for all further information. He's the machinist.

chris@shiftedthinking.com