Solid Motor Mounts - Good or Bad?
 

Has anyone had any bad experiences with solid motor mounts? I had heard that they could deform the cylinder block. Would the poly mounts with a torque brace be more efficient? Should a solid tranny mount be used with the solid side mounts?:confused:

Thanks!

Lew

Re: Solid Motor Mounts - Good or Bad?
 

A couple folks that I know personally have cracked their automatic transmission housings using a solid transmission mount.
Most use solid engine/frame mounts that I know of.

Clark

Re: Solid Motor Mounts - Good or Bad?
 

Ran them on my wagon Lew and never had a problem....

Re: Solid Motor Mounts - Good or Bad?
 

Solid fronts mounts
Solid mid mounts
Stock transmission mount on fabbed cross-member

Re: Solid Motor Mounts - Good or Bad?
 

Solid motor mounts, a torque restraint, and a polyurethane transmission mount, is the ideal setup, if you're not allowed motorplates. And even with motor plates, front and mid, I use a polyurethane transmission mount, never a solid.

Re: Solid Motor Mounts - Good or Bad?
 

Used solid mounts and a rubber trans mount for the better part of the 17 years and over 4000 passes I made with this nearly 2 ton ride, without issue. I would never used a solid trans mount.

http://i381.photobucket.com/albums/o...n6-15-08-1.jpg

Re: Solid Motor Mounts - Good or Bad?
 

Thanks, everyone!

I'll pick up the mounts this week.

Lew

Re: Solid Motor Mounts - Good or Bad?
 

Just wondering, why do they even make a solid tranny mount? I don't know anyone the uses one and everyone will tell you to never use one unless you enjoy broken cases.

Re: Solid Motor Mounts - Good or Bad?
 

Circle track guys use them. And people you can't tell anything will try them, then wonder why they're having problems.

Re: Solid Motor Mounts - Good or Bad?
 

Full Chassis cars with 2x3 frames rails. Both of our cars had solid trans mounts and never busted or cracked anything.

Re: Solid Motor Mounts - Good or Bad?
 

I think Lew is building a stocker , there would be a diff.

Re: Solid Motor Mounts - Good or Bad?
 

Lew, pick up one of those red poly "Energy Suspension"? trans mounts from Jeg's or Summit. Nice piece, and well worth the difference over the $10 Chinese crap.

Re: Solid Motor Mounts - Good or Bad?
 

I've even heard that using a poly trans mount can cause broken extension housings. Was advised to use a stock rubber mount. This was in a small block Mopar A-Body.

Re: Solid Motor Mounts - Good or Bad?
 

Anybody try a front and mid-plate and no tranny mount?

Re: Solid Motor Mounts - Good or Bad?
 

I hate to blow everyone out of the water but dad's Camaro has solid engine & trans mounts & I bet it has made more passes then anybody's on this forum in the last 20 years with no trouble! (it is just a "bracket" car though, high 12's)

Re: Solid Motor Mounts - Good or Bad?
 

To over simplify it: Chassis Flex.

When the engine puts applies torque to the chassis it rotates it. The twist is what makes the left front wheel lift more than the other. Solid mounts make the engine & trans. part of the structure of the chassis. If there is flex in that area the weak point is generally the trans. case.

My 2 cars have solid engine mounts and stock rubber trans. mounts.
Poly mount will be more stiff than rubber so if you have little flex your good.
All solid mounts would guess there is not much flex in that area.

Have seen cars with front and mid engine plates both with and without trans. mounts.

It's about engine torque, chassis stiffness and the resulting flex when torque is applied.

My .02

Re: Solid Motor Mounts - Good or Bad?
 

I've used solid motor and trans mounts for over 25 yrs in both my 64 nova bracket car,put over 6000 passes on this car before I sold with solid mounts.My current Camaro has solids mounts and I've put about five thousands passes on this car with no issues using solid mount for trans and engine.

Re: Solid Motor Mounts - Good or Bad?
 

We have used solid mounts in our bracket car and our stocker, both engine and trans for years without problem. Good luck with your build.

Re: Solid Motor Mounts - Good or Bad?
 

Years ago when I ran the three speed I had solid front mounts,solid bellhousing mounts and no transmission mount. Never had any problems but would not do that again.

Since going to the four speed I have added the trans mount.

Re: Solid Motor Mounts - Good or Bad?
 

off topic, would anyone know the part number for the bbc solid mounts for camaro (68), the moroso's

Re: Solid Motor Mounts - Good or Bad?
 

I believe I used the 62510s in Chrome when they still had them. Make sure your bases mounts are correct.

Re: Solid Motor Mounts - Good or Bad?
 

Why not? I'm just looking at one last step in R&R trans.

Re: Solid Motor Mounts - Good or Bad?
 

Solid motor and trans mount.Car was built in 1985 and only suffered 1 broken trans case. No anti roll bar and car does twist. I agree it doesnt sound like it should work but it seems to be fine.

Re: Solid Motor Mounts - Good or Bad?
 

In my case I have changed to a Ford Toploader and with the cast iron case it weighs a beastly 110 lbs. Felt it would be too much weight hanging off the back with no support. It may or may not be a problem but did not want to take a chance on breaking an ear off or worse.

Once the Jerico is in next year I might leave the rear mount off as the trans is 40 lbs lighter.

Allan

Re: Solid Motor Mounts - Good or Bad?
 

wow they had chrome ones? Yea I just picked up the bbc stands brand new at local swapp meet. I have the correct x-member too...the only mounts I see from moroso are in gold..

Re: Solid Motor Mounts - Good or Bad?
 

Paul Crowe told me story one time about driving a 55-57 chevy, no crossmember.I can't remember which but anyway he crossed finish line heard bang ,evidently lost driveshaft and broke trans threw all on the ground,he said that was weird feeling for shifter to yanked out of your hand and disappear.
Mike Taylor 3601

Re: Solid Motor Mounts - Good or Bad?
 

Yikes! On that note the cross-member stays when the Jerico goes in next year.

Allan

Re: Solid Motor Mounts - Good or Bad?
 

Much as I remember (and it's been a while!), didn't the 55-57 Chevy have the rear mounts on the bell housing? Or was that just on the trucks?

I once had a Top loader in my Nova that bent the factory crossmember before I braced it, a little heavier than a muncie. :o

Lew

Re: Solid Motor Mounts - Good or Bad?
 

[QUOTE=55 Chevy;249686]Yikes! On that note the cross-member stays when the Jerico goes in next year.

You will like the Jerico better..Also my father had a old B/W 3 speed blow most of the case off and the main shaft and the drive shaft stayed together! He did say there were some shifting rods draging the ground because he was holding onto the shifter, so it would not drop onto the track. Ah yes he said the good days of Junior Stock. That was in his 55 wagon I think.

Re: Solid Motor Mounts - Good or Bad?
 

Robert -

I had the same experience with my first car - '57 150 Business Coupe 283 2-bbl. After NHRA outlawed the four speed, I tried a three speed. Spent a lot of money on a lot of new parts and modifications on the 3-speed. When I got it together, I threw mufflers on it, drove it around to break it in, then one blast down the highway to try it out. The one blast blew the cluster gear out on to the street on the one two shift.

Re: Solid Motor Mounts - Good or Bad?
 

Yes, the stock 55-57 cars have the rear mounts on the bellhousing. The originals were a "rubber" style that over time got really sloppy because of leaking oil/transmission fluid. I had special steel ones made that mount in the original spots which I currently still use.

Robert,I too used to run the T-16. Took an original sidecover in one time to have a bushing pressed on the 2/3 boss to strenghthen it. They threw it out by mistake and ended up making me one out of steel. It sure shifted better.
I am looking forward to the Jerico and am on a mission to make it work while retaining my original bench seat.

Allan

Re: Solid Motor Mounts - Good or Bad?
 

I am looking forward to the Jerico and am on a mission to make it work while retaining my original bench seat.

Allan, we run the bench seat in ours, it is cut out in the center for the stick and the long shifter off the jerico fits just rite. You will ne believe the difference. Did you get the clutchless? Best of luck keep in touch.

Robert

Re: Solid Motor Mounts - Good or Bad?
 

Hello Robert

The Jerico is next years purchase. It will be the regular DR-4 and will not be the clutchless version. Debate will be what will first gear be. Either 3.19 or 3.29. Currently I have a 2.78 in the toploader which is not enough but it is the lowest they go. I am going to see if we can make the Long shifter work without notching the seat. Jerico says no but I made a bracket with the toploader that moves my super shifter to fourteen inches from the front of the transmission. The Long is not nearly as compact as the Hurst so we will see.

Allan