Author Topic: Time for new Motor and Trans Mounts  (Read 339 times)

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Offline Mike_B_SVT

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Time for new Motor and Trans Mounts
« on: October 12, 2017, 11:32:13 pm »
Probably a little past time >.<

Are the reproduction motor mounts any good?  Or should I kitty up the extra dough for a set of NOS D1ZZ's?
I admit, I'm a bit hesistant to spend extra on 46yo rubber, which is why I'm asking.
I already have the repro Trans mount, from Mansfield.

Sooo...  Looking for advice on how to replace all of these mounts without destroying myself or anything in or on the car.

I've never tried jacking up the engine, so I'm not sure the best way to go about doing that.  I understand not to jack against the oil pan, but that doesn't leave many places to put the jack.

I imagine the trans mount I should be able to just put a jack under the body or tail for support and that should do the trick, right?


Also, I tried googling up the part number on my motor mounts (D0ZA-6038-C) but got no significant hits!  Were they even the correct part?

~ Mike B.

2003 Mustang Cobra Convertible
Sonic Blue 1 of 354

1970 Cougar Eliminator (Competition Gold / Black Decor Interior)
1 of 70 with 428SCJ, Ram Air, 4-speed.

Offline 428 CJ hardtops

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Re: Time for new Motor and Trans Mounts
« Reply #1 on: October 13, 2017, 07:07:48 am »
Put a short piece of 2x4 on edge put it under the oil pan rail and jack up one side at a time .If you have the factory lift hooks in place you could use them on side at a time to raise each side separately .You are correct just raise the tail shaft and change the mount .The last D1ZZ mounts were probably made a lot later than 40 years ago .You could get them from Ford until a few years ago .Don't know about the repro mounts though to comment.
had many 428 CJ and SCJ cars over the last 30 years.I currently own a 68 1/2 coupe and a 69 R code SCJ Coupe and a 70 R code SCJ Cougar Eliminator .I am looking for a 70 428 coupe if anybody knows of one for sale.

Offline Mike_B_SVT

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Re: Time for new Motor and Trans Mounts
« Reply #2 on: October 13, 2017, 08:37:28 pm »
Put a short piece of 2x4 on edge put it under the oil pan rail and jack up one side at a time .If you have the factory lift hooks in place you could use them on side at a time to raise each side separately .You are correct just raise the tail shaft and change the mount .The last D1ZZ mounts were probably made a lot later than 40 years ago .You could get them from Ford until a few years ago .Don't know about the repro mounts though to comment.

Thank you, Sir!  I appreciate the info!

How far do I need to actually jack up the engine to swap the mounts?  Looking over various pics, it does not look like the CJ mounts have a stud or anything like that that needs room to clear.  Looks like just an inch or two should do the trick, then slide out the old one and slide in the new... and then swear at the holes that don't line up right, LOL!

I'm thinking that if I loosely screw the new mount to the engine block first, I should be able to lower it into place against the frame mount and shift the mount around enough to line up everything before tightening it all down.  Only three bolts, right?  How hard can it be?  (famous last words, I know!)

Oh, speaking of tightening down... is there a torque spec?
I suppose I can read my Ford manual to find it though ;-)
~ Mike B.

2003 Mustang Cobra Convertible
Sonic Blue 1 of 354

1970 Cougar Eliminator (Competition Gold / Black Decor Interior)
1 of 70 with 428SCJ, Ram Air, 4-speed.

Offline 428 CJ hardtops

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Re: Time for new Motor and Trans Mounts
« Reply #3 on: October 13, 2017, 09:02:47 pm »
A couple inches should be enough to get it out .2 bolts on the rubber mount and one on the frame mount .Just real tight I don't think there is a torque spec .
had many 428 CJ and SCJ cars over the last 30 years.I currently own a 68 1/2 coupe and a 69 R code SCJ Coupe and a 70 R code SCJ Cougar Eliminator .I am looking for a 70 428 coupe if anybody knows of one for sale.

Offline ed meyer

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Re: Time for new Motor and Trans Mounts
« Reply #4 on: October 13, 2017, 11:56:50 pm »
mike I would  keep your originals since all 3are unique to 70 only  if u want to be concours correct  maybe switch lh mount to rh as one side gets more torqueing & wears more than the other from engine lift if you have a 4-speed,

Offline Mike_B_SVT

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Re: Time for new Motor and Trans Mounts
« Reply #5 on: October 14, 2017, 01:21:24 am »
mike I would  keep your originals since all 3are unique to 70 only  if u want to be concours correct  maybe switch lh mount to rh as one side gets more torqueing & wears more than the other from engine lift if you have a 4-speed,

Thanks Ed, I did plan to keep them.  So the D0ZA motor mount is original for the '70 CJ?

Any idea what they changed when they went to the D1ZZ mount?
~ Mike B.

2003 Mustang Cobra Convertible
Sonic Blue 1 of 354

1970 Cougar Eliminator (Competition Gold / Black Decor Interior)
1 of 70 with 428SCJ, Ram Air, 4-speed.

Offline 428 CJ hardtops

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Re: Time for new Motor and Trans Mounts
« Reply #6 on: October 14, 2017, 06:31:15 am »
Just an updated engineering number .
had many 428 CJ and SCJ cars over the last 30 years.I currently own a 68 1/2 coupe and a 69 R code SCJ Coupe and a 70 R code SCJ Cougar Eliminator .I am looking for a 70 428 coupe if anybody knows of one for sale.

Offline Brian Conway

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Re: Time for new Motor and Trans Mounts
« Reply #7 on: October 14, 2017, 08:38:44 am »
FWIW; the mounts on my 69 are D1ZA-6038-CA.  Brian
65 5R09A 4 spd  GT  Built 5/29/65 
69 9T02R 4 spd  SCJ Built 9/19/68
Owner Driver Mechanic

Offline Vcode

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Re: Time for new Motor and Trans Mounts
« Reply #8 on: October 14, 2017, 02:27:19 pm »
I have seen C7ZA, C8ZA, D0ZA and the D1ZA.
Don't know if there every was a C9ZA mount.
I have the D1ZA in mine.
'69 Mach 1 SCJ

Offline ed meyer

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Re: Time for new Motor and Trans Mounts
« Reply #9 on: October 14, 2017, 11:48:58 pm »
in 70 the doza  motor & frame mounts changed hole size on the long bolt holes.

Offline Mike_B_SVT

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Re: Time for new Motor and Trans Mounts
« Reply #10 on: October 15, 2017, 01:49:48 am »
in 70 the doza  motor & frame mounts changed hole size on the long bolt holes.

Thanks Ed,

If I change to the D1ZZ mounts, will I need different bolts?
~ Mike B.

2003 Mustang Cobra Convertible
Sonic Blue 1 of 354

1970 Cougar Eliminator (Competition Gold / Black Decor Interior)
1 of 70 with 428SCJ, Ram Air, 4-speed.