motor mount replacing C3 77
Le Mans Master
Joined: Aug 2005
Posts: 6,541
Likes: 1,975
From: Temple Terrace Florida
I have replaced them on the car with the engine in place. I made a wooden cradle to jack up the engine a few inches to replace the mount. Watch your fingers, the distributer and fan shroud. Jerry
Le Mans Master
Joined: Jun 2019
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From: Indiana
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
Here is a run-down on proper motor & trans mounts:
Rubber front / rubber rear.
Solid front / rubber rear.
Solid front / solid rear
But NEVER rubber front / solid rear. (things will snap)
Not too bad a job. Really watch where you put your fingers if something slips. Maybe an extra wedge in case it does slip.
Loctite Blue on all the bolts.
You may want to go with the Moroso Solid mounts and never look back.
Rubber front / rubber rear.
Solid front / rubber rear.
Solid front / solid rear
But NEVER rubber front / solid rear. (things will snap)
Not too bad a job. Really watch where you put your fingers if something slips. Maybe an extra wedge in case it does slip.
Loctite Blue on all the bolts.
You may want to go with the Moroso Solid mounts and never look back.
Last edited by HeadsU.P.; Aug 15, 2024 at 06:38 PM.
Race Director
Joined: Nov 2006
Posts: 13,248
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From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
I've replaced a few motor mounts over the years.
I've had the engine bouncing against the hood.
Never had it cause a issue shifting however.
There Pretty easy to change, just jack one side of the engine at a time. Block of wood on the oil pan is all ya need.
I've had the engine bouncing against the hood.
Never had it cause a issue shifting however.
There Pretty easy to change, just jack one side of the engine at a time. Block of wood on the oil pan is all ya need.
Race Director
Joined: Nov 2006
Posts: 13,248
Likes: 7,840
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
this last time. Oh about 7 or 8 years ago now, so I guess I'm about due again. Anyway, the last time I replaced all 3. Just because. And although my trans mount was 40 years old. My car is a manual that has had a hard life. That original mount actually still looked pretty good.
So, I'm thinking if your trans mount is solid, perhaps you might wish to loosen it up a tad.
But a rubber trans mount? Lifting one side of the engine about an inch or so at the motor mount is a very, very slight twist on that trans mount.
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Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
I have that ^^^^^^ framed in glass on my garage wall.
Here is another.
Backseats Can Cause Accidents.
Accidents Cause Children
No Backseats, No Accidents
Corvette Safety Association
Here is another.
Backseats Can Cause Accidents.
Accidents Cause Children
No Backseats, No Accidents
Corvette Safety Association
Last edited by HeadsU.P.; Aug 17, 2024 at 06:53 PM.
