Eng. movement

Reply Subscribe

Thread Tools

Search this Thread

Jul 11, 2010 | 04:30 PM

glassman74

Thread Starter

Racer

Joined: Aug 2007

Posts: 323

Likes: 0

From: CA

Eng. movement

How much should the back of the eng. move under a power brake in
Drive? Mine moves around an inch or more. At the trans. mount, it
moves 2 to 3 inches. Is this normal???? Thanks glassman74

Jul 11, 2010 | 05:32 PM

glassman74

Thread Starter

Racer

Joined: Aug 2007

Posts: 323

Likes: 0

From: CA

ttt

Jul 11, 2010 | 09:04 PM

rodj

Le Mans Master

Joined: Aug 2000

Posts: 8,838

Likes: 31

From: Australia

Quote:

Originally Posted by glassman74

At the trans. mount, it moves 2 to 3 inches.

In which direction?
should see little if any movement at trans

Jul 11, 2010 | 11:23 PM

glassman74

Thread Starter

Racer

Joined: Aug 2007

Posts: 323

Likes: 0

From: CA

Rodj,
It is up/dn movement. What is a little movement?? Its a 92 coupe.
Thanks. glassman74

Jul 11, 2010 | 11:41 PM

rodj

Le Mans Master

Joined: Aug 2000

Posts: 8,838

Likes: 31

From: Australia

Quote:

Originally Posted by glassman74

What is a little movement??

None.
Should only see a little rotation with engine torque equal to how much the engine moves which should be very little unless the engine mounts are shot.
Engine should " twist ", maybe a 1" at most ;rather than lift up

Jul 12, 2010 | 09:48 AM

CorvetteMike2024

Corvette Enthusiast

Joined: Oct 2007

Posts: 6,794

Likes: 2,706

From: So. Cal.

2025 C7 of the Year Finalist- Unmodified

2024 C7 of the Year Finalist - Unmodified

2023 C7 of the Year Finalist - Unmodified

Put a flat block of wood under your oil pan on a floor jack and see if your motor mounts are broken. Check both ends of the C beam bolts for being tight.

Last edited by CorvetteMike2024; Jul 12, 2010 at 09:50 AM.

Jul 12, 2010 | 11:33 AM

glassman74

Thread Starter

Racer

Joined: Aug 2007

Posts: 323

Likes: 0

From: CA

Mike,
What is the C beam? Is it the L shaped thing that goes from trans to diff.?
It is up/dn movement at the end of trans. Thanks. glassman74

Jul 12, 2010 | 12:27 PM

CorvetteMike2024

Corvette Enthusiast

Joined: Oct 2007

Posts: 6,794

Likes: 2,706

From: So. Cal.

2025 C7 of the Year Finalist- Unmodified

2024 C7 of the Year Finalist - Unmodified

2023 C7 of the Year Finalist - Unmodified

Quote:

Originally Posted by glassman74

Mike,
What is the C beam? Is it the L shaped thing that goes from trans to diff.?
It is up/dn movement at the end of trans. Thanks. glassman74

Hey neighbor,

Its the long beam that mounts to the back of the trans and goes to the differential. C4's dont have conventional tranny mounts like older vettes. Check the bolts at the rear of the tranny. Their was a cool thread here with corvetteronw showing a C4 drive train without the body on it.
Mike
Check out the pics Ron posted up here a while ago
http://forums.corvetteforum.com/c4-g...am-photos.html