Motor mount cable?
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
Motor mount cable?
I'm reading one of the books I recently bought, it's the NCRS '1968-69 Corvette Technical Information Manual & Judging Guide' Third Edition. On page 84 at the top under 'Engine Mounts' it states there was a factory recall for all 1969's and they added a cable to the front of the engine mounts for safety.
Can you post a picture if you have that on your car? Not sure I need one but it sounds like an important part so I want to know what I'm looking for just in case.
Can you post a picture if you have that on your car? Not sure I need one but it sounds like an important part so I want to know what I'm looking for just in case.
Drifting
Joined: Oct 2007
Posts: 1,317
Likes: 22
From: Marina CA
What would happen is the left motor mount would seperate the engine would lift up and jam the throttle from returning to idle speed and put the fan through the fan shroud. The cable was added to limit the engine from lifting up enough to cause the above to happen.
Many drivers had to change their shorts after the throttles jammed and the car continued to accelerate with their foot off the pedal!
The later mounts had tha anti-lift bars on them and the cables were no longer needed.
Sorry no photos, somewhere in a box I have the original TSB we used at the dealers to install the cable.
Many drivers had to change their shorts after the throttles jammed and the car continued to accelerate with their foot off the pedal!
The later mounts had tha anti-lift bars on them and the cables were no longer needed.
Sorry no photos, somewhere in a box I have the original TSB we used at the dealers to install the cable.
Last edited by 1Fordman; Mar 27, 2014 at 10:46 AM.
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
What would happen is the left motor mount would seperate the engine would lift up and jam the throttle from returning to idle speed and put the fan through the fan shroud. The cable was added to limit the engine from lifting up enough to cause the above to happen.
Many drivers had to change their shorts after the throttles jammed and the car continued to accelerate with their foot off the pedal!
The later mounts had tha anti-lift bars on them and the cables were no longer needed.
Sorry no photos, somewhere in a box I have the original TSB we used at the dealers to install the cable.
Many drivers had to change their shorts after the throttles jammed and the car continued to accelerate with their foot off the pedal!
The later mounts had tha anti-lift bars on them and the cables were no longer needed.
Sorry no photos, somewhere in a box I have the original TSB we used at the dealers to install the cable.
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
Team Owner
Joined: Sep 2006
Posts: 31,218
Likes: 4,302
From: Westminster Maryland
Hi,
Lou is right, one of the engine mount bolts also mounts the forward end of the boomerang spark plug wire heat shield.
On small block cars with the safety engine mounts the 4, (2 each side), front spark plug wires can be threaded through the mount starting at the mount….. the distributor cap rubber boot on the wire can fit through the mount, but the spark plug rubber boot won't fit through it. You can also thread the wires through the boomerangs.
Regards,
Alan
This is left side looking forward.
The hex head bolt at the forward end of the heat shield is one of the bolts from the engine mount to the engine block.
Lou is right, one of the engine mount bolts also mounts the forward end of the boomerang spark plug wire heat shield.
On small block cars with the safety engine mounts the 4, (2 each side), front spark plug wires can be threaded through the mount starting at the mount….. the distributor cap rubber boot on the wire can fit through the mount, but the spark plug rubber boot won't fit through it. You can also thread the wires through the boomerangs.
Regards,
Alan
This is left side looking forward.
The hex head bolt at the forward end of the heat shield is one of the bolts from the engine mount to the engine block.
Last edited by Alan 71; Mar 27, 2014 at 01:29 PM.
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
Hi,
On small block cars with the safety engine mounts the 4, (2 each side), front spark plug wires can be threaded through the mount starting at the mount….. the distributor cap rubber boot on the wire can fit through the mount, but the spark plug rubber boot won't fit through it.
Regards,
Alan
On small block cars with the safety engine mounts the 4, (2 each side), front spark plug wires can be threaded through the mount starting at the mount….. the distributor cap rubber boot on the wire can fit through the mount, but the spark plug rubber boot won't fit through it.
Regards,
Alan
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
So, are the motor mounts you buy new now the safer ones or are they like the original mounts? I just need to know what I should have so there won't be any issues in the future.
P.S. Alan, it's hard for me to even recognize the parts you're talking about on your engine, it doesn't look like mine......yours isn't covered in grease and dirt so I don't have to squint to see what I'm looking at...absolutely blinding! Good job!!
P.S. Alan, it's hard for me to even recognize the parts you're talking about on your engine, it doesn't look like mine......yours isn't covered in grease and dirt so I don't have to squint to see what I'm looking at...absolutely blinding! Good job!!
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Team Owner
Joined: Sep 2006
Posts: 31,218
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From: Westminster Maryland
Hi,
Most of the vendors list both the original style and the 'safety' style engine mount for 68-69 cars.
If originality isn't an issue then the 'safety' style mount would be a good choice.
Regards,
Alan
Most of the vendors list both the original style and the 'safety' style engine mount for 68-69 cars.
If originality isn't an issue then the 'safety' style mount would be a good choice.
Regards,
Alan
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
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Drifting
Joined: Oct 2009
Posts: 1,939
Likes: 199
From: Palm Bay Florida
If you use the safety mounts on a 68-69 you have to change to the 70 and up boomerangs they are probably rusty any way I always do this safety upgrade on any cars that are not going to be NCRS judged. Have been doing this for over 20 years there's nothing quite like the ride in a corvette with the throttle stuck wide open till you find the key to shut it off. Ask me how I know!
Mark
Mark
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
If you use the safety mounts on a 68-69 you have to change to the 70 and up boomerangs they are probably rusty any way I always do this safety upgrade on any cars that are not going to be NCRS judged. Have been doing this for over 20 years there's nothing quite like the ride in a corvette with the throttle stuck wide open till you find the key to shut it off. Ask me how I know!
Mark
Mark
I'll check around for those boomerangs
Le Mans Master
Joined: Jun 2006
Posts: 6,399
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From: Tampa Florida
Le Mans Master
Joined: Feb 2011
Posts: 5,943
Likes: 61
From: Southern NH
i had the recall cable on my '68 Camaro. I should have taken it off before I got rid of it. I bet there's not many around anymore.
EDIT: actually, there's a few on Ebay
http://www.ebay.com/itm/Engine-Tie-Cable-From-1969-Chevrolet-camaro-With-350-Cubic-Inch-Motor-/331160509132?pt=Vintage_Car_Truck_Parts_Accessories&hash=item4d1ab45acc&vxp=mtr
EDIT: actually, there's a few on Ebay
http://www.ebay.com/itm/Engine-Tie-Cable-From-1969-Chevrolet-camaro-With-350-Cubic-Inch-Motor-/331160509132?pt=Vintage_Car_Truck_Parts_Accessories&hash=item4d1ab45acc&vxp=mtr
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
i had the recall cable on my '68 Camaro. I should have taken it off before I got rid of it. I bet there's not many around anymore.
EDIT: actually, there's a few on Ebay
Engine Tie Cable from 1969 Chevrolet Camaro with 350 Cubic inch Motor | eBay
EDIT: actually, there's a few on Ebay
Engine Tie Cable from 1969 Chevrolet Camaro with 350 Cubic inch Motor | eBay
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
We were talking with a friend last night and he said that's what they used to use. I would have been surprised too!
Thread Starter
Racer
Joined: Jan 2014
Posts: 470
Likes: 0
i had the recall cable on my '68 Camaro. I should have taken it off before I got rid of it. I bet there's not many around anymore.
EDIT: actually, there's a few on Ebay
Engine Tie Cable from 1969 Chevrolet Camaro with 350 Cubic inch Motor | eBay
EDIT: actually, there's a few on Ebay
Engine Tie Cable from 1969 Chevrolet Camaro with 350 Cubic inch Motor | eBay
http://www.ebay.com/itm/1965-1969-GM-Chevrolet-283-307-327-350-engine-motor-lift-stop-cable-NOS-V8-/290688969378?pt=Vintage_Car_Truck_Parts_Accessories&hash=item43ae69aaa2&vxp=mtr
Drifting
Joined: Jul 2004
Posts: 1,556
Likes: 91
From: Skiatook. Oklahoma.
Yes, there is a left and right.
They don't attach to the motor mount's. They're attached to the (1 ea.) front bolt of the exhaust manifold (top arrow). The bottom of the bracket fit's up against the head (bottom arrow).
They don't attach to the motor mount's. They're attached to the (1 ea.) front bolt of the exhaust manifold (top arrow). The bottom of the bracket fit's up against the head (bottom arrow).