Motor won't match new mounts
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Motor won't match new mounts
Anybody ever have this happen???
The bolts holes will not line up.
With mounts in cradles, the holes are mere semi-circles?
I have a '91 K member front cradle, and and older block [ 1970 Lt1 ]
Brand new [ albeit A1 Cardonne] mounts?
Tried "influencing" the rubber, but that is not going to get it done. Once started the situation becomes even worse on the other end of that mount.
Getting down to needing a 5 Lb hammer and that in not right.
I am left thinking "BAD PARTS"..........
Any experience?? Is there some magic dance or sacrifice needed??
Already bought a new set for a comparison.
TJM
The bolts holes will not line up.
With mounts in cradles, the holes are mere semi-circles?
I have a '91 K member front cradle, and and older block [ 1970 Lt1 ]
Brand new [ albeit A1 Cardonne] mounts?
Tried "influencing" the rubber, but that is not going to get it done. Once started the situation becomes even worse on the other end of that mount.
Getting down to needing a 5 Lb hammer and that in not right.
I am left thinking "BAD PARTS"..........
Any experience?? Is there some magic dance or sacrifice needed??
Already bought a new set for a comparison.
TJM
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
Sounds like bad parts made in China.
No Tolerances follwed or adheared to.
Whats blueprint specs to them in China ? They dont exist.
Have You tried leaving the motor mounts loose on the engine bock while installing your engine into your Vette?
Leave the bolts only finger tight, once you have everything lined up properly, then torque down the motor mounts on the cradle and your vettes engine block with a Snap On Torque wrench to factory specs.
No Tolerances follwed or adheared to.
Whats blueprint specs to them in China ? They dont exist.
Have You tried leaving the motor mounts loose on the engine bock while installing your engine into your Vette?
Leave the bolts only finger tight, once you have everything lined up properly, then torque down the motor mounts on the cradle and your vettes engine block with a Snap On Torque wrench to factory specs.
Racer
Joined: May 2010
Posts: 315
Likes: 0
From: Central New York NY
Do you have the old mounts and old block to see where the difference is? My suggestion would be to measure from the bolt hole in the cradle to the bottom of the cradle. This way you have a measurement to take to the parts store when you start checking mounts that fit other cars.
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Was 75% sure it was junk parts .
Getting closer to 100% sure as the response show up, and no history of this or bone headness on my part.
TJM
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Don't really need another project but if I can get them this week it's a good solution.
TJM
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Sounds like bad parts made in China.
No Tolerances follwed or adheared to.
Whats blueprint specs to them in China ? They dont exist.
Have You tried leaving the motor mounts loose on the engine bock while installing your engine into your Vette?
Leave the bolts only finger tight, once you have everything lined up properly, then torque down the motor mounts on the cradle and your vettes engine block with a Snap On Torque wrench to factory specs.
No Tolerances follwed or adheared to.
Whats blueprint specs to them in China ? They dont exist.
Have You tried leaving the motor mounts loose on the engine bock while installing your engine into your Vette?
Leave the bolts only finger tight, once you have everything lined up properly, then torque down the motor mounts on the cradle and your vettes engine block with a Snap On Torque wrench to factory specs.
Nah.. loose just put the holes further outboard.
I mean short of killing a chicken we tried most things. Jiggling jacking bouncing, h_ _L I 'd have sung to it [by 8:00PM ] if I thought it would have helped!!
TJM
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
it's not a hard job drilling out the 3 eyelets and tearing the rubbers out. If you choose that route here is the PN I used on my 90 clamshells. energy suspension 31127g (you will need 2 and they are marked as lefts for an f body).
- 1986 Original Owner -
Joined: Apr 1999
Posts: 3,193
Likes: 139
From: North Yorkshire, England
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VII Veteran
Hey Mick, Any idea if these are available for the early mounts? Perhaps part number?
Pro
Joined: Jun 2005
Posts: 584
Likes: 61
From: USA
i had this problem when i replaced my drivers' side motor mount ('91 L98). i ended up running a 7/16" drill bit through the 3 holes in the motor mount for "clearance".
i slid the mount between the block & frame, I had to use a tapered drift to line up the holes for the frame mount, that required some persuasion. installed that through-bolt loose.
then installed mount-to-block bolts loose, engine weight not yet on the mount (i.e. "hover" mode). easier said than done.
after you get all the block bolts finger-started then gently lower the block incrementally while taking up the slack in the block bolts (i.e. screwing them in more snug).
you might get an aerobic workout from hopping out from under the car to get the bottom bolts, to back up on top to get the top bolts, lowering the motor a smidgen, sliding under the car again. almost like doing pushups.
yes indeed these were the Anchor 2713 made-in-china shells with Energy Suspension poly-U inserts.
you also need to make sure you're using a strong pry-bar and the right expletives, the stronger, the better. young impressionable children should not be nearby.
i slid the mount between the block & frame, I had to use a tapered drift to line up the holes for the frame mount, that required some persuasion. installed that through-bolt loose.
then installed mount-to-block bolts loose, engine weight not yet on the mount (i.e. "hover" mode). easier said than done.
after you get all the block bolts finger-started then gently lower the block incrementally while taking up the slack in the block bolts (i.e. screwing them in more snug).
you might get an aerobic workout from hopping out from under the car to get the bottom bolts, to back up on top to get the top bolts, lowering the motor a smidgen, sliding under the car again. almost like doing pushups.
yes indeed these were the Anchor 2713 made-in-china shells with Energy Suspension poly-U inserts.
you also need to make sure you're using a strong pry-bar and the right expletives, the stronger, the better. young impressionable children should not be nearby.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
The mounts on it now had a 1/2 teaspoon of shredded rubber come out when we removed the bolt [ that one side went in with a hammer... That sound got me over there but it was too late].
TJM
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
yes indeed these were the Anchor 2713 made-in-china shells with Energy Suspension poly-U inserts.
you also need to make sure you're using a strong pry-bar and the right expletives, the stronger, the better. young impressionable children should not be nearby.[/QUOTE]
Yes Indeed they are Anchor Products!! The last I will ever buy.
It is no chore swapping, other than time.
Work is a pleasure. Our shop has most everything you want from 5 ton forklifts, all the air tools, and spacious shop areas..
Very lucky . We never broke a sweat putting it all together and getting it into place... then this.....
I wonder what "SCREWED" in Mandarin is??
TJM
you also need to make sure you're using a strong pry-bar and the right expletives, the stronger, the better. young impressionable children should not be nearby.[/QUOTE]
Yes Indeed they are Anchor Products!! The last I will ever buy.
It is no chore swapping, other than time.
Work is a pleasure. Our shop has most everything you want from 5 ton forklifts, all the air tools, and spacious shop areas..
Very lucky . We never broke a sweat putting it all together and getting it into place... then this.....
I wonder what "SCREWED" in Mandarin is??
TJM
- 1986 Original Owner -
Joined: Apr 1999
Posts: 3,193
Likes: 139
From: North Yorkshire, England
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VII Veteran
Things are going slowly as the weather is pretty bad here right now. I'll PM you a pic of my mounts with the 31127g, maybe I'm just doing something wrong as I also believe the mount was the same for the L98 (I think even the L83 in '84 used the 17984499 mount).
Last edited by Ray Quayle; Dec 14, 2010 at 10:30 AM.
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
TJM
- 1986 Original Owner -
Joined: Apr 1999
Posts: 3,193
Likes: 139
From: North Yorkshire, England
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VII Veteran
Sorry Tom, I didn't want to take up any more of your thread. I guess it is related, so I'll post the pics of the poly and my mounts with the eyelets drilled out and the rubber removed here. I've been pulled into work and won't get to my garage until Sunday.
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
I used Anchor mounts for my build. I sent them back because the holes didn't line up with the block.
Rock Auto's "house" brand of the same thing worked fine. They showed up with Anchor stamped on the plain boxes! LOL
Rock Auto's "house" brand of the same thing worked fine. They showed up with Anchor stamped on the plain boxes! LOL