All Engine Mount & Torque limiter Q&A (combined thread) - Chevy Nova Forum
Visit our sponsor, National Nostalgic Nova
 
Steve's Nova Site is an automotive enthusiast website dedicated to the 1962 - 1979 Chevrolet Nova, Chevy II and Acadian automobiles. We work together to preserve, restore, drive, show, race and provide fellowship for these classic cars. This is one of the best places to find information about parts, rebuilding, restoration and racing. This website is not affiliated with GM, General Motors or Chevrolet in any capacity.

Go Back   Chevy Nova Forum > Body, Chassis and Mechanical > Drivetrain & Performance > Best of Drivetrain & Performance


StevesNovaSite.com is the premier Chevrolet Nova Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 17th-March-2005, 01:35 AM   #1
SuperNova69

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: California
Nova(s): 69 Nova
Posts: 1,383
All Engine Mount & Torque limiter Q&A (combined thread)

K guys, I got a question. I'm thinking I need a "torque strap" (not sure what they're really called) for my engine. It's been acting up lately and I thought I had it fixed, but it started acting up again, and the first thing I checked was the timing. It looked ok, so the next thing I thought was that the cap came off because it does that a lot. It was still on. So I decided to take the cap off and check the rotor and that's when I found the problem. The cap has a huge crack in it and the rotor was totally bent. I'm thinking that my motor revved up and slammed into the firewall when I had a busted motor mount on the driver's side. I replaced both mounts but the motor still moves a lot when I rev it. Will polyurethane motor mounts help any or should I just get a torque strap? Also, does anyone actually sell them or do I have to just make my own? I'm thinking if I did get one it would help my electrical stuff, too, since it would improve the ground contact.

Any comments/opinions/advice would be great.

Matt
__________________
Matt

69 Nova - 357, TKO600, Tru-Turn, awaiting LS1 swap
  Reply With Quote
Sponsored Links
Advertisement
 
Old 17th-March-2005, 03:59 AM   #2
Zman
 
Zman's Avatar

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: Salt Lake City
Posts: 1,477
I've seen everything from a piece of chain, to cable, even a turnbuckle once...
You can check Jegs, or Summit, but the motor shouldn't move around all that much in teh first place. Maybe you just got some really crappy mounts??
Why not just fix the real problem as suggested in the other post. Do something with the distributer. Either "Clearance" the firewall for the stocer HEI, or look into a small body HEI. There are lots of Distributer choices available.
__________________
Dennis
69 Nova 355/M-21/3.90 12 bolt
68 Chevelle SS 396 4 spd.
1929 Model A Coupe Stock
  Reply With Quote
Old 17th-March-2005, 07:37 AM   #3
69NovaSS

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Dec 2004
Location: Funkytown
Posts: 10,142
Quote:
Originally Posted by SuperNova69
So I decided to take the cap off and check the rotor and that's when I found the problem. The cap has a huge crack in it and the rotor was totally bent. I'm thinking that my motor revved up and slammed into the firewall when I had a busted motor mount on the driver's side. I replaced both mounts but the motor still moves a lot when I rev it. Matt
I am not clear if you have replaced the cap and rotor since you changed your motor mounts? If not that is the first thing I would do before changing anything else. There is little chance a bent rotor and cracked cap will stay on the motor for long.
But as far an engine movement is concerned they do move a bit when reved and that is normal, of course hitting the firewall is not normal, that should be fixed with the new mounts you installed. So I susgest you fix the problems with the distributor first and see if the car is still acting up if it is then look at the mounts / torque strap. The distributor is a much easier fix than the mounts right now and may be all that is needed.
__________________
NPHNP
Do you recognize this vin:114279W458662

Last edited by 69NovaSS; 17th-March-2005 at 09:47 AM.
  Reply With Quote
Old 17th-March-2005, 09:45 AM   #4
novaboy009
 
novaboy009's Avatar

Title: Nova Guru
iTrader: (6)
Status: Offline
Join Date: Feb 2004
Location: Pittsburgh, PA
Posts: 6,835
Are you sure you had the cap cranked down all the way? Did you miss one of the tab screws? I did that once and the rotor cracked the cap rather violently.

Kev
__________________
78 Nova - autocross/drag/street car with nitrous
  Reply With Quote
Old 17th-March-2005, 10:11 AM   #5
Dawg

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: Missouri
Nova(s): 1969 Nova
Posts: 1,576
Pros/cons of solid motor mounts

Just wanted to hear it from the experts.....
__________________
69 Nova 350/TH350 bench seat and manual drums all the way around
  Reply With Quote
Old 17th-March-2005, 11:28 AM   #6
undercvrSS
 
undercvrSS's Avatar

Title: Nova Guru
iTrader: (1)
Status: Offline
Join Date: Apr 2004
Location: Ontario, CA
Nova(s): 67 SS 67 Sedan project
Posts: 3,534
Depends on what your doing with the car. Our race car has solid, and works fine, but I put urethane ones on my 67, and I hate them. For a street car use rubber. With solid you will feel evry vibration in the car, shakes and rattles galore. the benefits are that they won't break very easy, and will out last the rubber. They're also good for the reaction of the car, but they will put more twist in the car.

Last edited by undercvrSS; 17th-March-2005 at 11:30 AM.
  Reply With Quote
Old 17th-March-2005, 12:13 PM   #7
MI-76
 
MI-76's Avatar

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: Michigan
Nova(s): 76 2d
Posts: 1,192
my dad's 406 s-10 has solid motor and trans mounts. you can expect some extra vibration,. you can also expect to go over your fasteners on a regular basis and make sure they are still torqued to spec. I know his trans pan bolts get loose, so he's got to keep them in check.
__________________
Have you ever noticed?
Anybody going slower than you is an idiot, and anyone going faster than you is a moron.
-George Carlin
  Reply With Quote
Old 17th-March-2005, 12:18 PM   #8
footbrake68

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Jan 2005
Location: Cypress, Texas
Nova(s): 1974 Nova, 1968 Camaro RS
Posts: 544
Echo the same opinion ... in general - select your parts for all mounts depending on the purpose, HP and torque of your car. If you are driving on the street most of the time and looking for a comfortable ride - then go with good quality rubber bushings and mounts (body, motor, tranny, etc.) If you will be dividing your time between strip / street - then your selection is up to what you want to tolerate during street usage. Canyon carving and road course type applications you can step up to a combination of poly mounts or your preference to stiffen up the car. For the strip or mostly strip applications - drop in aluminum body mounts, welded subframe, traction control and solid mounts for the motor, etc.

Am sure you will get much more specific input from other members who have completed projects for different purposes - but these guidelines should be pretty good to start.

Hope that helps ...
__________________
Scott
1968 Camaro SS/RS 461 (... 496 Stroker - Project Underway)
1974 Nova Custom 350
1998 Firebird TA Ram Air Conv LS1
http://photobucket.com/albums/y182/footbrake68/
  Reply With Quote
Old 17th-March-2005, 03:22 PM   #9
Dawg

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: Missouri
Nova(s): 1969 Nova
Posts: 1,576
It's for a street/strip use. I never thought with solid motor mounts it works the bolts loose. I guess something that is better than the stock rubber ones.
__________________
69 Nova 350/TH350 bench seat and manual drums all the way around
  Reply With Quote
Old 17th-March-2005, 04:31 PM   #10
NovatoriusRex
 
NovatoriusRex's Avatar

Title: Nova Guru
iTrader: (1)
Status: Offline
Join Date: Dec 2003
Location: NW, Oregon
Nova(s): 67 Chevy II Nova Hardtop
Posts: 14,622
When planning my motor install, I knew I didn't want to go solid because it didn't make much sense for a car that won't see the track more than a few times a year. For a dedicated racer, possibly.

I also didn't want to worry about rubber ones wearing out quickly and needing to be replaced.

Since I'm not overly concerned with vibration that is going to be tranmitted using poly engine mounts, I chose those. We'll see how the car likes it. My thought is that unless you're driving the car every day, poly is the way to go, which is why I went that way.
__________________
-Brent



I want a new duck. One that won't steal my beer... - Weird Al
  Reply With Quote
Old 17th-March-2005, 08:18 PM   #11
SuperNova69

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: California
Nova(s): 69 Nova
Posts: 1,383
Yeah, when I saw the crack in the cap I immediately went and bought a new cap and rotor. I don't know how good the mounts are, I got them from Autozone (didn't even know they sold them there!) and they looked a LOT better than my old ones. If I rev my engine up from under the hood, you can see the rubber stretching, though. I'm thinking poly mounts might be a future upgrade...or maybe solid...I've probably opened up a can of worms just mentioning those, .

And yes, I plan on eventually getting one of those Crane Cams distributors with the allen wrench adjustable timing, but since it costs $320 for the distributor, another $150 or so for the box (since it says it needs one), and then another $50 or so for a coil, it'll be a while before I can get it. So this big old distributor will have to last.

Matt
__________________
Matt

69 Nova - 357, TKO600, Tru-Turn, awaiting LS1 swap
  Reply With Quote
Old 17th-March-2005, 09:47 PM   #12
Paul Wright
 
Paul Wright's Avatar

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Oct 1999
Location: Psychic Hotline
Posts: 8,407
The pre 73 mounts are more prone to strectching and breaking. That's why GM went to the clamshell mounts. Either put a torque limiter on the drivers side or try this old trick:

Install a solid mount on the drivers side and a regular rubber one on the pass side. Use a self locking nut on the horizontal bolt on the solid side. Don't snug it too tight. That way the engine can float on the rubber mount but not lift.
__________________
Quote:
Originally Posted by Paul Wright
Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol.
.
  Reply With Quote
Old 17th-March-2005, 10:38 PM   #13
SuperNova69

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: Feb 2004
Location: California
Nova(s): 69 Nova
Posts: 1,383
Thanks, Paul. I'll probably do whatever's cheaper. I don't mind having to use a solid mount on the driver's side since I want this to be a corner carver, so it's gonna have to have a pretty rigid chassis.

I'll start looking into some solid mounts.

Matt
__________________
Matt

69 Nova - 357, TKO600, Tru-Turn, awaiting LS1 swap
  Reply With Quote
Old 18th-March-2005, 12:41 AM   #14
novaboy009
 
novaboy009's Avatar

Title: Nova Guru
iTrader: (6)
Status: Offline
Join Date: Feb 2004
Location: Pittsburgh, PA
Posts: 6,835
I'd wrap a chain around and call it a day. Nothing more than a dollar or two. Didn't they have them as a factory option on the Z/28's?

Kev
__________________
78 Nova - autocross/drag/street car with nitrous

Last edited by novaboy009; 18th-March-2005 at 09:33 AM.
  Reply With Quote
Old 18th-March-2005, 01:21 AM   #15
72GreenRally
 
72GreenRally's Avatar

Title: Nova Guru
iTrader: (0)
Status: Offline
Join Date: May 2004
Location: Woodland, Ca
Nova(s): '72 Green Rally Nova
Posts: 8,472
Quote:
Originally Posted by novaboy009
I wrap a chain around and call it a day. Nothing more than a dollar or two. Didn't they have them as a factory option on the Z/28's?

Kev
Chain wrapped around it?? I am thinking not a factory option. Sounds more like an option added by one with crimson colored cranial support.

Randy (might have to send that one to Foxworthy!!)
__________________
Are you pondering what I'm pondering?
  Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
E85/Alcohol conversion steps (combined thread) 66novaHT Best of Drivetrain & Performance 139 1st-October-2011 08:39 AM


Site best viewed set to 1024 x 768.

All times are GMT -4. The time now is 12:51 AM.

Custom Designed for Steve's Nova Site by: vBSkinworks

 
Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Lt

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.