C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Is my engine frozen?

Thread Tools
 
Search this Thread
 
Old Dec 16, 2007 | 06:05 PM
  #1  
halsted9's Avatar
halsted9
Thread Starter
Heel & Toe
10 Year Member
 
Joined: Dec 2007
Posts: 21
Likes: 0
Default Is my engine frozen?

I am original owner of a '77 that I let sit (indoors) for about 10 years while pursuing a career in medicine. As a winter project, I hope to get it road-worthy. I have not tried to start this car yet.So far, I siphoned out the old gas, pulled the plugs, squirted some oil in the cylinders. I tried to hand crank by turning 5/8 ratchet at fly-wheel per a friends suggestion, but it doesn't budge(belts have been loosened). The car can roll freely in neutral(which is how it sat) but does not want to slide into any gear with or without clutch depressed. I don't know if this is a separate problem or related to the above. I am afraid to crank engine at this time. Anybody have any ideas or suggestions? I am new to this forum and obviously not a seasoned mechanic, but love to tinker. Thanks.
Reply
Old Dec 16, 2007 | 06:43 PM
  #2  
Artsvette73's Avatar
Artsvette73
Drifting
 
Joined: Jan 2004
Posts: 1,991
Likes: 3
From: Piscataway NJ
Default

Try spraying some penetrating oil in the cylinders let it sit a couple days do it again. P Blaster if you can get it. Most likely locked up from sitting.
Reply
Old Dec 16, 2007 | 06:59 PM
  #3  
SIXFOOTER's Avatar
SIXFOOTER
Le Mans Master
Supporting Lifetime Gold
10 Year Member
 
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Default

Stick a new battery in it, push in the clutch and turn the key, see if it turns over. Just bump it. Make sure the tranny is actually in neutral, it might be hung in 2 gears.
Reply
Old Dec 16, 2007 | 07:17 PM
  #4  
Retro78's Avatar
Retro78
Drifting
15 Year Member
 
Joined: Oct 2004
Posts: 1,259
Likes: 7
From: Ontario
Default

I would not want to use the starter yet.

Are you using a short standard length ratchet with that 5/8" socket? Put a longer breaker bar on that socket after letting it sit with more oil in the cylinders as suggested above.

I expect than even after you break it free and get it running you will be rebuilding it shortly down the road. There will be issues down the road. Letting these sit is not good. Might as well skip what you are trying todo now and go right to a tear-down... freshen up with rings and bearings. That is what I would do.

Too bad that oil was not sprayed in over the years. Very cool that you are the original owner and kept it, bring her back to life.

Last edited by Retro78; Dec 16, 2007 at 07:19 PM.
Reply
Old Dec 16, 2007 | 07:52 PM
  #5  
1Z87L8's Avatar
1Z87L8
Drifting
10 Year Member
 
Joined: Nov 2005
Posts: 1,795
Likes: 1
Default

Originally Posted by carguy4sure
I would not want to use the starter yet.

Are you using a short standard length ratchet with that 5/8" socket? Put a longer breaker bar on that socket after letting it sit with more oil in the cylinders as suggested above.

I expect than even after you break it free and get it running you will be rebuilding it shortly down the road. There will be issues down the road. Letting these sit is not good. Might as well skip what you are trying todo now and go right to a tear-down... freshen up with rings and bearings. That is what I would do.

Too bad that oil was not sprayed in over the years. Very cool that you are the original owner and kept it, bring her back to life.

do not bump it over or you risk breaking a ring.

an old mechanic friend of mine ( may he RIP ) always used a mix of
2 cycle oil and gasoline.

he put one of the small cans of oil to a whole gallon of gas
would dump a cup full in each cylinder of the mixture and put the plugs back in,
let it set for a week, pull all of the plugs back out and then grab his 24" breaker bar and crank socket and crank the engine backwards.
always worked when i seen him do it that way.

since you mention that is a 4 speed could also be a rusted and stuck clutch plate.
Reply
Old Dec 16, 2007 | 08:28 PM
  #6  
halsted9's Avatar
halsted9
Thread Starter
Heel & Toe
10 Year Member
 
Joined: Dec 2007
Posts: 21
Likes: 0
Default

If it is a frozen clutch plate, would that explain why I can't slide the shifter into any of the gears or is this a separate problem? If clutch plate is frozen, should car be able to roll in neutral? Meantime, I will place more lube into cylinders and let sit.

Originally Posted by 1Z87L8
do not bump it over or you risk breaking a ring.

an old mechanic friend of mine ( may he RIP ) always used a mix of
2 cycle oil and gasoline.

he put one of the small cans of oil to a whole gallon of gas
would dump a cup full in each cylinder of the mixture and put the plugs back in,
let it set for a week, pull all of the plugs back out and then grab his 24" breaker bar and crank socket and crank the engine backwards.
always worked when i seen him do it that way.

since you mention that is a 4 speed could also be a rusted and stuck clutch plate.
Reply
Old Dec 16, 2007 | 08:54 PM
  #7  
vetteaddic's Avatar
vetteaddic
Burning Brakes
10 Year Member
 
Joined: Nov 2004
Posts: 899
Likes: 1
From: Kansas
Default

Even if the clutch is seized to the flywheel, it still should go into a gear
Reply
Old Dec 16, 2007 | 09:35 PM
  #8  
dave_roads's Avatar
dave_roads
Advanced
15 Year Member
 
Joined: Jul 2007
Posts: 75
Likes: 0
From: texas
Default

had a similar issue earlier this year. The guy above suggesting not using the starter is very correct. not only will it contaminate the system but cause alot wear on the flywheel ring gear and possibly ruin it. i came home every night from work for about 2 weeks and turned the crank nut by hand with a ratchet and the handle of my jack for an extension, all the while putting penetrating oil in each cylinder through the spark plug socket. after a time, i could feel it free up. then used the starter. once it fires up, change the oil pretty quick. but the lesson i learned was that i used the starter from the get go and toasted the ring gear. btw- my mechanic told me all the while this was going on that he uses atf fluid for this purpose??
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-1

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-2

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-3

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-4

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-5

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-6

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-7

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-8

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-9

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
Old Dec 16, 2007 | 09:39 PM
  #9  
Eddie 70's Avatar
Eddie 70
Race Director
Supporting Lifetime Gold
St. Jude 10 Year Donor
25 Year Member
Liked
Community Favorite
 
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Default

You might also try priming the oil pump and getting some oil circulated through the bearings before the next try. Then when you do try, give it a sharp tug or push in the direction of rotation.
Reply
Old Dec 17, 2007 | 07:50 AM
  #10  
77-L48's Avatar
77-L48
Racer
15 Year Member
 
Joined: Oct 2006
Posts: 388
Likes: 3
From: Guyton, (Savannah) Georgia
Default Another Suggestion

I agree with pulling the distributor and pumping the oil with a drill for a while. Just make sure that you mark the distributor at the intake manifold and where the rotor is on the distributor. I also agree with using P. B. Blaster in the cylinders for a few days also. Something you may try is to do is jack up the car, (using jack stands of course) get under it and carefully use a stout common screwdriver on the flywheel against the bellhousing and spin the engine that way. I have had some trouble with stipping the threads on the crank. It's not fun. Good luck.
Reply
Old Dec 17, 2007 | 09:27 AM
  #11  
moosie982's Avatar
moosie982
Safety Car
20 Year Member
 
Joined: Oct 2000
Posts: 3,547
Likes: 12
From: Carbondale Pa.
Default

Do they still sell "Marvel Mystery Oil",? thats what I used to use to free up stuck pistons/rings/cylinders. squirt some in the cylinders and let it soak as in all the other advice you've been getting, Good Luck. Peace,,,Moosie
Reply
Old Dec 17, 2007 | 09:58 AM
  #12  
stingr69's Avatar
stingr69
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2004
Posts: 7,477
Likes: 1,495
From: Little Rock AR
Default

I would use a few squirt cans of PB Blaster through the spark plug holes over the course of a few days. Then prime the oiling system. If you can turn it over a few times with the plugs out using a breaker bar aftert that, you are probably good to go.
Reply
Old Dec 17, 2007 | 11:15 AM
  #13  
BKbroiler's Avatar
BKbroiler
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
Default

You pulled the plugs to squirt oil in, did you reinstall them? If so, take them out for the hand cranking process.
Reply
Old Dec 17, 2007 | 11:26 AM
  #14  
lars's Avatar
lars
Tech Contributor
Supporting Lifetime Gold
25 Year Member
Conversation Starter
Photogenic
Top Answer: 3
 
Joined: Aug 1999
Posts: 14,377
Likes: 6,377
From: At my Bar drinking and wrenching in Lafayette Colorado
Default

There's no reason at all that an engine sitting indoors for 10 years will "freeze." Unless the engine was filled with water or sitting outside with rain getting into the intake, the rings won't freeze to the cylinder walls. Put it in neutral, pull all the plugs out, and turn it over with a breaker bar on the crank. Then put some fresh oil and gas in it and fire it up - no reason it shouldn't start and run. Watch for leaks...
Reply
Old Dec 17, 2007 | 02:39 PM
  #15  
halsted9's Avatar
halsted9
Thread Starter
Heel & Toe
10 Year Member
 
Joined: Dec 2007
Posts: 21
Likes: 0
Default

autozone sells both pb blaster and marvel mystery oil. Anybody know if one is better than the other?
Reply
Old Dec 17, 2007 | 03:25 PM
  #16  
SIXFOOTER's Avatar
SIXFOOTER
Le Mans Master
Supporting Lifetime Gold
10 Year Member
 
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Default

PB is the best stuff I have used for unsticking stuff.
Reply
Old Dec 17, 2007 | 03:46 PM
  #17  
enkeivette's Avatar
enkeivette
Melting Slicks
15 Year Member
 
Joined: Sep 2004
Posts: 2,412
Likes: 3
Default

Originally Posted by dave_roads
btw- my mechanic told me all the while this was going on that he uses atf fluid for this purpose??
Makes sense to me, ATF has a detergent in it. It cleans and lubricates.
Reply

Get notified of new replies

To Is my engine frozen?

Old Dec 17, 2007 | 03:55 PM
  #18  
bashcraft's Avatar
bashcraft
Le Mans Master
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
 
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Default

Originally Posted by lars
There's no reason at all that an engine sitting indoors for 10 years will "freeze." Unless the engine was filled with water or sitting outside with rain getting into the intake, the rings won't freeze to the cylinder walls. Put it in neutral, pull all the plugs out, and turn it over with a breaker bar on the crank. Then put some fresh oil and gas in it and fire it up - no reason it shouldn't start and run. Watch for leaks...
Get under it and turn the flywheel with a big screwdriver.
Reply
Old Dec 17, 2007 | 05:42 PM
  #19  
7T1vette's Avatar
7T1vette
Team Owner
15 Year Member
Community Builder
Community Influencer
Top Answer: 5
 
Joined: Jan 2006
Posts: 37,637
Likes: 3,117
From: Crossville TN
Default

After 10 years, you need to drain any gasoline [and water] from the gas tank; replace the rubber portion of the gas line; drain and replace the oil and filter; remove plugs and squirt PB Blaster in liberally; take carb off and clean it out; put in new fuel filter; new air filter; clean or replace plugs. It would be best to change out the radiator hoses and pulley belts...but you make that call--they can only break. Squirt a bit of gas into the carb and {if you've charged up the battery} give it a start. If it makes no effort to turn over, STOP!! Trying to make it start when there is excessive drag on the system will only burn out your starter. If it's in a bind, find the problem and fix it. I'll keep my fingers crossed for a first-time start!
Reply
Old Dec 18, 2007 | 02:27 PM
  #20  
halsted9's Avatar
halsted9
Thread Starter
Heel & Toe
10 Year Member
 
Joined: Dec 2007
Posts: 21
Likes: 0
Default

Originally Posted by bashcraft
Get under it and turn the flywheel with a big screwdriver.
Originally Posted by 7T1vette
After 10 years, you need to drain any gasoline [and water] from the gas tank; replace the rubber portion of the gas line; drain and replace the oil and filter; remove plugs and squirt PB Blaster in liberally; take carb off and clean it out; put in new fuel filter; new air filter; clean or replace plugs. It would be best to change out the radiator hoses and pulley belts...but you make that call--they can only break. Squirt a bit of gas into the carb and {if you've charged up the battery} give it a start. If it makes no effort to turn over, STOP!! Trying to make it start when there is excessive drag on the system will only burn out your starter. If it's in a bind, find the problem and fix it. I'll keep my fingers crossed for a first-time start!
Here's update; but I think I have bigger problem. I put pb blaster in cylinders and it's soaking. Thought I would try to get to flywheel for turning( I have lift) crankshaft since I'm worried about stripping crank nut in front. Started to investigate getting tranny off to remove bellhousing, but drive shaft seems to be locked also. Cannot get to Ujoint bolts to disengage driveshaft in order to slide tranny back. Am I going to have to pull engine out If I can't free engine from front?
Reply



All times are GMT -4. The time now is 10:59 AM.

story-0
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-1
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-2
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-3
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-4
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-5
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-6
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-7
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-8
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-9
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE