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

Best Method to Crank for TDC- see Pic

Thread Tools
 
Search this Thread
 
Old 05-20-2005, 08:17 PM
  #1  
79vetter
Drifting
Thread Starter
 
79vetter's Avatar
 
Member Since: Feb 2005
Location: Richardson Tx.
Posts: 1,583
Likes: 0
Received 3 Likes on 2 Posts

Default Best Method to Crank for TDC- see Pic

I've got a socket wrench on the middle of the pulley at the bottom and a pipe on the socket wrench helping me out with leverage but when I manage to turn the pulley it reverts back to its original position and so I am not making any progress Not much room down there...
Is there a better method of turning the crank? Here's a pic of how I am doing it:
http://www.photohost.org/gallery/sho...cat/500/page/1
Old 05-20-2005, 08:30 PM
  #2  
MotorHead
Race Director
 
MotorHead's Avatar
 
Member Since: Apr 2000
Location: Who says "Nothing is impossible" ? I've been doing nothing for years.
Posts: 17,569
Received 156 Likes on 126 Posts

Default

Take the plugs out and take the fan off life gets much easier
Old 05-20-2005, 08:57 PM
  #3  
Aflac
Race Director
 
Aflac's Avatar
 
Member Since: Oct 2002
Location: Smalltownville Michigan
Posts: 12,065
Received 2 Likes on 2 Posts
Cruise-In 5, 6 & 10 Veteran
St. Jude Donor '09

Default

Originally Posted by MotorHead
Take the plugs out and take the fan off life gets much easier
got the scratches on my forearms to prove it
Old 05-20-2005, 09:20 PM
  #4  
79vetter
Drifting
Thread Starter
 
79vetter's Avatar
 
Member Since: Feb 2005
Location: Richardson Tx.
Posts: 1,583
Likes: 0
Received 3 Likes on 2 Posts

Default

Yea, I've already got them too
I've got the plugs out. Do I need to take the fan and shroud out?
I see 4 nuts on the on the inside of the fan and the 4 up against the pulley for the water pump....
Old 05-20-2005, 09:27 PM
  #5  
bobs77vet
Race Director
 
bobs77vet's Avatar
 
Member Since: Sep 2004
Location: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Posts: 11,863
Received 255 Likes on 225 Posts

Default

you should be ok thats now i turn mine, except i use a long handled ratchet and a deep socket....
Old 05-20-2005, 10:12 PM
  #6  
desi
Melting Slicks
 
desi's Avatar
 
Member Since: Sep 2002
Location: Engineers do it better.
Posts: 2,783
Likes: 0
Received 2 Likes on 2 Posts
Default

I take the fan and the plugs out. But I use a 1" drive rachet....no problem. Get a bigger handle.
Old 05-20-2005, 10:37 PM
  #7  
Jughead
Senior Member since 1492
Support Corvetteforum!
 
Jughead's Avatar
 
Member Since: Aug 2000
Location: Just because I'm paranoid doesn't mean people aren't out to get me...
Posts: 86,419
Received 152 Likes on 118 Posts
St. Jude Donor '09

Default

I bought a crank turner from Jeg's. Mounts via the balancer bolts and stays on there until I nee it next. I also have a long (18") flex head racket whish is about as long as a breaker bar to make life a little easier.

Old 05-20-2005, 11:36 PM
  #8  
yellow71
Instructor
 
yellow71's Avatar
 
Member Since: Oct 2004
Posts: 124
Likes: 0
Received 1 Like on 1 Post
Default

I bought mine from Eastwood.
Old 05-21-2005, 01:03 AM
  #9  
john1977
Instructor
 
john1977's Avatar
 
Member Since: Jul 2003
Location: zanesville ohio
Posts: 213
Likes: 0
Received 0 Likes on 0 Posts
Default

I use a rubber plug with a string attached & tied then bump the starter until the plug blows then I know it in the comp. stroke.
Old 05-21-2005, 06:19 AM
  #10  
johnt365
Drifting
 
johnt365's Avatar
 
Member Since: Dec 2004
Location: Austin Texas
Posts: 1,700
Received 33 Likes on 21 Posts

Default

Originally Posted by john1977
I use a rubber plug with a string attached & tied then bump the starter until the plug blows then I know it in the comp. stroke.
depending on your situation, this may be the easiest route. i did a dist. swap recently.
left all plugs in accept #1

disconnected power to distributor.

i used a remote "bump starter button"

with my left thumb covering the #1 plug hole ,my right thumb tapped the starter button until the compression stroke FORCED air out of the hole and my thumb off the hole AND the timing mark was on the tab

it took a couple of times around to get it to stop right on the tab. that got it close enough to start the motor.

this is not always the best method. However, it looks like you have a complete motor in the car. if the heads are off, well... nevermind
Old 05-21-2005, 07:24 AM
  #11  
SteveG75
Le Mans Master

 
SteveG75's Avatar
 
Member Since: Jun 2000
Location: FL
Posts: 9,758
Received 527 Likes on 356 Posts

Default

Originally Posted by Jughead
I bought a crank turner from Jeg's. Mounts via the balancer bolts and stays on there until I nee it next. I also have a long (18") flex head racket whish is about as long as a breaker bar to make life a little easier.

Like what I use except I got an ARP balncer bolt with a 1/2" drive socket.

ARP-134-2503
Old 05-21-2005, 10:20 AM
  #12  
79vetter
Drifting
Thread Starter
 
79vetter's Avatar
 
Member Since: Feb 2005
Location: Richardson Tx.
Posts: 1,583
Likes: 0
Received 3 Likes on 2 Posts

Default

Ok, I went and bought a long ratchet and deep socket and still no dice.
Set me straight- This does turn clockwise when facing the front of the car?
When I pull down on the ratchet and move the pulley downward, it springs back upward when i release tension...Its almost further back from when I started...
I do still have the fan on - plugs out...
Old 05-21-2005, 11:37 AM
  #13  
79vetter
Drifting
Thread Starter
 
79vetter's Avatar
 
Member Since: Feb 2005
Location: Richardson Tx.
Posts: 1,583
Likes: 0
Received 3 Likes on 2 Posts

Default

Now I managed to round off the head of the bolt in the middle of the pulley.

Is there another method of doing this like bumping the starter?
If so can you elaborate?
Old 05-21-2005, 11:46 AM
  #14  
theoUK
Pro
 
theoUK's Avatar
 
Member Since: May 2003
Location: Nottingham
Posts: 601
Likes: 0
Received 0 Likes on 0 Posts

Default

Are you going at this from the top? I assume so from your photo...
Yes, it should turn c/w from front

If you're really struggling, try this - turn the engine as far as you can on the ratchet, then hold it there as you wedge a BLUNT object between one of the pulleys and its belt. This will bite and stop the engine from turning back under the compression pressure - then you can wind the ratchet back for another turn, and whatever you wedged in there will loosen off..

Before anyone shoots this idea down in flames , I should stress that you use something wide enough to spread the pressure over the pulley in question, thereby not bending it. It doesn't even need to be a very rigid object, perhaps a piece of narrow plastic pipe. The tendency of the engine to move back will not be so huge as to cause any damage to the belt/pulley as long you don't decide to wedge the pulley with anything sharp or hard...
good luck!
Old 05-21-2005, 11:50 AM
  #15  
theoUK
Pro
 
theoUK's Avatar
 
Member Since: May 2003
Location: Nottingham
Posts: 601
Likes: 0
Received 0 Likes on 0 Posts

Default

ok, just posted this a little late, I actually started writing between your last two posts... Seems this job is being a bit of a pig. You have the plugs out, yeah? Should be relatively easy now, wonder why it's still tough?
Use a 6-sided socket on the pulley bolt, and make sure it stays on parallel all the time. That might get you out of the rounded head problem...
Old 05-21-2005, 12:20 PM
  #16  
Bob in Dallas
Advanced
Support Corvetteforum!
 
Bob in Dallas's Avatar
 
Member Since: Aug 2002
Location: Riockwall Texas
Posts: 84
Likes: 0
Received 0 Likes on 0 Posts
Default

If you have the plugs out, there is no compression to make it turn back. Something else is wrong. The rubber plug in the spark plug hole and bumping the starter until it pops out is a good way to get close. Then turn engine by hand to set to proper timing setting on crank pulley.

You should be able to easily turn the engine with the plugs out, unless it is in gear (manual trans) or there is a mechanical drag in the engine. Even a mechanical problem should not make it "bounce back". You should not need anywhere near the force required to "round off" the bolt head.

Look closely for the resistance to turning. Something is dragging or perhaps an accessory is holding the engine from turning (i.e., the A/C Compressor on)

Good Luck.
Old 05-21-2005, 12:52 PM
  #17  
Jughead
Senior Member since 1492
Support Corvetteforum!
 
Jughead's Avatar
 
Member Since: Aug 2000
Location: Just because I'm paranoid doesn't mean people aren't out to get me...
Posts: 86,419
Received 152 Likes on 118 Posts
St. Jude Donor '09

Default

It'll be easier to turn with the belts off or loose.

Get notified of new replies

To Best Method to Crank for TDC- see Pic

Old 05-21-2005, 12:54 PM
  #18  
BigBlockk
Drifting
 
BigBlockk's Avatar
 
Member Since: Sep 2004
Location: North Bend Ohio
Posts: 1,959
Likes: 0
Received 1 Like on 1 Post

Default

Does this car have a manual transmission? If so you do have it in neutral don't you?

BigBlockk

Later.....
Old 05-21-2005, 05:41 PM
  #19  
79vetter
Drifting
Thread Starter
 
79vetter's Avatar
 
Member Since: Feb 2005
Location: Richardson Tx.
Posts: 1,583
Likes: 0
Received 3 Likes on 2 Posts

Default

I decided to put a kleenex into the #1 hole. I barely bumped the starter until the tissue popped out. The line on the balancer was then within the gauge. I then took out the distributor and put it back in such that the rotor was pointing to the #1 spark terminal on the Cap.
It wouldn't start--I rotated the distributor a little both directions and kept trying to start but it would not. Finally this last time a Flame about 6 inches tall shot out the top of the Carb...scared to touch it now,,,

Last edited by 79vetter; 05-21-2005 at 05:57 PM.
Old 05-21-2005, 07:10 PM
  #20  
Hammerhead Fred
Melting Slicks
 
Hammerhead Fred's Avatar
 
Member Since: Mar 2005
Location: Midlothian VA
Posts: 2,012
Received 264 Likes on 225 Posts

Default

Is the car in neutral?


Quick Reply: Best Method to Crank for TDC- see Pic



All times are GMT -4. The time now is 05:50 AM.