Top Dead Center - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 10-17-2003, 02:26 PM
pintoperformance's Avatar
New Member
 
Last photo:
Join Date: Oct 2003
Location: TEXAS
Age: 71
Posts: 20
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Top Dead Center

How can u tell when engine is at Top Dead Center #1 Piston Compression Stroke?? The Engine is a 1978 Ford Pinto 2300 ovrhead Cam.

I am having trouble getting the engine to start-- I have tried numerous suggestions but it will still not start and seems to be getting hard for it to even turn over........

Any hel would really be appreciated

tks

Mike

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-17-2003, 02:41 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,250
Wiki Edits: 9

Thanks: 105
Thanked 133 Times in 124 Posts
Mike, pull the plugs, put your thumb over the #1 plug hole while someone turns the engine over slowly BY HAND. When you feel pressure escaping from the cylinder, start watching the pointer and TDC mark on your balancer or wherever the reference mark is on your Pinto. You're coming up on the compression stroke and when the pointer and mark are aligned you're very close to TDC, unless you've done something to the cam/crank timing gears or chain. When you're there, trace the #1 plug wire to the distributor cap, mark the side of the housing where the #1 tower is, pull the cap and see if your rotor tip is pointed at or near it. If it's not, chances are the distributor needs to be lifted, rotated and set back in to align things. Put it all back together and hit the key, leaving the distributor snug but movable to make a quick timing adjustment as soon as it starts to keep it running until you can do an accurate timing set. You may have to rotate the distributor a small amount back and forth to get it fired, but not much.

Uuummmm, don't lean over the carb, if the timing is far off you could singe things.....

Good Luck, Larry
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-17-2003, 05:16 PM
Jmark's Avatar
Registered User
 
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 61
Posts: 4,824
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
The ford 2300 is also famous for stripping the rubber timing belt. Easy to change too. I used to re-install them with the cam one full tooth advanced, everyone loved how they ran!!!
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-17-2003, 07:46 PM
pintoperformance's Avatar
New Member
 
Last photo:
Join Date: Oct 2003
Location: TEXAS
Age: 71
Posts: 20
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks guys for the information, but sorry to say this Pinto Engine is missing the cam cover and pointer--so how do I get around that, and the one tooth advance on the cam how do you do that..

Mike
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-17-2003, 08:31 PM
NorthStar's Avatar
Member
 
Last photo:
Join Date: Feb 2003
Location: Minnesota
Age: 51
Posts: 847
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Cylinders 1 and 4 are companion cylinders.
Remove timing belt, pull the valve cover, rotate the cam with a wrench until number 4 is on overlap then number 1 will be on compression, rotate crank till 1 and 4 are at TDC, pull distributor cap and get rotor pointing to number 1.
Reinstall the belt, put everything else back together, and start it up.


If you must rotate the crank of assembled engine always turn crank in direction of normal rotation. Going backwards is a good way to strip teeth off belt. Also much easier to turn over when plugs are out.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-17-2003, 08:32 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,250
Wiki Edits: 9

Thanks: 105
Thanked 133 Times in 124 Posts
Well, with the timing cover off you should be able to see the cam and crank alignment marks. I don't know about the Pinto but most have a dimple or other mark on each that needs to line up. Also, some line up one at 6 o'clock the other at 12, some are both at 6 but whatever you have, they must be in line with each other. Do the thumb thing and when you start to feel the pressure escaping look at your marks. You know you're coming up on TDC on the compression stroke so keep turning the engine until they align and you're there.

If you want to be really back yard you can turn it until you feel the pressure then insert a thin shank screwdriver or something similar, let the piston push it up and when it stops moving up note the location of the timing gear, keep turning until it starts to move down slightly, then turn the other direction until you think you're about in the middle of the slack movement. Make sure whatever you put in the spark plug hole doesn't bind or jam in the cylinder! That should get you close enough to try a start moving the distributor a little until it fires.

This should get lots of laughs from some of the guys, but I doubt you have a positive stop tool you could put in the hole or a degree wheel that you'd also need to compute TDC correctly, and it's tough with the head on anyway.

As far as advancing the cam, you just remove the belt from the cam pulley and rotate it in the advance direction one tooth and reinstall the belt. Jmark can tell you the specifics for your car, most after market timing sets, the ones with gears and chains, have optional key-ways to advance or retard the cam, which moves the power band up or down the rpm range.

Have at it - Larry
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 09:35 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.