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Author
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Topic: finding tdc with head removed
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trashline
Gearhead Posts: 2230
From: Levittown, Pa
Registered: Dec 2003
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posted 06-27-2005 10:43 AM
 
in lu of my rescent blown head gasket, i set it to tdc before i pulled the head, but i moved the crank to see all the cylinder walls. is it possible or can i get it close? it is when number one is at the top of the cylinder right when it goes no further. or should i just wait till i put the head back on and do the finger blow trick?the head is a non interferiance so i dont have to worry about hitting a valve. thanks------------------
88 thunderbird TC 2.3L
66 mustang 200ci 3 speed
68 Fairlane 289 w/ auto
79 f150 300 3 onda tree
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 06-27-2005 10:54 AM
that should get you very close. also your timing pointer will be pointing directly at "0" good luck------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.25 @93mph 1/8
1.54 60ft 50 % of the fun dragracing is meeting people who will give you the shirt off their back to wipe the grease off your hands.
M&M member #839 http://perfectrun.com/ipw-web/bulletin/bb/images/smiles/icon_5usaribbon.gif
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trashline
Gearhead Posts: 2230
From: Levittown, Pa
Registered: Dec 2003
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posted 06-27-2005 10:56 AM
but see thats the problem. before i removed the head i did the finger trick and the timing pointer was stright up. i remove the head and move number one to the top and the pointer was about 20 degrees off------------------
88 thunderbird TC 2.3L
66 mustang 200ci 3 speed
68 Fairlane 289 w/ auto
79 f150 300 3 onda tree
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74merc
Gearhead Posts: 1322
From: Demopolis AL
Registered: Jun 99
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posted 06-27-2005 11:47 PM
No heads on the engine right?
put number one piston all the way to the top with both lifters for number one down.
Absolute top dead center.nevermind, 2.3 right? uh... I'll pass this one off. [This message has been edited by 74merc (edited 06-27-2005).]
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mizry
Journeyman Posts: 97
From: ca
Registered: Sep 2004
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posted 06-28-2005 01:16 AM
if its a over head cam anything then tdc is where number one piston is all the way up. you may need to the balancer and pointer to get exact.
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trashline
Gearhead Posts: 2230
From: Levittown, Pa
Registered: Dec 2003
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posted 06-28-2005 08:15 AM
i think the mark on the balancer is off but i dont have the timing cover so i wouldnt know------------------
88 thunderbird TC 2.3L
66 mustang 200ci 3 speed
68 Fairlane 289 w/ auto
79 f150 300 3 onda tree
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 06-28-2005 08:30 AM
if the #1 piston is all the way up and both lifters are down and the marker is not on "0" you have one of 2 problems. either the timing chain/belt has jumped a notch or the balancer has slipped within its self.------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.25 @93mph 1/8
1.54 60ft 50 % of the fun dragracing is meeting people who will give you the shirt off their back to wipe the grease off your hands.
M&M member #839 http://perfectrun.com/ipw-web/bulletin/bb/images/smiles/icon_5usaribbon.gif
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mustangboy
Gearhead Posts: 1343
From: Ont, Canada
Registered: Mar 2002
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posted 06-28-2005 09:31 AM
Also don't forget the piston sits at top dead center for a bit while the crankshaft stroke goes over the top and starts back down.Thats why its good to have a balancer and timer on the engine to get it dead on.If you suspect the balancer is off you can make a piston stop out of a piece of metal bolted across the cylinder with the head off and a bolt in the middle to contact the piston.Rotate the engine until it contacts the stop and make a mark on the balancer.Rotate the engine the other way until it contacts the piston and make a mark on the balancer.True TDC should be half way between these two marks on the balancer which is hopefully TDC on the balancer.------------------
1968 mustang j-code sprint.13.69@101 306cu.in, stock ported heads,weiand exellerator,650 holley DP,hedman hedders,comp 292 Magnum cam,4-speed,8 inch 4.11 detroit locker...................................................................1966 mustang coupe project.289 4 speed,3.20 rear http://mustangsandmore.50megs.com/MembersPics/mustangboy.html
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