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Re: Timing marks not lining up
[Re: CMcAllister]
#2487326
04/24/18 03:11 PM
04/24/18 03:11 PM
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Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
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If the balancer isn't messed up now it probably will be after a few outings. I put one of those on a s.b. mopar, and in a month the mark was about 90* off. I put an ATI balancer and no more problem. I would only use an ATI, but for reference in case someone drags one in here, who's grenade of a damper does that? I had a BHJ damper on a 440 years ago that slipped the outer ring about an inch. Took it off and sent it back to BHJ...they fixed/replaced it but no one there would talk to me afterwards about an explanation. Been using ATI dampers since, w/ the exception of one Fluidamper that has also been a good piece.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Timing marks not lining up
[Re: dogdays]
#2487392
04/24/18 05:41 PM
04/24/18 05:41 PM
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Joined: Oct 2004
Posts: 3,097
back in Georgia
dthemi
master
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master
Joined: Oct 2004
Posts: 3,097
back in Georgia
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Back to basics, dudes!
All you really need is a piston stop, a pencil and a tape measure. You do not need to have degreed in the cam. That's a topic for another instruction.
Install the piston stop Turn the crank until piston runs into stop. With the pencil mark where the pointer is pointing. Now turn the engine around the other way until you run into the piston stop. Mark where the pointer is pointing. Now use the tape measure to measure between the two marks.
Calculate exactly half the distance. The halfway point between your two marks is TDC. I'm hoping your Zero mark is halfway between those two marks.
Piston stop? Strap metal, three holes, three bolts and two nuts. You can make it for very little $. No need for anything fancier than this.
R. This^^^^^can't degree the cam without first know this...
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Re: Timing marks not lining up
[Re: an8sec70cuda]
#2487414
04/24/18 06:26 PM
04/24/18 06:26 PM
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Joined: Jan 2003
Posts: 25,796
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,796
Rio Linda, CA
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There are a few ways to do this, all work equally well, but saying one isn't right is foolish.
Perhaps, but the positive stop eliminates the possibility of inaccurate readings due to piston rock.
The INTERNET, the MISinformation superhighway
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Re: Timing marks not lining up
[Re: buildanother]
#2487565
04/24/18 11:15 PM
04/24/18 11:15 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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if a head or heads are already on, set the dampener slit at 15BTDC & screw the TDC tool into the #1 or #6 plug hole till it contacts the piston snug, then turn the crank CCW till it contacts the stop again & if no slip/bad machining of dampener (somewhat rare) or even crank keyway machined off (rare tho) & yes it is at 1:30, you want the slit to be at 15 ATDC. repeat one time to confirm it is equidistant, same # of degrees on either side of "zero" on the tab . A degree or less off is acceptable. this will confirm zero on the dampener/timing tab matches the actual TDC position of the piston.
live every 24 hour block of time like it's your last day on earth
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