PDA

View Full Version : OK I have a real quick question for the engine builder types

Roothawg
12-03-2003, 09:46 PM
Just tore into the Fly and I am gonna put the timing chain back to where it is at tdc. I have one of those dang 3 keyway jobs with all kinds of Egyptian markings.

What I want to know is what the standard tdc symbol is. I have a triangle for you light in the loafers types, a circle for the circle jerks and a square for all the Fly's fan club. I appreciate your support and hope I can help the ball club.
HotRod31
12-03-2003, 09:56 PM
Not sure of the shape (prob. circle)but it is the one in the middle, the others are 4 deg. advance & 4 deg. retard.

Later, Mark
four-thirteen
12-03-2003, 10:10 PM
on my chrysler powered crap, the straight up(tdc) mark is the square job. the circle and the triangle are the offset ones.

i'm one of those pink triangle circle jerk types, but you want to start with the square and see where it gets you. i don't know who designed those pieces of crap, but the 4 degree increments they have suck. the cam is never off by that amount, and you always wind up using offset bushings anyway...
dave
drgnwgn289
12-03-2003, 10:58 PM
seems to me its the circle one....
Roothawg
12-03-2003, 11:05 PM
I threw away the paper after we stabbed the cam.....I believe it was a Cloye's set.
flying clutchman
12-03-2003, 11:21 PM
the circle one or the "dot" as the books refer to it
BELLM
12-03-2003, 11:22 PM
I am looking at the multi-keyway instruction came with the Cloyes I just put in SBC. square cut hole is 4 degree retard, round top hole is O.E.M. setting, triangle shaped cut is 4 degree advance. Good luck brutha! http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif
burger
12-04-2003, 01:13 PM
Ok, so now that we've determined that the circle setting is 0°, which keyway corresponds to the circle?



Ed
porknbeaner
12-04-2003, 01:25 PM
Depends on who made the chain, n gears.

If ya wanna run it strait up choose the keyway in the middle.
Hot Rod To Hell
12-04-2003, 02:21 PM
There shoud be a "circle" right next to one of the keyways, then you just line up the "dots" like normal.
Blownolds
12-05-2003, 05:35 AM
Never: trust those marks
Always: degree the cam

Sometimes those marks are off by as many as 4 degrees.
SKR8PN
12-05-2003, 05:51 AM
[ QUOTE ]
Never: trust those marks
Always: degree the cam

Sometimes those marks are off by as many as 4 degrees.

[/ QUOTE ]

Specially if you are using a high lift cam, are using high compression pistons or the block/heads have been milled.
Smiley faces are cute,but not the ones that valves leave in the piston domes......