timing and time again, timing question |
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timing and time again, timing question |
doobie123 |
Feb 16 2023, 06:10 PM
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#1
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Member Group: Members Posts: 86 Joined: 8-July 22 From: tucson Member No.: 26,683 Region Association: Southwest Region |
hi ya'll
let me just say up front, i'm pretty new to this so if my questions seem obvious, sorry so i'm working on a 75 with a 2.0 and 5 spd. i have the engine and trans out to do the clutch and cleanup the bay etc. before i put everything back i want to set the valves. i brought #1 piston to TDC. i did this with the use of a scope and since the engine is out, i can see the piston. when i did this, i took the cap off the distributor, and to my untrained eye, it looks like it's 180 degrees out but, i'm not sure because, well, i'm green. so my question is, is it 180 out? if so, can i just pull the distributor and rotate it where it need to be? if so, am i moving the line on the case to match the rotor or the rotor to match the line? i guess i should also say, i bought a non running car. i had it running before pulling the drive train but just for a bit and only drove it up and down the block so i really don't know the history. thanks for any help Attached thumbnail(s) |
Jack Standz |
Feb 16 2023, 09:27 PM
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#2
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Member Group: Members Posts: 433 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None |
"i brought #1 piston to TDC. i did this with the use of a scope"
The piston will be at TDC twice during its 4-stroke cyle. As already mentioned, it looks like you're on the wrong stroke for TDC on the #1 piston's compression stroke. Use the timing mark on the fan (if it's not there, put a mark at TDC for #1 piston on its compression stroke) by unscrewing the plastic plug in the fan housing or some flywheels have it marked so it shows as TDC when the "0" mark is even with parting line at the top case. When you have the motor at TDC #1 on compression stroke, the distributor rotor should be pointing at that mark on the distributor rim. If not, take steps to align your distributor like the drawing posted above. Best wishes with the new-to-you 914! |
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