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Old 09-19-2017, 07:01 PM   #21
Jon
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^ Sh*t, I forgot this was the thread where he had zero compression (I'm not with it at all today).
Near the beginning of the thread I mentioned checking voltage, did you ever do that?


Seems like there may be a few issues you're dealing with (electrically) regardless of the zero compression issue.
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Old 09-19-2017, 08:02 PM   #22
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Are you 100% sure you had #1 TDC before bolting the head on? Just had a fellow member who rebuilt the motor and it didn't start. He looked at all his timing marks again and found that he had #2 &3 at TDC.
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Old 09-20-2017, 07:07 AM   #23
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Quote:
Originally Posted by sonikaccord View Post
Yep, zero compression. Your timing is most likely off. Can you get a pic or vid of your cam gear and crank(or flywheel, which ever one has the crank TDC mark)?

As far as that increase in tone, that usually happens when the voltage drops on a timer IC. If your fuel pump priming is making the batt voltage drop that much, then you need to check your battery as well as your grounds.

Edit: A few other things I noticed, all of your door indicators came on and it looks like your cluster dimmed a little. Your radio restarted when going from ACC to ON. What happens if you turn your lights, rear defrost, fan on high? Or just throw a multimeter on your battery.
yeah i can definitely get all the marks in a vid for you.
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Old 09-21-2017, 11:07 AM   #24
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Timing marks

https://youtu.be/hZn9S0hZUKI
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Old 09-21-2017, 07:49 PM   #25
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Meter setting should be volts DC. I was thinking how did you get 27 volts from a 12v battery?? Then I saw the meter.

Second thing...I think someone else mentioned it. Your crank could be 360 degrees out since it spins 2 times for every one time of the camshaft and you could be lined up on that second half. This is easy to figure out:

Set your engine to the current TDC
Remove spark plug number 1
Place a screwdriver or stick down the spark plug tube
Rotate engine
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Old 09-21-2017, 08:16 PM   #26
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Quote:
Originally Posted by sonikaccord View Post
Meter setting should be volts DC. I was thinking how did you get 27 volts from a 12v battery?? Then I saw the meter.

Second thing...I think someone else mentioned it. Your crank could be 360 degrees out since it spins 2 times for every one time of the camshaft and you could be lined up on that second half. This is easy to figure out:

Set your engine to the current TDC
Remove spark plug number 1
Place a screwdriver or stick down the spark plug tube
Rotate engine
lol yeah i was half a sleep still lol when i checked the V lol but ill check cyl #1 tomorrow morning
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Old 09-22-2017, 12:26 PM   #27
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Cylinder position

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Old 09-22-2017, 12:27 PM   #28
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bat

battery was at 12.5v
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Old 09-22-2017, 04:04 PM   #29
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Batt seems OK with no load on it, but we'll focus on the compression issue right now.

I meant to add one more thing after the screwdriver:
Watch your valves to make sure they make sense. (I.e. the intake valves are closing on the up stroke, opening on the down, etc.)
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Old 09-23-2017, 03:37 PM   #30
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valve movement

https://youtu.be/0TdbIT-0uwU
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Old 09-25-2017, 10:46 PM   #31
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I've been kind of off this thread for a few days, been busy.

Starting to think simple fixes that may have been overlooked.
Are all your spark plugs torqued down? All that compression could be slipping past un-torqued spark plugs.

Are you sure you have a compression tester that works? It sounds like you're engine has no compression in the video, so I doubt this but it never hurts to check.


Have you checked your rotor's position when it's on TDC, just want to make sure it's all lined up?
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Old 09-26-2017, 04:11 PM   #32
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Quote:
Originally Posted by Jon View Post
I've been kind of off this thread for a few days, been busy.

Starting to think simple fixes that may have been overlooked.
Are all your spark plugs torqued down? All that compression could be slipping past un-torqued spark plugs.

Are you sure you have a compression tester that works? It sounds like you're engine has no compression in the video, so I doubt this but it never hurts to check.


Have you checked your rotor's position when it's on TDC, just want to make sure it's all lined up?
i have one but it don't work it don't hold the air in it
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Old 09-29-2017, 03:26 PM   #33
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Quote:
Originally Posted by Jon View Post
I've been kind of off this thread for a few days, been busy.

Starting to think simple fixes that may have been overlooked.
Are all your spark plugs torqued down? All that compression could be slipping past un-torqued spark plugs.

Are you sure you have a compression tester that works? It sounds like you're engine has no compression in the video, so I doubt this but it never hurts to check.


Have you checked your rotor's position when it's on TDC, just want to make sure it's all lined up?
The rotor? and yes spark plugs have been torqued down
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Old 09-29-2017, 08:14 PM   #34
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I missed this post, sorry. The movement looks good. Was the number 1 piston in sync with the intake and exhaust valves?
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Old 09-29-2017, 08:29 PM   #35
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The rotor?...
The rotor, as in distributor rotor (sorry I wasn't clear).
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Old 09-29-2017, 10:01 PM   #36
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Commando, you said you rebuilt the motor. Exactly how far did you have it disassembled? What operations did you perform?

If you were doing anything with the pistons, did you make sure and stagger your rings? If you lined them up, compression will go past them into the crankcase.
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Old 10-01-2017, 08:26 PM   #37
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Commando, you said you rebuilt the motor. Exactly how far did you have it disassembled? What operations did you perform?

If you were doing anything with the pistons, did you make sure and stagger your rings? If you lined them up, compression will go past them into the crankcase.
just all head work and new valves and stem seals
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Old 10-05-2017, 07:27 AM   #38
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Quote:
Originally Posted by sonikaccord View Post
I missed this post, sorry. The movement looks good. Was the number 1 piston in sync with the intake and exhaust valves?
Commando, you never answered this question. In the video, you didn't mention if you'd set the #1 piston to TDC and where your cam was positioned at that point. The word "UP" on the cam gear should be facing up when at TDC.
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Old 10-06-2017, 05:10 PM   #39
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Commando, you never answered this question. In the video, you didn't mention if you'd set the #1 piston to TDC and where your cam was positioned at that point. The word "UP" on the cam gear should be facing up when at TDC.
https://youtu.be/_nrs0bJcjs0
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Old 10-06-2017, 06:07 PM   #40
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so how it look?
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