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> Cant loosen valve, on rebuilt engine
ericoneal
post Dec 22 2014, 11:53 AM
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To clarify, the valves have been adjusted. I think the pushrod was not set in the lifter or something because taking the assembly off and putting it back on gave me plenty of play to do the adjustment.
We know the dizzy is 90 degrees off, we found TDC, the builder is coming over this weekend.
Thanks all
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r_towle
post Dec 22 2014, 12:14 PM
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make sure after you adjust each valve that you can still turn the push rod by hand..
there is enough room to get your finder in there and spin the pushrod.

This will tell you if it is seated properly.

Sounds like that was your issue.

rich
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Bulldog9
post Dec 22 2014, 03:28 PM
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FWIW, if the 'builder' made such a mistake as not aligning the pushrod and diddnt catch it before he delivered it to you, AND set TDC 90% off, I wouldnt let that guy near my motor again.....
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ThePaintedMan
post Dec 22 2014, 09:16 PM
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That's a good find, and it does happen, but as Steve says, if the motor was out, he should have caught it before sending it back to you. Also, the dizzy being 90 degrees off is very common, especially if you're using an aftermarket distributor. I know that the SVDA on my car is not clocked the same way as the factory dizzy, so my plug wires all are reordered to match the true TDC. Good job on getting it figured out!

The only other thing I can recommend is be SURE that you have the pushrod rube retaining wire seated correctly. It's almost impossible to see if it's in correctly without a mirror and if it's rubbing on a pushrod, it'll eat a grove into it VERY quickly - ask me how I know.
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ericoneal
post Dec 23 2014, 12:15 PM
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Thanks. He did adjust the valves before giving it back to me, but I wanted to adjust them to be sure which is how I found the problem. If it really was an unseated pushrod, which Im not 100% sure of, maybe it happened in transport? Seems like a long shot.
I made sure to check the retaining wire, it is good.
Also, pretty sure my dizzy is not stock since the previous owner megasquirted the car, which may be why he set it off. That should be an easy fix now.
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r_towle
post Dec 23 2014, 03:15 PM
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QUOTE(ericoneal @ Dec 23 2014, 01:15 PM) *

Thanks. He did adjust the valves before giving it back to me, but I wanted to adjust them to be sure which is how I found the problem. If it really was an unseated pushrod, which Im not 100% sure of, maybe it happened in transport? Seems like a long shot.
I made sure to check the retaining wire, it is good.
Also, pretty sure my dizzy is not stock since the previous owner megasquirted the car, which may be why he set it off. That should be an easy fix now.

it did not fall out of the lifter in transport.
Its a good 1/4 inch difference.

It was put in wrong, adjusted wrong.

rich
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stugray
post Dec 23 2014, 07:54 PM
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The most logical answer is that the mechanic set the valves, realized he forgot the retainer spring, took the rockers off to install the spring, then put the rockers back on (with one "dropped" pushrod) then chose to not recheck the valve clearance.
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Cap'n Krusty
post Dec 23 2014, 08:00 PM
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Excuse me, but why would you ever remove the rocker assemblies in order to install the pr tube retaining spring?

The Cap'n
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HAM Inc
post Dec 23 2014, 08:59 PM
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QUOTE(Cap'n Krusty @ Dec 23 2014, 07:00 PM) *

Excuse me, but why would you ever remove the rocker assemblies in order to install the pr tube retaining spring?

The Cap'n

Yep. That's just bass ackwards.
I'm not even sure how you would put the wire in before the rockers.
Happy Festivus!
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stugray
post Dec 24 2014, 12:30 PM
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QUOTE(Cap'n Krusty @ Dec 23 2014, 07:00 PM) *

Excuse me, but why would you ever remove the rocker assemblies in order to install the pr tube retaining spring?

The Cap'n



QUOTE(HAM Inc @ Dec 23 2014, 07:59 PM) *

Yep. That's just bass ackwards.
I'm not even sure how you would put the wire in before the rockers.
Happy Festivus!


At least the last couple of times I have done it, I put the spring under the pushrods then as you put the rockers on, you put the tabs on the spring in the slots on the rocker bases.
Then I tightened the rockers down, then pulled the pushrod retention tabs up into place with a dental hook.

When I didnt put the spring in before the rockers, it seemed like you would need to bend the spring to get it down far enough and in the slots on the rocker bases.
It also holds the pushrods up so they align with the rocker caps easier.

But I guess there is wrong way to do it so I'll stop doing that.....
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