Rebuild, replace or swap moms 510 carb/engine?

Engine, Transmission and related drivetrain.
510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 08 Apr 2019 21:06

O shoot here is the attachment
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James
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by James » 08 Apr 2019 21:37

The points are probably a major point of your troubles. Get that and the timing sorted and then mess with the carb.
While I agree with Mike on the NGK - I have run champions and they work well.
Where are you located exactly? You look like you are well on your way to getting this sorted. If you need additional tuning help - I'm in laguna beach - and occasionally head to Glendale.
Finished is better than perfect......

510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 09 Apr 2019 05:40

Thank you James! I’m in the city or Azusa, just off the 210 freeway and Azusa Ave. yeah I hope I get this running right. Whenever I’m running it and it’s running fine, and the bogging hits out of nowhere, man it’s such a bummer. I have to put flashers on and takes me forever to pull over to the side of the road. Cars going around and everything, sucks. My wife doesn’t even want to ride in it anymore because of the unreliability right now. Hopefully this will change for the summer!
James wrote:
08 Apr 2019 21:37
The points are probably a major point of your troubles. Get that and the timing sorted and then mess with the carb.
While I agree with Mike on the NGK - I have run champions and they work well.
Where are you located exactly? You look like you are well on your way to getting this sorted. If you need additional tuning help - I'm in laguna beach - and occasionally head to Glendale.

510wagon
Posts: 27
Joined: 30 Jan 2017 16:55
Location: Los Angeles Ca

Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 09 Apr 2019 21:04

Update. Replaced points. Set points to 0.020 . Ordered new plugs, wires, rotor and cap, coming in the mail. Checked timing. Have confusion that I hope someone can help me with.

First two pics I’ll post are of the repair manual. It states in blue that the TDC is all the way to the left. But why is the second to the left on my crank pully cut the deepest and why does it have white paint in it?

Second the repair manual states in green that each grove indicates 5 degrees before TDC. But then the next page it states that the 10 degree requirement would be the 4th groove from the left. Would the 4th groove be 15 degrees? If the first groove is 0, second be 5, third be 10, fourth be 15? I’m confused here. Maybe i’m reading it wrong?

Third pic is a diagram of what i’m trying to explain. In yellow is the stationary pointer. The left side in green are the degrees, the right side is the number of grooves. So in the pic the timing is at 25 degrees before TDC am I wrong? If someone can help clarify it would be much appreciated. Thank you
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510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 09 Apr 2019 21:07

Here are the other two pics. I don’t use forums often, i’m still trying to learn the interface so please excuse my errors
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510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 09 Apr 2019 21:10

I selected all three pics the first two times idk what’s going on. I guess i have to upload one at a time
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510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 09 Apr 2019 21:11

Check out how strange this point wore
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510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 09 Apr 2019 21:32

I guess a way to check would be to take off the valve cover and line up the cam timing lines for tdc and see where the crank lines up at?

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RMS
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by RMS » 10 Apr 2019 00:11

I have not seen a six grove pulley in any of my datsun books.... but the majority of L series I have are single pointer with a 6 grove pulley ?

5 tdc 5 10 15 20 set @ 12 to 14 on regular
two_68_510s wrote:I guess our donkeys are quicker then your sled dogs!

510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 10 Apr 2019 09:33

RMS wrote:
10 Apr 2019 00:11
I have not seen a six grove pulley in any of my datsun books.... but the majority of L series I have are single pointer with a 6 grove pulley ?

5 tdc 5 10 15 20 set @ 12 to 14 on regular
Thank you for checking your books. I will set timing once I get home today. Then I’ll take it out for a spin and updat how it’s running now

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Byron510
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by Byron510 » 10 Apr 2019 14:26

Those points are definitely done!
And do make sure you change the condenser at the same time - they fail and wear out just as frequently as the points. On my 68 which doesn't have a ballast resister, it sees to go through condensers quickly.

Checking TDC#1 - just pull the plug and use a screw driver to determine TDC while slowly rotating the puller clock-wise.
No need to pull the valve cover - it won't be that far out!
I just saw a stock pulley yesterday in the shop, I'll go count the marks on it, you have me curious now.

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James
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by James » 11 Apr 2019 22:17

I would start with using the deepest cut, painted white as 0 - and then set the timing at 10 (2 marks over). If its 5 degrees advanced - you will know it with pinging, but I'm 99% that the last multi groove pulley was set up this way (both my current cars have single mark on the pulley and the sawtooth timing flag off to the side - later models).
Finished is better than perfect......

510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 12 Apr 2019 11:58

Alright I just set the timing. I started at the deepest cut with the white paint and went over two notches. See pics.
I just took the car out for a 20 minute spin and it ran fine. Hopefully the points and timing was the issue because like I said before, the problem is sporadic. I’ll let the car cool then keep running it and see if it hold up.

510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 12 Apr 2019 12:06

Yes that is a ac lol. I had it blowing 38 degrees F at one point. I retrofitted it for R134a. But disconnect it because the clutch pully bearings were making noise. But to your point, I didn’t know the emissions were blocked off with the models with ACs. I will check all that as well thanks
RMS wrote:
07 Apr 2019 23:15
is that a ac pump I see poking out ? if so most of the pollution control would have been deleted. evap system should be checked or just block off that vaccume port on the manifold.

510wagon
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Re: Rebuild, replace or swap moms 510 carb/engine?

Post by 510wagon » 12 Apr 2019 12:13

When you say condenser, may capacitor be another name for that?
My model does have a resistor mounted on the fender btw. This is a 72 wagon auto.
Byron510 wrote:
10 Apr 2019 14:26
And do make sure you change the condenser at the same time - they fail and wear out just as frequently as the points.

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