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Cody's Goon


Patcon

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12 hours ago, Patcon said:

Maybe a leaks in between the middle two?

Take a test on #2 again, and another on #2 again but now with a plug thight in #3.. if it differs your headgasket leaks between # 2 and #3 ...  (or bad rings.. is another..)

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2 hours ago, Martzedcars said:

Take a test on #2 again, and another on #2 again but now with a plug thight in #3.. if it differs your headgasket leaks between # 2 and #3 ...  (or bad rings.. is another..)

That's a good idea!

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Ok. Here's the latest.

I forgot to Martzedcars trick...:blush:

We did another compression test

         Dry        Wet       Leak test

#1    142       157         28%

#2     120      163         47%

#3     128      151         33%

#4     140      160         38%

For the wet test, I shot 3 squirts of oil into each cylinder. The number came up dramatically. All of this is on a cold engine. I believe the leak test numbers were also influenced by the rings too because the numbers would inch up like the oil was being blown out from around the rings.

I am still waiting on a coolant system tester to pressurize the system and look for leaks...

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3 hours ago, Martzedcars said:

:cry:

 

Hi, when i see those figures i would take that engine apart completely, think your rings are history... :(   A full revision is inescapable..

 

24 minutes ago, Diseazd said:

Still doesn’t tell you where the water is going......I’d get me a used L18......fully counter balanced crank and a little more pop! Send your motor over the “Datsun Rainbow Bridge!”   

I agree the engine will need to be replaced, and it still doesn't tell where the water is going. I will probably try to get this engine running for a little while longer just so the car isn't broken down for an extended period of time. that will buy me some time to build up a better engine

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Take the head to a machine shop and have it magnafluxed. If it’s a deteriated water jacket, maybe it can be welded, otherwise it has to be a crack in the block. Either way, it ain’t going to buy you time unless it’s repaired. Losing a gallon of water ain’t a small problem.........it’s a terminal problem. Still can’t imagine how you lose that much water without a trace!  I’ll stay tuned.

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10 hours ago, Diseazd said:

Take the head to a machine shop and have it magnafluxed. If it’s a deteriated water jacket, maybe it can be welded, otherwise it has to be a crack in the block. Either way, it ain’t going to buy you time unless it’s repaired. Losing a gallon of water ain’t a small problem.........it’s a terminal problem. Still can’t imagine how you lose that much water without a trace!  I’ll stay tuned.

I agree. That is the plan of action. I am waiting for a coolant pressure tester before we pull the head.

By the way I sent Brandon a PM. Haven't heard back yet...

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  • 4 weeks later...

Pulled the head last weekend

20180527_133022.jpg20180527_133020.jpg20180527_133018.jpg

I think that might be our water leak #1. I checked it with a machinist rule and it's out of spec. Took it to the machine shop and he said it looks like someone had been belt sanding on it. So hopefully we will get it back the end of next week. Broke one of the bolts as the thermostat too

20180601_164659.jpg

Painted another one of his doors too

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  • 4 weeks later...
14 minutes ago, NVZEE said:

Closer all the time to having that engine out, piece by piece ...

That's bad!

That's the wrong direction at the moment. I don't want to tackle that right now. I want to get it running before he loses motivation...

I am having trouble finding the info for setting the camshaft timing.

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  • 1 month later...

Well we got Cody's car running a few weekends ago. We got the timing cover off and redid all those seals and reset the plunger. It has fixed the water consumption issue.

We also found he was losing the rear brake circuit due to leaks. So we rebuilt all of the rear brakes. New shoes, wheel cylinders and hardware. I had Cody do most of it. He did good with it! We also put some new tires on it to prevent scrubbing in the wheel wells. It's a lot better but the right side that got hit still scrubs a little bit. He is happy to have his car back.

20180624_174939.jpg20180630_133340.jpg20180701_134123.jpg20180721_150822.jpg20180721_150829.jpg20180721_150836.jpg

 

A while back I worked on the grill and headlight buckets. I had Cody buff all of them. You have to buff them on a lower speed if possible. They are easily damaged if the wheel takes them away from you. Then I taped them all up so I could spray the black. I used the Eastwood satin black 2K. It looks good. We'll see how it holds up. It had mixed reviews, but so far I have gotten good results with it.

I should have taken some pictures of them all taped up. I always get going and forget to do it.

Here are some finished pictures:

20180724_181013.jpg20180724_181017.jpg

I bought some 1/4" pin striping tape which helped a lot on taping off the fine lines

20180724_181108.jpg20180724_181112.jpg20180724_181121.jpg

This last one peeled a little when the tape was removed. I think it did that because we didn't get all the buffing compound off before spraying them.

Next on the list are some suspension repairs. the front struts seem shot, sway bar links are shot and the sway bar bushings will get redone too

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14 hours ago, grannyknot said:

In the first pic, is that an oiler just above crankshaft sprocket?

The little stud with the hole in the end? I don't know, I didn't notice it while doing the chain, but I noticed it in the picture and wondered what it is

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On 6/24/2018 at 11:40 PM, NVZEE said:

Plenty of other references out there — this one’s simply a classic:

http://www.nwdatsuns.com/dtech/How_to_Keep_Your_Datsun_L_Z_Series_Nissan_Alive_1968-1986.pdf

33ACE375-9814-418B-B3C0-50DC59FD86E1.jpeg

Charles,

If you get the chance, can upload that pdf to the technical download section? Nwdatsuns seems to be down and it might be lost to others.

Great father and son project you are doing. Love it.

Screenshot_20180729-101317.png

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6 hours ago, EuroDat said:

Charles,

If you get the chance, can upload that pdf to the technical download section? Nwdatsuns seems to be down and it might be lost to others.

Great father and son project you are doing. Love it.

Done. Good call Chas. Mike or another Mod will have to approve it to make it active I believe

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