Waynos work truck.

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wayno
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Re: Waynos work truck.

#461

Post by wayno » Tue Apr 20, 2021 6:30 pm

Well the machine shop says the head is junk, they say it ran hot and something like this would not happen in an hour, I do not remember it running hot but they said timing could have something to do with it, I had it at 0 degrees a long time after I figured out the cam was off a tooth, it knocked like hell after that, so I eventually re-curved the distributor but I suspect it was slightly knocking timed at 6 degrees, anyway they say the one groove is at least 30 thousands deep.

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Lucky I have a fresh LZ23 engine to put in the truck that I will install the re-curved distributor in right away.

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I will start the removal of the block tomorrow after the small job I have in the morning, I will see if I can get the new engine installed before it rains.
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Re: Waynos work truck.

#462

Post by wayno » Wed Apr 21, 2021 6:39 pm

I pulled the block this afternoon, need to transfer everything over to the new block, I expect I will need to remove the hood to get that in there, I was able to remove the old block without removing the hood but it had no head either.

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I am not sure what is causing this build up on the radiator, the power steering pump is near here, but this is the outside/front, the inside where the pump is is clean, I will need to clean this before installing it.

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Re: Waynos work truck.

#463

Post by wayno » Thu Apr 22, 2021 11:50 pm

I finally got the block in the truck today, I had to redo a few things and still have to redo more, I am replacing the power steering pump assembly with a better setup I made a couple years back, I am hoping this one don't make noise and it should be easier to adjust, when I removed the old setup the adjustment bracket was broken again, but I am going to have to re-pipe the return hose/fitting as the parts appear not to interchange like I was hoping they would, re-inventing the wheel is not a new thing to me. :lol:
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I am hoping to start it tomorrow some time, I have the filter and oil, I already filled the oil pump with oil, I need to deal with the power steering, install the fan pulley/fan and belt, then the radiator, then all the small stuff like fuel lines, throttle cable, wiring everything up which I already started, and put the idler arm back in place as I drop the passenger side to get the centerlink out of the way of the oil pan, adjust the valves cold, add oil...................................
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Re: Waynos work truck.

#464

Post by wayno » Fri Apr 23, 2021 5:00 pm

Well I got it going today, the engine sat in my parts room for likely 7 or 8 years, I was trying to figure out a way to get the oil flowing before starting it so I decided to turn it over with the starter without any plugs in it, I put the filter on, filled it with oil, squirted some oil in every cylinder and let it sit for a while, then I hit the starter and it turned over easily, but when oil pressure built the engine started turning faster, I turned it over till everything inside the valve cover was soaked.

The power steering piping turned out to be easy, all I had to do was loosen the return hose, twist it 90 degrees and everything lined up hose wise and it did not leak after the engine was started.

It started quite easy, it idled in the driveway at least an hour while I checked the timing although I am not sure as I have the sawtooth plate and a pulley with degree marks on it, adjusted the SU carbs and everything else that needed to be done, no leaks that I could see, I drove it a couple blocks and it seemed alright, so I went back home and put everything in the garage and then took it for a 6 to 8 mile drive, it seemed alright but when I let off the pedal when exiting the freeway and gave it some pedal a big cloud of smoke came out the tailpipe, I had just been under compression, I hope there is not an issue, when I got home and opened the hood to take the photos I noticed I had not connected the vacuum advance line, :(
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I made a power steering pump mount assembly a couple years ago, I am hoping this one works better and doesn't break all the time like the other one did, also the RPM related noise is gone so it was the power steering pump, but it did not leak or quit working ever, only the adjustment(belt tightener) bracket kept breaking right where it mounted to the water pump bolt

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You can see the bracket has been broke for a while, maybe it leaked some but I never recall adding fluid to the reservoir.

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Re: Waynos work truck.

#465

Post by wayno » Sun Apr 25, 2021 8:32 pm

Well it took a little while to get it all sorted out, turned out the cam was timed wrong but that allowed it to start and run at 30 degrees advanced which baffled me to no end, it should have kicked back when trying to start it.
It appears to run good now, I have it timed at about 6 degrees BTDC and will advance it a little every once in a while until I hear it start knocking, then I will back it off a couple degrees and call it good, it is kinda confusing as I have the saw tooth timing plate, but I also have the crank pulley with all the timing marks also
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This above was very confusing, especially when at an idle the yellow mark was right here.
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I fixed all the timing issues the best I could, cam is the best I can get it which is not perfect, I would likely have to shim the cam towers to get it right, I had to adjust the bottom nut on the distributor to be able to time it properly as i ran out of adjustment, that plate was advanced all the way, I retarded it all the way and now all appears good.

I took it for the second test drive and it feels and sounds right now, I re-did all the exhaust gaskets and now it is quiet, I can hear things I could never hear before like the rockers, I might adjust them between the rocker and lash pads to see if it quiets it down and then maybe I will figure out where the squeak is coming from, the minor squeak is sorta like something is dry but when I turned it over with the starter to get the oil everywhere it is supposed to be the cam and everything else up there was soaked with oil, but that is where it sounds like it is coming from, under the valve cover, I can only hear it when it is running and I am standing in front of the engine, it is amazing what one can hear without exhaust leaks.

I adjusted the SUs a little rich, in 200 miles when it is time to change the oil/filter I will pull the plugs, I hope to find them black, if they are not black I will be worried.
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Re: Waynos work truck.

#466

Post by wayno » Wed Apr 28, 2021 5:20 pm

I mentioned that incline on the freeway that I could hear it knock in the past on a warm day, well today was not really that hot(75 degrees) but I heard it knocking/pinging on that incline, I am going to retard it a couple degrees in a few minutes, it was only at 6 degrees BTDC now as I recall. :(
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Re: Waynos work truck.

#467

Post by wayno » Wed Apr 28, 2021 6:08 pm

Well I checked the timing and it was at 15 degrees BTDC, I do not understand this, there is no way I would have set it at that :(, I turned it back to 5 degrees BTDC but I will not be on the freeway till next week.
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Re: Waynos work truck.

#468

Post by DRIVEN » Sat May 01, 2021 4:06 pm

That discrepancy would concern me. Looks like mismatched parts. Have you verified actual TDC?
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Re: Waynos work truck.

#469

Post by wayno » Sun May 02, 2021 2:30 pm

Yes I know where TDC is, I used a stiff wire thru #1 spark plug hole, after I had it where I thought it should be I looked down and found the big notch on the pulley lined up with the 0 degree mark on the saw tooth plate, so I can use either set if timing marks I want to use.
The timing thing might be my unstable idle speed, sometimes it is at 700rpm, other times it is over 1000rpms, the actual second I touch the throttle it advances(with the vacuum advance line removed), so what it is at 700rpms is not the same as what it is at 1000rpms, the idle jumps around without any rhyme or reason, I have not figured out why it will not drop down to 700rpms sometimes, I can push on everything and it will not drop, but out on the road it gets into the 700rpm mode and idles kinda rough, it does not try to die(well it has not died yet idling), but it is not missing either, but the way I put on the motor mounts it kinda makes the whole truck shake, the motor mount plate is kinda steep on the frame.
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Re: Waynos work truck.

#470

Post by DRIVEN » Sun May 02, 2021 3:42 pm

Are your advance weights hanging up?
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Re: Waynos work truck.

#471

Post by wayno » Sun May 02, 2021 5:00 pm

It appears to advance normally when I give it a little throttle when I am looking at it with the timing light, but I am unsure about the vacuum part of the distributor working, as when I connect the vacuum line up and rev it it acts the same, but I am too lazy to get another hose/line and suck on it while it is running to see if it advances, the hose going to the front SU carb is a real pain to connect with everything in the way so I do not remove it from there once connected.

When I re-curved the distributor I did weld down there, I welded a 1/16" in the short slot to make it a 1/16" shorter like I was told to do by the distributorguy on Ratsun, he does that for people to make money, you see I sold him a H190 Detroit Locker for his Bonneville Salt Flats 620 race truck, so he told me what to do to re-curve my distributor, it still advances when the vacuum advance is disconnected so I don't think it is jammed or anything like that, I tried to do a really good job on that mod, I think it looked really good for something I did when I put it back together.

All I care about is that it does not knock/ping on the freeway on slight inclines, it was knocking last Wednesday I think, I have not had it on the freeway since so I don't know if I fixed it yet.

I do recall before re-curving the distributor I had it timed at 0 degrees to keep it from knocking/pinging, my machine shop guy said the damage to the head could have been caused by that(timed retarded), but he really stressed that it likely happened when it was running hot and lean, I do not look at my plugs much anymore like I used to, I don't do a lot of things I should do, so if it went lean I did not know it, I looked at the plugs the other day when I checked the timing and they certainly were not running rich so I gave it some more fuel by opening up the fuel mixture on both carbs, one more than the other, I have another 100 miles before changing the oil/filter, I will look at them again then.
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