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- #21
Ok, I'll start there on Saturday and let you know what I see
1970 bad engine (3 Viewers)
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pb4ugo
SILVER Star
You say you got it up running a week ago. What's the history prior to that? Was it running b4 the oil change? It seems like we're not getting the full story of the engine.
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- #23
Hi Charlie, are you close to Post Falls Coeur d' Alene area?
No. I'm like in the Boise area. I have been to your area many times.
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- #25
Well, I bought the rig only a few weeks ago so i don't have the full story but here is what I have. It started and ran fine when i was checking it out then after driving it home and running around a bit it I started hearing a knock. Then one day I was just cruising along and I heard a loud bang and everything died, engine wouldn't start after that. I towed it home and started working on it and after a few hours it started, before that it wouldn't even turn over, it sounded like the starter or engine was frozen. Anyway for some reason it starts now and idles fine, but as you can hear it has a knock that I can't seem to figure out and there is very little power if you try to drive it
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- #26
ok, I'm going to call the guys at South to North Cruisers and see what they say
Can't open the video but good luck with the exploration. Sounds like something fairly significant though :/
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- #28
Thank you, I'll see what happens over the winter
Skreddy
SILVER Star
I sent you a pm a couple days ago. I’m not far and I go to post falls a couple times a week if you want another set of ears/eyes.
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- #30
Sorry i didn't see it, I sure would, I'm not great at these but love driving them
my cell is 2089643377, and thanks!!- Thread starter
- #31
Here are videos again. I think you can open these ones.
Skreddy
SILVER Star
Video link works now. The cadence of that noise in the second video would lead me to valvetrain I think. Reason: seems to tick about 4-6 times per second. Valvetrain moves half the speed of crank so if it is 6 times per second, that’d be 360 rpm if it’s the crank end or 720 rpm if it’s the valvetrain.
In my opinion, valvetrain noise is usually a better problem than crank end.
In my opinion, valvetrain noise is usually a better problem than crank end.
Sounds like you might have something in common with this thread... check out the photos at the bottom of the first page.
forum.ih8mud.com
1968 Fj40 locked up when starting.
So my motor is out of my 1985 fj60. It was daily driven and has around 500k. It is now in my 1968 fj40. I was having some fuel delivery issues during an event at GSMTR2023. So I parked up on the trailer. So I went to take it off the trailer Monday as I hit the key and the motor was turning over...
forum.ih8mud.com
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- #34
Good to know, I'll try pulling one plug at a time when running to see if the noise goes away or changes and let you know here. If nothing then I'll pull the cover and look inside
Sounds very similar, parts are hard to come by for these 1F motors I'm seeingSounds like you might have something in common with this thread... check out the photos at the bottom of the first page.
1968 Fj40 locked up when starting.
So my motor is out of my 1985 fj60. It was daily driven and has around 500k. It is now in my 1968 fj40. I was having some fuel delivery issues during an event at GSMTR2023. So I parked up on the trailer. So I went to take it off the trailer Monday as I hit the key and the motor was turning over...
- Thread starter
- #35
Thanks to Skreddy for his help, I think it's a spun bearing, will confirm later this week. Not easy to find any 1 or 2F motors, anyone have thoughts on how hard it is to swap over to a small block? Do you need new bellhousing and tranny? I'm sure it's not a perfect fit but curious if it's worth a try..
Drop the oil pan and inspect the journals on your crankshaft. Should be very evident where the culprit is. If you have standard journals and theres no scoring you might get lucky. Possible regrind and the appropriate size bearing might do the trick. Won’t hurt to check before you go all in on a new 2f or SBC conversion. As someone once told me. “It’s a tractor engine”.
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- #37
That was my plan next time out in the shop, I'll take some pictures and post them if to get your opinion. I would much rather have this rig original so hoping I can salvage this 1F
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- #38
Here is what I found, all looked ok and were tight except #1, took it apart, see below. I've seen some videos of these being cleaned, sanded with 400 or so and put back together, anyone ever done that?
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- #39
Stop 
don’t use sandpaper. Looks like your into professional help on this one. Cant tell how+deep you are by the vid. I think .025 is the most you can go when you have one turned. Someone fact check me on that..
You have a good competent machine shop close by? I/we used NAPA years ago todo SBC’s not sure they provide that service in house.
@cruisermatt might be able to look (eyeball) at that vid/pic with a calibrated eye and give you some feedback on the viability of saving your crank, or point you to a replacement…
don’t use sandpaper. Looks like your into professional help on this one. Cant tell how+deep you are by the vid. I think .025 is the most you can go when you have one turned. Someone fact check me on that..You have a good competent machine shop close by? I/we used NAPA years ago todo SBC’s not sure they provide that service in house.
@cruisermatt might be able to look (eyeball) at that vid/pic with a calibrated eye and give you some feedback on the viability of saving your crank, or point you to a replacement…
