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Poor man crank polisher
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- Опубликовано: 4 янв 2021
- Connor and I discover the crankshaft isn't scored as much as it has bearing transfer. the metal from the bearings lightly fused to the crank. So in true country boy manner we polish it.
I bolt the flywheel to the crank put it all on the wheel clamp on my tire machine hit the rotate lever while it spins I use about 3 feet of emery clothe pulling back and forth works like a charm everytime
Great idea! Now I wish I had a tire machine. Thanks for watching James. I hope you enjoyed it! John
thats a freaking crazy godlike awesome idea James Perry you need to video it lol
You have to use an oil lubricant when you polish a crankshaft or camshaft using sandpaper with 320 Grit without any type of oil you're going to mess up your crankshaft
Hi Kentbarger, thanks for watching. So far I am optimistic, of course we haven't started it yet. . Mainly with the crank we were taking off fused bearing material. We did do it dry and we changed paper a lot because it plugged with the bearing metals. I guess we are at the point where it will work or it won't. starting to put it back together so subscribe and hit the bell to see what happens.
You can polish it up without lubricant but you"d have to go up to 1000 grit
You can scrape aluminum off of a crank journal with a hard steel razor?
A good crank polish is about 65 bucks. Spend the money where it counts.
Hi Ryan, Thanks for watching. We have a terrible overwhelming desire to see what we can get away with. Keep checking back and see if we really screwed up. Thanks again; John
Add WD-40 helps out
Nice. I have a V-6 crankshaft in the bottom of a Nissan 3.3L VG33E long block, from my 1998 Pathfinder, 166,000 miles. Very clean and owned by an elderly couple since new. Oil pan is off. Block is sitting on its top in a tire giving me access to crank. It is a spare motor. It was having rod and/or main bearing knock. I found shavings in oil and filter. It had been oil starved from previous owner, due to a leak they didn't notice. First I had moonlighting mechanic try to refresh bearings. Nothing changed. I'm not sure he did it well. I had it pulled out and replaced with used motor. I want to restore the crank, flush motor with cheap vegetable oil and then diesel and put it back in. Any suggestions? My first time doing any motor block repair. Thanks!
My guess is it pounded the crank. It only takes a couple 1/1000ths to make it un-runable. I'm not familiar with that particular engine and what the common wear items are and how many miles they run before things like rings, timing chains and valvetrain, oil pumps, cams etc.. wear out. So I can't advise on if its worth fixing or not. You should probably take the crank to a machine shop and have them mic it out and turn it down if possible. then get the bearings to that spec ( have the shop order them) get a new oil pump too and re-install it using the manufacturer recommended procedure. Its always a crap shoot. Thanks for commenting!!!! John
Nice micrometer!!! ROFLMFAO!!
Hi An; Glad you got a great laugh. Hit that subscribe button I will keep trying to give you something to ROFLMFAO about. Thanks for watching! John
My 327 broke oil pump. Ran for few minutes without oil. My conn rod journals slightly discolored. Cannot feel any transfer. Do you think I’m ok to replace the oil pump and run it.
Hey Honest Abe; Couldn't say for sure. The discoloration probably means heat. If the motor is out I would defiantly pull the crank and send it out. 327 is known for high reving and that is the killer if anything is just slightly out of spec. If its in the car I would see if I could clean it up and put in new bearings plastigage it and see what happens. As long as its not a rare valuable numbers matching motor and car. Then I wouldn't risk it pull the motor and send it out. Thanks for the comment and thanks for watching. John
P.S. Part of the reason we did this is to see if we could "get away with it". And we still haven't seen yet.
My dear, after this smart polishing, all the diameters of this crankshaft have shrunk a little bit, right? When new bearings are fitted, the clearance may be at the limit or slightly beyond tolerances. I don't think that's good. Would there be intermediate bearings for the clearances to be kept to a minimum or would the friend use some resource (people do some tricks, but... ) to reduce the clearances? Greetings from Brazil.
with luck, I only removed the transferred bearing material
There's plenty of machine shops that do it this way when it just needs a quick clean up and doesn't need to be cut. This method doesn't remove any measurable amount of material from the actual journal. Just because it doesn't go to a shop and cost money doesn't mean it isn't the right way.
Standard bearing size will fit up to .10 oversized
@@Jv19979 Greetings. You want to say .25mm? I think this kind of bearing assembly depends a lot ... if the guy wants to do a simple / cheap service worth installing the bearings with some clearance. If the desire is to do a perfect service, then it is best to install with ideal clearances, but as I posted, it depends on several factors.
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New subscriber!🔥🔥🔥🔥
Thanks!! John
@@JohnFrytag yes sir 💪🏿💪🏿💪🏿🔥🔥🔥
FYI; Changed channel name to John Frytag. Thanks!
Good nis
Did you ever start it up?
Nope not yet. I hope to get back to it in a couple weeks. Thanks for watching!! John
@@JohnFrytag I’m doing the same thing on a Chevy s10 rn but I’m waiting on parts lol
Well, did it work or what? The internet wants to know :)
Hi Erik: We don't know yet....I have to finish this Junkyard Caddy project and then I will get back on it. You aren't the only guy to ask. And I am getting anxious to see myself. Thanks for the comment and watching. Check back I will get on that 830 crank polish as soon as I can! Thanks; John
Reall !!??? Spend your Beer Tokens.. and have a machine shop Grind that crank
I usto do this just with a strip of emry
Yep. this crank had a buildup of bearing material stuck to it.
@@JohnFrytag I have a Kohler k series Thay don't use bearings so mine is built up with lots of aluminium.not the crank project I wanted but it's the one I ended up with .it has ben years since I have done any real engine work so il try to have fun with it lol I think il spend the extra cash on a customer rod with bearings and 8m going to try it this way with the belt looks like it works really well
Use waistband of your underwear and soak the paper in brake fluid
Hi Patton; one question...Should I take the underwear off first? Thanks for commenting and watching!! John
Underwear on or off😂brilliant
Lmao this is not the way to do it
Hi Shiznit: Thats for sure. I have to get back to that project and see if it worked. Check back and see. Thanks for the comment and watching! John
FYI; Changed channel name to John Frytag. Thanks!