Rebuilding a John Deere Model A Cylinder Head - Valve Job -
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- Опубліковано 23 вер 2024
- This is the first video of two showcasing the machine work we are doing for a customer on their John Deere Model A engine. This video covers the rebuild process for the cylinder head including installing new guides, seats, and a resurface.
Don't forget to subscribe to see part two where we install cylinder sleeves in the block!
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I love when y’all are doing old 2 cylinders. I restore a lot of farm equipment and sure wish your shop was closer. Getting harder to find machinist around here that want to work on Ag equipment.
I've been a machinist since 1989. You guys do some of the highest quality work I've seen.
Love the attention to detail along with the cleanness!
My grandpa still praises the model A to this day. Even tough after he had a porsche and a lamborghini tractor.
you should do a before and after with the vacuum test. great content keep up the good work
Easy listening Easy watching, plus no music 🙏🙏🙏
Ives always been intrigued and interest in machining. Its an art form in my eyes. Wish I could learn
When i was a kid My dad built a log splitter from an old hand crank 2 cylinder John Deere combine engine we got outta my uncle's field in southern Maryland. I don't remember the year of it but we honed it and put new rings and i remember it had to run with non detergent oil. I think he said it was a 16hp motor
you do great work. Great attention to detail. you obviously take pride in your work and you should. that kind of service is rare these days
Awesome video-I’m in process of having someone redo a John Deere A(1948) and it’s nice to see what goes on in redoing the head. Thanks
Nice equipment, good craftsmanship. Your dad taught you well!
the world you work in is truly amazing and I miss it
A privilege to get to see you work sir....QUALITY...
I always pressed out removable valve guides. I do a lot of custom one-off work and old valve guides make perfect mandrels for turning between centers . And they are a constant source of bushings and spacers.
Like that clean shop too. That’s a cafeteria compared to my place.
Ditto on the clean shop and attention to all the details. I can count on one hand the young men who know how and like their job in a machine shop....... keep up the good quality work.
My Uncle had an Amodel John Deer, we called it Thumper. The damn thing would pull a house off it's foundation.
very nice and impressive. I have both 1951 A and B. Debating to have headwork done.
much love and respect to you and don’t change your style of how you work
Wonderful content . Thanks for sharing !
Nice work as always! These are great too watch!
Not meanin' to give myself a pat on the back but surely those who enjoy watching your videos are both mechanically inclined and of solid intelligence. And don't you know that we all appreciate both your successes and your failures. Like Jack Webb of TV's Dragnet fame honestly remarked about getting cops: "the problem with finding PERFECT cops is you have to choose from HUMANS."
Keep up the good show guys!
Great vid Sir, thank you for your professionalism
Such an important job, thanks for the video.
wow, great job! about how much did it cost to do all that? i have the exact same head, and need the same work done on it
I also have one I would like done
Thanks for the video.
That looks like a Good Friends Club hat 😁😁
I follow you guys on the TikToks
In order to maintain the professionalism I strive for, that is the only thing my GFC hat stands for 😊. Glad to meet another member of the GFC!
Fun to watch👍👍👍👍👍👏🏻👏🏻👏🏻👏🏻
One of the few shops that actually knows how to do a proper decking and valve job.
Will have to give you guys a call. Restoring a model B this winter that needs head and possible cylinder work and possibly turning up a 630 to be my second puller
Great video. Maybe do a head setup tutorial on the seat and guide machine.
I’d love to see some port work on these heads to improve flow and power
Nice job
Excellent Job I Love Engine Machining I’m an Automotive & Truck Mechanic Also Small Engine Mechanic 👨🏼🔧😀😎 You Have Excellent Attention to Detail
Good job👍
Great job. Thanks for sharing your skills and information
Excellent work
Very nice work alot of geometry involved..and why no valve seals ?
I owned a Model H, and after purchasing it, found the cylinders would fill with water from cooling system overnight. Horrible installation by someone of sleeves in cylinders. Tore it down , had head trued, new sleeves professionally installed, new babbit bearings poured for the rods. After all of that, still got water in cylinders. Went back for another set of head gaskets, and ran into a "old timer" who heard my issues being discussed. He told me to take the all metal head gaskets and spray paint a couple of coats of paint on them and let them dry, then install. Never had another problem.
Is copper coat spray ok ? I know my metal head gasket on my little h was coated with that after the overhaul I installed a grey one with fire rings but didn't spray it. Had some coolant in the crankcase . I think I have it stopped with stop leak. Lately these aluminum engines are giving me similar fits . I think I will be spraying head gaskets and use new head bolts. Thanks for the insight.
@@ronaldgodden4490 All I used was something like Krylon spray paint. You are just filling in the tiny scratches that you cant even see. Couple of coats, allowing drying between times. Fixed my issue completely. Had the tractor for several years and never leaked.
I've been told by some old two cylinder boys that if a old two cylinder Deere has weak valve springs they won't idle right. May only idle on one cylinder. I personally haven't run into this yet, but best to check those valve springs.
Great video! Thanks.
You do a very independent job i can watch this all day long. What are some of the other engine's have you worked on
I noticed you didn’t number the valves to the corresponding port. Your machine work must be spot on! Nice work!
a 3 angle valve job on that type head is kind of counter productive. As eventually it will carbon up on the non seat angles. And you are reducing the amount of available seat to valve area. which is going to reduce the service life of the valve job witch is generally the most important factor on that kind of application. In my opinion.
Very nice
Nice videos. Nice explanation! 👍
I haven't seen any videos like this so much precisely i think this Engine will last very long if handler take care well
What is the interference fit between the new seats and the head? It amazes me that they don't drop, it's pretty cool !
Also, just curious, why don't you surface after all the valve work is done? so the surfaces don't get scratched.
Hey I just found your videos and really enjoy them. I’m starting to consider this as a job and was wondering if your recommended the job and how often does the average machinist work on engines because they’re the most interesting part of it to me.
Looks better than it did from factory 👍👍✌️
Really good job👍
Interesting...thanks
Thanks for watching!
Will this JD be in a field or parade? Or is it for tractor racing? I bet the resale value of older tractors went up when the manufacturers began making new ones too technical for on-farm repair.
Those poor bastards, manufacturers forcing them to pay for software or truck the tracks there for repair. Way too technical these days...
Nice work, I trust you test the valve spring pressures as well
I bet they don't
MCGI ...THANKS GOD BLESS.
👁 spy a monza!! I have a 77 "town coupe"
Glad I'm not alone in the quest of upgrading to S10 front end parts and scouring junkyards for interior parts
Haha! I’ll have to make some video on it. Ours is a 76. It’s gonna be a little dragster 🤓
As a fellow engine machinist why don’t you do the valve work and then surface it? That way you don’t have to be so worried about scratching the head gasket surface.
On Diesel, I surface first just for the reason of being able to accurately set valve protrusion/recession.
On everything else it just depends on the work flow of the shop & what machine is open. In this case, I knew the surfacing machine was about to be tied up w/ the block fixture for boring/decking blocks... so I got the surface out of the way first.
I agree it’s nice not to have to worry about scratching the nice surface, but at the same time it’s just not really that big of a deal as I’m careful not to damage the surface regardless lol
Just the way things go in our shop 🙃
Thats also an engine with about 5:1 compression ratio so mating surface isn't a huge deal
Do you checked spring pressure at installed height and at maximum lift?
Now why do you cut the intake at 30 and the otulet at 45 degrees? Is that dictated by the valve geometry?
Manufacturers have specs for the seat angles, matches to the valve face angle.
@@bigford1578 alright, thanks
What kind of baking do you do?
I see the head is super clean, if you can document more of the process around cleaning, I would be glad
Seems I’m the first to comment on this, but if you watch to the very last second of the video, it seems that you get to see a rare screwup and possible damage to a piston!
The piston is being removed as it is worn out and scrapped
Great job ,jim,s say hai from indonesia dude
Y’all work on motorcycle engines?
New sub here.
Like #625
Thanks for the video!
You have any import? Honda video? Awsome job! Liking the content!
Brilliant videos
what insert are you using to reface cast iron
No indicator on that squareness jst a level idk my boy shit prolly out a few thousands out of square 🤣🤣🤣
Is that head spark ignition or diesel? Maybe I didn't see the threaded hole in it.
Spark plugs thread into the block on a model A.
@@bradrynes525 Thanks for the clarification.
How much did they save by not using all new valves?
If i wanted my cyl honed for new rings what type of hone would you use for a ls2 i was under the impression that a honing machine would be used right or would a ding ball hone be used at a machine shop
The reason I ask is because I brought 6.0l ls in becouse the piston bent a valve i wanted the valve seat repaired guide checked.and a new valve piston rings and coated bearings i gave the the machine shop the block with rotating assy and heads what i got was dingle ball honed he forgot the seat and quickly repaired it while i waited with a stone all of 5min i assembled it with all new parts dod delete cam lifters pushrods springs trunion gaskets and so on 4 weeks later again ptv contact is this a bad or lazy machine shop
Where are you guys located
Why do the intake and exhaust valves have different seat angles?
How much was this to do?
On a diesel engine the contact surface area on valve to seat is wider?
👍
Do you have shirts available? If so how can they be ordered?
Not currently unfortunately! I’m sorry 😢
😀👍👏👍
First comment?
I wonder if those Pakistani guys watch your videos lol
Hand lap
If you would lap the valves it would be that much better
Please respond?