This is educational as well as hilarious! The sarcasm is thick! Love it!

Enjoy every video Tatro, keep up the good work, been working on these things for a long time also but still enjoy watching the interaction with all the characters that come thru your shop.

Great lesson. Yes, need to watch many several times but the general just how a pump works and sumps come through for those like me- clueless. Thanks again for another densely packed informative vid.

Thank you for all you share Tatro, The knowledge your willing and taking your time to share with others and myself is a tremendous help!

Tatro, I could listen to your knowledge all day long☆☆☆☆☆☆

exactly the kind of topic that would go good on your “live” series. I think I remember you doing a video a few years ago dedicated to the differences between the various oil pump (years and manufacturers).

Very Informative. Thank you. Great learn ing channel. And good old plane English!!!!

You are very patient👍

Very good information!! Keep it up brother

And I enjoyed your show completely very educational

GREAT INFO!!!!!

Thank you! Very through response! And thanks for your videos!

Great info, Thanks!

Here's a serious offer Tatro! I didn't know you were in SD. I live in Idaho but I'm a 4th generation SD Native. I love riding and wrenching on old iron and plan on coming back to San Diego for the cold winter months. If you could use a good. AND CHEAP part time helper at your shop I would like to apply. I am pretty good with a wrench, will do any shop chores or tasks, machining, clean up, counter help, organize and inventory parts. I don't care as long as I can learn some along the way. I have done hundreds of top ends, carbs, brakes, and resurrected some pretty far gone old Harleys, but there is still a lot to learn. I would like to learn to build motors, from the bottom up etc. and can't think of a better way to learn or really anyone better to learn from. I am disabled with a bad back but can keep a fairly reasonable pace and have my own insurance. I will be looking for something to keep me busy this winter and If you like I will come to work for you. from November 1st 2020, thru May 1, 2020. I can work around 20 hours a week, and I will work for $8 bucks an hour, I figure that's a steal for what I could learn, additionally, if you will give me some training and allow me to "tag along" and help from time to time when you are building motors. I would do that on my own time just for the schooling. There aren't too many mechanics that know these machines like you do, maybe you could use the help? Anyway, I will come and introduce myself when I get to town, if nothing else I am sure I will need parts for one of my bikes. Thanks for the great videos, my 84 will be fixed today cause of this one !

Dang good info. I have Breather heads and my STD cases have a breather port ( plugged). I'm going to make it a bottom breather after seeing this 👍

You just described what my '76 FLH is doing... leaking oil all over the place because the vent tube hole is plugged off!!!!

Yes!...Yes!...Brilliant!

The first time I had blowby was when I put a Delorto pumper carb on my Shovelhead. A old, old Harley mechanic told me no problem. Awesome video .

Thanks I’ve been wanting to know what’s going on in my shovels oil system to make it puke oil after it’s been sitting.

We would love to see Tatro Live! Do it 👊💨 and thanks for sharing 🏍️💨

like to see a video of check valve lapping , and oil pump installation

Tatro ….. the fucking guy has forgot more than most of us will ever remember! Would love to meet you and shake your hand !

Can people send you stuff to work on? There’s nobody like you where I live man!

Have a qwestion what is your thoughts on the oil pressure spring stretch trick peaple are talking about? I've seen people doing it on you tube and it appears to improve the oil pressure alot but would that actually be bad for the 80cc involving this oil supping problem? I'm new on the evolution motor and realy enjoy your teachings. Thank you.

Hey Tatro, I'm rebuilding a 74 ironhead motor and I can feel a bit of drag at one point when I spin the breather valve gear of the oil pump by hand, but It spins perfectly when I do it moving the crankshaft with the rods like you do. Do you think it's okay? Thank you

Ah hahahah oh shit that was good thanks Tatro!!!

Your partner has no idea thought a Sportster was a cvo he just listened I like that I guess all new engines are junk according to you

It has been a good vid I still won’t to know if I can just Block off the pipes going to my chain case 1981 FLT has some one got a answer for me and the best way or could I join the pipes ?

Hey Tatro, would you use the reedvalve breather in an early Evo motor? S&S says they are only for use in the later top breather evos, but i been told from several people that they work fine in the older evo motors.

I wanna learn everything there is to know about bikes, but I'm not sure what to start reading up on. 2 Winters ago I tore down my Shovelhead to the frame and put it back together in a couple days.

I installed a S&S twin cam dx engine to the Dyna, the engine oil spilled out, the S&S twin cam dx breathing hose would like you to advise me on what happened, what was wrong and what should I do to fix it? Thanks.

what might be the problem where the oild continuously pumps out blowout but will empty oil tank if u let it?

Do you recommend using the reed valve style breather on stock Knucklehead motors? Thanks for all the videos

Hello, I am rebuilding a 72 and wondering about your comment , one year only pos. Can you tell me more about the 72 pump? Thanks

on a 1996 EVO engine on which side the seal lip should be positioned, there seems to be confusion about the correct way to install it, nobody explains or shows on video the correct installation position, I think the attached to prevent the high pressure oil from going into the return gear side of the pump, sorry for the translation I speak french, thank you

Is there anyway to recondition the pump body that is scored in the scavenger side of the body

Wood take care oil over fil by draining oil out motor when sit long time ansee fix check when you refill oiltankwith oil you take out

sure you are!

which reed valve works the best ie worth the money as they are quite a lot more than OEM

Hello, good clip After filling in the new oil, I filled too much, oil started to come out of the air filter, and even after I drained some of the oil, oil still flows and empties my oil tank. What is the cause and what is the solution? Thanks, I have FXEF fat bob model 1985 evo engine filter s&s

✌

Dude I need serious help could you please help me I have a 1998 Harley Davidson Dyna wide glide built into a chopper so it's not in the original frame anymore but I had oil and heavy smoke coming out of the exhaust I take it for a ride and all of a sudden the oil cap blows off hits me in the leg and then the bike sounds like it has a lot of friction and wont start like there's no oil in the case anymore please tell me what's wrong so I know what to fix. And just prior to this while all the trouble was happening I don't know which hose it is what it's called but it's the one in the middle and it goes up to the top of oil pump by the tappet filter, it never had any oil in it ever it was always clear

Heck yea 🖖🏽 Just a question on the breather valve I remember their plastic is it better to replace it with a steel breather valve my bike only has about 16,000 miles on it it’s a 98 Fatboy I don’t know if it has the plastic or the steel how do you remember I had a shovel head 75 and I think I replaced it with steel years ago I don’t remember the reason or somebody told me to do it do you think it’s needed or is plastic good enough thank you

I own a 73 Harley-Davidson FLH Electra Glide I have built it I thought it a basket case I have a question my oil pump has two Ball Bearing in the top of it they told me to change the ball bearing with a pistol but the Piston won't fit in the hole what do I do

How much would you sell a oil pump housing for a 72 Ironhead?

Do you have a complete Harley 80in evo motor forsale?

The problem with wet sumping is there isn't a seal in the case for the shaft, machine out the case for a seal and wet sumping is over. Tom pump pro

Question, very likely that only you can actually answer: (and, thanks in advance) I have a sifton 12-9969 oil pump on a 56 pan. Was put on 20 years ago by a good shop (reminds me of your brilliantly sarcastic ass!) and has been a champ always, no issues. The bike went down a decade ago (thank you life, may I have another) and I’ve finally brought it up. As of now my only remaining issue is the chain oiler screw in the pump, as in, I don’t have one. As you know, without it or it misadjusted it’ll drain your oil tank toot sweet and toast your motor. I ordered one mail order, it’s too fat for the pump. God forbid there be standardization... anyway, do you know if this sifton model is generic enough in its use of this needle screw, or is it entirely sifton/model specific? I’m tempted to take a plain Allen headed screw to the belt sander and cone the end, but I’d much rather have guidance from one of the last remaining actually knowledgeable people left on the planet.

Soooo what about the budding riding behind you and your plumbed oil slick? I have an 79 FLH. This sucks

How about a new inline check valve?

Tatro, I have learned a lot about bottom ends from you and really appreciate it, but George The Animal Steel is annoying as hell.

You are very intelligent and very patient with that dumb ass guy. I loved your dry humor and sarcasm. This is exactly how I teach my new guys on my crew.

😂😂🤣🤣👍

Hey boss, I got a question, I bought a bike with a 131 merch performance motor on it. I put it in the shop got it back and now it's sumping bad. I can run it and when I turn it off it dumps half a quart of oil everytime I shut it off. Even if I only shut her down for 15 min. She's a leaky bitch, but how do I fix it? Is it as simple as a check valve ball or do you think I need a new oil pump? It's a performance machine oil pump.

Because if a shitty ball bearing that's leaking oil into the base

You could probably hold up a bank with that oil pump housing at 1:45 :)

oil came out from crank case vent

This is a good reason to own a Honda. Rediculas oil spewing🙄

I need one for a 72 Iron Head

Who is the big guy at the very beginning? I figure he's a Tatro relative or someone. But, you seem very used to him. Sometimes, I'm thinking "the poor guy". Other times, l'm like "wtf?". Anyway Tatro, about your hand. You have to be careful of the machine tools. Please, Please Please, take care around the power machines. . . .

Wow it would have been really tough to did some of those junk parts out before you started rambling on

It took The Motor Company until 1993 to figure out how to eliminate the wet sumping problem by relocating the oil bag under the transmission. What I find HILARIOUS is that prior to that they directed the oil line BACK INTO the carburetor via the air box! WTF???? Couldn't they figure out how to get that oil back into the oil bag? Such a dumb ass group of Engineers...