(800) 853-2651
SHOP NOW

41 H using lots of oil

A

Anonymous-0

Well-known Member
Hello,
got a question, We have a 41 H that we restored, we used the factory pistons,New rings, 1 sleeve, had the head completley rebuilt, with valves, guides, springs, tubes you name it. We rebuilt the oil pump and have tremendous oil pressure. 75 pounds, cold, 65 hot. Our problem is that it smokes tremendously, but it has very good compression and pulls right at factory horsepower on the dyno. the middle cylinders are wettest with oil running down 3 upon inspection. We even went as far as a whole different head, head gasket, and valve train, Nothing, it still smokes. We are rebuilders and restorers, so this isnt the first trip to the rodeo. Is the high oil pressure pushing oil past the sleeve and into the cylinder? HELP!! and thanks.
 
Just a thought but how long have you run it? Maybe the rings havent seaded yet? Or another thing to try is take the air cleaner tube off at the carb and run it on the dyno again, It may be sucking oil from the oil bath air cleaner. Just a thought. Hope you get it figured out, i know how frustrating it can be.
 
thank you for your reply, we have run it for probably 3 tanks of gas, we actually did the restoration last summer and from minute one it has smoked. we actually used a water dyno and lightly pulled it to break it in, after exhausting several options, we have run it towards hot and pulled it some. about the only thing we didnt do was hook it to a plow and work it all day. we did remove intake pipe as well as looked at the small copper line that vents the head to the air cleaner. Anyway, again, thank you for your time.
 
(quoted from post at 08:16:54 04/25/11) Hello,
got a question, We have a 41 H that we restored, we used the factory pistons,New rings, 1 sleeve, had the head completley rebuilt, with valves, guides, springs, tubes you name it. We rebuilt the oil pump and have tremendous oil pressure. 75 pounds, cold, 65 hot. Our problem is that it smokes tremendously, but it has very good compression and pulls right at factory horsepower on the dyno. the middle cylinders are wettest with oil running down 3 upon inspection. We even went as far as a whole different head, head gasket, and valve train, Nothing, it still smokes. We are rebuilders and restorers, so this isnt the first trip to the rodeo. Is the high oil pressure pushing oil past the sleeve and into the cylinder? HELP!! and thanks.
Click to expand...

Did the old pistons measure within specs? Did the 3 old sleeves measure within specs? Are the ring lands of the old pistons within wear tolerances? Are the new rings installed correctly and the gaps staggered?

Kinda sounds like maybe you cut one corner too many.
 
Could that marvelous oil preassure be over oiling under the valve cover, and sucking oil inspite of the new valves and guides? As well as all said before.
 
I would not think that the rings not seating would cause this much oil usage. I would bet there is another issue. Are you real sure you put all the rings back on, and in the correct order.

My dad always counted the rings before installing them. He put an engine together once, and had an extra ring in the pack. He did not count them that first time and ended up taking everything back apart to make sure he did not miss one.
 
When the engine on my C was rebuilt it took forever for the rings to seat. I think after about 7 months it stopped smoking.
 
Are you sure that the rings are in correctly? the first ring is directional, in other words, it has a top and a bottom. Also, is the expander in the oil wiper ring?
 
pulled the pan last night to back off the oil pump, everything looks very good underneath, which is fairly surprising as it had sat stuck in a pasture for 20 years. We lowered the oil pressure down to 50 lbs, which is still above the reccomended setting,( we didnt want to take too much out of the bypass spring, we immeditly noticed an improvement, to the point that at times the exhaust is not visible at all. I agree with the rings possibly being in wrong, however the engine builder has literally rebuilt over 30 ih gas motors and throughout my childhood i never remember one giving him trouble like this.
 
Seth, I am 50+ years old. I have rebuilt numerous engines over the years, tractors, boats, motor cycles, chain saws, lawnmowers, and V-8's. I still make mistakes. The only redeeming thing now is that I can blame it on poor eye sight and gray hair.

I on occasion, have done some things over the years that I had to scratch my head and ask myself, "what idiot did this.........." and all I had to do was look in the mirror.
 
You must log in or register to reply here.

Similar threads

C
TD40 restoration so far/burning oil
Replies
9
Views
381
Janicholson
Janicholson
B
Farmall H Head Studs?
Replies
5
Views
538
blueridge
B
J
44 A Oil Pressure Gauge and Settings
Replies
2
Views
373
wore out
wore out
R
42 JD H surprise loss of oil pressure
Replies
8
Views
872
Ravgardner
R
T
KTA Resto Progress
Replies
12
Views
2K
Tom R S
T
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top