1950 8N Oil blowing out breather

Ol Reliable still runs well but has been leaking oil out the oil breather for some time and I have low compression.....55-60#'s in all cylinders. The N starts like a champ but I believe the rings are ready for a makeover which will mean it is time to make some space in the garage and perform some surgery. I am guessing i will find the normal things when the engine is taken apart and will purchase a rebuild kit from this site. What dollar amount should I budget for after I have the motor torn apart? I am guessing $1400. Am I a bit low? Hopefully this will be more fun than expensive.

Sounds like a rebuild is in the near future. The price depends on how good you are at avoiding mission creep. $1,400 is not a bad budget for just an engine rebuild as long as the block is not cracked or the head needing to be replaced. I have rebuilt three and none have cost less than $2,500. I am not good at avoiding mission creep.

That $1400 might cover a basic overhaul but not a full rebuild. Things like machine shop work and having the sleeves removed and installed etc etc add up very fast.
Shoot just a sleeve kit is around $500 and that does not cover rod and main bearings and having the crank checked and turned etc.

(quoted from post at 12:28:39 01/03/14) Ol Reliable still runs well but has been leaking oil out the oil breather for some time and I have low compression.....55-60#'s in all cylinders. The N starts like a champ but I believe the rings are ready for a makeover which will mean it is time to make some space in the garage and perform some surgery. I am guessing i will find the normal things when the engine is taken apart and will purchase a rebuild kit from this site. What dollar amount should I budget for after I have the motor torn apart? I am guessing $1400. Am I a bit low? Hopefully this will be more fun than expensive.

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Your baseline cost is roughly $500 for a COMPLETE overhaul kit that includes new sleeves, pistons, rings, bearings, valves, springs, guides, oil pump kit, gaskets, plugs, hoses, belts, etc. That leaves you $900 for machine shop charges and any "extras" you might need or want. Crankshaft grinding and professional block cleaning are a must in my book - figure an additional $200 for that. New engine has to have a new water pump - $50. Add a new clutch and freshly surfaced flywheel while you are at it for another $250 and you still have $450 headroom in your budget. Any additional machine shop work you need will eat into that pretty quickly but you are in the neighborhood with your estimate.

TOH

Maybe prices differ by area. I paid 1000 for machine work and a full rebuild kit that he ordered. Clutch was another 100 or so. The machine shop did sleeves, connecting rods, new freeze plugs, decked the block and head, new ring gear installed, new oil pump, turned the crank, new valve seats. All we did was plasti guage and check tolerances and assemble. He did and excellent job.

WOOOOOO I cant find any previous post from you on this subject. Have I missed something? I had the exact same thing on a 46 2N. The low compression and oil coming out of the sump is possibly due to blowby caused by stuck rings. You need to do the MMO or automatic tranny fluid soak.Its cheap and easy and could save you time and $$$$. All my compression checks started at 30 and I brought up 45, 60,90 and above. Do you want to try it? Checks archives for the handle old he will give you the methods on it.

I've never paid more than $1200 for the whole 9 yards. Parts labor and machine shop work. I pull the engine and pick it up. My neighbor just did his 1950 8N for $1500 because he needed a crankshaft. So $1400 is a good estimate for my part of the world.

I'd run it til it quits & part it out. A lotta guys need original parts to keep theirs going.
You could easily sink $2000 in an $800 tractor, only to wind up with an $1800 tractor. :wink:

mine had the same problem. I had the crank ground. Put in new bearings and rings. I had only one bad sleeve. I bought parts from external_link. They sell sleeves individualy. In the end it cost me about $900.

(quoted from post at 20:28:39 01/03/14) Ol Reliable still runs well but has been leaking oil out the oil breather for some time and I have low compression.....55-60#'s in all cylinders. The N starts like a champ but I believe the rings are ready for a makeover which will mean it is time to make some space in the garage and perform some surgery. I am guessing i will find the normal things when the engine is taken apart and will purchase a rebuild kit from this site. What dollar amount should I budget for after I have the motor torn apart? I am guessing $1400. Am I a bit low? Hopefully this will be more fun than expensive.

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Keep in mind this tractor had been restored when it came to me and had a professional paint job that we had to match.... I did it to cheap but it was fun,,,,

Fill in the blanks are delete what you will not need are can do yourself,,, this one had a diagnostic charge ($80.00) added to the in-house labor because if a issue that lead to a engine rebuild. The wiring and 12V conversion was ratty so I took care of that. No clutch are axle pin work needed...Oil pump rebuild was covered in my labor ...



1950 Ford 8N

1) 8N6051 HEAD GASKET----------------------------------------------------- 8.95
1) 8N ENGINE GASKET SET-------------------------------------------------- 29.95
6) 9N9448 EXHAST GASKETS ------------------------------------------------ 6.00
4) 353454S FREEZE PLUGS --------------------------------------------------- 4.00
1) 91A6266 CAM PLUG -------------------------------------------------------- 2.50
1) 550199 FRONT CRANK SEAL -------------------------------------------- 11.00
4) 5/16 HELI-COILS INSTALLED -------------------------------------------- 16.00
1) MISS NUTS/BOLTS/WASHERS-------------------------------------------- 6.00
1) 192160 CRANK PULLEY COUTTER DRILLED FOR OEM BOLT 60.00
4) CB-200 P-20 .020 ROD BEARINGS “CLEVITE77”---------------------32.00
1) MBK9N633E-010 MAIN BEARING SET CLEVITE77 --------------- 68.00
1) S.60705 PISTON SLEEVE KIT -------------------------------------------- 179.95
4) 21A6207B3 WRIST PIN BUSHINGS-------------------------------------- 8.00
4) SBI EXHAUST SEATS ------------------------------------------------------ 32.00
4) SBI INTAKE SEATS --------------------------------------------------------- 32.00
5) 8BA6507A INTAKE VALVES --------------------------------------------- 30.00
5) 8N6505A EXHAUST VALVES --------------------------------------------- 36.00
9) 8N6513 VALVE SPRINGS -------------------------------------------------- 18.00
18) LOCKS VALVE 7HA6518 ------------------------------------------------- 3.60
10) 8RT6514B RETAINERS VALVE SPRING ---------------------------- 20.00
4) 406512 GUIDE RETAINERS ---------------------------------------------- 4.00
1) APN6600B OIL PUMP KIT ------------------------------------------------- 42.00
1) WATER PUMP GASKET --------------------------------------------------- 1.50
1) 62302 CRANK CLUTCH PILIOT BEARING ---------------------------- 4.00
1) 9N7067 CUP TRANS BEARING ------------------------------------------- 9.00
1) 9N7066 CONE TRANS BEARING ----------------------------------------- 11.50
1) 9N7086 GASKET TRANS ---------------------------------------------------- .75
1) 8N7052A FRONT TRANS SEAL ------------------------------------------- 3.75
1) 1010 OIL FILTER -------------------------------------------------------------- 11.00
1) 8NL10302 ALT BRACKET TOP ------------------------------------------- 25.27
1) 8NL10303 ALT BRACKET ------------------------------------------------- 27.29
1) 8N10304 ALT BRACKET ---------------------------------------------------- 17.05
1) 98NAA5825 ALT PULLEY -------------------------------------------------- 17.54
1) B39 ALT BELT ----------------------------------------------------------------- 9.50
1) ALT PULLEY SPACER ------------------------------------------------------ 1.00
1) S.66575 SOLINOID STRAP STARTER ---------------------------------- 3.63
1) CP8217 TEMP GAUGE ------------------------------------------------------- 19.39
1) S.60654 EXHAUST CLAMP HEAVY DUTY OEM CAST ------------ 6.18
2) 9N3324 OEM LEATHER TIE ROD DUST COVERS ------------------ 30.00
3) #28 HOSE CLAMPS ---------------------------------------------------------- 3.75
1) S.60607 EXHAUST MANIFOLD ------------------------------------------ 65.00
1) MISS WIREING PARTS ----------------------------------------------------- 5.00
1) 8N12112B Bracket Spark Plug Wire---------------------------------------- 9.00

Total parts --------------------------------------------------------------------------- 922.05

Outside labor

Replace Valve seats intake and exhaust---------------------------------------- 64.00
Clean block and parts blast block and head ----------------------------------- 85.00
Install new pin bushings and check rods --------------------------------------- 46.00
Deck block ------------------------------------------------------------------------- 65.00
Install sleeves & fit/hone pistons ----------------------------------------------- 55.00
Grind Crank .010 main & .020 rods ------------------------------------------- 95.00

Total outside labor--------------------------------------------------------------- 410.00

Check engine valve problem
Intake and exhaust seats worn out can not remove intake seats
Remove engine and disassemble
Remove old sleeves
Grinds and fit new valves
Rebuild oil pump
Drill block for valve adjustment
Replace freeze plugs
Install continuous front crank seal
Plastic gauge new crank bearings
Assemble new engine parts
Add temperature gauge adapter in head
Drill dash for gauge
Replace tie rod dust cover
Replace front Transmission seal
Replace front Input Trans bearing and Cup
Adjust Clutch
Dissemble Water Pump and replace gaskets
Clean out oil filer canister
Flush oil lines
Smoke test engine for oil leaks
Smoke test coolant system for leaks
Heli-coil timing/side cover to oil pan bolt holes
Drill out broken bolt in head for coil mount Heli-coil bolt hole

Grind head for piston interference ----------------------------------------------------- 75.00
Rewire tractor
Repair original safety push starter button
Repair starter post -------------------------------------------------------------------------- 80.00
Remove disassemble/rebuild and install engine ------------------------------------- 1000.00
Total in house labor ----------------------------------------------------------------------- 1155.00

Parts ------------------------------------------------------------------------------------------ 922.05
Outside labor-------------------------------------------------------------------------------- 410.00
In house labor ----------------------------------------------------------------------------- 1155.00
Waist disposal shop supplies taxable ----------------------------------------------- 25.00
Gas/oil/coolant ---------------------------------------------------------------------------- 43.94
Sales tax------------------------------------------------------------------------------------- 74.87

Total ---------------------------------------------------------------------------------------- 2630.86









Loaded up and going home

Beautiful work Hobo------Makes no difference if it's a 8N, a P&W R985 or old Harley engines. Good work is good work.