rhekman
Well-Known Member
- Joined
- Aug 6, 2011
- Messages
- 83
- Reaction score
- 39
- Location
- Lakes Country, Minnesota, USA
- Vehicle Year
- 1995
- Make / Model
- Ford
- Engine Type
- 4.0 V6
- Engine Size
- 4.0
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- Total Lift
- 2"
So after 295,000 miles my '95 4.0 is only running on 4 cylinders. I pulled the engine this week and confirmed I have burnt exhaust valves, and zero compression in cylinders 1 & 3.
I still have more checking to do this weekend, but rod journals look pristine, with only slight discoloration on the stock rod bearings. I plan on micing and plasti-gauging the rods & mains, but the bottom end looks good so far. No sludge in the pan or lifter valley. No lifters were stuck in their bores with no flat spots on the rollers. All the pushrods had about a 1/8" flat spot worn in the tips, and two rockers had pitted valve pads. The cylinder bores look amazing for the mileage, with some cross-hatch still visible, and no ring ridge that can be felt with a fingernail.
The motor was losing about a quart of oil per thousand miles, but I think most of that was from the sieve on the left cylinder bank Ford generously referred to as a "valve cover". There wasn't much for blue smoke in the exhaust after startup. But there was plenty of sludge down the outside of the block on both sides, and below the rear main seal. The truck has been marking its territory right below either side of the bell housing when parked for a couple years now.
"Well there's your problem lady"
Here's the parts list I have put together so far. Does anyone have any suggestions or recommendations for parts or things I should check? I have a decent amount of experience for a hobbyist, but this is the most extensive tear-down of an engine I've ever done.
I still have more checking to do this weekend, but rod journals look pristine, with only slight discoloration on the stock rod bearings. I plan on micing and plasti-gauging the rods & mains, but the bottom end looks good so far. No sludge in the pan or lifter valley. No lifters were stuck in their bores with no flat spots on the rollers. All the pushrods had about a 1/8" flat spot worn in the tips, and two rockers had pitted valve pads. The cylinder bores look amazing for the mileage, with some cross-hatch still visible, and no ring ridge that can be felt with a fingernail.
The motor was losing about a quart of oil per thousand miles, but I think most of that was from the sieve on the left cylinder bank Ford generously referred to as a "valve cover". There wasn't much for blue smoke in the exhaust after startup. But there was plenty of sludge down the outside of the block on both sides, and below the rear main seal. The truck has been marking its territory right below either side of the bell housing when parked for a couple years now.
"Well there's your problem lady"
Here's the parts list I have put together so far. Does anyone have any suggestions or recommendations for parts or things I should check? I have a decent amount of experience for a hobbyist, but this is the most extensive tear-down of an engine I've ever done.
Part Description | Part Number | Qty | Price | Unit Total |
Valve Job (inc. Seats, Grind, Seals) | Machine Shop | 1 | $425.00 | $425.00 |
Head Gasket – Left | FEL-PRO 544SD | 1 | $31.79 | $31.79 |
Head Gasket – Right | FEL-PRO 545SD | 1 | $32.79 | $32.79 |
Intake/Valve Cover Gasket | VICTOR REINZ 151057601 | 1 | $28.79 | $28.79 |
Crankshaft Seal (Front) | NATIONAL 473560N | 1 | $6.38 | $6.38 |
Crankshaft Seal w/Sleeve(Rear) | FEL-PRO BS40647 | 1 | $19.14 | $19.14 |
Oil Pan Gasket | FEL-PRO OS34309R | 1 | $26.79 | $26.79 |
Timing Cover Gasket | FEL-PRO TCS45291 | 1 | $6.95 | $6.95 |
Oil Pump (High Volume) | Melling M328 | 1 | $133.79 | $133.79 |
Oil Pump Pickup & Screen | Melling 345S | 1 | $46.79 | $46.79 |
Oil Filter Adapter o-ring | MAHLE 72115 | 1 | $0.09 | $0.09 |
Timing Set | Melling 33SRH64AS | 1 | $67.79 | $67.79 |
Rod Bearings (Std) | ENGINETECH BB625J | 1 | $12.70 | $12.70 |
Piston Ring Set (Std size) | SEALED POWER E613K | 1 | $61.79 | $61.79 |
Head Bolts | MAHLE GS33221 | 1 | $6.91 | $6.91 |
Serpentine Belt (w/AC) | Goodyear Poly-V 4060872 | 1 | $26.38 | $26.38 |
Lower Rad Hose | MOTORCRAFT KM6678 | 1 | $23.97 | $23.97 |
Camshaft | Berry Cams Custom Grind | 1 | $180.00 | $180.00 |
Pushrods | MELLING MPR471 | 12 | $3.41 | $40.92 |
Rocker Arms | MELLING MR927 | 12 | $5.57 | $66.84 |
Motor Mount (4WD Left) | Anchor 2642 | 1 | $6.32 | $6.32 |
Motor Mount (Right) | Anchor 2641 | 1 | $6.39 | $6.39 |
Coolant Temp Sensor (w/Gauge) | ULTRA-POWER 1T1116 | 1 | $1.38 | $1.38 |
| | | Total: | $1,259.69 |