- Joined
- Oct 27, 2020
- Messages
- 122
- Reaction score
- 65
- Points
- 28
- Location
- Oahu, Hawaii
- Vehicle Year
- 1991
- Make / Model
- Ford Ranger
- Engine Type
- 4.0 V6
- Transmission
- Manual
- 2WD / 4WD
- 4WD
1991 XLT extended cab
4.0 L
200k miles
Auto-to-manual trans conversion
Quick history on my issue: Got the truck from my next door neighbor back in 2016 for free. He had overheated the motor and blew a head gasket. I picked up some new heads and reused the valve train. Ran perfect for a couple years and then ended up blowing head gasket again due to minor overheating. Had heads resurfaced 0.010" to clean up and installed new head gaskets. Ran for about a year no problem before developing a "minor' head gasket leak once again. For this one, I used Blue Devil sealer and haven't had any issues for the last two years until now. Over the weekend truck began misfiring and blowing white smoke and water out the exhaust. It did this WITHOUT overheating (coolant system has been working perfect). inspection of plugs shows fouling in Cylinder #1. I have always used Felpro gaskets.
My plan is to fix it right (again). I plan to remove the heads and bring to my machinist for inspection. If they need to be resurfaced, how much more can I safely go? What can I expect in performance after resurfacing (ie: detonation, etc...)?
4.0 L
200k miles
Auto-to-manual trans conversion
Quick history on my issue: Got the truck from my next door neighbor back in 2016 for free. He had overheated the motor and blew a head gasket. I picked up some new heads and reused the valve train. Ran perfect for a couple years and then ended up blowing head gasket again due to minor overheating. Had heads resurfaced 0.010" to clean up and installed new head gaskets. Ran for about a year no problem before developing a "minor' head gasket leak once again. For this one, I used Blue Devil sealer and haven't had any issues for the last two years until now. Over the weekend truck began misfiring and blowing white smoke and water out the exhaust. It did this WITHOUT overheating (coolant system has been working perfect). inspection of plugs shows fouling in Cylinder #1. I have always used Felpro gaskets.
My plan is to fix it right (again). I plan to remove the heads and bring to my machinist for inspection. If they need to be resurfaced, how much more can I safely go? What can I expect in performance after resurfacing (ie: detonation, etc...)?