DaveB
Long Jeep Fan
- Location
- Holladay, Utah
I picked up a low mileage 4.6 stroker motor from a guy on KSL. He told me it ran great when he took it out. It was out in his canvas garage but it looked like he had covered up all of the openings. I wanted to check everything out before putting it in my Jeep and when I drained the oil I got some water, oil and "chocolate milkshake". There was a little less than a pint of "extra" oil in it. I decided to pull it apart to see if I could figure out where the water came from. It was apparent some had come from the crankcase breather opening. I would have bet that that is where most of it came from. The milkshake in the oil filter showed that he did run it with the water in it. The filter didn't have any metal flakes in it so I'm guessing the bearings are probably OK. I did find some scuffing in each cylinder that is in line with the rod travel and wondered if this might be from the short 258 rods used in the build. While I had it apart I figured out how the shop that built it made the stroker:
92 4.0 block bored .020" not decked
258 4 balance weight crank
258 rods
677P Sealed Power pistons
92 head with a standard valve job
not sure on the cam but its not stock
standard head gasket
24 lb Ford injectors.
With this build the quench is about .115" which is not good. I am going to have a shop check it out to see if anything is cracked that might explain the water and to make sure everything is flat.
I am tempted to use longer 4.0 rods and aftermarket pistons to improve the quench and get better wear on the cylinder. I don't want to have it ping on regular if I can help it. Any thoughts on what others have done on these 4.6 builds ? I have done a lot of reading on the subject but wanted some opinions from those who have done this before.
Here are some pictures of what I found. Any suggestions on a shop that has done these 4.6 strokers that I can trust ?
92 4.0 block bored .020" not decked
258 4 balance weight crank
258 rods
677P Sealed Power pistons
92 head with a standard valve job
not sure on the cam but its not stock
standard head gasket
24 lb Ford injectors.
With this build the quench is about .115" which is not good. I am going to have a shop check it out to see if anything is cracked that might explain the water and to make sure everything is flat.
I am tempted to use longer 4.0 rods and aftermarket pistons to improve the quench and get better wear on the cylinder. I don't want to have it ping on regular if I can help it. Any thoughts on what others have done on these 4.6 builds ? I have done a lot of reading on the subject but wanted some opinions from those who have done this before.
Here are some pictures of what I found. Any suggestions on a shop that has done these 4.6 strokers that I can trust ?
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