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Old 07-30-2015, 03:21 PM
Jaque De Molay Jaque De Molay is offline
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Join Date: Jul 2015
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Default bought 220,xxx mile 2.9 found 131,xxx mile 4.0 in the junkyard

A kid I went to boy scouts with spent 3,500 on a good condition 1990 ranger. He blew the clutch in it and coolant is disapearing, but i think it's a head gasket not a cylinder head crack, will find out i'm pulling the motor to fix. I found a junkyard 1994 explorer that would seem to have been speeding in the left hand lane when it hit traffic, driver dove for the emergency land and hit the two car's on their corner before he slid down the freeway barricade. Engine should be in good shape, it's a 4.0 and i bough it with 31,000 miles on the odometer, seems to be 131, whereas the friend of mine was told his ranger was 120,000 and it seems to be 220,000. I bought the truck off him and am wishing the 4.0 swap was easier but i might just put a clutch and a head gasket in this thing and drive it. The 4.0 intake hangs over where the 2.9 cap and rotor would be, it might be feasible to cut into the intake and make room for the cap and rotor, but the computer would likely not run the motor, as it has preprogrammed parameters and would not be able to compensante for such a large increase in displacement. So I think i will tarp the motor and save it for another project. Maybe I will buy a broken explorer for a wife one day. Maybe I will figure out more about this 4.0 swap in the future, one day get a 4.0 computer and wiring harness from another junkyard explorer and do the swap and a manual transmission rebuild when this 2.9 with new headgasket and clutch gives up the ghost. If anybody has any links on the 4.0 swap that'd be great. I am not afraid of turning bolts, but swapping computers sounds messy, though not as messy on a manual as an automatic, i am not sure how the computer and dash instrument cluster can be mated to a different computer and still work.

The truck is pretty nice, previous owners to my friend had it painted, lifted, rims and tires, bed is rhino lined with a tool box, 4 kenwood speakers, and all such. Just time for a clutch and headgasket. Then me and my friend with a nissan frontier can go 4x4ing finally!
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Old 08-03-2015, 12:37 PM
tcbaklash tcbaklash is offline
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Default Re: bought 220,xxx mile 2.9 found 131,xxx mile 4.0 in the junkyard

I went chasing my 2.9 issue, and it's a never-ending rabbit hole. I'd take off the heads and check the gasket and flatness of the heads. If the heads are warped, just scrap the engine...
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'94 4.0L swap, 31" BFG A/T KO, 2" Rancho lift

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