Posted by JCSinGA on October 30, 2007 at 19:33:23 from (75.90.19.124):
Hey folks, I have a '99 Explorer I bought to resale that needs a transmission. It has the overhead valve (old pushrod style) 4.0 V6 engine with the 5R55E trans.
I also purchased a rolled '00 Explorer as a donor vehicle that has the 4.0 SOHC engine and the 5R55E trans.
Junkyards with exchange info. tell me the 2 transmissions are not interchangeable but they cannot tell me why. The only visible difference (looking from underneath, the OHV trans. is not out yet) is the OHV trans. has a bump in the bottom of the pan the SOHC trans does not, I assume is probably hiding an extra solenoid of some sort in there. Mabye the torque curve between the 2 engines are different? Mabye need to keep the OHV torque converter in it?
I'd appreciate any info anyone had on this. Thanks
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Today's Featured Article - Tuning-Up Your Tractor: Secondary Ignition Wires and Distributor - by Curtis Von Fange. In our last episode we spent the entire day checking out the spark plugs. Is that efficency? Actually, it took more time to explain than it really did to do the inspection. At any rate we decided that a compression test was in order so we could verify the internal engine status. That way we wouldn't buy any tune up parts until we were sure that the engine was in reasonable mechanical condition. Our tests showed a fictional compression reading of 85, 80, 82 and 86 psi. That is well within a
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