New used engine to old transmission


Billgrieve

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Vehicle Year
2008
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Mazda b4000
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Automatic
This is probably going to be a dumb question but I have a 2009 Mazda b4000 and the engine is junk so I went out and bought a new used engine from a 2006 Ford Ranger it’s the same engine with the same vin code..What I’m wondering is can I bolt the new engine to the original transmission that was in the truck without having to worry about any balancing issues ? I was told to mark the bolt on the torque converter and the hole on the fly wheel so when I bolt them back together they would be balanced but because I’m not putting the original engine back in how do I know if they are going to be balanced right..lol I know in my mind it shouldn’t matter as long as the engine and transmission are made to bolt together but want to make sure before putting it together..Thanks
 


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adsm08

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It will be fine.

Honestly, that's not nearly as dumb a question as I was expecting when I read the thread title.
 

RonD

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Not a dumb question at all

Just a heads up
If this is your first automatic transmission install to an engine
Watch is video and save yourself $2,000, :

It applies to all automatics, not a Ford thing
Torque converter is installed on the input shaft and pushed as far back as possible to line up the slots, tabs and splines INSIDE the transmission
Then transmission is bolted to the engine, transmission should slide into place tight against engine, if you have to force them together something is very wrong, STOP
If you force engine and trans together you will break the front pump and have to rebuild the trans to change it


Once engine and trans are bolted together you slide the torque converter forward to bolt it to the flexplate
Have spark plugs out, so you can rotate crank/flex plate to bolt up torque converter
 
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