engine help: can i replace my 4.2 manual equipped engine with one from an auto?

[B6B]

shopping for used engines unfortunately, I came across a decent buy on an 07 salvage s4 with auto tranny (hit in rear/side), was wondering if anyone can confirm (besides alternator being different) if the auto version is compatible with my manual tranny car? I know some cars it matters and some don't, but couldn't confirm through google searching. don't want to buy the car if I cant use the engine. thanks in advance for any help - bob

[ridenickel9]

I do think it's possible... there is one adaption that need to made which is a removal of a piece. Sorry I can't be specific, I'm sure others will clear you up. Good luck! I am going to be doing an engine swap at some point as well. Mine has 196k

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[2004B6S4]

yep from what I've heard the only difference is how it's mated to the transmission. you would just need to take off the flex plate and install a flywheel/clutch instead

[jakeoboy67]

there is a spacer pressed on the end of the crankshaft on the auto engine

[JS4Avant]

I think you need to remove the flex plate for it to work


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[2004B6S4]

there is a spacer pressed on the end of the crankshaft on the auto engine

I wasn't aware of that, sorry if I gave misinformation above... Also, I forgot to mention there is a spacer that goes in between the engine and tranny for the manual (not pressed onto the crank, it sits betwen the mating surfaces kinda like a thick gasket). I'm not sure if it would be there for the auto already

[xhackerekx]

I swap engine from auto s4 to my manual s4 only difference is flexplate vs flywheel . before u installed engine update chain guides and inspect mechanical cam adjusters or just made full timing service like me. u save thousand $$$ .

[jmcS4]

i know for a fact its possible. i just did this to my own car. you need to remove a spacer that behind the flex plate and you're good

[ridenickel9]

Nice pics!

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[B6B]

thank you all for the info