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3.4 L Equinox - Torrent engine removal
11-20-2011, 05:36 PM
Post: #1
3.4 L Equinox - Torrent engine removal
Timing sprocket key failed on my daughters 2006 torrent 3.4 L and the sprocket spun on the crank. Replaced crankshaft key but engine still ran rough - no compression in at least one cylinder. Pulled heads and there are marks on pistons where they hit the valves on several cylinders when camshaft timing changed.

Rather than rebuild heads and hope no other issues - Plan to replace engine with a used one My manual says to remove the engine/transaxle/subframe as an assembly out the bottom.

Since I already have engine top end disassembled and heads removed it sure looks easier to pull the engine from the top.- just need to split the engine and transaxle.

I found that the torque convertor can be unbolted through the starter opening. Not sure how many other bolts hold the transaxle to engine and their locatins.

Has anyone pulled a 3.4 L out the top on a GM SUV or car - I assume others front wheel drive with the 3.4 are similar - Grand Am and others ??

If you have pulled a fronmt wheel drive engine this way do you recall any issues - how many bolts hold the transaxle to the engine and their location ??

any help appreciated

thanks
gary
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11-21-2011, 12:26 AM
Post: #2
RE: 3.4 L Equinox - Torrent engine removal
The reason your manual says to pull it from the bottom is because that's the way they put it in at the factory. IOW, whole and complete as a unit, set on the sub frame, with trany and front suspension. Since I have never done this particular job I do not know if you can fudge things from the top as a partial assembly. Perhaps you should take a second look at the job after you have the new / used engine in hand so you can evaluate what goes where and other parts that may need to be swapped over to make it work. IOW, which way will be more work.

Just food for thought... I have done an Astro van, which can only be done from the bottom and let me tell you that once the sub frame is out and away from the car the swap is a piece of cake. The only draw back is you need two floor jacks to steady things and a lift to get the vehicle high enough to clear the sub assembly as you roll it out.

Let us know how you make out and what you decide to do.
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10-28-2012, 07:08 AM (This post was last modified: 10-28-2012 07:28 AM by techman.)
Post: #3
RE: 3.4 L Equinox - Torrent engine removal
(11-20-2011 05:36 PM)Blueacre Wrote:  Timing sprocket key failed on my daughters 2006 torrent 3.4 L and the sprocket spun on the crank. Replaced crankshaft key but engine still ran rough - no compression in at least one cylinder. Pulled heads and there are marks on pistons where they hit the valves on several cylinders when camshaft timing changed.

Rather than rebuild heads and hope no other issues - Plan to replace engine with a used one My manual says to remove the engine/transaxle/subframe as an assembly out the bottom.

Since I already have engine top end disassembled and heads removed it sure looks easier to pull the engine from the top.- just need to split the engine and transaxle.

I found that the torque convertor can be unbolted through the starter opening. Not sure how many other bolts hold the transaxle to engine and their locatins.

Has anyone pulled a 3.4 L out the top on a GM SUV or car - I assume others front wheel drive with the 3.4 are similar - Grand Am and others ??

If you have pulled a fronmt wheel drive engine this way do you recall any issues - how many bolts hold the transaxle to the engine and their location ??

any help appreciated

thanks
gary


Yes you can R&R an Equinox/Torrent engine through the top. Just did it.

This is pretty old thread, however now that it is 2012 there is even a greater probability that there will be others now needing to attempt an engine replacement due to head gasket failure.

I have a 2006 Equinox, 250K (150,000 Miles). Engine started missing one morning, 2 days later it overheated and blew out all the anti freeze (diagnosis head gasket).

Instead of a rebuild I decided on swapping out the engine the only way I have ever done (through the top), and no I am not a mechanic.

The opening at the top is only 18.5 inches. The engine with the manifolds and alternator is closer to 20 inches at some spots.

I decided to pull off the alternator and the manifolds which leaves the width at about 18 inches. The engine came out without incident.

It may have been possible to leave 1 of the manifolds on the engine, however I decided disconnect both from the engine and left the back one connected to the main exhaust because the large bolts to the back were seized quite badly. The bolts on the interconnection pipe between the front and back manifolds came off nicely, I removed the interconnection pipe and front manifold completely to make it easier to get at the fuel line and bolts holding the engine to the transmission.

I am an IT guy by trade now and haven't done an R&R on an engine since I blew the 400 out of my 68 Firebird back in 1980, yes this dates me!! However, changing this engine out was suprisingly easy and saved a couple of thousand dollars. Well worth a weekend.

Good luck. I will check the thread if you have any questions.
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