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Old 05-25-2018, 04:47 AM   #3
awfulbeans
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Join Date: Apr 2013
Location: Austin
Posts: 55

2006 ION-2 Quad Coupe
Default Re: Head and block compatibility

Unfortunately, the engines are significantly different between 06 and 07. The engine designation is still L61, but they're different enough that not a whole lot swaps between them aside from maybe the manifolds, rods, and maybe pistons. Different block, different head, different PCM, different sensors, and most importantly, different tooth count on the crank reluctor wheel (58 on the 07+, vs 6+1 on <07). The 06 has the reluctor cast as part of the crank, so you're boned on using that 06 motor unless you have a good crank AND head from an 07-08 L61.

Your donor options are as follows:

20072008 Chevrolet Cobalt
2007-2008 Chevrolet HHR
20072008 Chevrolet Malibu (Malibu engine may expect to have a power steering pump mounted to the head)
20072008 Pontiac Pursuit/G5
2007 Saturn Ion

You could try just slapping a new bearing in and seeing what happens. I've done this when I did a money shift and spun a bearing, and the car ran fine for another 10k (roommate then killed it by driving it with the temp gauge pegged for 15 minutes). Obviously give it an oil change after 500 miles, then another after another 500-1000 miles. Don't really have anything to lose at this point, but with a low spot, I'd try to source another crank. My money shift scored the journal slightly, but didn't give a low spot.

Best of luck on it.

Last edited by awfulbeans; 05-25-2018 at 04:53 AM..

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