08-06-2009, 10:35 AM
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#6
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Re: need help switching motors
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All Turbos
Join Date: Oct 2007
Location: 30 mi NE.of Evansville In
My Ride: 84 Turbo Z, 91 Shelb
Engine: 2.2-2.5
Induct: Turbo
1/4: 0.000
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The 84-85 Turbo engines are pretty strong.They had the good rods and the pistons are as good as any Mahle cast piston.The blocks are strong enough for at least 300hp.The 86 is the junk turbo engine(weak rods).What happened to your engine can't happen with the pressed pins of the early engines. Pin locks and floating pins are only to make assembly easier IMHO. Also The early engine will have the good G head but while it will run okay in the 89 ,a little more timing should be in order(up to 16 degrees).A custom cal would be optimum but I understand you're only using this engine till you rebuild your 89, so just drive it as is, it'll be fine.
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