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Z31 300ZX(T) 1984-1989 Zs - Engine and Chassis Discussion


       
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Old Apr 23rd, 2008, 12:26 PM   #16 (permalink)
mwolvin
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The timing belt itself should have white lines on it that line up with the indentations on the camshaft sprockets and the keyhole for the crankshaft. The FSM has a very specific procedure to follow and a pretty good diagram on what to look for. Make sure the rockers are loosened enough to not move the valves before turning the camshafts-- the resistance you are feeling when turning the cam's is probably the camshaft actuating the valves-- you don't want the valves being moved until after the belt is installed.
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Old Apr 26th, 2008, 03:37 PM   #17 (permalink)
Brother_Dave
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I'm sure this is a stupid question, but would I need to put ALL the belts back on to crank it and see if i got it right? As of now all I've put back on is the harmonic balancer. Once I crank it, and push on the gas. It "kind of" turns over and shakes and bangs. At this point, I'm about to put all the parts I've taken off in a bag, and put it up for sale, but I want to make sure I've tried everything else first.
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Old Apr 27th, 2008, 12:06 PM   #18 (permalink)
thezman
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no you don't have to have all the belts on just the timing belt and harmonic balancer. just make sure you got your timing right. and keep in mind that you have no working water pump so if it does crank it will get hot very very quickly.
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Old Apr 28th, 2008, 01:27 PM   #19 (permalink)
Spongerider
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Worse case, go buy a rebuilt/used engine. I'm sure they are affordable. I would do a compression check to make sure the the valves aren't bent. I believe valve jobs run about $100 a head.

Don't give up!
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