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#1
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'86 302 Balance question
I realize this FSB balance issues have been asked and answered here
before but I have an additional couple questions. I recently bought a vehicle which has a '86 5.0L Mustang engine which vibrated when it ran. I noticed the ring on the harmonic damper was cocked and thinking that was the problem, I bought a new 50 oz. damper to replace it with. When I pulled the bad damper off, I noticed it was a 28 oz model - no wonder the engine vibrated! In checking with the guy who put together this engine he admitted to putting on a 1965 damper - a '65 flywheel too! I checked the flywheel he put on and its an old 160-tooth model. (slap - slap!) Now for my question - I now have a good damper on the engine now but as for the flywheel, should it be a neutral balance or a 50 oz. imbalance? The engine runs pretty vibration free now, so I'm guessing that I need a neutral balance 'wheel. Is that correct? Does the '65 160-tooth flywheel have neutral balance? Do I need to get that old flywheel off of there or should it be OK? Thanks! |
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#2
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Depends on what year the engine (crankshaft) is. The '65 flywheel is a 28oz
imbalance so it too would need to be changed, that is, if it's actually a later model engine. I would be suspicious because a 28oz flywheel on a 50 oz crank would still vibrate like hell. As far as I know there is no "neutral balance" flywheel/flex plate from the factory. It's either 28oz or 50oz imbalance unless you're running a custom crank. Be sure you figure out what you're engine is because an out of balance condition would ruin the engine very quickly. I wouldn't drive it until everything got worked out. Mark "Ironradio" > wrote in message om... >I realize this FSB balance issues have been asked and answered here > before but I have an additional couple questions. > > I recently bought a vehicle which has a '86 5.0L Mustang engine which > vibrated when it ran. I noticed the ring on the harmonic damper was > cocked and thinking that was the problem, I bought a new 50 oz. damper > to replace it with. When I pulled the bad damper off, I noticed it was > a 28 oz model - no wonder the engine vibrated! > > In checking with the guy who put together this engine he admitted to > putting on a 1965 damper - a '65 flywheel too! I checked the flywheel > he put on and its an old 160-tooth model. (slap - slap!) > > Now for my question - I now have a good damper on the engine now but > as for the flywheel, should it be a neutral balance or a 50 oz. > imbalance? The engine runs pretty vibration free now, so I'm guessing > that I need a neutral balance 'wheel. Is that correct? Does the '65 > 160-tooth flywheel have neutral balance? Do I need to get that old > flywheel off of there or should it be OK? > > Thanks! |
#3
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Going on the assumption that its an '86 302 with a 50 oz imbalance, it
now has a 50 oz. imbalanced damper. So is the engine now balanced or does it also need a 50 oz. imbalanced flywheel for a total of 100 oz. of external balance? Does just the damper need the 50 oz. imbalance weight or does the flywheel need one too? Thanks, Dave |
#4
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> Does just the damper need the 50 oz. imbalance
>weight or does the flywheel need one too? Get the 50oz flywheel or flexpate (A/T). You must have this. No other balance will work. DC |
#5
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Early engine use a 28oz imbalance damper and flywheel. later use a 50oz
imbalance damper and flywheel. There's no mixing and matching. "Deadcarnahans" > wrote in message ... >> Does just the damper need the 50 oz. imbalance >>weight or does the flywheel need one too? > > Get the 50oz flywheel or flexpate (A/T). > You must have this. No other balance will work. > > DC |
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