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Old 03-15-2010, 12:08 PM   #1
chuckneste
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Default 1984 Magna 700 rebuild

Hello All,

I am thinking about buying a magna with 25 k and low compression in 1 cylinder. I have rebuilt a blaster 200 2 stroke without incident and want another project( I know that these need to be timed) What should my compression read and how hard is it to rebuild. I am hoping to get away with a new hone and rings but will measure the cylinder for ware. I assume it should be bored out if its over .004. Any coments or opinions? Can this be done on the bike or does the engine have to be removed. I will buy a manual if I decide to buy it for reference so i dont need step by step. Any other info is appreciated. The bike is not a basket case . Any parts websites are appreciated as well

Chuck
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Old 03-15-2010, 12:56 PM   #2
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Boring is not possible. An '84 Magna with 25K on it is about to blow the tranny. All those early Magnas blow the tranny. They were awuful in quality. If it has low compression at 24K miles it's because it has had the living shyt run out of it. I had one of these bikes. They are a cast iron bytch to work on. Parts are expensive. The top ends are weak and cam failures are common. Finally the radiators are too small and they run hot hot hot. Buying one of these is a big mistake.

I learned all this the hard way. If you buy this bike you will be sorry.
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Old 03-15-2010, 01:12 PM   #3
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Aw, don't mind sezurmama - he's just a crotchety old bastid that never gets no poontang and works at a dead-end job as a Janitor or sumptin' - go ahead an' buy the bike if you want......
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Old 03-15-2010, 01:28 PM   #4
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"Liquid hot Magna flowed down the mountain, destroying all in it's...."

You know the rest.
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Old 03-15-2010, 01:39 PM   #5
chuckneste
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Thanks for the replies. Is there anything worth buying under 1000.00 that might be a better project. I am not looking for a basket case but something that can be repaired if needed without breaking the bank or what should I stay away from.

Chuck
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Old 03-15-2010, 01:56 PM   #6
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If I can get one of these for 700.00 bucks and the compression is not to bad, Can we assume that the head gaskets may be blown or if it ran hot, The cylinder walls become scratched . I understand that magna flows down hill )

Thanks
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Old 03-15-2010, 01:57 PM   #7
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Quote:
Originally Posted by The_AirHawk View Post
Aw, don't mind sezurmama - he's just a crotchety old bastid that never gets no poontang and works at a dead-end job as a Janitor or sumptin' - go ahead an' buy the bike if you want......
If he buys this bike it'll be on your head.
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Old 03-15-2010, 02:06 PM   #8
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Quote:
Originally Posted by chuckneste View Post
Thanks for the replies. Is there anything worth buying under 1000.00 that might be a better project. I am not looking for a basket case but something that can be repaired if needed without breaking the bank or what should I stay away from.

Chuck
Old Kawasaki inline-4s like KZ650s, 750s, 1000s generally last a long time and are fairly easy maintenance. Honda CB650s, 550s. Suzuki GSes. Any of the I-4s are decent. The Honda V-4s are notoriously bad although by 87 with the super Magna the problems had been fixed. Avoid V-4s before 87 and you should be okay. Naturally you can get a bad example of any bike.

Remember that parts are getting spotty on all early 80s bikes.
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Old 03-15-2010, 02:10 PM   #9
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Quote:
Originally Posted by seruzawa View Post
If he buys this bike it'll be on your head.
So long as it's not on my FOOT..... them bloody bastid's is HEAVY......
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Old 03-15-2010, 04:50 PM   #10
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ok, dead deal. Moving on to something else. I will take your advice sine I dont know squat . Thanks for the help

Chuck
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