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01-04-2004, 01:07 PM
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blue smoke
if anyone could help I would appreciate it very much.
the engine is a 1970/71 sb350 and it has blue smoke comming from the tail-pipe. what does the blue smoke mean. please help 
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01-04-2004, 01:13 PM
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All the time or just when you start it?
Bad valve seals................. Bad ring seal...................... How much oil does it use?
__________________
Ontario Rodders
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01-04-2004, 01:14 PM
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burning oil. most likely blow-by from your piston rings, or maybe from old worn out valve seals.
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01-04-2004, 01:21 PM
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blue smoke
while it is running, the blue smoke is constant. could this mean i need an engine overhaul or what ? i just purchased the truck and have not been abl to get it out on the road, except when i purchased it, it ran fine no smoke at all . besides the weather is a little cold and snowy up here.
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01-04-2004, 01:24 PM
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yup, you're going to have to rebuild it, the rings are shot. It will give you a chance to put some fun parts in it. Nobody wants to hear that their engine is shot, but you can rebuild one a lot easier and a lot cheaper than you might think. Worry not!
K 
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01-04-2004, 01:28 PM
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rebuild sb350
what would be the cost of an engine overhaul? just a guestamate?
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01-04-2004, 01:35 PM
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a guesstimate.....
this applies only if you all ready have the necessary tools......
machine work- @ $ 300- $400 (hot tank, bore 8 holes, valve job on heads, new cam bearings installed.) rebuild kit, northern autoparts @ $150 allready rebuilt, ready to swap out motor- @ $650 on up.....
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01-04-2004, 01:38 PM
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engine overhaul
thanks for your help.
panhead65
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01-04-2004, 01:56 PM
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Variables include machinework and performance parts. For a mild rebuild that you do yourself and minimal machine work, I'll bet you could have it back together for... 5-700 dollars? A lot of it will depend upon if you have to buy new pistons and get it bored out. That is really the most expensive part. I think you can get a rebuild kit through summit for pretty cheap, about 2-300 bucks.
K
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01-04-2004, 02:03 PM
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check it out!
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01-04-2004, 02:13 PM
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Before you go pulling an engine to rebuild it,based on "blue smoke".......verify that ATF is not being pulled into the intake via the vac modulator IF you have an auto trans! It seems to me that a cylinder pressure check would be in order prior to writing off the engine.
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01-04-2004, 03:26 PM
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most definately do a compression test first.
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