1998 yamaha 4x4 350 big bear motor question
#1
1998 yamaha 4x4 350 big bear motor question
hello: I a 1998 yamaha 350 big bear, I want to buy another motor for it, can anyone tell me what year motors will fit this atv ? I know nothing prior to 98 will work but what about something newer ? will a 400cc motor fit without any mods ? or how about a web site that might be able to provide me with this information. Thank very much for any info you can provide...
#2
There is no engine that will fit without any mods. Your best bet would be to sell the Big Bear and buy something bigger, or you could modify your engine to give it more power, starting with a pipe, jet kit, and aftermarket air filter. A cam would help and some port work would be great. It may be hard to find performance parts for it, though, because most people do not modify their Big Bear.
#3
I think the 350 (348cc) big bear motor never changed and even the 400 (386cc) is just the 348 with a longer 71.5mm stroke vs a 65.5 mm stroke, both motors should be just a plain swap.
1999 Yamaha Big Bear 4X4 ATVs
1999 Yamaha Big Bear 4X4 ATVs
#4
thanks guys for the replys, I bought the machine as salvage, but its 100% complete, the only issue was the motor was partially disassembled but all there. it sat outside for over a year so the motor was pretty wasted. hence the reason i'm looking for a motor. not looking for performance upgrades just a running stock 4x4 motor 98 or newer that will fit. any thoughts
#5
update, found a running 95 400 4x4 motor from a Kodiak. i'm a little nervous because i'm sure i read somewhere that in 98 yamaha made changes to the configuration of the stock 350 motor, (not sure what the changes were) which is why i was looking for something 98 or newer. anyone have any info on this swap ? what the chances all the electrical connections will match up, or the drive shafts...thanks in avance for any info
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#8
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hello: I a 1998 yamaha 350 big bear, I want to buy another motor for it, can anyone tell me what year motors will fit this atv ? I know nothing prior to 98 will work but what about something newer ? will a 400cc motor fit without any mods ? or how about a web site that might be able to provide me with this information. Thank very much for any info you can provide...
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hoopduerr
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06-10-2015 03:00 PM
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