99 200 VMax Compression Test Results Ok?

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skeeter10

Cadet
Joined
Sep 5, 2010
Messages
15
Hello, I am looking at purchasing a 1999 Skeeter ZX200 with a Yamaha VMax 200 OX66 (model V200TLRX). Motor is strong and runs great at all speeds, and starts easily. It will turn 5500 rpms at WOT with 25 pitch yamaha prop. I did a compression check the two bottom cylinders were at 86 and the others were at 91. Does anyone know what the compression should be if this motor is completely healthy (new)? I am concerned. Any help would be greatly appreciated. Thanks.
 
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rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: 99 200 VMax Compression Test Results Ok?

no worries.
on a yamaha V6 motor compare 1&2,3&4 and 5&6.
 
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skeeter10

Cadet
Joined
Sep 5, 2010
Messages
15
Re: 99 200 VMax Compression Test Results Ok?

Thanks for the quick reply!! I didnt sleep last night thinking about it. The seller is asking top dollar for this rig so I want it be right. Boat motor and trailer are mint condition and seller is meticulous.

Thanks again!
 
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rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: 99 200 VMax Compression Test Results Ok?

hopefully he was just as meticulous with the maint.
good luck, running well thats an awesome engine.
however they are hard on lift pumps,the VST needs periodic maint as does the O2 sensor.
 
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