Compression How Much - Yamaha ATV Forum
 
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post #1 of 4 Old 02-10-2005, 08:35 PM Thread Starter
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Compression How Much

How much compression should the YFZ have

om

2005 White/Red YFZ450
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post #2 of 4 Old 02-11-2005, 03:13 AM
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11.9:1

Geoff.

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post #3 of 4 Old 02-11-2005, 03:43 AM
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Quote:
Originally Posted by Aussiequadrider
11.9:1

Geoff.
hes talking about "kicking compression" the compression (psi) the motor shows when doing a compression test. sorry i dont know the answer

former honda rider turned YFZ450 addict!!!!
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post #4 of 4 Old 02-13-2005, 01:20 AM
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Last I heard you cannot properly check the compression, because it has an auto-decompression which aids in starting. Best to do a leak down test, its better anyways since you can pinpoint any problems a little easier.

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