New SBT Engine Compression

aswetich

Got in 1st drag race

Joined: Jul 2005

Posts: 32
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#1

New SBT Engine Compression

08-23-2005, 12:07 PM

After I installed but before I started my new SBT motor I did a compression test on a cylinder and it was on the low side of the spec. (110 LBS) Is this due to the engine (Rings) not being broke in yet ?? Will the compression go up after the break in ?? It is a Ultra 150 1200 CC.

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Technical Support

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Joined: Mar 2003

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#2

08-23-2005, 12:23 PM

Re: New SBT Engine Compression

The actual number depends on any variables. Did you happen to test your old motor with that same gauge - if so what did you get? Most likely you are just fine, the gauge reading is probably just a bit low. It will only come up a couple psi after break-in.

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