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reinstalling cylinders

 
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AirEupora



Joined: 01 Nov 2009
Posts: 186
Location: Dixon, CA

PostPosted: Tue Sep 02, 2014 6:47 am    Post subject: reinstalling cylinders Reply with quote

I pulled #2 and #4 cylinder off as I had a loss of compression because of over heating.

I'm reading JEM0001-4 Overhaul Manual and on page 109 of 197, section 7.3.1, it states "Ensure the gaps are within the limits given in Table 12. 0.50 – 0.60mm is typical in a 97.60mm bore though the gap will vary depending on the exact size of the barrel."

but when you go to Table 12 it give 'N/A" under the Top End Inspection and 0.44 -1.20 under the New Clearances.

Any idea which I should follow?

Rick Stockton
N120EJ Europa
3300L 47 hours


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jetboy



Joined: 22 Jul 2006
Posts: 233

PostPosted: Sun Sep 07, 2014 3:19 pm    Post subject: Re: reinstalling cylinders Reply with quote

its probably related to the new piston to bore clearances

Jaba chat Dec.2008 page 2

'increased from 0.002" to 0.004"

this mentioned again in advisory engine bulletin 17 - and Jaba Chat / Engine news March 2011 page 9

Advice has been that the cylinders should be honed out to twice the earlier stated clearances when removing older cylinders

So I would go with the latest info


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