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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Re: cyl. head valve recess spec.? 310T engine - 1855 tractor

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B A Star

07-02-2014 14:55:26

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Look at how much surface of the cylinder head is the intake and exhaust valves.  Turn the head upside down and install the valves.  Intake valve should project .014" to .029" Exhaust should project .026" to .034".  If you want it to start good run as it should the closer to the maximum numbers listed is better.  You may have to install new valve seats and/or new valves to get the proper measurements. Non AGCO parts have been giving us some problems.  After market cylinder head gaskets are too thick as compared to NOS.  Also if you are installing new aftermarket pistons we have seen some with the machined recession for the exhaust valve that are machined too deep.  these two items will reduces compression rato and causes hard starting and a poor running and performing engine.  Mesure everything before reassembly if you want it to run as a good Oliver should.

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07-02-2014 19:25:31

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 Re: cyl. head valve recess spec.? 310T engine - 1855 tractor in reply to B A Star, 07-02-2014 14:55:26  
was looking at buying a from , any input on there kits?

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07-03-2014 11:05:59

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 Re: cyl. head valve recess spec.? 310T engine - 1855 tractor in reply to jasinpa, 07-02-2014 19:25:31  
just did the 310 overhaul in 2013 and bought everything from agkits (red power brand). have 200 hours on the overhaul and still running great. also there is a service bulletin out there (cant think of it right off, so do a search on this site) for setting valve protrusion

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