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8N Valve Guide Seals

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Steve

07-10-2000 18:05:04




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I'm attempting to rebuild my 8N's engine and have run into a bit of a problem. I can't get the valve guides in without shaving chunks out of the seals when they pass the ports. I've tried lots of lube, but have had little success! Anyone have any suggestions?




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ZANE

07-10-2000 19:49:54




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 Re: 8N Valve Guide Seals in reply to Steve, 07-10-2000 18:05:04  
I have built a lot of N engines and never had the problem you are describing with the seals. The Ford intake valve guide seals were actually a little small for the bore they went in as I recall and were expected to expand when exposed to the heat and oil of the engine. I don't know who manufactures the intake guide seals but I can invision some 5 year old Chinese boy cutting them out on the kitchen table with something like a cookie cutter.

I don't think I would worry too much about the seals being shaved off when installed. They will still be plenty tight enough to seal out any oil that might accidentally get up that high in the engine. I think the only way any oil could come by those guides anyway is if the tractor were turned upside down. I guess you know that there are no guide seals on the exhause valve guides.

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RICKWI

07-11-2000 14:55:22




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 Re: Re: 8N Valve Guide Seals in reply to ZANE, 07-10-2000 19:49:54  
I bought a kit, valves, springs, guides, keepers, and no seals. The FNH gasket set had no valve seals. I figured they must have been obsoleted, like not needed anymore. How much trouble am I in now?



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Bill(Tx)

07-10-2000 18:43:37




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 Re: 8N Valve Guide Seals in reply to Steve, 07-10-2000 18:05:04  
My fix for this was to sand off a tiny bit of the sharp edges with a drimmel tool, but this was when the block was bare and dried from the hot tank. A clean unassembled block would be best for the work since grit would contaminate everything. I only knew this tip in advance from talking to my tractor mechanic buddy with years of N series experience.

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