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What valves are used in the stock HP500 heads? 1999

Old 03-29-2011, 02:31 PM
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Default What valves are used in the stock HP500 heads? 1999

In a 99 HP500, what valves are used in the iron heads? Which valve would be an exact replacement? For intake or exhaust, brand, part # etc...

Thanks!
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Old 03-29-2011, 08:24 PM
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Default Fixx

Originally Posted by SmurfOnABoat
In a 99 HP500, what valves are used in the iron heads? Which valve would be an exact replacement? For intake or exhaust, brand, part # etc...

Thanks!
2.25 intake and 1.88 ex,,dont know part#'s but i know the exhaust are inconel..if a magnet sticks their not good enough..
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Old 03-30-2011, 02:36 PM
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Originally Posted by SmurfOnABoat
In a 99 HP500, what valves are used in the iron heads? Which valve would be an exact replacement? For intake or exhaust, brand, part # etc...

Thanks!
Intakes are 2.25 x 5.230, .371 (3/8) stem
Exhaust are 1.88 x 5.350, .371 stem

Not sure of the mfg, but as mrfixall has stated the exhausts are inconel. I heard rumors that they were Manley's but who knows for sure.

I have a whole set (almost)if you would like them. Free to good home
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