What valves are used in the stock HP500 heads? 1999

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03-29-2011, 02:31 PM

SmurfOnABoat

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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!

03-29-2011, 08:24 PM

FIXX

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Fixx

Quote:

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..

03-30-2011, 02:36 PM

Eliminator28

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Quote:

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