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Old 22-08-2009, 08:35 PM   #1
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Country: Guernsey
Occupation: Engineering
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Engines: Turbines mainly!
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496 injection etc on a 502?

Here's another question for those who know...

Could i look to swap the injection system etc from a 496HO onto my 502? I know the 496 is basically tall deck right?
I could adapt an intake manifold to suit a throttle body without too much difficulty, what else would i need to consider?

The reason i ask is there's this 496 i can get which needs a rebuild, and i've got my 502 which is freshly built bottom half with new heads, seems logical to combine the two!

James
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Old 22-08-2009, 10:06 PM   #2
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Country: Guernsey
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Boat make: extreme 24/ scarab 30
Engines: extreme=496HO scarab=twin 5.7L + gale banks twin turbo on trs
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Something to consider is it's very expensive to reprogram the computer. Whipple are the only company licensed by merc to play with it for you if needs be, so if you do end up one day picking up a supercharger you might pay as much to have your engine remapped.

But raylor just re adjust the fuel pressure via an adjustable fuel pressure reg for their 525 kit normally aspirated kits, a reprogram only needed if going for their 600hp NA kit.

And their 525hp kit involves different heads with higher compression and different internal; inlet manifold, different exhaust, and mild cam, and a few shiny bits. So it might be worth having a chat with Ray at raylar see what he thinks.

Personally I wouldn't bother with the HO and just sort out your current 502 it will be cheaper.
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