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Originally Posted by Monaco20
(Post 4657718)
https://cimg9.ibsrv.net/gimg/www.off...f3801c0f99.png
Nice package, I have been thinking about install a Procharger on my 496 HO, with a mild boost 3,5 psi should give me aprox 550 HP |
Originally Posted by boatfreak
(Post 4657720)
If you enjoy using your boat without wondering if the engine is going to grenade every time you take it out I would advise against that.
The cast pistons cant handle it. If you upgrade the pistons, rockers and valve springs you might have a chance. Otherwise several of us have proven that the 496 isnt a great platform to upgrade with bolt-ons unless you upgrade the internals. |
Originally Posted by Monaco20
(Post 4657708)
I sent the pictures to Custom Marine and they confirmed that they are CMI top split headers sold in the 90s replaced by the CMI Sport Tubes
Price at the time they where sold aprox 3.500 usd You will see 0-1 mph if you are lucky. |
20 year old headers=15 year old leaks. |
Well Normally I agree with that :-)
These headers has very few hours on them, garage kept the last 10 years ... |
I have also heard that, I have a couple of friends that has 300 hour plus on a stock 496 HO with this Procharger
one with 5,0 Psi and the other has 3,5 psi pressure. Both says that a lot depend on the hand on the trotle ;-) Again it can also be that they have been lucky so far... I am very unsure about this, so probably I want do it ;-) |
Originally Posted by Monaco20
(Post 4657718)
https://cimg9.ibsrv.net/gimg/www.off...f3801c0f99.png
Nice package, I have been thinking about install a Procharger on my 496 HO, with a mild boost 3,5 psi should give me aprox 550 HP Probably need to upgrade your drive and prop, maybe raise the x-dimension by fitting a shortie. Have you got full hydraulic steering? What size tabs are you running? Blueprinting the hull, tearing the cabin out to lighten her up..... Where does it end? I would leave stock alone, everything I've read says the 496ho is a great engine if it's left alone. Just run it sensibly and service it, you'll get trouble free boating. That's why I bought one. :) RR . |
I had a Whipple charger kit running 7-8lbs.boost on a 2004 HO that ran perfect for 5 yrs. Sold it to a friend of mine who ran it 2 more years. Then he sold it.... Totally stock
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Originally Posted by rak rua
(Post 4657815)
sounds good in theory. Simply bolt on an extra 125 hp, how easy is that? Probably need to upgrade your drive and prop, maybe raise the x-dimension by fitting a shortie. Have you got full hydraulic steering? What size tabs are you running? Blueprinting the hull, tearing the cabin out to lighten her up..... Where does it end? I would leave stock alone, everything i've read says the 496ho is a great engine if it's left alone. Just run it sensibly and service it, you'll get trouble free boating. That's why i bought one. :) rr . |
Thanks for the reply ;-)
And yes my plan was to be all stock, have given me 3 seasons with care free boating ;) I am not a crazy speed freak at all, then I Would had another boat, not a Fromula 271 Sr1. Most of my boating are done at 40 mph 3600 rpm or slower and a Poker Run now and then. It would have been fun to go 70 mph + when I want to though ;-) Now I am doing 63,6 GPS mph .. Mirage 23+ prop drive ratio 1:5 I have an almost new Bravo1 X drive and 280S K-Plane, No hydralic steering yet.. |
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