recommended carbs ???
08-19-2010, 08:34 AM
#11
Registered
The motors in this boat are 330's with cast iron intakes and the small oval port heads. They turn 4900 rpm. The 850 will do nothing but waste fuel. Go with a 700cfm. If these motors were the 365 mag with the aluminum intake and rect port head you might be ok with the 800. The HP 500 Merc motor uses the 800cfm Holley which is optimal for the stock hp 500. It has more compression it is a 502 and not a 454 and juiced up more then the 330. Plus it turns 5300 not 4900.
Vic would save more fuel with a 66-72 jet verse a 82 jet trying to obtain the proper air fuel mix.
Vic would save more fuel with a 66-72 jet verse a 82 jet trying to obtain the proper air fuel mix.
08-19-2010, 08:57 AM
#12
Registered
08-19-2010, 03:08 PM
#13
Registered
Thread Starter
according to the engine tags on both engines there 365 or 385 NOT 330hps...not that the tags couldnt have been changed
The motors in this boat are 330's with cast iron intakes and the small oval port heads. They turn 4900 rpm. The 850 will do nothing but waste fuel. Go with a 700cfm. If these motors were the 365 mag with the aluminum intake and rect port head you might be ok with the 800. The HP 500 Merc motor uses the 800cfm Holley which is optimal for the stock hp 500. It has more compression it is a 502 and not a 454 and juiced up more then the 330. Plus it turns 5300 not 4900.
Vic would save more fuel with a 66-72 jet verse a 82 jet trying to obtain the proper air fuel mix.
Vic would save more fuel with a 66-72 jet verse a 82 jet trying to obtain the proper air fuel mix.
08-19-2010, 03:20 PM
#14
Geronimo36
Gold Member
I don't think you're going to see much more speed out of the boat, even with small carbs.
The Mirage Plus props ran best on my Panther, just the same as they did for Blue Thunder even though I had TRS and he had Bravo's.
The Mirage "Plus" gives that boat the bow lift it needs. The regular Mirage props weren't as good. I spun the props in and out. In picked up 1-2 mph but the boat handled like chit in quartering seas.
I'd just run it the way it is.. he'll only see 1-2 mph with a carb change... Boat needs more power to run!
The Mirage Plus props ran best on my Panther, just the same as they did for Blue Thunder even though I had TRS and he had Bravo's.
The Mirage "Plus" gives that boat the bow lift it needs. The regular Mirage props weren't as good. I spun the props in and out. In picked up 1-2 mph but the boat handled like chit in quartering seas.
I'd just run it the way it is.. he'll only see 1-2 mph with a carb change... Boat needs more power to run!
Last edited by Panther; 08-19-2010 at 03:22 PM.
08-19-2010, 03:25 PM
#15
Geronimo36
Gold Member
08-19-2010, 03:57 PM
#16
Geronimo36
Gold Member
Here's my vote! Keep the carbs and if he's not planning on doing engine work but maybe just looking for 1-2 mph... Spend the money he would have spent on carbs for a good dual-plane high-rise intake with 2" carb spacers. It might wake that engine up just a lil bit!
Oh yeah, and cut a 1" section out of the plenum divider.
Oh yeah, and cut a 1" section out of the plenum divider.
08-19-2010, 05:02 PM
#17
Registered
Join Date: Nov 2001
Location: Pennsylvania
Posts: 3,385
Likes: 0
Received 0 Likes
on
0 Posts
Dave
08-19-2010, 06:49 PM
#18
Registered
Saw 97mph with it a few weeks back. The only thing that slows me down is the girlfriend.
