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07-18-2006, 01:40 PM
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#1
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Registered
Join Date: Oct 2005
Location: SW Mich
Posts: 404
32 Renegade w/ 300's
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What would I have if I took blower off 575sci
Just curious, if I bought a boat w/ 575sci's and I wanted to lean to the "turn-key" side vs. blower issues. How dumb would it be to take off blower? (Not saying I would)
What else would that modification require? Reprogram computor module?
Benefits i could think of; dependability, easier on drives (XR's), lower octane gas, could still add better cam.
Disadvantage; speed. torque, hp...
Again, just curious.
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07-18-2006, 01:55 PM
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#2
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VIP Member
 VIP Member
Join Date: Oct 2002
Location: Ivoryton, CT
Posts: 5,011
1999 280 Velocity
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Re: What would I have if I took blower off 575sci
I think the 575sci is a pretty mild engine when compared to other supper charged mills...
I don't believe those engines will run vary well without the supercharger as they have a 7.5:1 compression ratio...
The base engines are a 502 so they could be reworked into a 500HP+ NA engines, but IMO a waste...
__________________
Patrick
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07-18-2006, 03:54 PM
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#3
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Registered
Join Date: Feb 2006
Location: Okie from Muskogee
Posts: 140
39TG, Lip Ship of course!
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Re: What would I have if I took blower off 575sci
I agree, if the motors are in good shape with good maintenence, you shouldn't have any trouble. The 575's are low boost and don't have detination problems that I'm aware of. That's one big reason you pay extra for the merc power... reliability.
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07-18-2006, 05:13 PM
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#4
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Charter Member # 55
 Charter Member
Join Date: Oct 2000
Location: Omaha
Posts: 11,046
32 Active Thunder
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Re: What would I have if I took blower off 575sci
If you want to ditch the SC, you'd be better off to try and trade it complete toward a 500 or 525EFI.
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07-18-2006, 05:27 PM
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#5
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Registered
Join Date: Apr 2005
Location: KENT ISLAND, MARYLAND
Posts: 2,678
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Re: What would I have if I took blower off 575sci
junk
the 575 has such low compression that with out the blower it wont get out of its own way
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07-18-2006, 05:59 PM
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#6
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VIP Member
VIP Member
Join Date: Nov 2002
Location: ankeny,ia.
Posts: 2,794
2002 baja 33 o/l 575sci's
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Re: What would I have if I took blower off 575sci
Quote:
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Originally Posted by BL6
Just curious, if I bought a boat w/ 575sci's and I wanted to lean to the "turn-key" side vs. blower issues. How dumb would it be to take off blower? (Not saying I would)
What else would that modification require? Reprogram computor module?
Benefits i could think of; dependability, easier on drives (XR's), lower octane gas, could still add better cam.
Disadvantage; speed. torque, hp...
Again, just curious.
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Aside from their appetite, and their slight loss of
power when it gets hot out, the 2 I have (so far)
have been flawless.
Neither of them use any oil ( between change intervals)
Got to agree with everyone elses comments so far.
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07-18-2006, 06:35 PM
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#7
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Registered User
Join Date: Feb 2005
Location: St. louis, East Sider
Posts: 891
just a baja and a 12' Jon Boat with Twins
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Re: What would I have if I took blower off 575sci
I'll trade you for a couple of stock 502's even up. 
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07-18-2006, 11:19 PM
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#8
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Registered
Join Date: Oct 2005
Location: SW Mich
Posts: 404
32 Renegade w/ 300's
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Re: What would I have if I took blower off 575sci
All good answers. Just looking at boats right now, a couple with 500efi & one with the 575sci's. thanks
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07-19-2006, 09:50 AM
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#9
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Cigarette #1, I know why!
Charter Member
Join Date: Oct 2000
Posts: 3,064
'00 Scarab Sport CC
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Re: What would I have if I took blower off 575sci
They ARE NOT that thirsty. I have 575's in my TS TG and a buddy has HP500's. Both get almost the same fuel mileage. In fact the 575's get slightly better than his HP500's.
The 575 is a VERY turn key reliable motor. Just like the HP500, you have to do valve springs after 200 - 250 hours. Also you should send the blowers to the blower shop and have them rebuild them. Do that and you should be very reliable and happy. GREAT motor!!!!!!!
__________________
BillR
'00 Scarab Sport 302
'02 Cigarette Top Gun
'02 PQ 340
'00 PQ 280
'98 Scarab 20
'97 Baja Outlaw 20
'72 Checkmate
'65 Glastron
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