575Sci Owners
01-02-2013 | 01:40 PM
#41
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Joined: Jan 2008
Posts: 2,357
Likes: 2
From: San Diego
Here's a link to our 575sci conversions to 871s.
Polished 871s are $3750.00 per engine.
http://www.dyersblowers.com/187/1676.html
Bill Dyer
Polished 871s are $3750.00 per engine.
http://www.dyersblowers.com/187/1676.html
Bill Dyer
01-02-2013 | 03:22 PM
#42
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Joined: Jan 2008
Posts: 2,357
Likes: 2
From: San Diego
Finish the install and took it out yesterday afternoon. She ran great with no problems. 97degrees and I did 1 WOT run, boost was right at 5 lbs spinning Lab 30P and hitting the rev limiter. solid 85 MPH. Did not think I would be that fast with a non step 12000lbs boat. I am a happy camper. If anyone is thinking about doing this upgrade to the 575, don't hesitate it's well worth it. Let me know if you have any questions.
01-18-2013 | 01:44 PM
#44
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Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
01-18-2013 | 09:17 PM
#47
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Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
That's awesome. Pretty much what I gained going from 250 blowers to 420 blowers.
Im Not anti intercooler, but I don't know many guys running roots who installed chillers under their blowers and picked up 5mph or better. Especially in a boat like a 40 outlaw! Good stuff.
Now try cranking the boost up another 1-2psi, and report back. The 871 will do it no problem.
Im Not anti intercooler, but I don't know many guys running roots who installed chillers under their blowers and picked up 5mph or better. Especially in a boat like a 40 outlaw! Good stuff.
Now try cranking the boost up another 1-2psi, and report back. The 871 will do it no problem.
01-18-2013 | 10:08 PM
#48
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Joined: Jul 2007
Posts: 3,648
Likes: 32
From: Oneida Lake NY
That's awesome. Pretty much what I gained going from 250 blowers to 420 blowers.
Im Not anti intercooler, but I don't know many guys running roots who installed chillers under their blowers and picked up 5mph or better. Especially in a boat like a 40 outlaw! Good stuff.
Now try cranking the boost up another 1-2psi, and report back. The 871 will do it no problem.
Im Not anti intercooler, but I don't know many guys running roots who installed chillers under their blowers and picked up 5mph or better. Especially in a boat like a 40 outlaw! Good stuff.
Now try cranking the boost up another 1-2psi, and report back. The 871 will do it no problem.
Those giant satin finish blowers are just beggin tk be painted merc blue, I think they would look sick!
01-19-2013 | 10:05 AM
#50
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Joined: Jul 2007
Posts: 3,648
Likes: 32
From: Oneida Lake NY
full roller conversion
3.5 pulley
ECU reflash
120 degree stat
plumbing for chillers but going to test without to start.
My objective was to improve more than it was to add speed. I thought the boat performed well on top stock, and was very reliable.
My issues were idle, loading up, soot/extreme richness, and known HG failures. The cam change was a give in, seeing that we had the heads off.
I have to say if I did not read oso I most likely would have left them in and just did an ecu and pulley.....the talk on this site scared me into tearing the heads and cams out of engines with 60 hrs!
My engines and boat also sat for 8 years, showing only 3 hrs on the ecus. Builder saw signs of spring fatigue on a few valves and the edge of an intake lifter was missing tiny pieces and marked the cam. Lower end is perfect.
Man I ramble.......sorry, back to the OP
