575sci Rebuild and Upgrade
 

I have a pair of 2001 575sci's. They have 500 hours on them and we will be pulling them in the next week or two. Who has the most experience with these. I am trying to decide on what to do. I know I want to upgrade to roller cams and intercoolers but not sure what makes the most sense. I have looked at rebuilding what I have to buying crate engine to building new long blocks. My biggest concern is finding the right builder. I am very hands on and have built performance diesel engines years ago. What I am looking for is a machinist that has excellent equipment as well as someone who knows what to do with the injection system and ecm. I plan on sending the blowers off to get freshened and stripping added. Headers to CMI to get fixed and checked. I am NOT after big power and 650 would be enough. I am after RELIABILTY. Love the boat (43 BT) and the engines as they are. Still runs 72 on GPS. Any help would be appreciated.

Try Potter Performance. hf...

Dean Gellner 216-398-8500

650 is pretty easy to squeeze out of them....you dont even
need intercoolers to do so.

DMPE for the blowers.

Here is a thread from last winters build of a pair of 575sci's.
http://www.offshoreonly.com/forums/g...-crockett.html

Eddie Young.

Thanks and keep em coming. Any suggestions appreciated.

+1

I highly recommend EBM (Eric Betty Marine) 615-714-2944.
Eric does a great job on 575s. You can see mine below.
There's plenty left without loosing reliability.
Eddie is good too.
Regards,
Steve

I like the look of your set up. What size blowers and what hp numbers if you don't mind. Great looking build. Have you ran them yet?

It's a single engine in a 28' Nordic Heat. Actually we've never dynoed the motor in it's current configuration. With the original Merc/GM iron heads and Merc/Weiand 256 plus some other mods it dynoed 713HP.
The current set up has a Blower Shop billet 871, Dart Pro1s, and modified throttle bodies. Obviously Eric has reprogrammed the ECU, and we've upgraded some fuel components too. It runs great with very little major maintenance. The only thing I've done in 3 years is have the blower restripped.
Eric's the man. I would give him a call.........
Regards,
Steve

I would definitily touch base with Eddie Young. He's not that far from you. If its reliability you seek, he will make them reliable. No guess work.

http://www.youngperformancemarine.com/

Wow, you got 500 hours out of them? I have a pair of '05's with 140 hours & wondered what I could expect. Any major repair during the 500 hour stretch?

I've heard great things about HTG Racing rebuilding 575's.

I bought the boat a year ago but knew the shop that did all the work. The engines did have some blower issues, and one did blow a head gasket. Other than that, nothing major on the engines. From all the drive problems he had it wasn't ran easy. I ran them this year and other than two sets of plugs, didn't put a wrench on them. Ran out great with no oil consumption. These engines are mild and the blowers only push about 4 psi. I'm just wanting to freshen before a major failure.

Brad Smith Racing, located in Joplin Missouri is among the best builders of Supercat motors. He builds the vast majority of MTI engines that actually last. He took my SC 600s and upgraded them to 750s. The motors are much more efficient now. They actually make more power now with less boost and heat.