Seeking 575SCI Info
#1
Seeking 575SCI Info
I’m looking to get input / pros and cons on the 575’s. I’m looking at a pair that are fresh rebuilds along with fresh rebuilt blowers from DMPE. Just looking for some input from ppl who have experience with these engines. I’m aware of the Eddie Young throttle body upgrade which is something I plan on doing. Is there anything else to know about or lack of parts availability with them? TIA
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Scarab Sc1 (04-29-2024)
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dykstra (04-29-2024), Scarab Sc1 (04-29-2024)
#4
thank you for the reply! These are now 509’s with hyd roller cams, dart 320 heads. Do you know of any parts availability issues?
#5
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I loved the one that I had. In stock form they have a flat tappet cam and iron heads. That looks like it has been addressed with these builds.. I believe the injectors are NLA, but with the YPM throttle plate update that isn't a problem. If DMPE just went through the blowers, I wouldn't be a bit afraid of them.
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Mtb_05 (04-29-2024)
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OLDRAT (04-30-2024)
#8
So you’re running factory TBI? Haven’t upgraded to Eddie Young upgrade? Have read and spoke with him directly and it’s supposed to make a big difference. I have XZ drives they will be fine
#9
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So I was Eddie Young's guinea pig for the 575 throttle body/ injector plate setup. The prototype and tuning was done with my engine. Pretty much the only 575 specific issues that I had with mine in stock form was dripping injectors and it would need an IAC valve annually. The injector problems are solved with the new injector plate. It ran perfectly after the upgrade. I ended up building mine with a roller cam and brodix heads. The last time it was on the dyno, I believe it made around 760 hp with a smaller pulley. Overall a great engine and I never had any problem with sourcing parts. The sensors are the same as the rest of the Merc EFI engines and are also available from GM or auto parts stores. It uses a standard EST distributor that is available everywhere. I wouldn't hesitate to own a pair of 575's personally. I really like them for their simplicity and ease of upgrading.
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hogie roll (04-30-2024)
#10
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Intake manifolds get eaten up. I just replaced both of mine "got them from Hardin Marine"-Merc is NLA. I have had two boats with them and have no major complaints--super chillers and Whipples bring them to life.
Joe
Joe
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Quinlan (05-06-2024)