Need 525 EFI Flush Kits
 

Need to install flush kits on my 525's. Have searched the forums and have not really found anything. I have the first generation 525's , wondering if I could mount the later generation 525 kits to my older engines. What have you guys with these engines done for flushing? Have strainers on my 10 meter , makes it easy to flush but don't want to install them on the lightning due to space constraints and the cost . Also cant seem to find the part numbers for the factory flush kits. Need help / ideas please!

You're probably not going to want to hear this, but you probably should install strainers for those 525's. That will make installing flush lines fairly simple and also give you some protection from sucking bad stuff up and destroying the sea pumps which will result in you having to chase pieces of impeller all through the system. Additionally, 525 headers are very prone to damage when overheated so you get a double whammy there.

Without the strainers, the only other thing I can think of is to put a tee in the hose from the outdrive to the sea pump and tie those to a hose inlet but I would recommend against doing this. Best option is through strainers..

Thanks for responding Hy , was hoping you would. I know you are right and its the headers that I really want to flush after use. I have been draining them and spraying wd-40 into them when I get back to the lift for 2 seasons , kind of a pain and not exactly eco friendly. Am I mistaken in thinking the newer version 525's have a flush port ?

My 525's are 2008 and do not have a flush port. Maybe later models do but I'm not aware of that. I've also heard of spraying WD-40 in the headers, but I've also heard that WD-40 can harm rubber; maybe someone else can chime in on that.

The flush fittings/kits are normally supplied and installed by the builder. They typically are not included with the engine/drive package.

Mercruiser does offer add on flush kits for the raw water side of things. If you need anything let me know. Also what Volvo Penta incorporated into the raw water inlet cooling hose would work as well. I actually like theirs better because it has a screw on cap and the water hose screws into that when the cap is removed

Here is what Merc has in the link

http://www.marineengine.com/parts/me...alog-01213.htm

It is not hard to do your own set up with a on / off valve and some nice fittings and the correct length and diameter of a quality reinforced engine water hose(s) that T's into the raw water inlet cooling hose. I have done them before that turned out very nice.

here is OEM Volvo penta flush kit that they install on their engines at the factory. Just some info for whomever. You can make that hose however long to mount it however and just buy the parts - and the correct diameter 3 way hose adapter.

http://www.marinepartsexpress.com/engine_flush.html

Last one for now- Volvo Penta for saltwater apps sells this kit that has worked very well. No garden hose needed hooked in fittings but a water supply at engine idling is needed.. I understand you have a Merc 525 but that does not mean anything setting up a system. Just adding this for whomever.

http://www.marinepartsexpress.com/pr...ushing_kit.pdf

Thanks guy's , nice to have a few options. This is the first offshore boat I've owned without strainers, might just bite the bullet. Bup, thanks for posting up some links for me , appreciate the help!!

I fit strainers in my 32, you should have plenty of room if it's a Bravo boat.

BUP/John, where do those brackets mount that come with the Mercury/Mercruiser kits?

I bought Mercury kits many years ago, but could not find a place that the supplied brackets were designed to fit. Also, the connectors that shipped were not panel mount.
I plan to upgrade them to something from here; which looks family to the original parts supplied in the Merc kit:
http://www.usplastic.com/catalog/ite...lickid=popcorn
http://www.usplastic.com/catalog/ite...4758&catid=926 <----these are panel mount

Brian here is a pic.

Since I do not know how to post my own pics up here - I found this one for now.

http://www.stripersonline.com/image/...50/height/1000

hope that helps somewhat. I have installed the Merc ones and even for the 496 as well. Actually I like them for an after the fact install. The Volvo is cheaper as I just the buy the parts and then buy my own water cooling hose since I am dealer for MPI marine water & exhaust hoses and fuel lines.

I have made my own brackets or used mercs as well. I also use & fabbed composite food cutting boards for a mounting persay bracket for the hose and its connector. The composite food cutting boards, I cut and shape how ever and then finish out. You can find some in many colors as well. I even painted some with spray paint for plastics, those came out nice - even a close match to Merc racing Blue done a bunch of those that came out really nice...

The cutting boards are very strong and cheap to buy and never will corrode. Keep in mind it also makes a support for the hose and mount for the connector however you fabbed it. You can mount that basically anywhere in the engine compartment with a long enough hose attached for the garden hose to connect to. Just an FYI