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Thread: School me on 2.5's Merc's
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07-18-2021, 05:45 AM #16
Awesome thanks Josh! I don’t suppose you have a part number for those gaskets or know where to source them? Are you talking about the European racing XR2 or the 80’s fishin mota XR2? I have one of those sitting here if so maybe it wood be easier to use the plate off that?
Hydrostream dreamin
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07-18-2021, 08:14 AM #17
80's fishing motor. It is possible to use that plate with a 2.5, the EE block I'm building now was on one, I never saw it run but they had the side hole plugged where the pisser hose went on the 2.0. I'm not sure that's a good idea, they did some other sketchy stuff to the cooling system too so...
Josh Peterson
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07-18-2021, 08:27 AM #18
All good thanks again I’ll grind this one np at all. This is getting fun! Although I’m thinking about reducing my rpm goals down to the 7000 range. I don’t really care about what the rpm is so much I have some sweet 28p props that I was looking to spin up high enough to get me to 100 eventually. I can always add a fresh prop with more pitch if I have the grunt to push em which it looks like I may have with these mods.
I am concerned about getting the fuel curve tuned for all this thoughHydrostream dreamin
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07-18-2021, 08:38 AM #19
carb or efi?
Josh Peterson
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07-18-2021, 08:49 AM #20
It’s a 98 200efi
Attachment 490579Hydrostream dreamin
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07-21-2021, 12:13 PM #21
I have a build thread going for mine I figure i'd link it in here if anyone finds this and wants to know where i went with this
https://www.screamandfly.com/showthr...ts-of-mistakes!Hydrostream dreamin
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07-23-2021, 08:11 PM #22Screaming And Flying!
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I’d be careful copying a lot of exhaust chests I’ve seen on this board. Most people go way too far. Find some pictures of stock 280 and Drag chests. Mercury’s engineers aren’t dumb. There’s a reason the Drag chest isn’t hogged out
Erik Kiser
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tlwjkw liked this post
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07-23-2021, 08:41 PM #23
Sage advice I do side on the less is more concept especially because I’m going to run the stock ecu to begin with. Thinking to open the dump and plate, radius the rod slots a bit, clean up the exhaust chest a bit, add stuffers and reeds and that’s the plan so far. I haven’t put the grinder to anything yet
Hydrostream dreamin
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