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Old 07-05-2023, 07:10 AM   #1
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Fitting a 2.5 onto XR2 offshore leg.

Hi. I have an offshore XR2 leg and CLE box. I was thinking of taking off the 2.0 xr2 powerhead and putting on a 2.5 Iíve got. I know itíll fit, but Will I have to change anything to make it all work correctly?? Thanks.
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Old 07-05-2023, 09:04 AM   #2
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What 2.5? 200 or 260?
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Old 07-05-2023, 09:36 AM   #3
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Country: England
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Boat name: BANZAI
Boat make: Phantom 20
Engines: Mercury 2.5 Offshore
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Thanks for the reply.
200 ported with 7 petal front end.
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Old 07-05-2023, 09:42 AM   #4
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Check exhaust port size versus adapter. You might have to enlarge these in the adapter. Besides you have to check the cooling. A stock 200 leg has a sandwich plate with a popet cavity that works with tstats and popet in block. 3 options: 1 modify your adapter plate to make it work as the sandwich plate/ 2 remove popet and stats and use same setup as xr2 or 3 put sandwich plate on the offshore leg.
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Old 07-05-2023, 03:23 PM   #5
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Country: England
Location: Somerset
Occupation: Mechanical Engineer
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Boat name: BANZAI
Boat make: Phantom 20
Engines: Mercury 2.5 Offshore
Cruising area: on the water

Join Date: Dec 2017
Location: Somerset
Posts: 139
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Thanks for the reply, I will have a look and get it sorted 🙏
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