2.5 200 Block & Front Half

[Merc ModVP]

I have a virgin/never fired all std. bore 91' Mercury 2.5 200 block with a low hour non-matching 5 petal front half. The story on this block from previous owner was used at a Mercury school. It had been assembled and reassembled a few times. I bought this off the board about 3 years ago with plans to build a prostock style 200. That has not happened so maybe someone can use it. I am asking $1000/o.b.o. plus shipping to lower 48 states. I have some other parts I can sell but not enough for complete motor. PM or call/text 817.688.6340. Thanks.

[TEXAS20225]

doesn't this block have narrow transfer ports as well as small exhaust cavity ?? is this your firm price

[YELLOWSS]

If it is a true 1991 is should have exhaust relief slots. I have had a couple of these. The ones I had also were bottom guided too.

[Merc ModVP]

It is a true 91' XRI block without reliefs. I believe all the carb motors had the reliefs.

[YELLOWSS]

I gotcha. I have never seen a 91 xri.

[TEXAS20225]

yes carb were idle relief and efi were not

[myron]

not true I had a 1991 EFI with relief slots and 7 peddle front

[johnmiffco]

from 1991-93
mercury did a lot of mismatched stuff on the new block
some had 7 pedal reeds with slots in ex
some had 5 pedal with no reliefs
some were 2.4 bottom guided
some were new top guided
I saw it as R&D and using up 2.4 parts
the 91-95 blocks have smaller and lower ports than 96 up
also ex cavity was small like a 2.4 than 96 up
this block been assembled 100s of times even though never ran
hope threads not wore out by students overtightening allun

[TEXAS20225]

must have been one of these mother merc brain hacks;) i had a xr4 once that was a 2.0 it had been setting up 11 years( i bought it cheap and was the first guy in to it ) guy who bought it new hated it it had the small gearcase on it, and a stock 2.0 wont hardly twist the 178 gears, it was a nice mota inside though i changed it to horizontal front and some different heads carbs were wh41 same as all the early xr4