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01-06-2006, 06:10 PM
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#1
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
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Posts: 1,223
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engine question
anyone know the power difference between an early 80s 2.4 and a 200 hp xr2, just weighing up options for motivation
thanks,
jamie
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01-06-2006, 11:55 PM
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#2
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
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how early 80's?
cus before 1983 ish power was measured at crank so a 200hp is only a 175
but a 200 2.4 and a 200xr2 will be same power but 2.4 will have more torque and rev less so that means less maintainance
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02-06-2006, 12:01 AM
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#3
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
Posts: 1,693
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Quote:
Originally posted by Burty
how early 80's?
cus before 1983 ish power was measured at crank so a 200hp is only a 175
but a 200 2.4 and a 200xr2 will be same power but 2.4 will have more torque and rev less so that means less maintainance
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except the 200 xr2's are 197 hp stock so you will have another 3 hp
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02-06-2006, 07:48 AM
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#4
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hello
Join Date: Mar 2004
Posts: 2,739
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I doubt all 200 XR2's are exactly 197hp and I doubt that all 2.4 200's are exactly 200hp so its pretty much as Burty said. If your 2.4 is old enough to not have oil injection and has a 16 amp stator and assuming its in good nick you will be able to rev it in the high 6's which nearly as much as an XR2 but it will have greater bottom end punch.
just FYI the old crankshaft rated 2.4 200 (which is 175hp in todays money as Burty said) is a vertical read motor so make sure you get a horizontal one.
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02-06-2006, 05:49 PM
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#5
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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it has oil injection but has been blocked off
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02-06-2006, 05:57 PM
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#6
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
Posts: 1,693
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Quote:
Originally posted by Johnny Boat Dude
I doubt all 200 XR2's are exactly 197hp
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only when stock
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02-06-2006, 06:02 PM
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#7
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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so what mods can you do to them and what power can you get out of them?
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02-06-2006, 06:15 PM
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#8
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
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I think the max hp on xr2 you can get is 230 on pump gas
you can get them finger ported, lightened balanced, high compression heads
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02-06-2006, 06:34 PM
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#9
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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i'd stick with a standard 2.4 less hastle and you will always ultimately get more power from the same mods
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02-06-2006, 06:39 PM
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#10
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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ta,no substitute for ccs a! i just weighing up buying our old engine,i know its good but i would like to get pointed gearbox for it and buy the time ive spent that sort of money it takes me into xr2 price range where i think spares are more easy to come by.choices choices choices????
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02-06-2006, 08:07 PM
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#11
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hello
Join Date: Mar 2004
Posts: 2,739
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Quote:
Originally posted by PuppiesBalls
only when stock
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even when stock!!!
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