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will a 2V head fit on a 170 pursuit donk?? 

 

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 Post subject: will a 2V head fit on a 170 pursuit donk??
Posted: Mon Feb 19, 2007 6:48 pm 
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hey i have a 2V head that i want to put on the 170 pursuit motor i have in my xm. Will it fit on?? any thing i should know about doing it??
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Ben Beck
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Posted: Mon Feb 19, 2007 7:14 pm 
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Should go straight on but the exhaust manifold is slightly different.
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Posted: Mon Feb 19, 2007 7:27 pm 
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Wow, never heard of anyone wanting to do that lol.

"IF it does go on", i'd say that the 2V would have a bigger combustion chamber being from a 250, by bolting to a 170 it would end up with low compression... That's for that part, not sure if it's a bolt on item or not.
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Posted: Mon Feb 19, 2007 7:55 pm 
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The 2V head fits you just to get a good head gasket for it as like Walker said the combustion chamber is bigger and if you use a standard 141 to 171 head gasket it will last 5 minutes and if you use a standard 250 one, the metal ring around the cylinder can burn out.
I did this conversion on my XP Deluxe I had 20yrs ago using a copper head gasket along with a mild cam i also swap the dizzy over to a 250 one 12v compared to 7.8v. You will also have to play around with the radiator hoses.
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Posted: Tue Feb 20, 2007 1:39 am 
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Yeah i remember that rad hose prob, i threw a 221 in my XB years ago after the 250 blew up, from memory the thermostat housing had a diff hose diam the the 250.... Can't remember exactly what i did to fix it though.
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Posted: Tue Feb 20, 2007 10:27 am 
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by memery i think the old 170 is shorter them the 200/250 block
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