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intake and exhaust


 
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mj77724
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Joined: 18 Feb 2007

PostPosted: Wed Feb 28, 2007 9:26 pm    Post subject: intake and exhaust Reply with quote

i have an 87 xj with a 4.0
i want to know if an intake and exhaust off a 95 4.0 will work
i know that some of the plugs may need to be swaped
i just want to know if its been done as there are spacer for 95 an bored out
tb

thanks marlen
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Brad The Best
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Joined: 14 Jan 2007
Location: Kamloops B.C Canada

PostPosted: Thu Mar 01, 2007 7:27 pm    Post subject: Reply with quote

87 - 95 has a different bolt pattern on the throttle body 3 bolt(87) 4 bolt(95)

i don't believe the exhaust manifold will fit but could be wrong ( i probably am) the head was changed slightly when the HO model came out ( i think 91 ) the exhaust ports were raised or lowered 1/8th of an inch .

the two engines definitely have different exhaust manifolds , however there is a chance it will bolt up . and a chance it wont
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Tardis
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Joined: 07 Aug 2004
Location: Ohio

PostPosted: Fri Mar 02, 2007 3:56 am    Post subject: Reply with quote

Correct, the interchange on the intake/exhaust manifolds is 87-90. 4.0L's made from 1987-1990 are low output motors. The 91-up motors are high output with a revised cylinder head/engine block design. The new parts won't fit the old engines and visa versa.
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