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| Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's. |
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#1
December 5th, 2003, 16:43
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Headers Question
Got a pacesetter header that was supposed to go on a pre 91 258 engine with a 4.0 head. Will it fit on my 98 4.0 head or are they completely different head measurements?
Thanks 
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#2
December 6th, 2003, 05:40
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Re: Headers Question
All the 4.0 heads use the same intake/exhaust bolt pattern and the exhaust ports (tho different sixe) all seem to fit in the ex gasket so the short answer is the header will bolt up - but newer XJ's use 2 O2 sensors so you might need to add a bung?
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