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modifying a mfi inlet manifold

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Old May 15, 2011 | 12:42 PM
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From: milton keynes
Default modifying a mfi inlet manifold

i have a spare mfi inlet manifold and spacer/injector rail.
its off the car and im gonna paint it.
whilst its off im gonna port match it and smooth the ports with a dremmel.
is there anything else i can do it improve its performance ???
thanks guys


ps,would it be any improvement if i welded a bigger chamber on to it ??anyone tried and tested ????
cheers
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Old May 15, 2011 | 04:07 PM
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Leave it to a professional.
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Old May 15, 2011 | 05:46 PM
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thanks for the advice,but thats not the answer im looking for
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Old May 16, 2011 | 05:51 AM
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anyone????
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Old May 16, 2011 | 10:12 AM
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I think at the moment you are best port matching it to the head, use your gasket as a template, remember the head port should always be the same size or bigger than the inlets runner not the other way round.

Rob,

Ps its easy on an mfi with the head off.


Just put the injector plate on the head and match the ports, then put the injector plate on the manifold and match etcetc.

Its not so easy on an efi inlet because you don't have a sandwich plate.

Last edited by Rob_DOHC; May 16, 2011 at 10:13 AM.
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Old May 16, 2011 | 09:36 PM
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Would'nt even bother.i was going to do this but decided to get it done by a company,so dont get different flow readings.
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Old May 17, 2011 | 11:40 AM
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Port matching won't give you unequal flow, if anything it may well equalise flow (so long as you don't go mad). The cvh inlet is VERY mismatched sometimes.

Rob,
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Old May 17, 2011 | 10:58 PM
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I didnt mean that.id prefere the company who did my head to match it up for me.at least then i know its been done to a high standard.THats just me.
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Old May 18, 2011 | 09:06 AM
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Thats fair enough, its not something you can really get wrong tbh, and theres no reason why you wouldn't be able to work to the same standards as a company.

Different folks different strokes or what ever they say,
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