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Advice please on reversing the inlet manifold.

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Old 04 July 2008, 09:00 PM
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H4RDY-P1
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Default Advice please on reversing the inlet manifold.

The car is a 2000 P1 running a front mount and well i just fancu a challenge and im gonna have a go at reversing the inlet manifold,so is it just a case of removing the aircon,re-postioning the alternator + new belt, and choping off the throttle body flange and welding it on the other side ,basically any advice or tips from people that have actually done this are more than welcome,
thanks in advance pete.
Old 04 July 2008, 11:34 PM
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SSCJAY
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IMHO, it's not worth the effort unless your going to be running in excess of 500 bhp.

I'm still running my inlet in standard position and once i'm in the boost threshold lag is not an issue.
Old 05 July 2008, 09:20 AM
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H4RDY-P1
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Anyone ?
Old 05 July 2008, 10:31 AM
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AlanG
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Originally Posted by H4RDY-P1
The car is a 2000 P1 running a front mount and well i just fancu a challenge and im gonna have a go at reversing the inlet manifold,so is it just a case of removing the aircon,re-postioning the alternator + new belt, and choping off the throttle body flange and welding it on the other side ,basically any advice or tips from people that have actually done this are more than welcome,
thanks in advance pete.
Remove air con, flip alternator over, make bracket to support alternator, make custom pipework for reversed installation, make brackets for water header tank, source new water hoses, weld flange on to inlet manifold to bring angle of throttle body back down to reasonable angle, extend wiring for throttle position switch, obtain hose for new fitting on inlet manifold for brake servo, etcetera etcetera etcetera....

Have a look at the pics on my scooby profile thingy and it'll give you ideas, but as said i'd do it for a reason, than the fun of it. The car can be off the road for some time just to do this if you haven't done it before.
Old 05 July 2008, 10:46 AM
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Slowboy Racing
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You dont need to cut and switch the TB flange on the latter manifold just modify so its sits lower and rotate the manifold. Switching the TB would require enlarging the plenium.

Remove manifold strip and modify
Remove lower dowels on manifold.
Remove existing hard line fuel rails and replace with parallel feed to obtain clearance.
Remove air con if you have.
Relocate alternator.
Modify alternator bracket.
Modify ICV
Modify Power steering tank
Re route water pipe under manifold.
Relocate header tank.
Block of or re route Breathers.
Modify power steering pulley tensioner.
Modify Throttle linkage.
Make intercooler pipes for front entry.
Finish of by routing all existing vacuum pipes etc to make neat.

A fare amount of work for a small gain when comparing the amount you have reduced pipe work.
Old 05 July 2008, 06:30 PM
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the_msp
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By latter, you mean phase 1.5 Un-Ink?

P.s sent you an email to your slow-boy racing emaill account...
Old 05 July 2008, 06:52 PM
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Slowboy Racing
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Originally Posted by the_msp
By latter, you mean phase 1.5 Un-Ink?

P.s sent you an email to your slow-boy racing emaill account...

The latter referred to is Phase 2.

Phase 1.5 can be rotated, with minor mods to the manifold it's self.

Phase 1 needs to stay in the original position in order for the ICV to clear the bonnet although the TB needs to be modified to the front side.
Old 05 July 2008, 07:31 PM
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H4RDY-P1
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Cheers for that matey,ill be giving this a go very sooncan manifold spacers still be used when doing this?
Old 06 July 2008, 12:40 AM
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R4LLY
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Here's a quick breakdown and guide for what is needed for the different phase manifolds:

www.slowboy-racing.co.uk - Inlet manifold reversal -
Old 06 July 2008, 08:02 AM
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M535I
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could save your self some time and effort (not cash )!! lol , i have seen some on ebay for aou £350.00 that are modified for front mount's.
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