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Micra Inlet Manifold


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#1 redhot-mini

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Posted 22 October 2018 - 05:40 PM

So only just found out that you cant run a standard micra inlet manifold, there is no room is it's true? Has anyone got a easy guide to make a Inlet. iv seen a stainless flange on eBay. But how do you go about fitting the fuel rail

#2 Bat

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Posted 22 October 2018 - 05:41 PM

Hi,

I would think the stainless flange is for the exhaust?

Cheers  :proud:



#3 redhot-mini

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Posted 22 October 2018 - 05:51 PM

Hi,
I would think the stainless flange is for the exhaust?
Cheers  :proud:


Second one down definitely inlet.

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#4 Bat

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Posted 22 October 2018 - 05:59 PM

Hi,

Well in that case you'll have to buy injector bosses, pipework and a throttle body flange and get it all tigged together.

Do fusion fabs make one or can the original be cut down and welded back together?

Another alternative would be some motorbike throttle bodies and use those with some stubs and silicon hoses on to that stainless flange.

Cheers  :proud:  



#5 mini_man96

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Posted 22 October 2018 - 07:07 PM

Take the original micra inlet, cut off the runners, take some aluminium 90° bends and get those welded to what's left of the manifold. Once you've got the 4 new runners you need to make a plenum, this can be made from another piece of aluminium tubing with the throttle body on one end and the other end blanked off. It may be a good idea to fit small velocity stacks to the ends of the runners on the inside of the plenum to aid flow.

#6 mini_man96

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Posted 22 October 2018 - 07:14 PM

Something like this:

 

https://imgur.com/a/cBOQOcY



#7 McMini 22

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Posted 23 October 2018 - 06:58 PM

Assuming you can TIG weld you can make one up. I used a 4 inch 180 degree bent pipe that I got from eBay. I'll try to get a photo up.
I've got a Jenvy throttle body sitting for a later mod and was planning on making a carbon fibre plenum and runners bonded to the original flange and injectors. Should be easy enough!

#8 redhot-mini

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Posted 23 October 2018 - 09:11 PM

Assuming you can TIG weld you can make one up. I used a 4 inch 180 degree bent pipe that I got from eBay. I'll try to get a photo up.
I've got a Jenvy throttle body sitting for a later mod and was planning on making a carbon fibre plenum and runners bonded to the original flange and injectors. Should be easy enough!


I have a mate down the road who can fit I just have to make it and he will weld it up what size 90 bends did you use

#9 McMini 22

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Posted 26 October 2018 - 11:51 AM

Here is what I did.  Can't take the credit for the idea as I found it on another forum.

 

20160322_181522.jpg

 

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20160319_002556.jpg

 

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20161202_235945.jpg

 

 



#10 matty...

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Posted 26 October 2018 - 01:41 PM

We make them up. We have a new version out now.

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#11 matty...

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Posted 26 October 2018 - 01:42 PM

Exhaust manifolds too.

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#12 thelegg

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Posted 10 November 2018 - 09:44 AM

I've got one of the fusion fabrication inletmanifold and it really did make my coversion a lot easier :)

#13 smudger068

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Posted 10 November 2018 - 10:04 AM

Get a Fusion Fabs one!

Blimey looking at that new one mine might be due for a part ex haha




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