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Home > Help Needed / General Tech Chat > help needed Building a HIFF44 plenum

Paul R

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Swindon

2nd Feb, 2013 at 04:45:30pm

Right i have been thinking about building a plenum for the hiff 44, i was wondering what bits are needed i know you need the small hole on the right hand side of the carb.

From what i have found searching is that you need a special sized tube for the float chamber to run at the correct pressure or have i got this mistaken? I dont have a standard plenum to hand to look at atm so if anyone has detailed pics of the inside and outside that would be brill.

The plenum i want to create (out of cardboard for now) would be a two peice item, a removable rear section with a plate bolted to the carb (abit like the itg filter setup and how that works).

All information and any sites and design softwear names that i could build a model on would be much aprecheated *smiley*

Paul

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Brett

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Doncaster, South Yorkshire

2nd Feb, 2013 at 07:00:29pm

i should have a plenum to had somewhere what do you need pics of the internal restrictor?

Yes i moved to the darkside *happy*

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Yo-Han

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North of the Netherlands

2nd Feb, 2013 at 07:02:19pm




On 2nd Feb, 2013 Paul R said:
From what i have found searching is that you need a special sized tube for the float chamber to run at the correct pressure or have i got this mistaken? I dont have a standard plenum to hand to look at atm so if anyone has detailed pics of the inside and outside that would be brill.

Paul


Do you mean a pitot tube?
You don't actually need this if you make the opening to the carb the correct size.
Someone on here has been experimenting with pitot tubes, have a search.

Dazed and Confused....

wil_h

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Betwix Harrogate and York

2nd Feb, 2013 at 09:38:16pm

Easiest thing is to buy a plenum, then sell it when you're done.

The restrictor is a 2" tube with cutouts. I made one for a plenum that had had it removed. I used a bit of 2" exhaust pipe.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph



On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


wolfie

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Somewhere around Swindon

3rd Feb, 2013 at 01:27:33pm

Why?
Two peice is complicated to seal and both nics and the original work perfect and would be cheaper

Crystal Sound Audio said:
Why wolfie...you should have your name as Fuckfaceshithead !


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Paul R

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Member #: 1757
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Swindon

3rd Feb, 2013 at 03:22:04pm

Why not? Can make one with a rampipe inside as well. As i said its a thought not saying it will happen i just wanted to test my building skills with cadboard lol

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-Rover 100 VVC #2 - track project

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