Click here to return to the home page.
Image of a road.
Who's Online
6 registered (Hamwich, JohnS, Lord Sward, Craig Jezz, Crunchie Gears, HKNYMOG), 67 Guests and 27 Spiders online.
Key: Admin, Global Mod, Mod
Latest Photos
SwanMog Christmas party
Finished Plus 4 Side View
Mkiss Mog +4 fourseater
Management of cooling air flow
Morgan Rutherford Modsports +8
Newest Topics
12 volt wiring help please!
by Fat Wolfie
15/01/19 07:09 PM
Ford VW Alliance confirmed
by +8Rich
15/01/19 06:56 PM
Spotted this web site
by Jack The Lad
15/01/19 02:43 PM
Jubilee Sailing Trust
by Gambalunga
15/01/19 02:13 PM
Just in case....
by Gambalunga
15/01/19 02:07 PM
nc 500 advice
by B3MOG
14/01/19 08:25 PM
Towing a trailer in France
by Island Mog
14/01/19 08:18 PM
Newest Members
PJS, 250swb, Mkiss, jacquesj, Dodger
6332 Registered Users
Shout Box

Forum Stats
6,332 Registered Members
33 Forums
33,973 Topics
543,315 Posts

Most users ever online: 341 @ 11/02/18 10:30 PM
Today's Birthdays
olleyjp, tarutino
Page 1 of 9 1 2 3 4 5 6 7 8 9 >
Topic Options
#546818 - 07/12/18 09:03 AM Air Intake improvements
CooperMan Offline

Talk Morgan Regular

Registered: 19/11/15
Posts: 546
Loc: Yorkshire
On the 3.7 Roadsters the only intake for air is via a hole cut onto the base of the Mustang airbox / filter housing here..



It's not very large in area and draws intake air from close to the back of the engine and the footwell bulkhead, and is only about 6 inches from the hot exhaust manifold

The filter sits flat in the top of the airbox & there's plenty of space below...





So I've cut some additional intake holes below the filter line to allow more air routes in, and hopefully some will be cooler air pushed in by the forward facing bonnet louvres, and I'm lining the 'box' with reflective foil tape





Next task is an air scoop to the back of the bonnet side louvres or a Naca duct
_________________________
Jon M

Top
#546821 - 07/12/18 09:50 AM Re: Air Intake improvements [Re: CooperMan]
Richard Wood Offline
Has a lot to Say!

Registered: 03/02/16
Posts: 1385
Loc: East Harling, Norfolk UK
Great stuff Jon. You can certainly hear the air being sucked through that single inlet hole when blipping the engine at idle.

I think it will be difficult to make any subjective assessment of improvement due to the great variations in air temp at the moment and driving conditions. Nevertheless would be very interested to hear your driving observations following the mod.

I assume the airbox is standard Ford although not Mustang as this picture, albeit of a V8 Mustang belonging to a relative, looks of similar design but better location.



The V6 version has similar intake plumbing placing air box on the same front nearside, in cool air stream away from exhaust. Indeed press hype mentions cold air induction system to enhance power and torque.


Edited by Richard Wood (07/12/18 10:14 AM)
_________________________
Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom

Top
#546823 - 07/12/18 10:22 AM Re: Air Intake improvements [Re: CooperMan]
Hamwich Online   content

Talk Morgan Sage

Registered: 28/04/08
Posts: 6960
Loc: Gloucestershire, UK
Going for more power from a Roadster 3.7? Respect!

_________________________
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 1957 R4 CV, 2005 Ferrari Vipar

Top
#546830 - 07/12/18 11:00 AM Re: Air Intake improvements [Re: CooperMan]
Heinz Offline

Talk Morgan Addict

Registered: 07/09/09
Posts: 3350
Loc: Cologne, Germany
I am wondering how big is the opening in diameter regarding the original V6 Mustang airbox, that could be a benchmark for your experiments.
And also, if it is the same or a similar box in the Morgan, how is the stream of fresh air directed in the Mustang. The shape of and the flow in the airbox is an important factor to insure a good intake.
I would also experiment how it works when you close the original opening because - it must not but it could - happen that the air gets unwanted turbulences when the different channels meet coming from different directions and from the side vs. the bottom.


Edited by Heinz (07/12/18 11:01 AM)

Top
#546846 - 07/12/18 12:28 PM Re: Air Intake improvements [Re: CooperMan]
Richard Wood Offline
Has a lot to Say!

Registered: 03/02/16
Posts: 1385
Loc: East Harling, Norfolk UK
This is best image of V6 Mustang airbox I could find.



You can just see the dirty air inlet is moulded to a roughly rectangular shape taking air from forward and away from radiator.

There seem to be several airbox conversions available in the US involving K & N style air filters within custom casings and claiming various improvements to power and torque. The gains seem to involve cleaner route for air inlet by replacement or removal of silencer compartments as seen above in clean air inlet.

Doesn't seem the Roadster variant has this silencing though.


Edited by Richard Wood (07/12/18 12:42 PM)
_________________________
Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom

Top
#546847 - 07/12/18 12:34 PM Re: Air Intake improvements [Re: Hamwich]
CooperMan Offline

Talk Morgan Regular

Registered: 19/11/15
Posts: 546
Loc: Yorkshire
Originally Posted By Hamwich
Going for more power from a Roadster 3.7? Respect!



Tim, where on earth did you find that photo of me? pantsdown
_________________________
Jon M

Top
#546914 - 07/12/18 05:27 PM Re: Air Intake improvements [Re: CooperMan]
Deejay Offline
L - Learner Plates On

Registered: 20/06/15
Posts: 156
Loc: North Somerset, UK
Colder the air, the denser it is and hence greater oxygen content. So that’s all to the good.
BUT, air box design is a bit more of a science than merely having as big a hole as possible. Boxes are designed by a combination of shape, volume and intake hole to achieve an optimum air flow at a resonant frequency designed to be at a point where torque might otherwise drop off due to engine characteristics. (Helmholtz Resonance principle)
So, don’t throw away the bits you’ve drilled out, you may wish to stick them back on!

Top
#546935 - 07/12/18 06:38 PM Re: Air Intake improvements [Re: CooperMan]
Craig Jezz Online   content

Talk Morgan Regular

Registered: 27/03/17
Posts: 716
Loc: Oxon
Here’s mine, 1.6 Sigma engine though

_________________________
Craig Jezz

Morgan 4/4 Sports Sand (Williams & Wolf Tuned)
BWM 320d M Sport Xdrive

Top
#546939 - 07/12/18 07:00 PM Re: Air Intake improvements [Re: Deejay]
Heinz Offline

Talk Morgan Addict

Registered: 07/09/09
Posts: 3350
Loc: Cologne, Germany
Originally Posted By Deejay
Colder the air, the denser it is and hence greater oxygen content. So that’s all to the good.
BUT, air box design is a bit more of a science than merely having as big a hole as possible. Boxes are designed by a combination of shape, volume and intake hole to achieve an optimum air flow at a resonant frequency designed to be at a point where torque might otherwise drop off due to engine characteristics. (Helmholtz Resonance principle)
So, don’t throw away the bits you’ve drilled out, you may wish to stick them back on!


I fully agree to your point! But in case of the pics of the original airbox of the 3.7 Roadster shown above the input opening doesn't look really professional and calculated, but rather like someone sawed out a piece where there happened to be some space left.
Of course I could be wrong about that, I also believe that the disappointment is great when the resonance of the airbox is no longer right. You'll notice that e.g. when at low revs this acute impact is missing and the acceleration feels weak and without initial torque but also at higher revs something could just feel wrong.

Because of that I have kept the airbox of my 4/4, a first trial without it gave worse results even if the way to the TB was shorter.

I have just as much respect for the engineers' airbox calculations as I have for a well tuned bass reflex speaker. (even if the air is flowing in the airbox and only vibrates in the bass reflex box).


Edited by Heinz (07/12/18 07:06 PM)

Top
#546954 - 07/12/18 08:12 PM Re: Air Intake improvements [Re: CooperMan]
CooperMan Offline

Talk Morgan Regular

Registered: 19/11/15
Posts: 546
Loc: Yorkshire
Thanks for the comments Heinz & Deejay, but if you look at photo 1, the factory solution is just to saw off part of the bottom to create a hole, certainly doesn't look scientifically calculated to me

On the 3 ltr engines all the proper science took place after the throttle body in the intake tracts
_________________________
Jon M

Top
Page 1 of 9 1 2 3 4 5 6 7 8 9 >

Moderator:  Aeroman, Boshly, Simon