Air Filter

Standard & electronic conversions
Post Reply
User avatar
midlandsmog
.
Posts: 8
Joined: 5 years ago

Air Filter

Post by midlandsmog »

Hi Everyone,

I'm wondering if anyone can help me regarding the most suitable air filter to fit to my Morris Minor. This is the final piece in the jigsaw before I hopefully get it on the road following a five year restoration project.

The car has 1275 (+60), 266 cam, hif 44, mini sport intake, 5 speed box and LCB exhaust. One of my objectives is to keep the car as quiet as possible. I understand the K&N filters cause significant induction noise; is this true? The decision therefore is what air filter assembly do I fit without a reduction in efficiency?

Thank you for any advice that can be offered.



User avatar
MM
.
United Kingdom
Posts: 3775
Joined: 9 years ago

Re: Air Filter

Post by MM »

I currently use a Maestro 1.3 airbox, on a HIF44 SU, which works nicely - low induction noise, yet plenty of airflow:

viewtopic.php?p=56006" onclick="window.open(this.href);return false;


Maurice, Kent.
1970 Trafalgar Blue Traveller

http://retrorides.proboards.com/index.c ... read=37056" onclick="window.open(this.href);return false;

User avatar
Plin
.
United Kingdom
Posts: 3258
Joined: 10 years ago
Location: North Hertfordshire

Contribution Stars

MMO Annual Award

Misc

Re: Air Filter

Post by Plin »

Welcome to the forum midlandsmog. Hope MM's answer helps as I don't have any answers to your query but it's great to hear your 5 year restoration is nearly finished :D .



User avatar
midlandsmog
.
Posts: 8
Joined: 5 years ago

Re: Air Filter

Post by midlandsmog »

Thank you for the warm welcome Plin.

Also thank you MM for your response and link to other post. I should have mentioned previously that I am hoping to find an air box with a similar appearance to the original air box fitted to the 1098 engine. It seems a shame to cover a nicely polished carb in plastic. I'm sure the 1098 air box will strangle the 1275 / HIF 44, does anybody have any tested ideas?

Also how noisy is the K&N setup? Is it considered unacceptable for long distance cruising?



User avatar
MM
.
United Kingdom
Posts: 3775
Joined: 9 years ago

Re: Air Filter

Post by MM »

Yes, pancake or K&N filters tend to drone on the motorway, which gets very wearying after a few miles!

You could fit one such as that fitted to Marinas:

Image


Maurice, Kent.
1970 Trafalgar Blue Traveller

http://retrorides.proboards.com/index.c ... read=37056" onclick="window.open(this.href);return false;

User avatar
bmcecosse
Deceased Member
Deceased Member
Posts: 4397
Joined: 12 years ago
Location: ML9

Contribution Stars

MMO Annual Award

Re: Air Filter

Post by bmcecosse »

The standard air cleaner box is hopeless for air flow - even with no filter inside! You will need to go with something larger. The MArina one above looks fine - I think some have also found Princess air cleaners work well. The K& N is very noisy. You could fabricate a trunking and fit a remote K & N on the LH side of the engine bay - but it's not going to be pretty. If you have the big valve head on your engine -it should go very well!


 









Image

User avatar
MM
.
United Kingdom
Posts: 3775
Joined: 9 years ago

Re: Air Filter

Post by MM »

Indeed, the Austin Princess with the O-series engine had a HIF fitted, with a suitable airbox:

Image


Maurice, Kent.
1970 Trafalgar Blue Traveller

http://retrorides.proboards.com/index.c ... read=37056" onclick="window.open(this.href);return false;

User avatar
midlandsmog
.
Posts: 8
Joined: 5 years ago

Re: Air Filter

Post by midlandsmog »

Just to say thank you very much for all your help.

I found a Morris 1800 air filter housing on eBay, it looks like this should fit following some minor modification.

Sorry it took so long to reply.



User avatar
Mainlander
.
Posts: 114
Joined: 9 years ago
Location: Ashburton, NZ

Re: Air Filter

Post by Mainlander »

It does fit, I have one on mine. There is even a K+N filter element that will fit inside.



User avatar
midlandsmog
.
Posts: 8
Joined: 5 years ago

Re: Air Filter

Post by midlandsmog »

Hi Mainlander,

Thanks for your response. My restoration is finally at the stage I can look at getting the Airfilter installed. Would it be possible you could send a picture of how you got your Morris 1800 air box to fit? Also if you have the part number of the K&N filter element that be very helpful.

Thanks again.



User avatar
midlandsmog
.
Posts: 8
Joined: 5 years ago

Re: Air Filter

Post by midlandsmog »

I was just looking at air filters housings on eBay. It would be good if I could find one that needs no modification. Has anybody fitted an MG Midget 1275 housing? From the pictures it possibly looks small and may restrict when used singularly?

Thank you as always for any advice.



User avatar
bmcecosse
Deceased Member
Deceased Member
Posts: 4397
Joined: 12 years ago
Location: ML9

Contribution Stars

MMO Annual Award

Re: Air Filter

Post by bmcecosse »

Far too small...... go with the earlier suggestions.


 









Image

User avatar
Mainlander
.
Posts: 114
Joined: 9 years ago
Location: Ashburton, NZ

Re: Air Filter

Post by Mainlander »

Most of the modification to fit the filter box was done to the alloy plate that mounts to the carb. Mine is on a HIF 38 and the plate used is from a std 1098 air filter housing. The 1800 mounting plate has an angle that didn't help. The plate needed to be opened out to suit the carb openings and mountings. The threaded shaft needed the thread cut further down and the shaft shortened.
The element number E-3260. ( http://www.knfilters.com/search/product ... rod=E-3260" onclick="window.open(this.href);return false; ) I found it doing a dimension search on the K+N website. 162mm OD, 127mm ID, 64mm H. The height would be better at 68mm but there was nothing available. Two rubber gaskets either side of the element fixed that and made for a firm fit.
01.jpg
01.jpg (116.52 KiB) Viewed 2807 times
01.jpg
EXIF-Data show/hide
Original image recording time:
2015:01:20 10:00:02
Image taken on:
Tue Jan 20, 2015 10:00 am
Focus length:
4.7 mm
Shutter speed:
1/60 Sec
F-number:
f/5.6
ISO speed rating:
64
Whitebalance:
Auto
Flash:
Flash fired, auto mode
Camera-manufacturer:
NIKON
Camera-model:
COOLPIX P50
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern
02.jpg
02.jpg (106.37 KiB) Viewed 2807 times
02.jpg
EXIF-Data show/hide
Original image recording time:
2015:01:20 09:58:34
Image taken on:
Tue Jan 20, 2015 9:58 am
Focus length:
4.7 mm
Shutter speed:
1/31.1 Sec
F-number:
f/2.8
ISO speed rating:
400
Whitebalance:
Auto
Flash:
Flash did not fire, auto mode
Camera-manufacturer:
NIKON
Camera-model:
COOLPIX P50
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern
03.jpg
03.jpg (103.77 KiB) Viewed 2807 times
03.jpg
EXIF-Data show/hide
Original image recording time:
2015:01:20 09:58:20
Image taken on:
Tue Jan 20, 2015 9:58 am
Focus length:
4.7 mm
Shutter speed:
1/60 Sec
F-number:
f/2.8
ISO speed rating:
64
Whitebalance:
Auto
Flash:
Flash fired, auto mode
Camera-manufacturer:
NIKON
Camera-model:
COOLPIX P50
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern
It is close to the shock nut, 10mm. It has never touched.



User avatar
midlandsmog
.
Posts: 8
Joined: 5 years ago

Re: Air Filter

Post by midlandsmog »

Thank you very much for the information and photos, really very useful indeed.

I will investigate further at the weekend.

Thanks again



Post Reply