What carb?

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Autobahn
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What carb?

Post by Autobahn »

My split screen moggy is undergoing major surgery at the moment, bare metal restoration etc.

It came with a carb fitted to the 803cc engine that used a pancake filter, I want to fit a carb that uses the original canister type filter.

1st photo is of carb fitted, 2nd photo of the filter I want to fit.

Can someone confirm exactly what SU carb it should have for the canister filter please.... thanks.

PS.. I will be posting some photos of the restoration process soon.[frame]Image[/frame][frame]Image[/frame]

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jagnut66
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Re: What carb?

Post by jagnut66 »

Hi,
I believe you can simply unbolt the mounting plate from the carb you have and then bolt your period correct filter body in place.
Can I not see mounting holes at the bottom of stem leading up to the filter housing, with a hole between them that the carb would 'breath' through?
As to the carb itself, I believe it would have been of the same type that you have fitted, which had the newer type filter and mounting plate attached to it.
At a guess, I believe the other part of the support for your original filter mounts onto the exhaust manifold studs, with their washers and brass nuts holding it in place.
I'm sure an expert will be along soon to confirm whether I'm right or not but I wouldn't discard anything just yet.........
Best wishes,
Mike.
Last edited by jagnut66 on Tue Feb 17, 2015 11:00 pm, edited 1 time in total.
1954 Series 2: 4 door: "Sally" -- Back on the ground with (slave) wheels, now being sprayed by me, slowly......
1970 Triumph Herald 1200: "Hetty" -- Driven back from Llangollen in Wales (twice.....)
1952 Morris Minor MM highlight with sidevalve engine still fitted, wants work, so joins the queue for now......
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bmcecosse
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Re: What carb?

Post by bmcecosse »

It's been fitted with a much later HS2 1.25" carb and manifold..... You sure it's an 803 engine? Let's see some pictures.... Originally it would have an H1 1.125" carb.
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jagnut66
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Re: What carb?

Post by jagnut66 »

Hi BMC,
Was their much physical difference between the HS2 and H1? Which would be better for the engine?
Best wishes,
Mike.
1954 Series 2: 4 door: "Sally" -- Back on the ground with (slave) wheels, now being sprayed by me, slowly......
1970 Triumph Herald 1200: "Hetty" -- Driven back from Llangollen in Wales (twice.....)
1952 Morris Minor MM highlight with sidevalve engine still fitted, wants work, so joins the queue for now......
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bmcecosse
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Re: What carb?

Post by bmcecosse »

Well - it's bigger, so more airflow.... The mounting flange is different - hence the later 1098 type manifold has been used with the larger carb. Is this wise with a feeble 803 engine........ ??? Hence I query the engine size...... !
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jagnut66
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Re: What carb?

Post by jagnut66 »

Aahhh, I see..........
Could the original type filter not be made to fit it then?? (Thus restoring the original look Autobahn wants.)
Mind you, if your saying that the 803 wouldn't be improved any by fitting / retaining a HS2, then there wouldn't be any point.......
Last edited by jagnut66 on Tue Feb 17, 2015 11:22 pm, edited 1 time in total.
1954 Series 2: 4 door: "Sally" -- Back on the ground with (slave) wheels, now being sprayed by me, slowly......
1970 Triumph Herald 1200: "Hetty" -- Driven back from Llangollen in Wales (twice.....)
1952 Morris Minor MM highlight with sidevalve engine still fitted, wants work, so joins the queue for now......
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bmcecosse
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Re: What carb?

Post by bmcecosse »

Probably...but it may restrict the airflow. And it hardly looks 'original' with the later carb and manifold anyway !
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jagnut66
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Re: What carb?

Post by jagnut66 »

Had a quick trawl but I can't see any SU H1 carbs for sale on eBay or elsewhere, hopefully someone else on here might have one...........
Meantime the quickest way to confirm the engine size is its number, you'll find it located above the front (no 1) spark plug, if it's still there.............
803 engines are prefixed with AHPM or 8M, 948's with 9M and 1098's with 10M.
Best wishes,
Mike.
1954 Series 2: 4 door: "Sally" -- Back on the ground with (slave) wheels, now being sprayed by me, slowly......
1970 Triumph Herald 1200: "Hetty" -- Driven back from Llangollen in Wales (twice.....)
1952 Morris Minor MM highlight with sidevalve engine still fitted, wants work, so joins the queue for now......
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Autobahn
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Re: What carb?

Post by Autobahn »

I recall doing all the research when I first got car about 18 months ago and it is a 803 engine.

There is no way to fit the earlier canister filter to the carb fitted.

Ref performance this is not an issue, I just want it to be as original as possible.

My other run about is a bit different to this moggy, a 600bhp Nissan GT-R so I drive that if I need to go a bit faster :D

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123
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Re: What carb?

Post by 123 »

jagnut66 wrote:
Meantime the quickest way to confirm the engine size is its number, you'll find it located above the front (no 1) spark plug, if it's still there.............
Best wishes,
Mike.
Does the filter type distinguish between 803cc and the others please?
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katy
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Re: What carb?

Post by katy »

Perhaps a small adapter plate between the HS2 and the canister filter?
Talk slow, think fast!
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philthehill
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Re: What carb?

Post by philthehill »

Here is a manifold to suit

http://www.ebay.co.uk/itm/Morris-minor- ... 41908255f2

http://www.ebay.co.uk/itm/MORRIS-MINOR- ... 5b0c73727f

And part of the air cleaner

And I am sure that I have a Minor H1 or H2 carb, I will look in the morning.
Last edited by philthehill on Wed Feb 18, 2015 6:23 pm, edited 1 time in total.

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bmcecosse
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Re: What carb?

Post by bmcecosse »

Can we see some pictures of the engine please - to verify the capacity?
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123
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Re: What carb?

Post by 123 »

.
Does the oil filter type distinguish between 803cc and the others please?
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chesney
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Re: What carb?

Post by chesney »

Well, yes. The 803 uses a spin-on filter down near the distributor. The 948/1098/MG1275 (of course) has a 'remote' filter housing and a canister paper element type filter down by the sump. The Marina 1300 has the oil filter fitted on the block by the heater valve.
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123
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Re: What carb?

Post by 123 »

chesney wrote:Well, yes. The 803 uses a spin-on filter down near the distributor. The 948/1098/MG1275 (of course) has a 'remote' filter housing and a canister paper element type filter down by the sump. The Marina 1300 has the oil filter fitted on the block by the heater valve.
Thanks :-)

So is it correct to say if Autobahn has a spin on filter he definitely has an 803 engine please?
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chesney
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Re: What carb?

Post by chesney »

Not exactly, as per my post, the Marina also had a spin-on filter on the block. Not to mention the 'Mini' spin-on conversion to the 'remote' system, so simply asking if the engine has a screw-on filter may not be accurate. Hence the request for a photo, which would be indisputable.
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123
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Re: What carb?

Post by 123 »

chesney wrote:Not exactly, as per my post, the Marina also had a spin-on filter on the block. Not to mention the 'Mini' spin-on conversion to the 'remote' system, so simply asking if the engine has a screw-on filter may not be accurate. Hence the request for a photo, which would be indisputable.
Oh dear things can be made so complicated can't they :-)

Chesney defined two types of filter.
Spin on and canister.

Within that context the Marina has a canister filter.
Should Chesney have said "The 803 has this type of filter http://www.ebay.co.uk/itm/Austin-A30-Mo ... 2eddb595e9 and the others don't to help Autobahn decide if he has an 803 or not?
Or is that gobbledegookable too please?
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chesney
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Re: What carb?

Post by chesney »

Within the context, the Marina 1300 still has a spin-on filter attached to the block, like an 803.
A photo is much more useful, if we can see the filter by the dizzy, it's an 803 block.
Simply supplying a link is not specific enough, theoretically all engines can have spin-on filters with little modification (though not all in the same location on the engine). It is the location of the filter that is important in differentiating between them.
Hence a photo is indesputable...
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123
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Re: What carb?

Post by 123 »

chesney wrote:Within the context, the Marina 1300 still has a spin-on filter attached to the block, like an 803.
A photo is much more useful, if we can see the filter by the dizzy, it's an 803 block.
Simply supplying a link is not specific enough, theoretically all engines can have spin-on filters with little modification (though not all in the same location on the engine). It is the location of the filter that is important in differentiating between them.
Hence a photo is indesputable...
Harumph!
Within the context of Chesney's post
Chesney's post being the sole text connected with my question.
within that sole context
Chesney defined 2 types of filter.
The "Spin on" fitted to the 803
The "Canister" fitted to the others, including the Marina 1300.

Photos take time, energy, skills, patience and equipment.
The answer to the simple question have you got this type of filter http://www.ebay.co.uk/itm/Austin-A30-Mo ... 2eddb595e9 is definitive and indisputable.
A simple yes or no.

Lets KISS.
As in Keep it Sweet and Simple :=)
Rather than find unnecessary work for Autobahn's not so idle hands.
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