The exhaust manifold appears to go along with the intake manifold and carbs. Most likely from an MG, Austin or Morris 1100.

Kelley

 OP said in the first post the engine number is missing.
You completely missed it, Lord Oblivious.
What is your problem with me?

Block shows its and 850, stroke measurement shows its an 850....Its an 850.

Well spotted Captain Obvious.

Blocks have casting numbers on them though, just like heads and gearbox casings.

What exhaust manifold does this appear to be?

AUC 976

Seems like one of the the floats bowls is from a different carb...


I am curious if this HIF38 could be jetted for a stock 850 (pretty sure its stock)
https://www.minimania.com/part/MMKT0401/Classic-Austin-Mini-15-Su-Hif38-hif4-Rebuilt-Carb-With-Manifold-And-Filter

minitrax, what is stamped on the tag on the screw on the right-hand-side of the picture?

Kelley

yep, comes off the cam lifter cover and just open, no hose.  I think Ill run that higher up to a crankcase breather filter as I dont have the stock air filter anymore.

Re the vent on the back of the engine: Does it come out of one of the cam lifter covers? I think it would have been connected to the air cleaner housing as an early form of crankcase ventilation. The red hose coming off the top of the rocker cover would have been connected to the air cleaner housing.

Much appreciate the additional info.  When I search on MG1100 Carburator I did find some HS2 images that appear to be indentical, so I think your spot on mascherk.

While running it was a bit rough and not much power and the carbs were totally out of sync so I pulled them to do a basic refresh.

Carb body on the right (standing in font of grille) shows AUC 1341, left body AUC 1342

Totally different float setup on the left. I'm guessing a PO had a float issue and and just did the one side.  

Another question would be there is a vent hose connect(nothing on it currently) off the side of block (firewall side), should that be routed anywhere specific?

Update: Based on stroke I have an 850, I measured 7cm / 2.75in (slight angle).  Good to know.







  

If I remember correctly - the 850 had 850 cast in the back of the block near where the water pump hose connection below the tappet covers. Many 850 heads  didn't have the temperature sensor fitting hole just below the thermostat housing - but came with thermostat housing with sensor port (as in your picture). Also down the back in the same location - 998 had no cast number and no tag, 1100 they added a tag saying 1100.

Or just tell us what the engine number is.

The carbs,spacers and intake manifold look like ADO16. In the U.S. that usually means MG1100.  From the pictures about all that can be said about the engine is that it is small bore (850-1100). If you look at the back of the engine there may still be an engine capacity plate but it's not likely. The choke cable attachment plate looks like something that has been chopped and bent to fit (I'm pretty sure 'fit' is the wrong word).

You could check the stroke. Here are the specs in inches: 850=2.687 997=3.20 998=3.00 1100=3.296. Remove a sparkplug (disconnect the battery first) and put a piece of solid copper wire down the bore, leave the insulation on. A single strand of 12AWG romex or larger would be good. Rotate the engine until the piston is at its lowest point and mark the wire. Rotate the engine until the piston is at its highest point and mark the wire again. This distance should be pretty close to the stroke. I would try it several times and to see how stable the measurement is. It might be hard to tell the difference between the 997 and 1100 but you're unlikely to have a 997.

Kelley

Great input, thank you

The heater hose connection to the head looks to be at the right angle for an 850. You also have the (very) early heater shut-off valve - later Mk1 cars benefitted from a cable operated valve, with the same bolt orientation.

The location of the throttle cable through the radiator bracket would make me nervous. Perhaps a previous owner installed a very long cable and tucked it in there to keep it from flapping about.

The vacuum line from the carb to the distributor also seems extremely long. Maybe it was a 1961 feature, though later MK1 cars had a much shorter line that went up and over the rocker cover, with an in-line vapour trap.

The way the choke cable is attached indicates to me that the dual carbs are after market, not a factory installation.

Dual carbs do not preclude it might be an 850. I added dual 1.125 carbs and an early cooper type exhaust header (the stamped metal type) to my first Mini, an 850. It did help!

Hi all,

I finally have this 61' Morris Mini running after sitting for almost 20+years....carbs defintely need an adjustment and seem out of sync, but it runs :)

I am curious what engine this may be?  I was always under the impression it was the 850 but didn't think the 850 came with dual carbs?

 

Engine plate is missing and I'm not sure looking at the heater connect?

Anyone have some input?