engine numbers help please

[rae80inch]

hello ive got 2 spare engines as well as my orginal I was hopeing to build 1 out off the 3 the spare engines are gold seal engines I don't know iff they are all compattble the gold seal engine numbers are 8G126 R J26402 AD THE OTHER IS 8G163 R M 82393 A D can any body help thank you ,rae

[LouiseM]

Are the engines all the same eg 1098cc, 948cc ? The prefix 8G signifies that they are goldseal A series engines but the other numbers don't actually tell you anything about the engine size as they are just factory job numbers.

[rae80inch]

thats what idd like to know are they the same how do i find out ,rae

[bmcecosse]

You look at the left side of the block - if it says '950' in the casting - there's a clue. Also take the rocker covers off and look at the head casting number - 12G202 is for a 1098 engine. There's always a vague chance that someone has fitted a 202 head to a 948 - but unlikely if everything is 'gold'.

[rae80inch]

so a 1098 would have 1098 cast on the block then is that how i tell its a 1098 ,rae

[MorrisMinor-65-1000]

There's a pressed aluminium tab with '1100' on it by the crankcase breather pipe, but this could easily have fallen off by now.

[rae80inch]

is there anything else to look for ill take some photos and post them .rae

[PSL184]

Pressed steel backplate on a 948. Cast one on a 1098.
Stock 948 manifold is squarer that the 1098 one.

[MarkyB]

Pressed steel plate on a 1098. Cast into the block on a 948 ITYM.

[bmcecosse]

The 950 is the clue. If it's not there - it will be a 1098....simples! And the head number will confirm. The little stamped plate may not be present on gold seal units...... The HEAD is the give away...

[PSL184]

948 is pressed steel
[frame][/frame]

1098 is solid
[frame][/frame]

They are not interchangeable with the standard gearboxes as the clutch won't have the correct clearance, but can be swapped over to facilitate a 1098 box on a 948 engine and vice versa.

However, as stated, only 948's have "950" cast into the block so this is the most obvious way of telling.

[rae80inch]

excellent thank you all 3 are 1098 so great I can hopefully build something on a budget now great forum help there will be lots more questions to come ,rae