15 replies to this topic

[karlreno2015]

Hi there,

 

I have stripped my engine as i was doing an engine rebuild. However the engine isn’t the correct one for the car, the engine that i am rebuilding is a 998cc engine whereas it should have a 1098cc engine so as you can imagine i am not happy about this. I have found an 1100cc gold seal engine for sale but was wondering if anyone could help me in identifying if its correct.  The engine number plate is BHM1042 ES68059 but it also has AD stamped on it. On the back of the engine block it has 12A467 cast into it. So can anyone tell me if this engine is a genuine 100cc gold seal engine.

 

Many Thanks

Karl

[nicklouse]

Your engine number was for a 1098 what makes you think it is not actually one? 

[whistler]

Both 1098 and 998 used that block as standard.

[Ethel]

That casting number just makes it a small bore block. There isn't really any difference externally if you're not trusting the engine numbers.

 

What's the casting number on the cylinder head, under the rocker cover?

[whistler]

You really need to post the casting mark on the crankshaft to find out for definite. Both 1098 and 998 use that block but with different crank and pistons.

[nicklouse]

The BHM1042 engine number is A series New and Gold Seal units for Clubman and Special, 1974-1980 so no different to the last engine number you gave other than a factory replacement.

[karlreno2015]

The numbers on the back of the block of the engine I have now is WFM 1026 and the number underneath the head says WFM 1026/4 N W X. However last night when I removed the pistons, 3 pistons were the same and one was different. When I did some research it said the pistons was from a 998cc

[Ethel]

If you've got it in bits just measure the crank throw. You don't need to be very accurate to tell a 3 inch 998 from a 3.3 inch 1098.

 

The WFM number suggests it's A+, so you could find yourself needing a few more parts to cobble together a working engine if the Gold Seal unit is Pre A+.

 

What's the Mini - Mk4 Clubby?

[karlreno2015]

It’s a 1980 clubman so I’m guessing so

[nicklouse]

1980 could have an A+ engine from new.  First thing to do is check the crank.

[karlreno2015]

Okay i will check the crank, the thing that threw me was the pistons as they are flat top and have numbers on them but one of them is different to all the other three numbers.  But if its not a 1100cc i will have to get an 1100cc engine as the one i mentioned at the beginning, asking whether the one i was considering buying is a genuine 1100cc gold seal engine.

[karlreno2015]

I have the crankshaft out and its got a part number on of 12A1451 R.  I have researched this part number and it comes up as a 998cc crankshaft when the engine should be a 1100cc. The part number for the 1100cc crankshaft is 12G82 which mine is not so this tells me my current engine is a 998cc and not an 1100cc engine. 

[Spider]

I have the crankshaft out and its got a part number on of 12A1451 R.  I have researched this part number and it comes up as a 998cc crankshaft when the engine should be a 1100cc. The part number for the 1100cc crankshaft is 12G82 which mine is not so this tells me my current engine is a 998cc and not an 1100cc engine. 

 

That is indeed a 998 Crank.

 

 

If you are considering buying another engine, one way you can check if it's 998 or 1100 is to remove all the spark plugs, turn it over until No.1 is at TDC, then use something like a piece or 1/4" timber dowel, poke that down no. 1 Spark Plug hole, holding it as upright as you can, make a mark on the dowel at the spark plug hole. Then do the same on No. 2 cylinder and measure between the marks.

 

While it won't give exact measurements of 3.0" or 3.3" it will be close enough to quickly see which of these 2 strokes you have.

[karlreno2015]

 

I have the crankshaft out and its got a part number on of 12A1451 R.  I have researched this part number and it comes up as a 998cc crankshaft when the engine should be a 1100cc. The part number for the 1100cc crankshaft is 12G82 which mine is not so this tells me my current engine is a 998cc and not an 1100cc engine. 

 

That is indeed a 998 Crank.

 

 

If you are considering buying another engine, one way you can check if it's 998 or 1100 is to remove all the spark plugs, turn it over until No.1 is at TDC, then use something like a piece or 1/4" timber dowel, poke that down no. 1 Spark Plug hole, holding it as upright as you can, make a mark on the dowel at the spark plug hole. Then do the same on No. 2 cylinder and measure between the marks.

 

While it won't give exact measurements of 3.0" or 3.3" it will be close enough to quickly see which of these 2 strokes you have.

 

So i take it this means that my engine is a 998cc engine and not a 1100cc engine

[Spider]

 

So i take it this means that my engine is a 998cc engine and not a 1100cc engine

 

 

Yes, 998 (or an over-bore of that, which won't make it much bigger).