AD41A / AD41B mix up?

[dpb]

I have always taken my AD41's as 'B's due to there being no flapper system on the exhaust elbows.
However as part of major works being documented in another thread, the guys that have serviced my injectors have reported that the nozzles are those related to A's.
On an old thread on here I can see that 'B's have rubber coolant hoses instead of metal ones, though it doesn't say which hoses.
Come to think of it there are loose wires that have always dangled in the vicinity of where the flapper valve solenoid would be on both my engines.
So have I got 'A's that have been modified, or have I the wrong injector nozzles, I notice that most of the replacement parts I have bought previously have been common to both engines so maybe it doesn't matter much?

Any views?

 

[volvopaul]

I have always taken my AD41's as 'B's due to there being no flapper system on the exhaust elbows.
However as part of major works being documented in another thread, the guys that have serviced my injectors have reported that the nozzles are those related to A's.
On an old thread on here I can see that 'B's have rubber coolant hoses instead of metal ones, though it doesn't say which hoses.
Come to think of it there are loose wires that have always dangled in the vicinity of where the flapper valve solenoid would be on both my engines.
So have I got 'A's that have been modified, or have I the wrong injector nozzles, I notice that most of the replacement parts I have bought previously have been common to both engines so maybe it doesn't matter much?

Any views?

It will be a lot easier to look at the metal plate just below the injector pump on the block you will then see if its an A or B series motor.

 

[Double Vision]

Hi Dave
I always look at the intercoolers. The A's tend to haver a flat top to them and the B's have fluting. The A's also smoke like billio on cold start but the B's are pretty smokeless like the Kads.

 

[dpb]

Good point Paul, and so I find that they are AD41A, with flat top intercooler but definately no exhaust solenoid.....just a pair of dangly wires to where they may have once been!!

 

[Fishtigua]

I think you'll find most of the 'A' parts have all been superseded to 'B' spec, right down to the injectors.