any one know the answer????

[gav44]

i've got an a4 1.6, with the engine code 'AHL', a replacement lump is proving hard to find, the year before my motor (r plated 98) the eng. code was 'ADP'. What i want to know is if they are interchangable, that is take an 'AHL' out of my car and put an 'ADP' back in? i have the earlier lump lined up and am just waiting to know before buying it. thanks for any input

[Crasher]

The ADP is an intermediate shaft engine with a distributor and the AHL does not have an intermediate shaft and uses a coil pack. To use an ADP would involve making many modifications, too many for me to list.

[lee58uk]

hi i have a 1.6 ALZ 2000, it seams that the 1.6 are very hard to find engine parts for, the same when you buy parts from CAS, or any other parts shop they cost 3 times more than the older ADP, i am in middle of rebuilding my ALZ engine rings, hone etc, as was smoking and steaming out back!

[Crasher]

The ADP is pretty much the same engine as Audi used from 1974 with the bore spacing update in 1983.

[gav44]

thanks lads!!!! you have just saved me wasting money, i have just found a 99,000 mls ahl for £250 with a year guarantee so it looks like i'm going for that, also i have found an 'AHL' that the owner says was from a 1.8 passat??????? surely a 1.8 lump would have a different eng code? could it be a tryping errot and meant to read 'ALH'? i am now terribly confused, how many configurations can eng codes have???????

[Crasher]

The AHL is a 1.6 100PS petrol used in the Passat from 10/96 to 06/99 and in the A4 from 10/96 to 7/99 so is only used in longitudinal applications. The ALH is a 1.9 90PS TDI used in transverse applications only. The only engine code I have come across where there are two different versions of block is the Polo 6N2 GTI and Lupo GTI where both have the code AVY but are not interchangeable.