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Dagwood

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I have a (by a previous owner) fully restored BN4 from -57. The cylinder head has been replaced with a later 6 port version (AEC 960) and it has two HD6 carburettors. The engine runs like a dream and it is proper quick. Are there any exterior differences between the 2.6 liter block and the 2.9 liter version. The engine number matches the chassis number and therefor it should be a 2.6 but the little plague is easily changed. It would be nice to know if my engine has been exchanged at some time. Thanks
 
Dagwood,

The 100-6 2.6 liter blocks have "AEC 335" cast into the drivers side.

Duane
'58 BN6
 
Wow, thanks for all the help. It turns out I have the original 2.6 liter block which was a bit of a surprise considering the power output. Maybe the camshaft was changed together with the cylinder head. I guess I won't know unless I take it all apart.
Thanks again.
///Chris
 
Is there a similar way to positively ID a 29K long block, absent the engine tag and pulley/damper? Clausager's says from 29K/279 "Longer dipstick positioned higher up on cylinder block.", but it doesn't indicate where it should be relative to other engine features, e.g., distance to top of block.

Thanks!
 
Oldnovice,

I do not know if the 29K and 29D(3000 MK I) blocks are the same casting, but the 29D engines have "AEC 881" cast into the driver side.

Duane
58 BN6
 
Thanks, Duane. I'm going to look at what is represented to be a 29K engine (but the tag is off the block)on Monday, so this info will help.
 
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