Rootes group engine identify ?

[Paul N.]

1592 engines have a "1600" cast into the NA drivers side.
1390s and 1494s do not.

. . . . nor do early 1,592 blocks.

 

[Paul N.]

If the dipstick goes into the block, 5 main 1725, if it goes into the pan via a tube, then 3 main other size. While not absolutely definitive since there could be a mix of parts or alterations, this will probably be correct.

If there's a dipstick hole in the block, it's a 5-bearing engine but not all five-bearing engines were 1,724cc, some were 1,496cc with the same bore but a shorter 71·6mm throw crankshaft.

The dipstick into sump isn't definitive as an early sump with side dipstick tube will also fit a five-bearing engine. Any boat retro-fitted with a 1,724cc engine to replace the original 1,592cc engine will probably have an earlier sump and hence two dipstick holes as no late sumps had water cooling coils.

 

[v13311]

If this is Paul Norton, WELCOME BACK!!!! I remember your posts on the old board and have really missed the man who is one of the most knowledgeable sources of Sunbeam/Rootes knowledge. Please keep posting on ALL of the threads Paul.

Ed

 

[Paul N.]

You're too kind, Ed.

Yes, it's me. I went through a bad time after my mother and my Pyrenean Mountain Dog both died within four days and I just had to take time out and I know I let a lot of people down. - To all of them I apologise.

Anyway, to prove it's me, here's a photo of me working on one of my Albatross Alpines:-

 

[Paul N.]

The dipstick into sump isn't definitive as an early sump with side dipstick tube will also fit a five-bearing engine. Any boat retro-fitted with a 1,724cc engine to replace the original 1,592cc engine will probably have an earlier sump and hence two dipstick holes as no late sumps had water cooling coils.

. . . . . And here's an example of precisely that - a 1,724cc five-bearing engine fitted with all the marinising parts from an earlier 1,592cc installation with - check them out - two dip-sticks!!

By the way, this wasn't originally a Rootes Alpine Marine engine, this was a Sunbeam engine marinised by Albatross Marine. You can tell by the different sump cooling and various other differences.