*P89104*

[John Clarke]

Hi all
Just starting to strip this engine down of all the outside parts, ready to inspect and see what work is required. I believe this engine to be a 616/2 Super.
It is not the car's original engine but fairly close ref numbers. Without researching, I thought I would ask here what the bolt is, located above and behind the crankcase drive pulley ? Also is that cutout on the drive pulley oil seal housing for removal?
I do have an original copy of Harry's "Secrets' book. I really must sit down and give it a proper read!
T.I.A for any replies
Cheers Jay

[Martin Benade]

That may be the #4 bearing retainer bolt, basically a dowel pin, if you mean the one pointing toward the crankshaft axis.

[John Clarke]

Thanks Martin
Now the generator and support is removed the stamping on the case is much more clear, and is stamped 612/12
But Engine Number on the 3rd piece is P89104 ! Which I thought was an early Super engine (616/2)
Not sure what I have here!
Regards Jay

[Max Handley]

T5 B 1961
Engine number 89104 is a 1600 S (Type 616/2 T5), part of range 88321 to 89982.

[John Clarke]

Hi Max
Thanks,That's what I thought! Perhaps the 3rd Piece is a replacement (with the 616/2 Number) ?
Now with the Engine Type number on the crankcase showing 616/12
What are the differences between the 616/2 and the 616/12 ?
What do I look for?
Cheers Jay

[Max Handley]

Good question. The records show 616/2 as an S case for years 60 to 62 , & 616/12 as an S case for years 62 to 63.someone more knowledgable might step in here ....Vic
My guess is a 61 S front cover ( 3rd piece ) married to a 62 or 63 S case ?
Both rated at 74 hp din.I believe so the difference between the cases would be minimal I’d guess.

[Craig Richter]

A 616/2 case probably did not have the flywheel area reinforcing ribs. My '60 S90 did not have the ribs. I think the 616/12 cases did have them. Other than that, both cases have the preferable large oil pump and should be the same. Some other changes, like a larger diameter oil pick-up tube came later, I think. Maybe I should read Harry's books again too...