1975 1500 Long Shaft "J" Blocks?

[FUJIMO]

...were the long shaft 150's "J" blocks, or just the short shaft motors? thx

[Tom Smyth]

Only long shaft J blocks I have seen the serial n7mber on the block didn’t match the one on the mid section. Parts is parts.

[FUJIMO]

...imagine all these years, no one ever even bothered to look, or pay attention to this, because everyone simply payed attention to their short little shafts...and nothing else, lol... could be a goldmine of undiscovered J motors out there, right in plain site...still.

[FUJIMO]

...have any luck selling the house? (i know sales are slow right now.)

[nelson edens]

I am helping a friend sell some old Merc parts. There are some I-6 motors. One has the louvered wrap, but cowl says 1500.

How can I tell if any are J blocks. A pic would be great.

thanks, Nelson

[FMP]

Block stamp "J "


BTW why "J " code , who's idea or initial , one letter ahead of K, inside story ?

[FUJIMO]

...right at the same location as the serial number, stamped on the starboard lower side of the block. J motors had simular cylinder porting to the 1500XS, which is why it is sought after by the old inline six crowd. hard to see in this photo, but there is a J stamped at the beginning of the serial number...

[FMP]

1500XS , Transfer- 111°
Exhaust- 94°
Piston- 112°

There was a 20" by us in the 70s . It was said to be J. But if memory serves it was a 115 that was swapped. Maybe some old pics around .