by Hydrocw49 » Sun Jul 28, 2013 2:03 am
Hi, I have to differ on the previous answer. I have a number of HP40's, all original Austrian produced examples, including gold cup, silver star, in both front and rear induction configurations. All are fitted with steel liners and all are fitted with dykes rings.
I'm unaware of any of the liners being plated, hard chrome plating is normal reserved for brass liners when used in ABC configurations.
HP were always famous for the dykes ring configuration, it provided a very compact, lightweight and powerful 40 size engine which was particularly appealing in the early pylon racing days (70's). (I still use a 40 R on an original HP pipe in a very light multiboat and a front induction version in a tethered hydroplane capable on a good day of 85 mph!)It was comparable with the OS 40 SR (also with dykes ring) and was only surpassed when the likes of the ST 40X, rossi's and OPS's became available.
Incidentally, the HP40 dykes ring is interchangeable with webras 40 dykes ring
Regards
Dave