Transplant

[Gary Derian]

That was the Hirth roller cranks for the Porsche 356.

If there are too many rod journals between the mains, it  difficult to oil
them.  Ferrari F1 flat 12 engines from the mid 70's had only 5 main bearings
and used rollers for the rods.

Gary Derian <gderian at oh.verio.com>
Subject: Re: Transplant


> There were (aftermarket) roller bearings available for VW air cooled
> engines (probably still are).
>
> At 09:13 PM 5/3/99 -0400, you wrote:
> >CLsnyder wrote:
> >
> >> >
> >> Some engines were MADE with spinning inserts - bearing material on both
> >> sides. Others use a loose cage rollers, with the rod being the outer
race,
> >> and the crank the inner. Obviously the latter are NOT pressure lubed.
> >What engines used roller bearings?  What applications?
> >Shannen
> >
> >
> >
> Thanks,
>         Peter Hipson (founder, NEHOG)
>         1995 White NA Hummer Wagon