Re: PTV's 1951 Packard 200

Posted by HH56 On 2016/6/23 20:15:46

I'd go ahead and use the tee as is with one of the smaller side holes to the filter. The orifice was used on the pre and immediate postwar 356 engines with hydraulic lifters and some of the smaller engines with optional lifters. By 51 when hydraulic lifters were more common the flows had been optimized. If you do have a problem with lifter noise then you can address it again. There is a discussion on site somewhere with the orifice size. I think it was .073 but would have to search bulletins to be sure.

1/4 steel premade lengths of brake tubing works fine although the color on most you find in stores is dark gray instead of the brighter galvanized color. Comes with two different sized nuts and flared ends. One nut is short like Packard used and since you will probably have to cut and flare the other end to length you can buy extra short nuts if you don't like the long ones.