Quote:
Originally posted by Brad Pfeifer
Thanks for all the input guys!
Mike55 and David,
I think you got things confused on your last note. Hydraulic ROLLER cams are made from steel. Standard, or flat tappet cams are nodular iron. You cannot use an iron gear with a steel cam - the cam will chew the iron up. You can also use a bronze gear with a steel cam, the steel chews it up still, but takes smaller bites.
With the steel cam I have, I need to use a steel gear or a bronze gear. I would rather use the steel gear - as I don't want to be changing this thing out every 1000 miles.
David I think you had it right the first time. Jack21 also has the answer. Ford Racing part # M-12390-F is a steel gear, with an inside diameter of 0.531" (page 63, 2001 Catalog) Lists for $29.95.
Brad
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Brad,
I'm relief reading this last post of yours as few posts here were getting me doubting my knowledge.....I also agree on the need of same material for the cam and distributor gears:
steel/steel,iron/iron. Mixing iron with steel would be calling for trouble.
I had bought a 12390-B (smaller diam. ) for my 289. It is listed in motorsports catalog as to be used with roller cam.
I haven't put it yet on my dist.here's why:
looking at it my machinist cannot say if this one I have is indeed steel or iron...
I've been told that the right gear (steel) should be carrying an orange touch of spray and mine has a yellow one......
To top it all I read somewhere that a steel billet lunati roller cam (like I have) can be ordered with a pressed-on cast gear.....On that I've sent lunati my grinding number and the guy answered me that cam number cannot fit my 289....oh well that's why I keept running bronze but one day I'll get that steel gear on!