Selection of Material for Tappets
Selection of Material for Tappets
(OP)
Hi,
One of my customers has raised an enquiry for mechanical Tappets for a multi cylinders passenger car engine
Can anyone advise us on relative advantages of Tappets manufactured by the Chilled Iron route Versus Cold Forged route and vice versa.

Many thanks
One of my customers has raised an enquiry for mechanical Tappets for a multi cylinders passenger car engine
Can anyone advise us on relative advantages of Tappets manufactured by the Chilled Iron route Versus Cold Forged route and vice versa.

Many thanks





RE: Selection of Material for Tappets
Some of his ads stated that his lifters were not made of chilled iron.
RE: Selection of Material for Tappets
By the way, the cold forging process results in high mechanical properties (but not always wear resistance) and small dimension variation.
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Selection of Material for Tappets
I found your information valuable. Thank you for the same. Can you please elaborate on "low-friction coatings like Diamond Like Carbon, etc."
Is it similar to "Molycote", used by Toyota and other Japanese OEs?
RE: Selection of Material for Tappets
http://www.morganadvancedceramics.com/diamonex/
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.