Valve seat question
#2
Registered
Thread Starter
Re: Valve seat question
I have aftermarket aluminum heads. I was reading the spec sheet and instead of referring to the seats as "hardened", they just called them "ductile Iron".
Trying to determine if they need upgrading or are they good stuff?
Trying to determine if they need upgrading or are they good stuff?
#4
Registered
Thread Starter
Re: Valve seat question
Originally Posted by sutphen30
those are street heads,hope your in fresh water,if your in salt you should have gotten copper berillium.even my street guys use the later.
#6
Re: Valve seat question
Originally Posted by sutphen30
those are street heads,hope your in fresh water,if your in salt you should have gotten copper berillium.even my street guys use the later.
Bill I thought the Beryllium Copper was for titanium valves??????
http://www.delwestusa.com/manufactur...at_inserts.asp
http://www.aa1car.com/library/ar993.htm
http://www.aa1car.com/library/2004/eb50428.htm
some more ,,,,,,,http://www.popularhotrodding.com/eng...305em_bigbang/
,The cast-iron heads manufactured by Pro Action all receive ductile iron seats, as opposed to sintered units. They are machined and pressed in, and have proven to be hard-wearing and compatible with leaded race fuels. They are comfortable running with either steel or titanium valves. Even when you pull the heads out of the box, you can feel the smooth transition between the iron head and the seat, and realize it is certainly no flow restriction. Pro Action's aluminum head valve seats are made of copper-beryllium, which run cooler in the aluminum heads than in cast-iron surroundings.
__________________
.
The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
.
The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
Last edited by Strip Poker 388; 02-02-2005 at 01:26 AM.
#8
Registered
Thread Starter
Re: Valve seat question
OK I am not sure why the salt water should affect the valve seats unless you are thinking water vapor coming back through the exhaust.
Are the canfield heads hard anodized inside the water jackets too?
Are the canfield heads hard anodized inside the water jackets too?
#10
VIP Member
Re: Valve seat question
Hey 2112--
What brand heads did you buy?? Just curious.
Thanks
What brand heads did you buy?? Just curious.
Thanks
__________________
Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
Want your ECU tuned right?? Call Mark at Precision www.pmefi.com