Must-have hat geschrieben:Eingang und Ausgangventile haben ja unterschiedliche Dichtungen, warum ist das so?
hallo hakan,
sind das felpro-dichtungen?
da gibts eine begründung in einem us-forum.
ich hoffe das englisch ist verständlich,
ansonsten muss ich es versuchen zu übersetzen.
ursprüngliche frage:
- Using the FelPro engine kit and the valve stem seals come in two sizes. Since I have several gasket sets. I have enough to do the exhaust stems using the taller seals along with the intake valve. How bad/wrong would it be to use the taller seals for both types? Is there a reason for the shorter ones for exhaust?
zugehörige antwort:
- Yes there is a reason for long and short black rubber seals. "Some" manufacturers feel the shorter seal ( about 1/2 height helps lubricate the FAR hotter exhaust valve ( heat transfer into the stem) and cool it as well. The intake seal is still long ( like they all used to be) to "shroud" the guide from a large amount of oil that "could be sucked down the intake guide. Other manufacturers still provide " all one size" rubber seals. Standard rubber umbrella seals suffer from heat over time and become brittle , often flaking into pieces that find the oil pump . The other problem is they limit how much cam can be used as the increased lift allows the retainer to pinch it against the valve guide. Cams under .500 lift are "usually " ok.
vielleicht ist es die antwort die du gesucht hast.
gruß,
christian
The horse needs to respect you,
but sometimes people confuse respect&fear.
And they're not the same at all!
- Buck Brannaman -
http://www.fordstrokers.de
