Info for the zetec peeps - valve springs.
#1
PassionFord Post Troll
Thread Starter
Info for the zetec peeps - valve springs.
After all the probs with the valve train on Col's 3dr we made an interesting discovery that i thought fellow zetec builders might appreciate knowing.
Not all zetec valve springs are equal!
The later black top focus engine has tapered valve springs with different caps. The were designed to be easier to open and therefore increase economy though reducing valve train losses.
The down side is that in a performance situation they are shite! Adsolutly no good for anything over 6.5k. Early zetec E valve springs are the ones to use as they are good for 7.5k. You can feel the difference between the two by squeezing them between your fingers.
Not all zetec valve springs are equal!
The later black top focus engine has tapered valve springs with different caps. The were designed to be easier to open and therefore increase economy though reducing valve train losses.
The down side is that in a performance situation they are shite! Adsolutly no good for anything over 6.5k. Early zetec E valve springs are the ones to use as they are good for 7.5k. You can feel the difference between the two by squeezing them between your fingers.
#5
PassionFord Post Whore!!
Join Date: May 2004
Location: Near Ipswich.
Posts: 4,976
Likes: 0
Received 0 Likes
on
0 Posts
If your using a black top head with 3 groove valves, i dont think you can use silver top springs as they use 2 groove valves and you will struggle to find a retainer that fits.
Trending Topics
#9
Colossal Pervert
Std silver-top springs are crap for turbo usage and typical/tired ones will float at around 170-200bhp.. Pipers uprated single spring for the zetec is fine to about 300bhp.. after that you need double.. It appears for the blacktop a company called Ferrea sell a double spring conversion with titanium retainers etc.. about £300 for the set - BUT their website says you need to use their valve guides too.. not sure why.
#10
PassionFord Post Whore!!
Join Date: May 2004
Location: Near Ipswich.
Posts: 4,976
Likes: 0
Received 0 Likes
on
0 Posts
When I spoke to Piper they recomended there spring and retainer set VSSFOC16 for my black top Zetec turbo, only strange thing is that set is for a 1.6
#11
Engine Machinist
iTrader: (1)
i have the answer for that one, you'll struggle to find a stem seal that will fit inside them! hence why i've modded my guides if you look at my latest post on my resto thread.
the zetec stem seal is a one-piece affair (incorporating a spring seat) that dosen't lend itself to having double springs at all.
the zetec stem seal is a one-piece affair (incorporating a spring seat) that dosen't lend itself to having double springs at all.
#13
PassionFord Post Whore!!
#17
Too many posts.. I need a life!!
Join Date: May 2004
Location: Netherlands
Posts: 601
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post