Topic: Whats The Diff in Ferra or Supertech Valves/Springs

[IBDRINKEN]

Just as the title says whats The difference in Ferra or Supertech valves/springs. Im trying to decide which way to go and need peoples opinions.

[Gentleman Jack]

The Name?  Is this a quiz?

[shabby]

Need more specs on them, single or double coil, how much seat pressure and so forth...

[IBDRINKEN]

well let me ask this just in general terms hich way would you lean

Supertech Solstice/SKY 2.0T Dual Valve Springs and Retainers 
Brand new Supertech Performance Dual Valve Springs, Ti Retainers and Spring Seats for the Pontiac Solstice/Saturn Sky 2.0T engine. Excellent performance upgrade for anyone pushing their engines past the stock rev limit or utilizing larger than stock lift and duration camshafts.

Machining of head is required for proper fitment

Supertech Valve Springs are made with premium Super Clean Chrome Silicone Vanadium Steel alloy for higher performance and durability at high RPMs and better memory.

Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions.

Computer software also allows us to make sure that the harmonics are well under control.

The Titanium Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure long durability.

Brand new set of (16) Dual Valve Springs, (16) Ti Retainers, (16) Dual Spring Seats


Ferrea Dual Valve Springs Chevrolet Cavalier, Cobalt, Saturn Ion Ecotec Engine Only


Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicone steel These springs are manufactured with state-of-the-art equipment. Ferrea springs are heat-treated and stress-relieved, which dramatically increases the spring's life. Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea valve springs provide the stability needed for high lift, high rpm racing and street car engines. Kit includes a set of 16 springs. MUST be used with the Ferrea Titanium.

Dual Springs - Turbo, Special Alloy
Requires Titanium Retainer #E11033 and Factory supplied Spring Seat Locator.
Note: For High Pressure use both Spring Seat Locator #SL1028 and Factory supplied Spring Seat Locator.





 

[shabby]

Machining of head is required for proper fitment

This is surprising, i would contact supertech for more info about this. I know matt @ zzperformance is running 78lbs springs and that seems to be the rating for the supertech ones, but he has some headwork done so maybe he did the machining.

Btw what do you need springs for, are you revving past 7000rpm?

[IBDRINKEN]

well here is my plan, i wanna build the motor so Im buying piece by piece until I have everything I need so any guidance is much appreciated. I have already ordered the arp head bolts and wiseco pistons to start. I want to replace everything so I have no problems later down the road.

[Critterman]

Supertech say they are for the sky/sol, Ferea doesn't mention either.

[IBDRINKEN]

i didnt copy it right but they are

[kennysabarese]

The GM Ecotec build book recommends springs and valves for different power requirements. Also ZZP has their own springs. They don't mention needing head work

ZZPerformance is constantly striving to make modifying your car more affordable and more reliable. Our latest product, 78# valve springs, does both.
Engineered to work with stock retainers or our optional chrome moly retainers, these valve springs are required when boosting your LE5 past 12psi, when increasing boost to your LSJ or LNF or when revving past 7k rpm.
 
With stock retainers in place, these springs will raise your seat pressure from 54# to 78#.
For cars running aftermarket cams, we recommend adding our retainers which increase lift capability by .025 over using stock retainers (coil bind at .475" lift)
 
These springs are compatible with all Ecotec platforms.

[kennysabarese]

The Ferrea valves are mentioned in the GM book on page 8 and 36

[Kelu]

The Ferrea valves are mentioned in the GM book on page 8 and 36

The "Keeper of the book" strikes again 

P.S. You know I couldn't hold myself 

[kennysabarese]

The "Keeper of the book" strikes again 

P.S. You know I couldn't hold myself 

HAHA 

 

[IBDRINKEN]

well then i will probaly go with the ferra valves