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  • Stiffer valve springs - any budget solution?

    Soo, is there any cheap solution for stiffer valvetrain? Rosten performance seems not to offer anymore valve springs for stock retainers, only a kit for quite expencive 343 euros. I use rosten springs atm in the head that is in my UrS and no problem to rev up to 8100rpm with 7A cams, but I will need another set of springs.

    I heard a rumor that 5cyl 2.5l diesel engine uses about 30% stiffer valve springs that our stock springs, anyone tried those? Or does anyone now a source for some another budget solution?

    Edit.

    FCP offers springs for 240 euros. http://www.fcp-engineering.com/valve...attro-20v.html

    Audi UrS4 Avant 2.5 20vt - twincharged - Project
    Audi 80q B4 Sedan 2.2 20vt - Daily user
    BMW 320d Touring e91 M-Sport - Daily user
    BMW 740iA e38 - Project

  • #2
    034 do these:-

    http://store.034motorsport.com/valve...5-cyl-20v.html
    sigpic
    1991 Audi S2 3B - 2.5 Stroker engine
    1997 A6 2.5TDi quattro avant - C4
    1976 RD250E / 350LC cafe racer

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    • #3
      + $68 shipping + tax and VAT. Too expencive. Seems that FCP can offer cheapest ones. But still a cheap ghetto solution intrests me. I know the guys in Baltic countries are quite inventive with their frankenstein engine builds, maybe they know some tips for this?

      Audi UrS4 Avant 2.5 20vt - twincharged - Project
      Audi 80q B4 Sedan 2.2 20vt - Daily user
      BMW 320d Touring e91 M-Sport - Daily user
      BMW 740iA e38 - Project

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      • #4
        I use schrick springs,but i dont remember what price was

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        • #5
          FCP is your best quality and price...
          We have fitted few
          Proven quality [emoji106]🏻
          Danny
          www.dnaautocare.co.uk

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          • #6
            Audrius S2 head fully with FCP parts equipted, cams, solid lifters, double springs. Running 9500rpm
            Audi S4 2.6 20V STROKER kkk26/27

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            • #7
              Originally posted by FCP-ENGINEERING View Post
              Audrius S2 head fully with FCP parts equipted, cams, solid lifters, double springs. Running 9500rpm

              Told you [emoji4]
              Proven quality [emoji482][emoji106]🏻
              Danny
              www.dnaautocare.co.uk

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              • #8
                Originally posted by FCP-ENGINEERING View Post
                Audrius S2 head fully with FCP parts equipted, cams, solid lifters, double springs. Running 9500rpm
                Do you sell cams too. What options.

                Sent from my LG-H955 using Tapatalk

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                • #9
                  Yes we sell cat cams, also we can do from aan 3b, but this cams only for solid lifters. This kit will be intake 282 degreee 11mm, exhaust 274degree 10.8mm lift.
                  Audi S4 2.6 20V STROKER kkk26/27

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                  • #10
                    Ok do you have any power graphs from these cams vs stock or 7a cams. What would you recommend for a stroker with head work, tube manifold and gt35r with billet wheel? I want power from 4k rpm to 7.5k rpm. Also what costs.

                    Sent from my LG-H955 using Tapatalk

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                    • #11
                      Bit of an old thread but thought better to post in here than create a new one.

                      I notice rosten valve spring kit is still cheaper than FCP with lower spring pressure on intake but higher on exhaust. Anyone running Rosten valve springs in their car?

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