Testarossa valves | FerrariChat

Testarossa valves

Discussion in 'Boxers/TR/M' started by Cruiser, Dec 17, 2011.

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  1. Cruiser

    Cruiser Rookie

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    Cruiser, Dec 17, 2011
    #1
  2. Melvok

    Melvok F1 World Champ Owner Silver Subscribed

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    I definityvely would not do that....; leave the engine as it is imo . :)
     
    Melvok, Dec 17, 2011
    #2
  3. Cruiser

    Cruiser Rookie

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    Hi Mel, when rebuilding the Testarossa's engine why buy the OEM valves and pay the F-pimp what they think it's worth. Why not instead get these valves rather that the OEM?
     
    Cruiser, Dec 17, 2011
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  4. Philwozza

    Philwozza Formula 3

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    Unquantifiable risk?????

    P
     
    Philwozza, Dec 17, 2011
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  5. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    Do a search on "SI valves" and read those ~40 threads. Without having done that (since it's your homework ;)), my recollection is that they are well-liked and well-known and have been successfully used by many -- just a thought...
     
    Steve Magnusson, Dec 17, 2011
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  6. Philwozza

    Philwozza Formula 3

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    I've just looked up the price for inlet and exhaust valves from Ferrari....OUCH.

    I can see the advantages of the Si valves now, what a cost saving for 48 valves!

    P
     
    Philwozza, Dec 17, 2011
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  7. Turbopanzer

    Turbopanzer F1 World Champ

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    Steve is right. A little trade secret....most manufacturers send the specs out on parts to be made. Ferrari is no different. The valves can come from any source as long as the specifications are met. There is a book within the industry as to all the vales made in the world and by whom they are made. By the book and see how little you pay for something when you know who makes it. Ferrari competes just like GM & Ford. Best price gets the job.
     
    Turbopanzer, Dec 17, 2011
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  8. Melvok

    Melvok F1 World Champ Owner Silver Subscribed

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    I meant: What was wrong with the original valves ? I did not see that ....?
     
    Melvok, Dec 17, 2011
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  9. Cruiser

    Cruiser Rookie

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    Hi sorry Mel, maybe I should have put it a bit more clearly. Apologies.

    I see Newman uses the stainless steel valves in his rebuilds. So I think it is the way to go when replacing the valves.

    What I would like to know Steve is, whether you and/or Newman would replace your OEM valves with these? According to my research they are the same specs as the OEM but the only difference is that they are SS. So they are superior than the OEM?
     
    Cruiser, Dec 17, 2011
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  10. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    No information, but, based on 30 seconds of homework, I would use them. If you do an internet search on "21-4N stainless steel" or "EV-8 stainless steel" it gives a lot of hits about these materials being used for valves in high performance engines by reputable suppliers.
     
    Steve Magnusson, Dec 17, 2011
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