Titanium valve spring retainers Audi S2/S4/RS

**FCP-ENGINEERING** · 16 February 2011, 18:51

up up up

**FCP-ENGINEERING** · 8 May 2011, 14:54

Price very good!!!

**FCP-ENGINEERING** · 9 July 2011, 14:30

bump bump

**Degaussmt** · 11 July 2011, 08:48

Hi! God for how many hp?

**FCP-ENGINEERING** · 11 July 2011, 15:09

Up to 800hp, springs holds up to 3bar boost pressure.

**aronmatic2** · 11 July 2011, 19:09

Originally posted by FCP-ENGINEERING

Up to 800hp, springs holds up to 3bar boost pressure.

what boost pressure has to hold for the valve springs?

**FCP-ENGINEERING** · 11 July 2011, 19:14

When engine run big rpm more when 7600rpm we have valve float, also if boost pressure very big, intake valves cant close.

**aronmatic2** · 11 July 2011, 19:23

Originally posted by FCP-ENGINEERING

When engine run big rpm more when 7600rpm we have valve float, also if boost pressure very big, intake valves cant close.

i tryed few years ago. how much pressure can holds the valve spring. the stock spring holded 4,5 bars without opening. that is why i asked.

**FCP-ENGINEERING** · 11 July 2011, 19:49

You done test in not working engine. When engine runs 8000rpm valve donot closing well if springs are stock.

**aronmatic2** · 11 July 2011, 20:31

Originally posted by FCP-ENGINEERING

You done test in not working engine. When engine runs 8000rpm valve donot closing well if springs are stock.

yes. thats what i meant. cant close the valves that fast, because of the high rpm, not the high boost pressure.

**Degaussmt** · 12 July 2011, 07:23

Why do you sell it?

**A80Avant** · 12 July 2011, 07:27

i think he owns a shop!

**Degaussmt** · 12 July 2011, 09:51

Ahnnnnnnnn.....:-o.....sorry!! Goooood!!!!!!!!

**FCP-ENGINEERING** · 12 July 2011, 12:37

yes i sell audi parts, springs, retainers, and rods.

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