Scarborough Racing Developments

Dump Valves from Le Mans Sport & Sytec

return to home page

from: LE MANS MOTORSPORT

Diaphragm Dump Valves are suitable for all cars where an airflow meter is not utilised before the turbo - as the air flow is controlled before the turbo and installing a dump valve upsets the volume of air reaching the engine, causing stalling at idle. Loose piepwork is also a major problem that causes stalling at idle.

Where an airflow meter is used it is essential for ease of operation to use a twin piston type Dump Valve as they work straight out of the box. All Le Mans Piston DVs are suitable.

The noisiest dump valve is always the diaphragm type, as there is only one operating system. If you wish to fit a diaphragm type to a vehicle model for which it is not recommended, then it is suggested that an Extra Strong Spring (ref: LMA 231) is purchased to replace the standard type fitted to all diaphragm DVs. This has the effect of holding the diaphragm closed at idle. However, the engine will need fine tuning to make the DV work correctly.

 

Group A Diaphragm Dump Valves

ref: LMA 225/GPA

Dump Valve Fitting Kit

Closed Loop Single or Twin Piston Dump Valves

ref: LMA 225/CLS/S

ref. LMA 225/CLT/S

 

Twin or single piston Dump Valves with 3/4 BSP Spout & threaded - Weld on collar

ref: LMA 225/PTT

ref: LMA PTT/SPT

Diaphragm Dump Valve

ref. LMA 225

Single or Twin Piston Dump Valves

ref: LMA 225/PT

ref: LMA 225/SP

 

Single or Twin Piston Dump |Valves GPA

ref: LMA 225/PTA

ref: LMA 225/SPA

LE MANS MOTORSPORT - TURBO DUMP VALVE & FITTING KIT COMPLETE

Part Number

Turbo Car Application

Information

Dump Valve Type

Price (incl. VAT)

DVK001/S

Select specification:

Escort Turbo S2 90 on

Toyota MR2 Turbo

 

60mm T-piece

 

Standard Twin Piston**

 

£105.75

DVK002/S

Select specification:

Fiesta Turbo

Renault 5 Turbo

No air flow meter

Standard single piston

£89.10

DVK003/S

Select specification:

Sierra Cosworth Turbo 2WD

Sierra Cosworth Turbo 4WD

Escort Cosworth up to 1995

 

Cold Side Conversions

Group A single piston

Uprated spring

 

£125.23

DVK004/S

Select specification:

Impreza Turbo up to 1997

Impreza Turbo 1997 - 1999

Nissan Sunny Gti-R

 

Group A twin piston

 

£129.25

DVK005/S

Select specification:

Escort Turbo S1 & S2 >90

Fiat Uno Turbo

Fiat Punto GT Turbo Mk1

Volvo 850 T5/T5R

 

50mm T-piece

Air flow meter cars

 

Standard Twin Piston**

 

£99.88

DVK006/S

Select specification:

Escort Cosworth 95>

Nissan 200SX 89>94

YBP - Small turbo

Group A twin piston

£127.22

DVK007/S

Select specification:

Audi A3/A4 1.8 Turbo

Lancia Delta HF & Integrale

Lancia Thema Renault 21

Saab 9000

Volvo 440 & 480 Turbo

VW Golf Mk 4 1.8

 

 

Replaces the manufacturer's original closed loop dump valve

 

 

Group A twin piston

 

 

£99.82

DVK008/S

Select specification:

Rover 220/420/620

Cavalier/Calibra

Blanking spacer bypasses standard. Dump valve T-piece fitting kit.

 

Group A twin piston

 

£127.22

All kits contain polished aluminium dump valves & accessories (T-pieces etc) where applicable. Kits with red, blue or gold anodised parts  are available at an additional cost of £23.50 including VAT

Select colour:

 ** for cars over 12 PSL, please use a GPA type |Dump Valve ie: prefix part no. DVK005/PTA/S

Turbo adjustable Dump Valves from:-

Sytec adjustable competition dump valves have been specifically designed and engineered for use by serious and enthusiastic drivers. The range covers most of the turbo cars, including Subaru, Mitsubishi, Ford, Saab, Toyota, Fiat, VW & Audi.

Benefits:- Fast action piston, competition seals >300 deg C, adjustable dump pressure, alternative spring & key, easy to dismantle & clean.

TBV001 - Single Piston Atmospheric

TBV002 - Twin Piston Atmospheric

TBV003 Single Piston Recirculating

TBV001.25    £69.00

Select colour:

TBV002.20    £77.00

Select colour:

TBV002.25    £77.00

Select colour:

TBV002.34    £77.00

Select colour:

TBV003.20    £82.00

Select colour:

TBV003.25    £82.00

Select colour:

TBV003.34    £82.00

Select colour:

TBVA001    £6.50

Select colour:

TBVA002    £6.50

Select colour:

TBVA003    £7.40

Select colour:

Please note: All delivery charges quoted are for within mainland Britain. We currently do not ship outside the U.K.

To Order, please see Home Page   orClick here.