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PRESTWICH TUNED PIPES FOR GAS ENGINES. 
 Zenoah Engine Tuning Software   Zenoah Marine Engines  
  
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NEW SIGMA 51" mono deep V

These high power tuned pipes are made from lightweight stainless steel, silicone bronze welded and guaranteed not to crack or breakup. They are very high performance pipes but are also suitable for sport boats and are complete with detailed instructions on getting the best from a tuned pipe. They fit over all the normal 7/8" (22mm) headers.  At the recent World Championships in Slovenia a Zenoah G260PUM powered boat using CS23A pipe was faster than the Quickdraw powered boats and faster than most of the 35cc boats.

CS23A  Lightweight competition stainless steel (brushed finish) pipe  with integral watercooled adapter that has 2 internal silicone o-rings and waterchannel that slides over the header to give a sliding watercooled joint. No other coupler such as teflon or silicone is needed and in normal use the internal o-rings will last for many hours. Dave Marles Designed £129.00   CS24A Lightweight, competition high performance, watercooled stainless steel silenced pipe for Zenoah and Quickdraw. This pipe has a short silencing section to fit inside deep V boats.Same pipe as CS24 but with integral watercooled joiner that has 2 internal silicone o-rings and waterchannel that slides over the 22mm (7/8") header to give a sliding watercooled joint. No other coupler such as teflon or silicone is needed and in normal use the internal o-rings will last for many hours. The silencer is a low resistance multi-chamber type and with other silencing measures can help to reduce the boat noise to below 82 db.  Dave Marles designed   A = 14.5"(410mm),  B = 2.4"(60mm),  C = 7/8" ( 22mm) £129.00 CS26 lighweight, high performance, aluminium silenced pipe for  up to 29cc gas engines. Ideal for converting the noisy Chinese RTR boats to enable their use under European noise laws.   The front pipe is 7/8" id  (22mm) and will fit over most headers, Hanson, MD etc and has a built in watercooled joiner that has 2 internal silicone o-rings and waterchannel that slides over the 22mm (7/8") header to give a sliding watercooled joint.  £57.00 CS28Stainless steel watercooled  tuned pipe with built in silencer and watercooled sliding coupler. Pipe length is adjustable but with this wrap forward type manifold can be fitted inside many mono boats. Fits over 22mm / 7/8" header pipes.   £57.00 CS29 Stainless steel full kit of wrap forward  watercooled manifold and watercooled stainless steel tuned pipe with silencer for deepv boats. Pipe length is adjustable. £78.00 CS30Stainless steel full kit of 90 degree watercooled manifold and watercooled stainless steel tuned pipe with silencer. Pipe length is adjustable. from exhaust flange to centreline of pipe is approximately 54mm £77.00 CS30AStainless steel full kit of watercooled 90 degree WIDEST bend manifold and  watercooled stainless steel tuned pipe with silencer. Pipe length is adjustable. From exhaust flange to centreline of pipe is approximately 75mm £77.00 CS31Stainless steel full kit of watercooled Wrap To Centre (WTC) manifold and  watercooled stainless steel tuned pipe with silencer. Pipe length is adjustable.  £79.00 CS32Stainless steel full kit of watercooled 105 degree manifold and  watercooled stainless steel tuned pipe with silencer. Pipe length is adjustable.  £77.00 CS34  Aluminium 2" band pipe with aluminium silencer.  With watercooled coupler welded on that slides over over 22mm ( 7/8") headers.  £59.50 CS40  Stainless steel silencer. Fits over 14mm pipe. £14.95   CS41  Aluminium silencer. Fits over 14mm pipe. £14.95   CS42  90 degree wide bend, watercooled aluminium  flange with stainless steel header pipe 7/8", (22mm) Flange to centreline of pipe 54mm £25.00   CS43  90 degree wide bend manifold header only. 7/8" (22mm) diameter. Flange to centreline of pipe   (54mm) £15.00 CS44 90 degree widest bend watercooled manifold header complete. 7/8" (22mm) diameter. Flange to centreline of pipe   (75mm) £29.00 CS45 90 degree widest bend manifold header only. 7/8" (22mm) diameter. Flange to centreline of pipe   (75mm) £19.00   CS46  90 degree narrow bend watercooled aluminium flange with stainless steel header pipe 7/8", (22mm) £25.00 CS47. 90 degree tight bend only. Lightweight stainless steel 7/8" (22mm) OD, 20.5mm id. flange to centreline of pipe 46mm £15.00 CS48 100 degree watercooled aluminium  flange with stainless steel header pipe 7/8", (22mm). Designed to bring the tuned pipe to the center of the boat on longer boats such as Sigma etc. £29.00 CS49 100 degree bend only. Lightweight stainless steel 7/8" (22mm) OD,  £15.00 CS50 105 degree watercooled aluminium  flange with stainless steel header pipe 7/8", (22mm). Designed to bring the tuned pipe to the center of the boat on shorter monos and cats. £25.00 CS51 105 degree stainless steel header pipe 7/8", (22mm). Designed to bring the tuned pipe to the center of the boat on cats. £15.00 CS52 Spacesaver watercooled complete header/ manifold for keeping the exhaust inside on monos. Manifold can be rotated to any angle. Stainless pipe 22mm (7/8")   £26.00 CS53 Spacesaver header pipe only. Stainless pipe 22mm (7/8")   £16.00 CS54  Wrap to Centre manifold stainless steel pipe with aluminium CNC machined cooling block 22mm od (7/8")   £25.00 CS55  Wrap to Centre manifold stainless steel pipe  only.    22mm od (7/8")   £15.00 CS60  exhaust flange.  CNC aluminium watercooled flange with orings for 22mm 7/8" header pipes. Very easy to fit. £13.00 CS61   NEW VS3 4 bolt. NO LEAK exhaust flange.  CNC aluminium watercooled flange that does not allow the possibility of a water leak into the exhaust gas and is machined so that the viton o-rings stay in position. Fits most 22mm 7/8" header pipes and includes one set of viton o-rings..   £21.95 CS65  Aluminium cooling jacket for 22mm, 7/8 headers. Slides over the header with oring seals inside. NEW £11.50   CS66 Exhaust mounting bracket for mono's cats and hydros. CNC machined aluminium. £15.50 CS69  Exhaust retainer, clamps onto header and has 2 brackets to attach to nipples. CNC aluminium with o-rings etc. £9.95 CS70 Spare 4mm x 22mm i.d. silicone o-rings to fit the watercooled tuned pipes CS28, CS29, CS30,CS31, CS32. 4 pieces. These o-rings are thicker than the o-rings used in the watercooled headers. £4.00 CS72  Spare 3.2mm x 22mm i.d. silicone o-rings to fit all of the the 22mm watercooled headers plus tuned pipes numbers CS23A,CS24A CS26, CS33, CS34. 6 pieces.  £3.00 CS74  Spare high temperature, 22mm i.d., 1/8" (3.2mm) section hard wearing VITON o-rings to fit the 22mm watercooled header and CS61 VS3 no leak flange. 6 pieces . £3.50 CS75  Spare high temperature, 22mm i.d., 3/32 (2.4mm) section hard wearing VITON o-rings to fit some exhausts.. 6 pieces  CS61 VS2 No Leak manifold uses 1 of these and 1 of CS74. . £3.50

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