ducati race Engine cylinder head & dyno tuning specialist bristol england

 

GAS FLOW PRICES

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Ducati all 2v new and old

 Standard 499 or Ultimate 639

2v cylinder heads are very time consuming to get right. The port shape has to be extensively changed.

Please be aware the older heads non (DS) only have the option of the Ultimate version because of seta/guide reliability reasons. The newer heads if guides are not requested or needed can benefit from performance seat cutting to bring the head up to near Ultimate spec but minus the guides.  Guides 18 each - Seat cutting 18 per seat.

         

This head has boosted a high compression 900cc long manifold bike into the 88hp range (see project 90hp superlight) and a 900cc fuel injected version to 97 hp.  Both  bikes do not use big bore kits.  This head has extensively re-shaped intake and exhaust ports, new 3 angled valve seat profiles, uses new Colsibro valve guides and your original valves which are restored modified and polished. Sometimes the valves are very worn meaning they cannot be restored. If your valves cannot be restored they can be changed for 1 piece stainless items at extra cost. This head  definitely has a bang for buck rating being much more than a spit and shine job.  2v bikes have poor valve guides too that leads to smoking and poor oil consumption. Colsibro guides correct this problem giving greater reliability of the valve stem to guide clearance giving a more reliable cylinder head.  Big valve versions are available on request.  You will need to phone for pricing and details as extensive flow bench testing and even more re-shaping of the port is needed to perfect.

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