There are stock manifolds and stock manifolds... Some variants have been used on 1.9's developing well over 300 hp, but some are quite poor.For example, the stock 1.6 TD exhaust manifold doesn't work well at all.My engine will (according to today's knowledge) indeed use a modified stock exhaust manifold.There are one or two secrets to make them work, and as you will see on the end result, some arerather surprising.
...BTW your Bieber avatar is awesome.-Malone
Not trying to hi-jack your thread here so maybe messaging me would be best but: Where did you find these fittings?!My plastic ones are warped and leak *most* of the time.
Has the pump been bench tested? How many CC did it deliver and what is max RPM? I'm guessing at least 12mm piston to be able to support those 270hp on paper?