If your only looking for 200hp an 11mm would do that with no problem. A 10mm will do 150hp. There wont be many advantages to the 12mm head unfortunately, disadvantages really being that you will be limited to like 3700-4000 rpms. HOWEVER! If that massive turbo will spool like a mother before 4000 (like 2500) then you have a good candidate for some mad power.
I feel that the 300ft.lbs would be achievable at that point. It may require some knowledgeable pump tweaking, to do with advance curves though.
i bet with a proper turbo a 10mm can do more than 150hp, lets not forget daves 1.6 that did 195whp with a 9mm pump. or joshs car even, he did well over 200hp with a 10mm pump on his 1.6. i guess the difference is much larger turbos than people usually use on a tdi and also perhaps revving higher since ve pumps can only move so much fuel per stroke so the higher u rev the more fuel u can move, tho u still can move put so much in per combustion. but also just to be contradictory, i have heard(note that means this is hearsay) that 12mm pumps can be revved higher but you need to have high flowing injectors, which makes sense to me, but i'm not about to go try and break a 12mm pump haha.
yesterday i was driving home from getting supper with my lovely lady when i got behind a jeep the bumper said "Yes it's supposed to smell like that" and the license was "DSL-JEEP". when the light turned green it was obvious he was running bio or wvo haha. so the next light i blew a bunch of black smoke while we were sitting there, and at the next light i was able to get next to him(york, pa has alot of redundant traffic lights) i said hey is that a 617 and he says yep (light turns green pull to the next one) and i asked "hey do they make an adapter for that or did u have to do it your self?", he said "i made it, and i sell them
mercedesdiesel4x4.com" cool right? haha anyways that light turned green, and the turbo on it sounded great. those mercedes have a lot of power potential, but i don't think they had much power stock haha.
