hey iv got an n reg 850 t5 with 230k on the clock what smokes when its cold just asking if any1 could tell me wot it is? iv got 3 things wot i think it could b valve seats, turbo seal or or piston rings can u do any test so pin point this or is it just trial and error?
if so how much would i have to pay to buy a low millage engine with turbo and manifold?
im thinking about getting it to 300bhp so a second hand modded turbo would b good as well
thank u rob
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