I don't get it. The 2 liter is not good because the 1.8 destroys itself over 3 bars of boost? What kind of an argument is that? Who in their right mind would EVER go to 3 bars of boost? Is there a turbo that can give you anything over 25% efficiency or something at 3 bar?JimGreek wrote:You are right about the 2liter liners being a problem. The 1.8T has proven reliable here with almost 3bar (44psi) making 475hp on BP Ultimate pump gas and 550hp on race gas. 1.8T liners have split at 3.2bar (47psi). If you really want 2liters, you must definitely go to a monosleeve and you're looking at 1500Euros plus block machining. In the 2liter, you will also need forged pistons, while the 1.8T goes to 450hp with stock internalls. Is it worth it? In my opinion, no.
Jim K.
IMO you should get your head checked if you build an engine like that.
11% displacement increase shouldn't be turned down because "liners crack", Liners don't crack unless you do someting seriously wrong, usually pre-ignition or just BAD timing -> incredibly high peak combustion chamber pressures.
I'm building a 2 liter turbo and of course I'm doing it with forged pistons, again, who in their right mind just slap on a huge turbo and gets upset if the stock pistons fail? Are we talking cheapness monkey tuning or building a proper engine? Kolbenschmidt makes a great set of replacement liners for a very decent price. Why even considering using old rusty liners?