Apologies for resurrecting a thread from the past, but as it seems that at zero posts (and 6+ years of lurking after registering) I can't start a new thread, this might be the most relevant and least annoying way to do this.
In essence, I'm looking forward to building a large-displacement YB, tall deck alu block + stroker crank. I'm only aiming at between 500 and 600bhp, but I insist on having a broad powerband and good.. no, scratch that, great throttle response. Approximately 9-9.5:1 compression, twin scroll EFR7163 or 7670, E85 as a possibility. Probably with a (still experimental) diverting quick spool valve on a split (1+4/2+3) manifold.
What are my options for a 2.5l+, possibly even 2.6...2.7l bottom end? I know this won't be cheap when everything is said and done, but keeping it a bit more reasonable than writing an open cheque to a high-end engine builder sounds like a good plan at this point.
Hi, speak to Mark Shead. He has a lot of experience but this turbos would be perfect on a 2.2 stroker. I think the 2.5 and higher are designed for naturally aspirated builds. 2.4 will rev less.
7064 is thought to maybe build too high back pressure on a 2.2 but should spool up in an amazing way. We are going to try it then upgrade to the bigger turbo. Throttle bodies should improve throttle response too. Mark shead head spec and cams worked brilliantly with a 2.0 recently and mine was great without head and cams. Can’t wait to try my stroker though.