legacybt Posted June 27, 2016 Share Posted June 27, 2016 Soooooooooo... I've recently acquired a 8.2 CR cosworth-internal'd longblock with KK3670 big port heads. It has a custom rotated EWG exhaust setup, and was running a twin scroll GT35R turbo. I know the heads on this engine aren't ideal for low-end grunt, but I'm going to run it anyway because - how could I not? I'm diving into research looking into smaller turbos to keep the setup less painful out at autocross (~20 psi by 3000 RPM), but don't want to go so small that it'll fall on its face at the 8000 RPM redline . I'd ideally stick with Garrett so it's drop in fitment with the exhuast I have, but am open to other options. I'll generally take improvements in transient response & spool over a couple whp. It'll be run on Canadian 91 Octane (according to many, more like 89 US) with a meth injection system My initial thought is a GTX3076R with the .83 twinscroll hotside - thoughts? Numerical data is appreciated. Link to comment Share on other sites More sharing options...
Max Capacity Posted June 27, 2016 Share Posted June 27, 2016 You should ask this question to a great Tuner like http://www.tuningalliance.com email Mike and ask him Mike at http://www.AZPinstalls.com may have good input too. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
quick4dr Posted June 28, 2016 Share Posted June 28, 2016 maybe twin scroll 1.5xtr I spool 19psi at 3k (single scroll) , mikey said he could have dialed her for 24 @ hair over 3k Link to comment Share on other sites More sharing options...
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