Why need 8500 rpm? My car 490hp and 670NM . At 3200 already 630NM and stays above 600 till 6k rpm . The horsepower max out at 6500rpm but from 3000rpm already have 300hp and just growing. This all numbers with g25-550 which is a limit in my factor i think ,but for me is totally enough and i knows the engine stay reliable.My engine a stroker build anyway 2.0l
Your statement is exactly the reason that 8500rpm will be useful for me. Because of the smaller g25 on your setup, the turbo starts to fall off sooner, long before your redline, but you benefit from all that low end response instead. For me, having the larger g35 will be the opposite. My low end will not be as strong, however my mid to high power band will be, and therefore bringing the rev range higher up to 8500rpm means I can lengthen the powerband on my setup and make use of it without falling off. Because of my goals in Time Attack, I will spend more of my time in the mid to high rev range than I will in the low end. So it is not a loss for me for my needs. 🤙🏼🤙🏼
I should also make note that my g35 MIGHT be too big for my current displacement. I still have a mostly stock bore at 1.85l (overbored to clean the cylinder walls, not for power gains). I do intend to go to a 2.0 or 2.1 in the future, however it's not in the budget, especially since mine is still very healthy. I originally planned for a g30 as well, but the g35 fell on my lap, so we're going to see what it can do!
@TheNeverEndingProject we gonna see I think 😊. Anyway do you have any idea how to check valve to piston clearance with head off? I mean I know with clay,but what about the hydraulic valve lifters ? They can be bleeded out and the hydraulic tensioner also not working properly without oil pressure.
Thank you! I have not given an air-to-water intercooler a thought. It doesnt really work well for my application and adds various points of failure for a system that isnt all that efficient for extended use under load.
gtx28 - ForceFed Engineering g35 - Grayfab As far as which I prefer? Not really sure that I prefer one over the other. Theyre both similar in design and are marketed as "equal length tubular". That aside, the only notable difference is the collector. The Grayfab utilizes a billet machined collector (near perfect geometry) where the ForceFed Engineering unit is traditionally constructed with hand cut and welded tubes. Performance wise, well, I probably cant say. The two setups are substantially different from one another, so theres no real or fair comparison there. If I were to make a choice though, I really appreciate the machined collector on the Grayfab unit.
