Any comparisons with s475 t4 vs t6?
Thread Starter
Launching!
Joined: Jun 2010
Posts: 255
Likes: 1
From: Alberta, Canada
Any comparisons with s475 t4 vs t6? Just like the title says, does anyone have a direct comparison between the two, with the 75mm compressor and 83mm turbine? All other things being equal, how much difference does just the different flange make when it comes to back pressure, spool, power, etc? I realize this would probably be a pointless experiment in most cases, I guess I am just wondering if the flange can actually cause a restriction with a small turbine like that.
Thread Starter
Launching!
Joined: Jun 2010
Posts: 255
Likes: 1
From: Alberta, Canada
Already have the t6 version. It's in a 2004 Silverado 1500. I basically just started this tread for curiosity/discussion sake. If you're curious about what I have: it's a KB t6 kit, 475/83, 91 octane/meth. Truck has a 4.8, but kinda burnt a hole in the number 3 piston when it was getting it professionally tuned. With 10* timing, 80/20 meth/water, 15lbs boost, and 91 octane, no knock detected, lol. I suspect that one of my new 77 lb injectors are extremely shitty, giving it just enough fuel to support combustion and start burning the piston material, but not enough for a knock. We shoved a camera down there and there was a hole burnt through the piston the size of my thumb. I have an l33 to go in there, just haven't had the time to get it in. I'll probably just run zr1 60# injectors and stick to low boost for the first while. Anyway, that was a huge ****-off. I was just curious if the size of flange makes much of a difference with that small of turbine. Not that it's any concern of mine, I already have the t6.
Launching!
Joined: Oct 2006
Posts: 201
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From: Grand Rapids, MI
Jack
