On3 offers a 78/75 but I don't think I need itOk, I was assuming that based on the power you were talking, but wanted to make sure. I think 10:1 compression is a pretty rough starting point for a street car with a turbo, and it made me start wondering about your whole setup.
Isn't the 7875 a turbonetics? No personal experience here on that one. Maybe it's worth more power, but is it even a precision turbo? Might not be worth the quality difference. I'll leave that to your research. If you're really shooting for 700-800, then you won't be using up the 7675 precision turbo.
Do the reverse split spool faster and do u thing I'll have more backpressure problems with itYou know, I wouldn't even do the thinking on that one if I were you... you've got enough money in the build that you can spare < $100 for an expert. I just called Ed Curtis and asked him to do the cam. He did the reverse split one.
Yeah keeping the 10:1. Can't afford new heads or pistons. Looking to have a fun car again. Would the 1.10 cause too much lag?Are you keeping the 10:1 comp ratio?
1.10 a/r is the minimum I’d go with if you’re looking to make 700whp+. No reason to choke yourself out of the higher rpm range.
S475 with 1.10 housing would be my choice, But i’d Probably go e85 if I was looking at your c/r.
Correct. That’s why you can go with a tad bigger a/r with a twin scroll. You may lose a bit of power at higher rpm, but you’ll have great mid range drivability. Realistically you won’t need super high boost numbers if already making 400+whp n/a to hit the 7-800hp you’re after, provided the rest of your induction setup is up to snuff.A/Rs of twin scroll turbos can't be compared directly to singles. They act like smaller single A/Rs.
What's your thoughts s475 T4 or T6 for my application? What size compressor and turbine? Again looking for fast spool without back pressure problems 5 speed carAre you keeping the 10:1 comp ratio?
1.10 a/r is the minimum I’d go with if you’re looking to make 700whp+. No reason to choke yourself out of the higher rpm range.
S475 with 1.10 housing would be my choice, But i’d Probably go e85 if I was looking at your c/r.
Are you keeping the 10:1 comp ratio?
1.10 a/r is the minimum I’d go with if you’re looking to make 700whp+. No reason to choke yourself out of the higher rpm range.
S475 with 1.10 housing would be my choice, But i’d Probably go e85 if I was looking at your c/r.
How will the compressor outlet size effect spool, boost curve, and back pressure 2.5 vs 3in outlet?A/Rs of twin scroll turbos can't be compared directly to singles. They act like smaller single A/Rs.
Awesome. The offer up to a. 96 ar. Do u think that's enough for me or will I run into back pressure problems. And thank you by the way for helping me out. This has been greatAwesome street turbo. Spools fast, makes all the power you're asking for and more. The CBB might give you ~300 rpm quicker spool. You will build boost in the high 2k rpm range and reach full boost around 3500 give or take without CBB. You decide if your wallet can justify it for the price. I don't think a billet wheel does much that a cast doesn't.
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