bullseye s478 single

Rollin Coal said:
what are the exduces for them chris? ??, 74, 82, ??, 88

if the 80 is a 73.4-80 like the s300, is it a clipped turbine wheel like the s300?
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Its a 73.4 exducer full fin (non clipped) and is a different trim than the typical John Deere "bullet" S300 wheel.

I will put a picture up of the S300 74, S400 80 and the S400 83 so you can see them.
 
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ok so since the 80mm wheel does exist could a 76/80/.80 start to build any boost close to 2000rpm ?
 
Just do the turbo i have man,...... Mine is only a 71mm inducer but i dont have ANY surging problems. I was thinkin of going to a 74mm comp wheel to just to see for myself...... Mine is a 71/74/.9, would finding a 74 mm compwheel cause surging ??
 
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murphy41 said:
Just do the turbo i have man,...... Mine is only a 71mm inducer but i dont have ANY surging problems. I was thinkin of going to a 74mm comp wheel to just to see for myself...... Mine is a 71/74/.9, would finding a 74 mm compwheel cause surging ??
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the thing i want to know is, why run such a big turbo? a 71mm ett wheel is good for close to 900 horsepower. if your at 550 with a 71mm turbo you'd probably be making more power with a 65 or 66mm s400, or even an s300
 
I made 550 at my elevation, 623 corrected. And NOO tuning, I actually did alot of tuning today and the truck is makin WAYY more power. So if a ETT 71mm is capable of close to 900hp. Sounds like ill be sticking with my turbo lol
 
murphy41 said:
I made 550 at my elevation, 623 corrected. And NOO tuning, I actually did alot of tuning today and the truck is makin WAYY more power. So if a ETT 71mm is capable of close to 900hp. Sounds like ill be sticking with my turbo lol
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sweet man, i didnt mean to imply that it couldnt be used, i was just wondering if it was going to be.
 
ashley black has a bullseye S475 83mm .90 housing on a CR and it spools great and drives great on the street too. i think he has run some 11's with the truck too.
 
Rollin Coal said:
sweet man, i didnt mean to imply that it couldnt be used, i was just wondering if it was going to be.
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No worries, i find it kind of pointless to post a corrected number. But i want to try and get this thing tuned, get my studs in and ramp the timing to see what it will do...... Im in a rut now and dont know what to do to tune this thing.....

But i do really like this turbo. I put a stock GSK spring in the AFC housing and it spools VERY nicely and easily streetable ! If you wanna go for a ride Jeff just let me know, to see how she acts on the street.
 
Bump ! I wanna see some pictures of these turbine wheels Chris,... Your posting some great information !:thankyou2:
 
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