I was just wondering if anyone has links to sites that have compressor maps for Precision Turbos? Right now i'm leaning between a SC61 or a GT35r, according to my math a GT35r will be an EXCELLENT match but i'd like to check out the SC61 on a compressor map cause I really don't think it's necessary for me to run a ball bearing turbo. I'd rather run the journal bearing and save myself another $4-600

 

Nobody? Cmon, I know there are a few turbo guru's on here, somebody help me out here

 

wouldn't the map be the same? the GT35R and the SC61 are almost identical just one is BB

 

I'm not 100% sure, do they have the exact same pitch and design of the wheels and also the housings?

 

The difference between the SC61XX (XX means different exhaust wheels/shafts) and the GT35R is the exhaust wheel only. A Compressor map is just that.. for the COMPRESSOR WHEEL, not the exhaust wheel. You're not going to find any true differences between the two regarding power because they are the same compressor wheel used; the only difference being the exhaust wheel that you use to match it w/ a more efficient cartridge. (Truth be told, really the GT35R exhaust wheel is what makes the damn thing shine, not JUST the fact that it has a ball-bearing cartridge.

Solution? Find a GT35R map and go with your calculations from there. If you know exactly what you're doing, you can extrapolate the exhaust wheel you plan to use from your SC61XX to compensate for the change in data.

 

So far i've found the GT35r compressor map and i'm put right into the 78% efficiency island with my math. I havent gotten into the the exhaust wheel so I guess i'll start looking into that. To be honest I want the GT35r but just don't want to pay for the ball bearing when it's not necessary for me. If I was in competition ect. I could justify it.