Should I keep my turbo? Gt4202 or buy S480
04-30-2013, 10:41 AM
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Should I keep my turbo? Gt4202 or buy S480 Here is my dilema I purchased a Gt4202 (I was told it was a GT4788). Well now that I have it and know it is in fact a GT4202 (74.3mm) T4 1.28A/R. I am not sure if its going to work well. I have it up for sale and have a few bites but no buyer set and I am ready to get my car running. If I do sell it I am just going with a S480 T6 96mm 1.32 A/R or a S480 T6 83mm 1.10A/R.
Turbo specs
Wheel Inducer Diameter: 74.3mm
Wheel Exducer Diameter: 102.0mm
Trim: 53
A/R: 0.60
Turbine Specs:
Wheel Diameter: 84.0mm
Trim: 84
Exhaust housing: Precision T4 divided 1.28 A/R (I'll be making it a true twin scroll mainfold)
The car is a 2800lb 240sx Street 90% Strip 10%
Stock LQ9/t56 (Will be forged once it breaks)
Arp rod and head bolts
MLS head gasket
224/224 116LSA
Ls6 intake
1,000cc injectors
8an feed and return
Full boltons
I think with around 600rwhp the car will be fairly uncontrollable and more hp will be just bragging Hp. But I do want some room to grow. Dr turbo stated that its going to probably fall on its face after 5500rpms
Do you guys think I should just give it a try or sell it and go with the proven Borg Warner. I am hoping that with the car being so light, I may be alright with the smaller turbo, and also it being a 90% street driven car the spool will be faster than a larger BW? Thanks in advanced
Turbo specs
Wheel Inducer Diameter: 74.3mm
Wheel Exducer Diameter: 102.0mm
Trim: 53
A/R: 0.60
Turbine Specs:
Wheel Diameter: 84.0mm
Trim: 84
Exhaust housing: Precision T4 divided 1.28 A/R (I'll be making it a true twin scroll mainfold)
The car is a 2800lb 240sx Street 90% Strip 10%
Stock LQ9/t56 (Will be forged once it breaks)
Arp rod and head bolts
MLS head gasket
224/224 116LSA
Ls6 intake
1,000cc injectors
8an feed and return
Full boltons
I think with around 600rwhp the car will be fairly uncontrollable and more hp will be just bragging Hp. But I do want some room to grow. Dr turbo stated that its going to probably fall on its face after 5500rpms
Do you guys think I should just give it a try or sell it and go with the proven Borg Warner. I am hoping that with the car being so light, I may be alright with the smaller turbo, and also it being a 90% street driven car the spool will be faster than a larger BW? Thanks in advanced 
