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Chev R

Turbo Advice Rb30/25

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Hello Everyone Chev R here from South Africa.

I am in need of advice from some of the guys that have done this before. I have checked a few threads on turbos that guys suggested and has been been covered.

My need currently is this I am building a Rb30/25 and have got my current turbo specs as follows:

Ar 70 compressor housing

Compressor wheel 58mm

Exhaust housing Ar68

Exhaust wheel 64mm

Now some of the guys I know in the drag seen here advise that the turbo will be perfect down low but will probably choke towards limiter maybe 6000rpm. What is your take on this please need some guidance🤯

I will be limiting rev range to 7000.

One of the guys I know offered me a turbonetics 7868. I will attach specs as per my research.

What I am after is is my turbo going to run out of steam higher in the rev range. If someone has had a similar turbo set up?

If so would the turbonetics be a good second option as this is being offered to me at a good price. 

Car will be used for street and once the covid pandemic passes at the race track from time to time.

Apologies posting again because I may have posted In the wrong forum. 

Would the turbonetics be a good set up for street mostly occasionally quarter mile track?

Basic breakdown of my build

Rb25det head a little work done to it.

Solid lifter ,solid cams, ported and flowed with Rb26 valves ,quarter's, retainers and lifters

Solid cams solid lifters , cams cut 270

Rb30 sub

86.5mm pistons , hastings rings

Oil restricted 1.5mm

Rods short peened , and arp rod bolts 

Rb25det oil pump

Rotating assembly balanced 

Appreciate all the help and assistance 

Brian ( Chev R)






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