Best Turbo for 550-600 hp

[RShipp]

Hey guys, I'm new to the TDR, and I have a question. I was wondering if anyone has had any problems with the HX40 turbo. I know that the HX40 is just a HX35 with bigger wheels and people say that they are weak. Has anyone ever broken a shaft or wheel on an HX40? If so, what kind of boost was it showing when it snapped. I keep mine around 40 psi. One last question, if the HX40 is a bad turbo, what is a good budget turbo. I was looking at a S300 or S400, I just don't have any experience with them.

Thanks in advance,

Rob

 

[Joseph Donnelly]

I have blown four HX40s over the years. In no case did I run them over 40 psi boost. Generally, the shaft breaks and the wheel and shaft roto-rooter the down pipe and end up at the muffler, inside the exhaust pipe. I wouldn't use an HX40 in a performance application, period. Of the turbos I have used, I would lean toward the High Tech 66/71 with 14 cm2 exhaust housing. Exhaust gas temperatures will probably be high under full power, but spool up and general performance will be good and durability will be good.

 

[RShipp]

Thanks for the info. I only installed the HX40 because I got a REALLY good deal on it. Brand new for $267. 00. I was pushing the HE351 way past the efficiency point with 53 psi. I probably can't find one of those HTs for under $1000. 00 One other thing, I do have the Six vane compressor which is the 60mm compressor and the exhaust housing is 16 cm2. I still have the stock one just in case, but I'm thinking it will look good on my 4BT.