Biglady's Holset HX-52 Completed Install Pictures

[Zack Huffman]

He used a divided runner manifold. Isolating blowdown from other open exhaust valves with ending exhaust pulses FTW.

Though full boost at 6500rpms with a 1.6L and a huge nondivided hotside is actually pretty good, Steve doesn't need to worry about spool considering his use. Big flow and big topend is all that really matters for his goal.

Right on. I agree that 6500 is good on a 1.6L for a turbo anywhere in the neighborhood of that size, and especially on a non-divided setup. I guess I'd just not really heard a definitive spool rpm for a divided setup with a HX-52, and it just seems quite incredible that you could spool a turbo well before 4500 on a 2L and still have enough airflow available for 700+whp without a sophisticated VGT system.

These Holset and BW turbos continue to impress me every time I read something new about them.

 

[dsm-onster]

Take one for a spin. THEN you'll be really impressed. Imagine that early boost with much more VE. Not only do you have fast spool, but the aero tech there that still maintains high flow through the turbine wheel. It takes slow moving, cold, bumbling, thick diesel exhaust gases to cause a company to look for better ways to increase turbine wheel efficiency.

 

[biglady112]

My car runs a stock unmodified Revhard manifold and stock unmodified divided 18cm housing.

The intercooler is from siliconeintakes.com

 

[No_Skillz]

So when you're holding a marinated turkey leg out the window, how long does it take to roast at WOT?

 

[Slippi84]

My car runs a stock unmodified Revhard manifold and stock unmodified divided 18cm housing.

The intercooler is from siliconeintakes.com

16cm or 18cm? EVeryone I have seen that had a hx52 had a t4 divided 16cm housing.

 

[biglady112]

It might be. It is bolted up to the car now so I can't tell. The numbers are on the inside of each inlet of the housing.