JusMX141
Moderator
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- Dec 13, 2005
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Greensburg,
Pennsylvania
Max torque = TD05H turbineSo if we are brainstorming on how to max out a 20g compressor, what do you guys think the best combo would be?
Max horsepower = TD06H turbine
A TD05H turbine is a little on the small side for max power output on a 20G due to the backpressure but it's great for torque because of the quick response and how the power comes on hard before 5252rpms where torque and HP plots on the graph cross.
For max horsepower with the TD06H turbine, the turbine housing choice doesn't really matter. Consider the fact that the older FP Red made big airflow numbers with a clipped TD06H turbine in a 7cm turbine housing, so obviously a TD06H turbine should handle everything that a 20G compressor can throw at it. In fact, a ported 6cm housing machined to accept a TD06H turbine could be the hot ticket for a 20G compressor concerning both spool and airflow if you're lucky enough to find one that isn't all cracked to shit.
Some interesting info pertaining to this topic which was exchanged via PM between Kevin Jewer and myself around a year ago while discussing max power extraction from certain turbos:
So there's some hard evidence that a 20G compressor on a TD06H turbine can be pushed beyond the published compressor map, which is the key to making big HP numbers.95GSXracer said:I have to admit the TD06H 20g was one of my all time favorite turbos. It is a great turbo for a street strip car. With the 6H wheel I would run 25 psi all day long on pump gas, and then at the track I'd crank up the boost (or pull the vac line off the WGA, ) and get 48 lb/min across the whole run on race gas. Those were the days...
However, keep in mind that the TD06H 20G may not reach full boost until 4000-4200 rpms, and in this day and age we're fortunate enough to have bolt-on turbos that can outflow a 20G compressor while spooling in the same rpm range or perhaps even quicker. The above discussion pertains to maxing out the 20G compressor without regard to spool.