FI-98X....question
09-21-2011, 04:08 PM
#25
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Compression will also have an impact on spoolup. A 10:1 408 will spool the same turbo faster than a 8.5:1 408...Just another variable to think about
Take fireball's advice. Either build the motor around a certain turbo or buy the turbo to best suit the engine
Take fireball's advice. Either build the motor around a certain turbo or buy the turbo to best suit the engine
09-21-2011, 05:53 PM
#28
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1300 hp in a car that will be strictly a street car is plain retarded. On the other hand....contact a sponsor and tell them what motor your building and have them suggest the best turbo to match...
09-21-2011, 06:39 PM
#29
Everyone told me 10 years ago I was nuts for wanting a 500 RWHP car.....and that turned out to be boring after 2 months. I've been in a couple cars with over 1,000 RWHP, they are totally driveable and quite fun.
Tons of 1,000+ RWHP cars around here, driven every day and they have a ball with them.
Just takes money..........
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09-21-2011, 07:13 PM
#31
In your case I would build the biggest engine that your builder can make reliable at that power level. unless you are restricted by a class that dictates max turbo size then the bigger engine is almost always better assuming that you pick the right parts. a 408-422 is less than a 4% difference. A 434 would also be a good choice. at those cubes a s500 based unit should spool just fine when loaded. call Jose double check that what ever compressor you choose will flow enough at the estimated pressure ratio you will likely see. (base this on the NA horsepower you will be making) They have lots of flow data on the turbines that is not released, they can help you pick the proper A/R
09-21-2011, 08:05 PM
#32
In your case I would build the biggest engine that your builder can make reliable at that power level. unless you are restricted by a class that dictates max turbo size then the bigger engine is almost always better assuming that you pick the right parts. a 408-422 is less than a 4% difference. A 434 would also be a good choice. at those cubes a s500 based unit should spool just fine when loaded. call Jose double check that what ever compressor you choose will flow enough at the estimated pressure ratio you will likely see. (base this on the NA horsepower you will be making) They have lots of flow data on the turbines that is not released, they can help you pick the proper A/R
These are things I'm looking into.........
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09-21-2011, 10:07 PM
#35
lol there is a reason frasier inbox is full, he has been putting out some nice packages from 370 to 410 lately.
I think the 410 is your compromise on spool and having the capability to turn it up down the road. One day there might be a big bad turbo busa you just have to crank the boost controller up to 25 to beat and if your close or at the airflow limits of your turbo that aint gonna happen.
I think the 410 is your compromise on spool and having the capability to turn it up down the road. One day there might be a big bad turbo busa you just have to crank the boost controller up to 25 to beat and if your close or at the airflow limits of your turbo that aint gonna happen.
09-21-2011, 10:28 PM
#36
lol there is a reason frasier inbox is full, he has been putting out some nice packages from 370 to 410 lately.
I think the 410 is your compromise on spool and having the capability to turn it up down the road. One day there might be a big bad turbo busa you just have to crank the boost controller up to 25 to beat and if your close or at the airflow limits of your turbo that aint gonna happen.
I think the 410 is your compromise on spool and having the capability to turn it up down the road. One day there might be a big bad turbo busa you just have to crank the boost controller up to 25 to beat and if your close or at the airflow limits of your turbo that aint gonna happen.
Whatever will fit with a single kit and retain A/C....I'll use it.
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09-21-2011, 10:35 PM
#37
I've been reading about heads.....tons of them to choose from...........obviously gonna use a 6 bolt head. I know I don't need to concern myself with the best flow rates with FI......
Is there a favorite that people have good results with at the power levels I'm looking at making???
Was thinking about using the relatively cheap Hogan sheet metal intake.
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Is there a favorite that people have good results with at the power levels I'm looking at making???
Was thinking about using the relatively cheap Hogan sheet metal intake.
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