TVS900 Basics

[mini_racer]

Thinking more about boost, can the R900 efficiently get to the ~20psi range in a 1.8L stroker, or is the R1050 a better option?

[Jan]

Won't know till we spin the guts out of it

[mini_racer]

Sounds fair, only so much you can do on paper. Actual empirical measurements always rule.

[Penis]

Mine will probably never be able to see 20psi. With the 13~14psi they are seeing now, due to my altitude, I would only have around 9~10, then you need to figure the pressure drop of going to a front mount I/C on top of that.

Either way, it will be way better than the Shitex I wasted a couple grand on, have better performance than stock, and have the low end I am after.

Cant wait to see how far they will push this S/C with different pulley's!

Hey Dan, are you using the stock JCW intake box? Wonder how loud it would be with a setup like mine vented straight through the hood with an open filter?


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[dansskk]

(07-05-2013 11:02 PM)Canyon Factory Wrote:  Mine will probably never be able to see 20psi. With the 13~14psi they are seeing now, due to my altitude, I would only have around 9~10, then you need to figure the pressure drop of going to a front mount I/C on top of that.

Either way, it will be way better than the Shitex I wasted a couple grand on, have better performance than stock, and have the low end I am after.

Cant wait to see how far they will push this S/C with different pulley's!

Hey Dan, are you using the stock JCW intake box? Wonder how loud it would be with a setup like mine vented straight through the hood with an open filter?


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Dick,
The car in the video has a JCW intake but the forward tube is removed and the vacuum flapper is also removed . The exhaust is also stock JCW but the RMW headers and Cat wake it up and let it blow out the resonator.
The video pulls posted today were at an elevation of 4,000 ft. plus in a high canyon but I did not have a working boost gauge to watch. It still pulled hard up at higher RPM..........

[Penis]

No doubts about that. I'm at 6000 feet, and most of the canyons I like to run are from 11000 at the top down to around 8~9000 at the bottom. The stock S/C with a 16% pulley only spit out 3~5psi at 14000 feet, but would pull 16~18 down at sea level. It still felt quick either place, so I am really not worried about hitting any kind of boost record.

For having a stock exhaust, your car sounds great BTW!


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[Davisflyer]

So am I wrong in my thinking that even though it's only putting out a steady 14 psi, the actual volume of air is greater?

[Jan]

Yes
The car is leaking a small amount of boost down to 13 by end of the logs I did with Dan
Need to figure out where its leaking

[mini_racer]

That is a correct statement, with a fixed SC to engine rpm ratio and no new leaks, lower boost means more flow.

[Davisflyer]

More flow is great, because it's volume (and cooler air) that makes power!