Jackson Racing C38 vs C30 with stock pulleys

[gtengr]

Originally Posted by Firecruiser

With different scales on a axis a visual comparison is not possible. I'm not sure how to make use of the graphs though so maybe it doesn't matter but for someone just glancing at them to compare they look fairly identical when there are significant differences between them.

The difference in scales isn't relevant imo. Essentially, the way to use those graphs is to estimate your horsepower at X psi, and see how the pressure ratio lines up with the efficiency of the blower. In my examples, I assumed a flywheel horsepower of ~320 hp (I used an Ace header in my analysis), and then making some more estimates I assumed the FA20 is flowing between 28-30 lb/hr of air at 7000 rpm to make ~320 boosted hp on the X-axis. Using boost logs, I then estimated the pressure ratio on the Y-axis, and plotted them to see where they fall on the efficiency curves of each blower. It's not an exact science by any means, but that's the process.

[HaXx]

C30 with high boost pulley, injectors/feul pump, full exhaust sound like a good setup?
I have the c30 with a catback. Everything else oem.
I'm thinking about adding the hbp/injectors/pump and heads/overpipe/frontpipe. I'm wondering if I can leave it at that or if other supporting mods have to be done

[mrg666]

Originally Posted by HaXx

C30 with high boost pulley, injectors/feul pump, full exhaust sound like a good setup?
I have the c30 with a catback. Everything else oem.
I'm thinking about adding the hbp/injectors/pump and heads/overpipe/frontpipe. I'm wondering if I can leave it at that or if other supporting mods have to be done

Have you seen the post #8 in this thread? I wouldn't use HBP without at least upgrading the connecting rods and bearings.

[HaXx]

Originally Posted by mrg666

Have you seen the post #8 in this thread? I wouldn't use HBP without at least upgrading the connecting rods and bearings.

That what u did when u went hbp?

[mrg666]

Originally Posted by HaXx

That what u did when u went hbp?

I still have the stock pulley with CARB tune.