Upgrading the turbo on the SR20DET

Post by **msaskin** » Mon Jul 05, 2004 4:48 am

The calculation to find "new" injector size based on higher pressure is as follows:

sqrt(new pressure/old pressure) * old flow rate = new flow rate

So, assuming 370cc injectors, running at 80psi instead of 40psi, you get:sqrt(80/40) = ~1.4141.414 * 370 = 523.xxx

So, your 370cc injectors are effectively 520cc injectors at 80psi.

~matt

Post by **Phax** » Mon Jul 05, 2004 4:48 am

NY S13 SR wrote:Stock injectors / MAF / ECU making 340rwhp? How's that done?

___________________Jeff Holdenhttp://www.heavythrottle.com

I won't believe it until I see a couple of dyno charts, dated a few months apart.

Post by **S13 King** » Mon Jul 05, 2004 4:48 am

wow, this was some great insight guys. However, I've settled on the CTC kit for the SR20DET. However thanks for your suggestions, and insight.

Post by **240sxDreamer** » Mon Jul 05, 2004 4:48 am

dang 400 hp...a lot of power to be used "reliably". I have the gt2540r dual ball bearing turbo .86 A/R , haven't dynoed my car yet...

what do u guys think of a 300 hp daily driver. Would it be reliable? prolly 250 changing the boost a bit and upping it whenever i need to. Sounds perfect for the streets lol

I don't need.. 400 horsies...

:-/

Post by **pampadori** » Mon Jul 05, 2004 4:48 am

i think 350whp can be very reliable for a few years. more maintainence would be required as with any modded car. Shaun

Post by **msaskin** » Mon Jul 05, 2004 4:48 am

240sxDreamer wrote:dang 400 hp...a lot of power to be used "reliably". I have the gt2540r dual ball bearing turbo .86 A/R , haven't dynoed my car yet...

what do u guys think of a 300 hp daily driver. Would it be reliable? prolly 250 changing the boost a bit and upping it whenever i need to. Sounds perfect for the streets lol

No offense, but if you only wanted a 300hp daily driver the GT2540 was a really bad choice in turbos.

You can make that 300rwhp very reliably with a T28 and have amazing spool. Using a GT25 to only make 300hp is like having a built head to rev to 9000rpm and never going higher than 5000rpm.

~matt

Post by **IveBeenBad** » Mon Jul 05, 2004 4:48 am

pampadori wrote:i think 350whp can be very reliable for a few years. more maintainence would be required as with any modded car. Shaun

bart and i made it home safely with jays SR... even with all those retarded truck drivers on 81!

Upgrading the turbo on the SR20DET

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