Compressor Maps: The Basics - Page 2 - Team Integra Forums - Team Integra
 
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post #15 of 22 (permalink) Old 10-05-2009, 01:54 PM
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Yes, I probably should have used IATs instead of just saying in side the engine bay. But that is what is supposed to be measured. And Garrett has actually given a generalization for that variable for your typical setup.

If your going to build a setup, then why not build it to accomodate the type of driving that your going to be doing 80% of the time? Horse power is expensive. If your unsure about your goal, just come up with a budget for how much you want to spend.
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post #16 of 22 (permalink) Old 10-05-2009, 03:02 PM
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Originally Posted by NtegraDryvr on Oct/04/09
Good point I'm not sure what to put in then really. I will be running water/meth and thats a whole other issue to calculate for I'm sure. Right now on my JRSC my IAT's AFTER blower I've seen reach as high as 188F.
Wow thats hot. A good reason why superchargers dont belong on 4 Cylinders without intercooling.

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post #17 of 22 (permalink) Old 12-22-2011, 10:44 PM
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Sup guys? Old thread but great info. Would be nice if someone could re-host the pictures.

Anyhow, hum... I've been looking at the GT3251B turbo. I can't find the exact map, however TheShodan from HT told me to use the GT32 map, it should be similar...

I think this is a bit too big for a bone stock b18b? The GT32 is using 71mm trim, the GT3251 would be 51mm... so i am guessing the entire map should shift LEFT a little bit right?




As of now, it looks like i would surge? Plus, i don't think i should be pushing all the way to 10-15psi either? (but that's what needed to push the turbo to its efficiency island). Am i plotting this right? I'd like some more input on this.

BTW, I think i need to use the T04B compressor housing, otherwise it won't clear my block with the spooling performance log style manifold.

[b]- WTB G2 hood cable, G3 billet ps, alt, & ac pulley - My running log - My FS thread: NGK, Hub ring, G2 Neuspeed 4pts, etc.

Last edited by codenamezero; 12-22-2011 at 10:47 PM.
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post #18 of 22 (permalink) Old 12-23-2011, 08:32 AM
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Originally Posted by codenamezero View Post
I think this is a bit too big for a bone stock b18b?
Yeah it is too big in my opinion.

edit, *actually, post coffee this morning, that turbo wouldn't be too bad.

You wont surge, you'll be coming onto boost in that area of the map. It will ramp up from 0. I can damn well guarantee you wont be making 10lbs of boost at 3k rpm. You'll start building boost around there and be full boost by 4.5~5k rpm, so your points there on your plotted map wont be flat with the others, they will be plotted lower on the pressure ratio scale. You'll be inside the suge line.


I will say there are probably better options. Plot your LS on a 50 trim or 54 trim T04E.

Last edited by MeltMan; 12-23-2011 at 11:37 AM.
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post #19 of 22 (permalink) Old 12-23-2011, 11:53 AM
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Here's some rough stuff for ya based on this calculator Ray Hall Turbocharging

LS, 10lbs T04E 50 trim


LS, 10lbs T04E 54 trim


LS, 15lbs T04E 50 trim


LS, 15lbs T04E 54 trim



And my car for example on the turbo I'm on at my boost level. (this same turbo is a horrible fit for an LS but not bad on a GSR)
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post #20 of 22 (permalink) Old 12-23-2011, 11:57 AM
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Or here's a 57 trim T04E at 10.


Same at 15
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post #21 of 22 (permalink) Old 12-23-2011, 01:54 PM
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The one that TheShodan is trying to sell me is 51mm trim though, would that effectively shift the "island" to the left side? The compressor map of the GT32 is 71mm.

ps: dude that TurboFast app is such a hack, i wish you've told me earlier lol
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post #22 of 22 (permalink) Old 01-19-2012, 09:08 AM
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How did you get a VE of .98? Shouldn't the compressor efficiency change from island to island?

Where are you going to be driving this car 80% of the time?
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