Turbo Maps for Chris...

[theduckylittle]

Okay, I just couldn't but help look at what would work for a 3L running a few different situations...

T61 -- Run 14 lbs of boost... 300 horsepower.... mmmmmmm....
http://64.225.76.178/catalog/compmaps/t61.gif

60-1 Wheel ... run 10-12 lbs of boost. :D
http://64.225.76.178/catalog/compmaps/Fig9.gif

Those would be frickin' awesome for 300-350 horsepower.

-Duck

[Blackcoog]

I guess I don't know enough about the maps yet. I have glanced at them before but I don't know whats good or bad on the map. Whats an easy way to look at it?

[theduckylittle]

Originally posted by Blackcoog
I guess I don't know enough about the maps yet. I have glanced at them before but I don't know whats good or bad on the map. Whats an easy way to look at it?

Consider the "lbs of air" horsepower divided by 10.

10 lbs of air = 100 horsepower

And the pressure ratios are on the side... it's the pressure ratio of manifold pressure to atmospheric pressure...

To get a "rough" boost level take the ratio on the side, subract 1, and multiply by 15.

-Duck

[Blackcoog]

So to get 300hp with that second map I would need to run about 13psi?

That T3/T4 has a .82 trim on the exhaust. What would that map look like?

[theduckylittle]

Originally posted by Blackcoog
So to get 300hp with that second map I would need to run about 13psi?

That T3/T4 has a .82 trim on the exhaust. What would that map look like?

You are correct.

Exhaust wheel won't change the map. The .82 sounds about right for a higher RPM spool (assuming the wheel is decent) something in the range of 3500-4000.

The compressor side is infinitely more important. The unforunate part with the T-61 series turbos is that you can't run T3-4 stuff on them. And they are spendier. However, if you want "room to grow" I think it's a better option. The T3/T4 will be outta snoot for higher-power levels.

.50 trim t3/t4...
http://64.225.76.178/catalog/compmaps/Fig13.gif

[Blackcoog]

Found it! The T3/4 that this company has gave these stats: - .48AR and .57 trim

[DNeinstadt]

I'm just putting together my Magic:The gathering cards and my 20-sided die and my magic eight ball, guys. I'll chip in in a second. :)

Rock on with your Uber-Turbo-geek selves.

Dan

[theduckylittle]

http://64.225.76.178/catalog/compmaps/Fig15.gif

You need to run about 21 psi to get 350 horsepower.

-Duck

[Blackcoog]

Somethings wrong there because guys on that contour site are hitting 325fwhp on low amounts (15psi) of boost? What are we missing? It looks like the map is different than what we are seeing here.

[theduckylittle]

Originally posted by Blackcoog
Somethings wrong there because guys on that contour site are hitting 325fwhp on low amounts (15psi) of boost? Whats not right?

With a 57 Trim?

-Duck

[Blackcoog]

See below:

http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=dynodrag&Number=547681&page=&view=&sb=5&o=&fpart=all&vc=1

Do you know how to weld duck? Think you could help me make a turbo system based of pictures of the AZ dyno one I've been showing you pictures of? This guy did it for cheap and bought the components he didn't fab from AZ dyno.

[theduckylittle]

It's in the intercooler, it increases the efficiency.

Maps tell you more about pressure ratios and how good of a "pump" a particular wheel is more than it does about horsepower... the interpretation I gave earlier is very "rough"

-Duck

[Blackcoog]

Well if an intercooler was hooked to the other turbos you were suggesting would it push it out of the optimum operating range or just allow you to get more power since the intake charge would be cooler. I know most of the new turbos don't have lag with the ball bearing designs but would lag be an issue with the turbos you were suggesting?

Keep in mind this is a front wheel drive car so 300fwhp is already more than the car can handle so a turbo that can go to 600fwhp isn't needed. 400fwhp would be a max and I'd probably never go that high even though there are two people running 400fwhp now with a 3L setup like mine and a turbo.

[theduckylittle]

Originally posted by Blackcoog
Well if an intercooler was hooked to the other turbos you were suggesting would it push it out of the optimum operating range or just allow you to get more power since the intake charge would be cooler. I know most of the new turbos don't have lag with the ball bearing designs but would lag be an issue with the turbos you were suggesting?

Keep in mind this is a front wheel drive car so 300fwhp is already more than the car can handle so a turbo that can go to 600fwhp isn't needed. 400fwhp would be a max and I'd probably never go that high even though there are two people running 400fwhp now with a 3L setup like mine and a turbo.

You get more power from the cooled charge. You could still push it out of its optimum efficiency range.

Re: Ball Bearings -- they help, yes, but are not really worth the extra bling if you're trying to keep a budget.

Re: Horsepower Goals. If you're going to be dropping bank, there's not a large difference between a T3/T4 and a 60-1/T3... about $100. And the horsepower potential of the 60-1 wheel far surpasses that of the T3/T4, along with wayyy higher efficiency into the high-psi's. Fatter island, and it supports 9-11 psi of boost VERY FRIENDLY it looks like. You're not out of the efficency range. The .57 is a very old wheel design, the .50 is a bit newer and has a wider efficiency range. Though, really, that 60-1/T3 with an engine that can spool it looks like a lotta phun... ;)

-Duck


A 57-trim will work, but there are better wheels out there IMO.

[stangerjon]

Originally posted by theduckylittle
Consider the "lbs of air" horsepower divided by 10.

10 lbs of air = 100 horsepower

And the pressure ratios are on the side... it's the pressure ratio of manifold pressure to atmospheric pressure...

To get a "rough" boost level take the ratio on the side, subract 1, and multiply by 15.

-Duck

thanks Duxor. I can now read compressor maps.:grin:

[Blackcoog]

Hey Duck check out this kit: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7930863638&fromMakeTrack=true

I think there is only one header pictured. If I remember correctly I thought this kit was suppose to bolt up to the stock header on the other end. I think I'm kind of confused on where everything goes to.

[mustangmatt]

Originally posted by stangerjon
thanks Duxor. I can now read compressor maps.:grin:

word!