how can i find maps for this?

[burnin240sx]

I bought a turbo kit today and would like to look at the maps for this turbo.only problem is i con't figure out what it is exactly.

the compressor housing says a/f .50 and has M36 or M35( I think it's 35) on it.

the exaust just says garrett. it doesn't have any other markings

i do know it is a t3/t4 oil feed. but i don't know the trim or the turbine a/f or trim.

is there any way to find out?

[NateDogg]

take it apart and measure the turbine wheels. that will get you the a/r.

[hannibal]

Measuring the turbine wheel will tell you the trim. YOu can also measure the comp wheel to find its trim. Dont know how to find A/R.

Trim = minor^2 / major^2You'll get a number like 0.600... Thats a 60 trim.

[C-Kwik]

The A/R is the area of the nozzle divided by the radius of the center of the nozzle to the turbine wheel axis. Looking at the picture of the compressor side above, the nozzle is located right about where that rusted bolt looking thing is. However, the A/R on the compressor is stamped on the housing itself on this turbo. The turbine housing A/R is usually stamped or etched into the housing as well. You might find it on the flange.

[:: orion ::]

To find a compressor map, remove the compressor housing and measure the diameter of both ends of the wheel.

See this pic - Measure the top and the bottom

Using these measurements, you can determine which "trim" it is...

Here's a few examples:

http://cherrypicker.tripod.com/id1.html

Then see here for the map:

http://64.225.76.178/catalog/compmaps/fig4.html

- Brian

[burnin240sx]

I’ve noticed on some turbos that the wastgate actuator vacuum line is connected from the turbo to the wastrgate. but not on my turbo. Mine looks like a rusted bolt pluging the hole.

I’m sure this is nothing but what is the benefit of having the vacuum line setup like in this picture?

[burnin240sx]

i'm aving a hard time measuring the damn turbin wheel.

how do you measure the top cause it's hard since the fins ar not straigt across.

and the bottom is hard to meause cause the fins are in the way.

i tryed the whole c/pi=d but i got a 67 trim and i think i messed up.

[burnin240sx]

I tried using string and measuring the string and I still got a .67

I have 5.9mm and 9.1mm for measurements it comes out as .641 but my measurements may be off a little as I was eyeing the ruler.

Isn’t the biggest trim for this compressor a 60 trim?

[burnin240sx]

ok i' have a 6" dial caliper and i measured 59 mm and 92 mm on the compressor wheel top and bottom. Is this right?

With my calculations I'm getting a trim of .6413

so this is a 64 trim?

[Structure240sx]

seems like a nice sized turbo, so it very well could be

[burnin240sx]

i don't think that

Trim = minor^2 / major^2You'll get a number like 0.600... Thats a 60 trim.

is correct because when i try this formula using the numbers on this site

http://www.precisionturbo.net/...=3026

I get diffrent trims.

for example 450 SC-5031E 54mm 2.123" 3.000" 50 3" / 2" 360 Race .48 or .63 T31 2.559" 2.228"

2.123 / 3.000 = 70 yet the trim is 54mm not 70

on my compressor i measure on the top side 2.22 in and on the bottom side 3.61

2.32 / 3.61 = .642

Atleast I know that my measurements we damn close. but my measurements don't match up with any of the turbo spec on that site. this either means i'm measureing the wrong part or i have a unique turbo.

580 SC-6027E 60mm 2.320" 3.000" 60 3" / 2" 360 Race .48 or .63 T31 2.559" 2.121"

Note that this turbo matchs my meauserments except for the larger diamater is 3.00 in on the chart and mine is 3.61. I'm stumped

this is where i am measuring the compressor. Am i doing this wrong?

[hannibal]

Those ^2 mean 'squared'.

So your turbo's trim would be(59*59) / (92*92) = 3481 / 8464 = 0.411 => I'd say its a 40trim

I'm not exactly sure where youre supposed to measure. I think its the widest point and the narrowest point.

450 SC-5031E 54mm 2.123" 3.000" 50 3" / 2" 360 Race .48 or .63 T31 2.559" 2.228"

well 54mm = 2.123", and using the formula, the trim should be 50. so I guess that's what the 50 represents. the formula also works for turbine wheels. that precision turbo has a turbine trim of 76, which is known as a stage 3 wheel. I think 67 trim is a stage 1 wheel.