2003-2005 3.0L Turbo setup

[willsull80]

Ok I've been doing a lot of reading and adding 1+1=3 math and have come to the conclusion on what turbo best fits the 2003-2005 3.0L V6

I've spent hours and hours on this looking through dozens of websites and working formulas and reworking air flow corrections so I would like some others out there to look at what I have and tell me if you agree or disagree with what I have found.

The GT3071R turbo seems to be the best fit for this car at 7psi,
(I picked 7psi because it is safe for daily driving on a stock v6)

and here is why I think this is the case.

CFM = (L X RPM X VE X PR) / 5660

L = dispacement in liters

RPM = (I picked 3000 4000 5000 6000 7000 because of the area I want to build boost in)

VE = the best I can figure from every caculation ive done is around 85.31%

PR = more or less 7psi + 14.7 / 13.7 (the 13.7 is 1psi vaccum on the suction side of the turbo) doing all of this I come up with an effective PR of 1.58... keep reading below

This is where the tricky stuff happens just because you make 7psi at the turbo doesnt mean you have 7psi at the intake so in this case you have to make a little more boost at the turbo to make up for the loss in the pipeing and in the intercooler so remeber there is some play in this calculation...


CFM = 2.967 x 7000 x 85.31 x 1.58 = 2799449.3562 / 5660 = 494.6 CFM

now this has to be corrected for tempreture and conditions...

This is what kicks you in the face when your looking for puff the magic turbo....

anyway we have to turn CFM into lb/m of air well you take 494.6 / 14.27 = 34.66lb/m of air flowing from the turbo...


Well if you look at compressor map on the GT3071R you can see that it fits in the map very nicely

http://www.theboombopshop.com/v/vspfiles/photos/ATP-SUB-001-9.gif

But that is without correction for conditions...... so like I said this is all just my opion of a good turbo for the 3.0L motor on a lincoln...

as for the fuel and MAF cobra 32lb injectors will work and a 90mm SCT mass air flow BA2400 will work as well...

I have more info on remaping the ECU and things like that but either way i'll list all the sites I took information from to come to the conclusion of the
GT3071R by the way I would go with a .64 A/R to keep the turbo from lagging

http://www.turbobygarrett.com/turbobygarrett/tech_center/tech_center.html

http://www.lovehorsepower.com/MR2_Docs/compressor_flow_maps.htm

http://www.turbofast.com.au/freesoftware.html

http://www.turbofast.com.au/javacalc.html

http://www.moddedmustangs.com/forums/power-adders/628-turbo-size-r-trim.html

http://www.gnttype.org/techarea/turbo/turboflow.html

Hope this information helps someone else out that is out looking to put a turbo on their LS

Please let me know if you think my stuff is way off or is right for this motor...

Thanks, Will

 

[willsull80]

http://www.maperformance.com/garrett-gt3071r-turbocharger-310-475-hp.html


http://cgi.ebay.com/ebaymotors/BOSCH-Ford-Cobra-39lb-Blue-Giant-Fuel-Injectors-NEW_W0QQcmdZViewItemQQhashZitem51907969e2QQitemZ350316227042QQptZRaceQ5fCarQ5fParts

http://www.americanmuscle.com/sct-ba-2600-maf.html?utm_content=sct-ba-2600-maf&utm_campaign=FROOG&utm_source=Google&utm_medium=Shopping


these will be the 3 main parts to making your turbo system work... Hope this helps push you in the right direction

 

[Quik LS]

Will - do you have previous experience adding turbos to NA cars?

 

[willsull80]

Not so much myself I have about 15 buddies I run around with that deal with Ricers Chevys and fords but no one with a lincoln... Im just taking ideas from them and a guy who just deals with Mustangs and Fords. Most of what Ive learned has been reading and reseraching on diffrent sites.

Is there something that ive messed up on? Just trying to put everything into one bundle when I go for this project.

As for mounting and intercoolers I have all that worked out as well just want to know im going for the right turbo. All the guys im around says that the GT3071R is the best for the low boost at 7000 and like I said its hard to get all of the info right without running a logger while I go down the road to see what the true VE is on the car as well as knowing the true CR of the Turbo to get the PR to complete the formula. Most of it is just a guess and the 3071 has a nice fat bottom end for the boost Im looking for.

any info on this matter would be awesome. Im looking to spend 4000 or so on this and i just want to do it right and not get a turbo that flat lines at 5000 or lags like grandmaws 85 model K car