Turbo

Silva22

New member
I am looking to buy a bigger turbo before summer get here, do you guys have any suggestions on what i sould get? everything is stock just looking for a little more power.
 

Throws

Active member
Re: Turbo

I am looking to buy a bigger turbo before summer get here, do you guys have any suggestions on what i sould get? everything is stock just looking for a little more power.

You can go pretty far on a stock turbo... 18-20psi isn't unheard of.

-P
 

teamvortec

New member
Re: Turbo

I run 18psi on my stock and have run it up to 21psi. Made a world of difference at 18 and unbelievable at 21 just had too much knock retard so I put it back to 18 until I get my tune straight and the meth kit on.

Ps you haven't done a brake boost until you do a 15lb one wow that will sure put a big ole grin on your face.
 

gkrcr882

SyTyless......for now!
Re: Turbo

A good tune up and a 3 bar tune will net you good gains before turbo swaps become necessary.
 

killa66cam

RIDIN DIRTY
Re: Turbo

Listen, and do what the others have posted. But the next, gradual step up from the stock turbo is a 20g. They can be a pain to find though. Keep looking, and waiting...they do turn up.

Cam
 
Re: Turbo

Have a plan for tuning before you make any changes. You will be disapointed with it unless you tune. Get a hold of some one or pay some one if you cant do it yourself.

My advice to you. If I could go back. Keep everything stock. Get some big injectors, fuel pump and change out your stock lines to alcohol rated. Get someone that knows how to tune these truck on E85 and you will be very happy. You are also maintaining the stock form of your truck and it will be worth more in the end because you didnt mod the crap out of it. You will also be free of detonation that these trucks flirt with so much. This is only my opinion.
 

killa66cam

RIDIN DIRTY
Re: Turbo

Have a plan for tuning before you make any changes. You will be disapointed with it unless you tune. Get a hold of some one or pay some one if you cant do it yourself.

My advice to you. If I could go back. Keep everything stock. Get some big injectors, fuel pump and change out your stock lines to alcohol rated. Get someone that knows how to tune these truck on E85 and you will be very happy. You are also maintaining the stock form of your truck and it will be worth more in the end because you didnt mod the crap out of it. You will also be free of detonation that these trucks flirt with so much. This is only my opinion.

What size injectors? I am wanting to do a few other additions than just stock. Looking at a 20g14cm2, L35's, and a 9/11 convertor with a 2800 stall. It can all be put back to stock though.

Cam
 

0966Sy

Code what?
I wouldn't run a 2800 tc on the 20g14cm, you will go slower. My truck has that turbo with l35's and 50's. The turbo spools at 2100 super fast, no need to waste valuable torque at lower rpm.
 

Syclone22

Member
Re: Turbo

If your interested i have a ATR strip chip with injectors
combo this will give you a good performance on a
stock set up ..
 
Re: Turbo

What size injectors? I am wanting to do a few other additions than just stock. Looking at a 20g14cm2, L35's, and a 9/11 convertor with a 2800 stall. It can all be put back to stock though.

Cam

Depends on what fuel you are running. If E85 I recomend 80# injectors. With pump gas I recomend 60# injectors (they should be high impedance injectors). Im not the expert but these should be good injector sizes for what you need.
Note: Have a tuning plan. Im just speaking from my experince. Dont think you are just going to learn how to tune a 500hp engine on your first try. It takes lots of time and patients. Nothing you bolt on matters if your tune sucks. Period!
 

killa66cam

RIDIN DIRTY
Re: Turbo

I wouldn't run a 2800 tc on the 20g14cm, you will go slower. My truck has that turbo with l35's and 50's. The turbo spools at 2100 super fast, no need to waste valuable torque at lower rpm.

This basically goes against everything that I have seen on this forum for the past 2 years. I will definitely start with the stock stall convertor, but everything I have read on here has said you need a 2800 stall with the 20g14cm2.

Depends on what fuel you are running. If E85 I recomend 80# injectors. With pump gas I recomend 60# injectors (they should be high impedance injectors). Im not the expert but these should be good injector sizes for what you need.
Note: Have a tuning plan. Im just speaking from my experince. Dont think you are just going to learn how to tune a 500hp engine on your first try. It takes lots of time and patients. Nothing you bolt on matters if your tune sucks. Period!

I don't have any intentions of using E85 anytime soon, if ever...too hard to find around me. I am planning to start with a stock Ultimate chip, and then go to a 50# Ultimate. I have the stuff to go code59...but I know nothing of tuning really, so I am scared to do it myself. I may end up going to a VeloSYTY chip after the Ultimates.

Cam
 

0966Sy

Code what?
Depends also on what kind of waste gate setup your using, your stall speed should always match the peak torque output rpm of your engine
 

killa66cam

RIDIN DIRTY
Re: Turbo

Depends also on what kind of waste gate setup your using, your stall speed should always match the peak torque output rpm of your engine

The key to 0966Sy making this work is the Forge wastegate.

http://www.syty.net/forums/showthread.php?t=78765&highlight=forge

So the 2800 stall 9/11 convertor that I just bought is unnecessary then?!? Good to know! I remember reading about the Forge wastegate before. I will have to go through that thread again to refresh myself.

Cam
 

It's just a six

Super Member
Re: Turbo

I wouldn't run a 2800 tc on the 20g14cm, you will go slower. My truck has that turbo with l35's and 50's. The turbo spools at 2100 super fast, no need to waste valuable torque at lower rpm.

The only way I heard of running a 2800 stall converter & running slower is because they were blowing the tires off on the launch (less traction)

What like to see a datalog of your run w/a 2100 stall torque converter.

Curious,,, What does your truck run 0-60 ft, 0-60 mph 1/8 & 1/4 mile times?

I used to think my stock torque converter just stalled to 2100 when it actually brake stalls to 3025 rpm, only way I could see this was by datalogging & playing it back in super slow play.

BTW, I run a 12 CM housing & I know a 14 CM housing will be slower spooling.
 

Storm Warning

New member
Re: Turbo

I run bowl-ported L35s, 20G/14cm, 60s and a 2800 stall and I too am curious as to how you can super-spool a 14cm exh with the stock converter. With the 2800 stall the 20G hits like a slug to the chest, I don't see how you can get that same kind of instant RPM/spool with the stock converter and this big of an exh housing, but I'm up to learn new things.
 

0966Sy

Code what?
I cut 1.75/1.80 60ft's on an atr chip stock injectors. Typically launch at 8psi building boost on the brake at 2200rpm. It's going to depend on your waste gate also to how your turbo is spooling. If have a factory gate it could begin to creep open before it needs to causing a slower spool. It's also how the duty cycle of the solenoid Is programmed in the tune. I've never used the stock
Solenoid to control boost, always spring pressure from the waste gate such as a pte setup.

You have to remember when you change your stall speed that your changing the power curve in your rpm range based on what stall you choose.

Of course a 2800 is going to hit hard on any turbo because your spooling it at a higher rpm. On the street I don't like that laggy feel of the 2800 with a punch of boost like you describe. Leaving on a launch closest to your engine peak torque rpm is going to get the best results as I've learned
 

It's just a six

Super Member
Re: Turbo

Ok, how about your 1/8 ,1/4 mile times, MPH, got those, have you data logged your runs @ all?

Lets see some video of how this 20G turbo spools instantly w/a 14 cm housing & a stock torque converter.

I am sure most members here would like to see it also.

Anyone???
 

killa66cam

RIDIN DIRTY
Re: Turbo

I wouldn't mind seeing something. Just wanting to know if I am really better off using the stock convertor over the 2800 stall, with a Forge wastegate? What if I ran both...the Forge wastegate, and a 2800 stall?

Cam
 
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