Question for the turbo gurus out there

**4seasons69** · 10-26-2012

My turbo is going to cost more to fix than I would like to spend on a used turbo. I can get a brand new center section for about 950 or map has gt4294 listed on their site for like 1200.
Since the its already getting spendy should I look into going to a gt4202 or should I run the risk chipped exhaust wheel until I can get a billet version of the 4294 or 4202? I would also be willing to go away from the gt42 style turbos for the right one.

Basically I'm looking for your thoughts or opinions on what a good turbo would be that can support upwards of let's say 800 to1000 hp at the wheels at map?

(I have spent lots and lots of time doing research on turbos the last couple months and my brain is on over load right now. Just need a little help. Thanks!)

**Shane@DBPerformance** · 10-26-2012

I have a slightly used GTX4202 with Tial V-Band housing on it for sale. They are an crazy expensive turbo though.

**4seasons69** · 10-26-2012

Quote:

Originally Posted by Shane@DBPerformance

I have a slightly used GTX4202 with Tial V-Band housing on it for sale. They are an crazy expensive turbo though.

Ha yeah I know they go for like3k new. If I go the gtx route it probably won't be until spring because the engine rebuild is already quite spendy lol. but pm what you want for it ill definitely keep it in mind

turbotalon1g · 10-26-2012

I say get a small turbo first and see what you break.

6266 will only do 860 as vassil has shown, but probably won't wow people with the hood up.

**4seasons69** · 10-26-2012

Quote:

Originally Posted by turbotalon1g

I say get a small turbo first and see what you break.

6266 will only do 860 as vassil has shown, but probably won't wow people with the hood up.

Ahhh yea only 860 lol. Isn't he on e98 though? I want to stick with E85 for now. The car is setup for a gt42. It made 760ish at map on a 4294. but if the turbo is the right price I don't mind having to change the intake and exhaust. Honestly i dont care as much about wowing people under the hood. I care more about the performance and power.

**4seasons69** · 10-26-2012

Basically if I can go to a little smaller turbo pick up some spool make as much or more power on E85 and get the turbo, intake, and exhaust for around 2kish I'd seriously consider it. If I'm looking at more than 2k ill prob go ball bearing gt42 or go gtx

EclipseGST · 10-26-2012

What about a billet 6766?

**Halon** · 10-26-2012

It's sounds like you want to keep cost to a minimum. So I'd say if everything is already setup to mate up perfectly to a GT42, then just stick with that platform for now for simplicity sake so it's just a bolt up affair without having to tweak piping and what-not. Little tweaks here and there can add up cost wise.

Without knowing what your current turbo is, or what exactly is wrong with it (you mentioned buying a center section, then mention a chipped wheel, what all is wrong with it?), it's hard to say what's the best path to go as far as repairing or buying new.

niterydr · 10-26-2012

What is your current turbo and what is broken on it?

GT4202 is pretty old school technology.

**Shane@DBPerformance** · 10-26-2012

Don't expect big gains going from one large turbo to another large turbo in roughly the same size range unless the old turbo was maxed out and dropping boost/airflow a lot or you crank up the boost, which will probably take better gas. Especially if you retain the same size exhaust wheel and exhaust housing.

**4seasons69** · 10-26-2012

Quote:

Originally Posted by EclipseGST

What about a billet 6766?

That is something that has crossed my mind.

Quote:

Originally Posted by Halon

It's sounds like you want to keep cost to a minimum. So I'd say if everything is already setup to mate up perfectly to a GT42, then just stick with that platform for now for simplicity sake so it's just a bolt up affair without having to tweak piping and what-not. Little tweaks here and there can add up cost wise.

Without knowing what your current turbo is, or what exactly is wrong with it (you mentioned buying a center section, then mention a chipped wheel, what all is wrong with it?), it's hard to say what's the best path to go as far as repairing or buying new.

Quote:

Originally Posted by niterydr

What is your current turbo and what is broken on it?

GT4202 is pretty old school technology.

Sorry I thought I mentioned what turbo I have. I have a gt4294 currently that the turbine wheel is chipped up from metal going through my exhaust from when the engine failed.

I do want to keep things as simple and cost effective as possible but want to do things right too. My intake is just a straight tube of metal pretty simple to fab up and the exhaust is basically just a dump pipe that goes down by the oil pan also shouldn't cost too much to have something similar made.

So if switching to something like a billet 6766 would net me more power in the long run I would be willing to have an intake and exhaust made.

Also I was thinking if I don't get a new center section I would go to a billet version of the 4294 or maybe the billet 4202 but I don't want to spend 3k on just a turbo. So if I can switch the setup and make as much or more power and still save a little money I'd like to lol

Quote:

Originally Posted by Shane@DBPerformance

Don't expect big gains going from one large turbo to another large turbo in roughly the same size range unless the old turbo was maxed out and dropping boost/airflow a lot or you crank up the boost, which will probably take better gas. Especially if you retain the same size exhaust wheel and exhaust housing.

Ok that's good to know. I honestly have no idea if the turbo was maxed out or even close to it. As for cranking up the boost the wastegate setup with the 4294 runs about about 37 psi no matter what so idk how much higher we can push it. As for better fuel I'd like to stick to E85 for now but I can get a decent price on e98 though my work so if I have to I

**Halon** · 10-26-2012

If you're willing to think outside the Garrett/PTE box, people are selling off the shelf BW 66mm's for pretty cheap as well. "$728.18 paypalled or on card" is what one place is advertising. Pretty decent turbo for the price.

**4seasons69** · 10-26-2012

Quote:

Originally Posted by Halon

If you're willing to think outside the Garrett/PTE box, people are selling off the shelf BW 66mm's for pretty cheap as well. "$728.18 paypalled or on card" is what one place is advertising. Pretty decent turbo for the price.

I'm open to anything that will put me at least right back to where I was power wise or preferably more. I'll check them out

**Halon** · 10-26-2012

Here's some reading info on the turbo. A lot of turbo for under $800.
http://www.full-race.com/store/turbo...-79-turbo.html

**Shane@DBPerformance** · 10-26-2012

Keep in mind that a GT4294 can do 850whp, so if you goto a smaller billet turbo that can do 800-850whp, then you really aren't going to gain more power unless you improve other parts on the car or run better gas and turn up the boost.

Did Swifty ever put a good intercooler on that car? I remember the one that was on it when he had the car was not very efficient. I would switch the car to DSMLink too.

**4seasons69** · 10-26-2012

Quote:

Originally Posted by Halon

Here's some reading info on the turbo. A lot of turbo for under $800.
http://www.full-race.com/store/turbo...-79-turbo.html

Thanks!

Quote:

Originally Posted by Shane@DBPerformance

Keep in mind that a GT4294 can do 850whp, so if you goto a smaller billet turbo that can do 800-850whp, then you really aren't going to gain more power unless you improve other parts on the car or run better gas and turn up the boost.

Did Swifty ever put a good intercooler on that car? I remember the one that was on it when he had the car was not very efficient. I would switch the car to DSMLink too.

Ok that's good to know that the 4294 is capable of that much. And yes he did put a better intercooler in it and went from 1650cc injectors to 2150s. I'll double check if he changed anything else. I also had the head ported and polished. I think that's it for upgrades though. I'll keep link in mind and look into what I need to do to switch

**4seasons69** · 10-26-2012

Double post

turbotalon1g · 10-26-2012

I know someone getting rid of a 74mm BW ETT turbo if you are interested, local DSM guy.

Let me know. Made over 650 at RS at about 34psi IIRC, lot of room left there and that's thru an auto.

**4seasons69** · 10-26-2012

Ok ill let you know. I have to get the engine assembled and back in the car first and still need some parts for that so I'm not quite looking for a turbo yet but I want to figure out for sure what I'm going to do when it's time

turbotalon1g · 10-26-2012

It's not getting pushed for sale yet, but BW stuff is durable as hell IMO.