Question for the turbo gurus out there
 

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!)

Re: Question for the turbo gurus out there
 

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

Re: Question for the turbo gurus out there
 

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

Re: Question for the turbo gurus out there
 

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.

Re: Question for the turbo gurus out there
 

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.

Re: Question for the turbo gurus out there
 

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

Re: Question for the turbo gurus out there
 

What about a billet 6766?

Re: Question for the turbo gurus out there
 

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.

Re: Question for the turbo gurus out there
 

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

GT4202 is pretty old school technology.

Re: Question for the turbo gurus out there
 

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.

Re: Question for the turbo gurus out there
 

That is something that has crossed my mind.


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

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

Re: Question for the turbo gurus out there
 

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.

Re: Question for the turbo gurus out there
 

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

Re: Question for the turbo gurus out there
 

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

Re: Question for the turbo gurus out there
 

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.

Re: Question for the turbo gurus out there
 

Thanks!

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

Re: Question for the turbo gurus out there
 

Double post

Re: Question for the turbo gurus out there
 

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.

Re: Question for the turbo gurus out there
 

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

Re: Question for the turbo gurus out there
 

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

Re: Question for the turbo gurus out there
 

Billet HX52?

Re: Question for the turbo gurus out there
 

Now there's an idea! Any idea on the price or where to get holsets?

Re: Question for the turbo gurus out there
 

I have a gt 4202 standard bearing 2l build that makes good power. Last year at 44psi on e98 my car made 947awhp at DB in shoot out mode.

I will buy a billet 67 or Borg Warner version of the 4202 when this turbo lets the ghost out, so far 3 years at 40psi+ but I know my days are numbered.

Call up MAP for a good price when you make a choice on turbo brand and size.

~John

Re: Question for the turbo gurus out there
 

If you are interested in holsets I would check diesel sites. Or get a used one, the rebuild kits are like $40.

Re: Question for the turbo gurus out there
 

I have a rebuild kit I need to get rid of.

Re: Question for the turbo gurus out there
 

Ok sounds good ill call map and see what they have to say too. Sounds like I might as well stick with the 4294 for now since there is a good chunk left in it

Ok ill search around see what I can come up with. Thanks

Re: Question for the turbo gurus out there
 

Well, just because the 4294 can do 850 on some cars doesn't mean your car will ever get to that. Turbo size alone does not determine power output, look at Vassils car and the power it made at not even that crazy of boost levels, most people won't even get close to touching those numbers with the same turbo, but he has his combo working extremely well.

Re: Question for the turbo gurus out there
 

Oh I know just because something is capable of something or a setup should produce a certain power doesn't mean it will. It made good power before and sticking with the 4294 is looking to be the most cost effective way to get the car back on the road unless I find a killer deal on something. There are some minor changes like different injectors and porting and polishing of the head. So hopefully we can at least get it back to where it was before and then go from there.

Re: Question for the turbo gurus out there
 

Might be a hair smaller than what you're looking for, but someone is selling a brand new S364 (I've never heard of this size before) for dirt cheap. Figured worth mentioning though.

http://supraforumz.com/mkiv-and-2jz-...rbo/?topicseen

The 63mm is rated around 75lb/min, and the 66mm is rated around 82lb/min. So this would probably be somewhere around 77lb/min, but again never heard of a 64mm comp wheel BW before.

Also here is the 66mm's for cheap in case anyone else is interested. They also offer in house designed billet compressor wheel "upgrades" as well.
http://supraforumz.com/boost-lab/sup...bw-s366-91-ar/

Re: Question for the turbo gurus out there
 

If you want cheap and still make good power then a billet HX52 with a 16cm turbine housing isn't a bad turbo, if you are looking for something with a little better spool time and as good or better flow and are willing to spend the money I would go with a PTE 6466, that is a very good turbo but they only offer it in dual BB no a cheaper journal bearing option, there is also a GT4288 off a diesel on craigslist for $200, idk what you could use to fix yours or whatever but here is the link http://minneapolis.craigslist.org/cs...317543854.html

Re: Question for the turbo gurus out there
 

Just a question but why does this car keep eating turbos? Didnt swifty just replace it? I just think its weird that this thing keeps needing turbos

Re: Question for the turbo gurus out there
 

When the motor popped something went through the exhaust and hit the turbine wheel... Piece of valve, piston, whatever it was it chipped a blade if I remember correctly.

Re: Question for the turbo gurus out there
 

If it has a turbo eating problem #1 is to figure out how the turbo is failing, thrust bearing failure is usually indicative of an outside problem like intake restriction or exhaust restriction or a malfunctioning and/or under sized bov, if the journal bearings are failing check oil pressure and make sure the oil drain is free flowing and that the correct size restrictor is being used if there even needs to be one on it at all, Holsets don't need them usually, and an inline oil filter might not be a bad idea also if it doesn't have one, if it does have one make sure it is clean and flows freely, also was the turbo that was put on it new from Garrett or used and/or rebuilt, if used and/or rebuilt then improper assembly/balancing could have been an issue. Just what I know about turbo problems

Re: Question for the turbo gurus out there
 

You are correct sir. The only thing wrong with the turbo is a chipped exhaust wheel. To fix the current turbo it will be 750 to fix it. Since I can get a new center section for 950 I really can't justify fixing it. So since I have to shell out a grand anyway I figure it might be worth it to look into if there is a better option to make as much or more power than a gt4294

Re: Question for the turbo gurus out there
 

Double post. Stupid phone lol

Re: Question for the turbo gurus out there
 

There is a 4202R in the sales thread, or go to a JB PTE 6766.

Re: Question for the turbo gurus out there
 

I seen the 4202R in the fs thread. It's a pretty good deal so if I can come up with the funds before it sells ill probably pick it up.