stock turbo replacement upgrade

[671 grains of reason]

well i have searched and maybe my searching skills are somewhat lacking as a brownie, but.
since the factory k04 is trash is there a turbo upgrade that maintains stock power levels but has a better design (i.e. no smokage)?

i have no plans of going bt and just want a reliable replacement.
thank you for your time and patience.


jon

[Snyeed]

search for bnr turbos.

[cld12pk2go]

bnrsupercars.com

I would strongly recommend the stage III as it can support close to 400whp and will spool very close to stock.

If you really never want much more than stock power then the stage I or II will suffice.

[zpele]

Fuck bolt-ons. Go with a top mount and do it right. GTX3076R. It will spool almost as fast as the trash K04 and it will give you so much more car that you will cream everytime you hear it spool up.

[671 grains of reason]

thanx guys but the stage one will do. im not power hungry kinda guy. just want a upgrade to the crappy k04.

[cld12pk2go]

Originally Posted by zpele Fuck bolt-ons. Go with a top mount and do it right. GTX3076R. It will spool almost as fast as the trash K04 and it will give you so much more car that you will cream everytime you hear it spool up.

~1400 RPMs later is hardly the same spool. The K04 can spool around 2300 PRMs. The last 3076 I tuned spooled around 3700 RPMs.

That is not even remotely close.

Originally Posted by pursuit_special thanx guys but the stage one will do. im not power hungry kinda guy. just want a upgrade to the crappy k04.

Why do you want to upgrade? Is your K04 smoking?

Personally, I am still beating the living hell out of my stock K04 and it is performing fine. So if yours is working ok, then there is no reason to waste money/effort to upgrade if you do not desire more power capability. The stocker is most likely going to live for > 100K miles without issue.

Also, many people end up upgrading twice due to wanting more later. This is why I suggest the BNR stage III as it can be make stock-like power at ~15 PSI or be pushed much further for more power later. You can expect full spool around 2800 RPMs with the BNR Stage III. The stage I/II will probably be closer to 2500 RPMs.

[MSP611]

i will be runnin a PG reworked... spools like 300rpms later then stock but with a lil bigger compressor wheel to make some power.

[cld12pk2go]

Originally Posted by MSP611 i will be runnin a PG reworked... spools like 300rpms later then stock but with a lil bigger compressor wheel to make some power.

FYI, K04 reworks are going to be less reliable than the stock K04 as they keep all the K04 guts except for the compressor wheel.

The BNR replaces all the rotating parts with much beefier GT28 components, which will be much more reliable.

[MSP611]

mayb so but i have seen multiple threads on here tht have had no problem

[cld12pk2go]

Originally Posted by MSP611 mayb so but i have seen multiple threads on here tht have had no problem

While that is true, there are also many failure threads.

Good luck.

[shadesofgray19]

bnr is the way to go. I recommend you get the stage II.

[MSP611]

i dont plan on it to go forever but i plan on it to last me to i get to where i wanna rebuild fully and go top mount gt3076

[Tokay444]

First you should learn to donate.
Then you should learn that the smoking turbo isn't actually caused by the turbo itself.

[dizzin9]

if u can wait til spring 2012, you can have mine for $500 shipped lol

[zpele]

Originally Posted by cld12pk2go ~1400 RPMs later is hardly the same spool. The K04 can spool around 2300 PRMs. The last 3076 I tuned spooled around 3700 RPMs. That is not even remotely close. Why do you want to upgrade? Is your K04 smoking? Personally, I am still beating the living hell out of my stock K04 and it is performing fine. So if yours is working ok, then there is no reason to waste money/effort to upgrade if you do not desire more power capability. The stocker is most likely going to live for > 100K miles without issue. Also, many people end up upgrading twice due to wanting more later. This is why I suggest the BNR stage III as it can be make stock-like power at ~15 PSI or be pushed much further for more power later. You can expect full spool around 2800 RPMs with the BNR Stage III. The stage I/II will probably be closer to 2500 RPMs.

I'm not talking about a regular 3076 im talking about the GTX3076R. Look it up before you start spouting ignorant shit.

[manelscout4life]

gtx3076 wont spool faster then the gt3076. It will just make more power.

[Ziggo]

Originally Posted by manelscout4life gtx3076 wont spool faster then the gt3076. It will just make more power.

QFT. The GTX difference is a more efficient compressor wheel, it has nothing to do with spool.

Even if you don't want power, get the stage 3. You can tune it however you want and the spool difference from stock is hardly noticeable.


Zigatapatalka

[dooderek]

use your mouth

[dr_banano]

has any body tried the stage 3 of bnr???

[PunjabiPlaya]

Originally Posted by dr_banano has any body tried the stage 3 of bnr???

I know ziggo does

[dr_banano]

Originally Posted by PunjabiPlaya I know ziggo does

is there any thread about it ??

[PunjabiPlaya]

BNR S3 Swap How To

ATR tuning A BNR Stage 3

[cld12pk2go]

Originally Posted by zpele I'm not talking about a regular 3076 im talking about the GTX3076R. Look it up before you start spouting ignorant shit.

Maybe you should understand the topic of discussion before posting misinformation...

They will both spool about the same and nowhere in the vicinity of a K04.

[dooderek]

hahahha zpele doesnt even know how cars work.

[Tokay444]

Lol

[dixie789456]

Originally Posted by Tokay444 First you should learn to donate. Then you should learn that the smoking turbo isn't actually caused by the turbo itself.

if that is the case then why did my smoking turbo disappear after getting a replacement turbo.... no other work was done to the car?

[Tokay444]

Ha!
The problem lies with the unrestricted volume of oil flow, and the fact that the return line dump back into the block right at the crank, so it just gets splashed back and doesn't drain, and then has nowhere to go but under the seals.

[dsmluck]

gt3071 + or GTFO.

Just kidding...kinda. I only know hearsay about the BNR's but for a similar price point you can get a drop in ATP 3071/76 for $300 more. I would run the 30 series @ 18 psi over the BNR @ 18 simply because I don't miss the torque spike down low. I find it much easier to manage wheel spin when it comes on in a linear fashion rather than the on/off switch at lower rpms of the quicker spooling turbos. I know the BNR will not be as bad as the K04 but I know many people here really enjoy the driving dynamics of the GT30 series.

[MSMS3]

Stock turbo is not trash. And most "smoking" turbos that are replaced turn out to have nothing wrong with them. The problem is in the PCV system and the restrictor size in some of the earlier stock turbos. Mazda has revised the turbo several times. There's good data that the current replacement turbo does have substantially smaller oil passages that work like an aftermarket restrictor.

If you want that quick spool up of the stock turbo and don't plan to make more than 300-310 or so whp, stick with the stock turbo.

[dixie789456]

Originally Posted by Tokay444 Ha! The problem lies with the unrestricted volume of oil flow, and the fact that the return line dump back into the block right at the crank, so it just gets splashed back and doesn't drain, and then has nowhere to go but under the seals.

so then if that is the case why is my new turbo not smoking? it has more miles on it than old smokey did! lol

[cld12pk2go]

Originally Posted by dsmluck gt3071 + or GTFO. Just kidding...kinda. I only know hearsay about the BNR's but for a similar price point you can get a drop in ATP 3071/76 for $300 more. I would run the 30 series @ 18 psi over the BNR @ 18 simply because I don't miss the torque spike down low. I find it much easier to manage wheel spin when it comes on in a linear fashion rather than the on/off switch at lower rpms of the quicker spooling turbos. I know the BNR will not be as bad as the K04 but I know many people here really enjoy the driving dynamics of the GT30 series.

It cost alot more than $300 when you consider all the other supporting parts that are required to go to a GT30 series turbo (manifold, downpipe, intake, in addition to the more expensive turbo). That is the beauty of the BNR.

Also the boost/torque spikes you refer to can be totally removed via tuning. They are not intrinsic to the turbo.

[Nitr0EngiE]

i still laugh at people who blame the pcv valve and shit for the garbage ko4, i got gt3076 and never had a hint of smoke issues.

[Tokay444]

Originally Posted by dixie789456 so then if that is the case why is my new turbo not smoking? it has more miles on it than old smokey did! lol

See the post RIGHT above yours for your answer.

[dsmluck]

Originally Posted by cld12pk2go It cost alot more than $300 when you consider all the other supporting parts that are required to go to a GT30 series turbo (manifold, downpipe, intake, in addition to the more expensive turbo). That is the beauty of the BNR. Also the boost/torque spikes you refer to can be totally removed via tuning. They are not intrinsic to the turbo.

No. The only thing you need extra over a BNR is a new TIP. Picked one up for $150 used. You can easily rock a 3071 or 3076 with the stock mani, intake, and DP. I am on the stock manifold and normal sized MAF and I put down about 40 more HP than a BNR stage 3 that Dynoed with similar mods at my altitude. Granted I paid about $400 more between the TIP and turbo. Pretty insignificant when you compare the power potential. Even for lower power goals I pick a cooler running gt30.

[Alpha]

Originally Posted by dsmluck No. The only thing you need extra over a BNR is a new TIP. Picked one up for $150 used. You can easily rock a 3071 or 3076 with the stock mani, intake, and DP. I am on the stock manifold and normal sized MAF and I put down about 40 more HP than a BNR stage 3 that Dynoed with similar mods at my altitude. Granted I paid about $400 more between the TIP and turbo. Pretty insignificant when you compare the power potential. Even for lower power goals I pick a cooler running gt30.

Actually, the BNRs can be ran with the factory sized TIPs. Forzda and the others that are running them have confirmed this.

For OP's application, I'd also recommend the S3 BNR.

[mazdaspdmike]

Originally Posted by Alpha Actually, the BNRs can be ran with the factory sized TIPs. Forzda and the others that are running them have confirmed this. For OP's application, I'd also recommend the S3 BNR.

He was referring to the ATP turbo. It needs a bigger TIP because it's got a 4" inlet.

BNR's are designed to be drop-in with stock parts.

[dooderek]

just to play devils advocate here. ask any tuner who has never dealt with a mazdaspeed. they will all say the same thing about the k04, great fucking turbos. not sure if its triple k or mazda engineering to blame, but they are to the outside msf world a very good turbo

[08.5MS3]

Ask any GTI owner with a K04. Shit makes power.

[Chimmike]

Or the Cobalt SS guys. Their K04 is great.

[Ziggo]

Originally Posted by chimmike Or the Cobalt SS guys. Their K04 is great.

Their K04 is a twin scroll with a big fat A/R so it doesn't choke off on the top end.