Mi 6466 broken shaft...

[Boost Solution]

hi i buy a new 6466 bb vband .82 turbo for mi Street/Strip car

I tune it to 30 psi with 90 percent duty cycle the car throw 620 whp on mustang dyno and ran 9.91 perfecly also gave several passes on the street.

I improve my fuel system and change my rods turn the boost up to 40psi and make 801 whp at 40 psi on dynojet whit a nice flat power-band. I tried it on the street, oil pressure, afr, egt everything perfect. I take the car to the track, rolling out of the tree the car ran 9.77 at 156mph with 40-44 psi boost.
for the next pass I start with two steep, spinning first gear, second perfect when I'm in third gear the car star to lose boost and suddenly turbo snap the shaft

the Dyno run https://www.youtube.com/watch?v=pEQERb_AXrQ

the death off the turbo
https://www.youtube.com/watch?v=2nXfuNCEb7g

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[Archer Fabrications]

It is well know that small shaft turbo can not take abuse too long. Even bigger shaft turbo like the gt4088r will fail under high boost. I had seen two snapped 16g shafts from running 27 psi+ but guys bring it to 30psi+ many time without issue. Medium frame turbo like the PTE turbo that snapped the shaft is a small shaft turbo. It is going to snap the shaft being operated like that. I believe the hx40 Has a bigger shaft than the midframe pte turbo. The air cool fins idea from pte to me is a little goofy. Those fins on the center section is not doing crap to keep it cool. That turbo need water cool. In my opinion, all turbos should be water cool.

Hx40 has a 7mm shaft

Gt35r frame turbos (which these pte and fp's are based off are 6.5mm. The gt40's are something like 8mmThe hx52 is 8mm

 

[JusMX141]

I believe the hx40 Has a bigger shaft than the midframe pte turbo.

Not by much....7mm (HX40) versus 1/4" (PTE).

Why PTE didn't choose Garrett T04S-spec shaft for a turbo this large is beyond me. Turbonetics uses T04S-spec shafts for turbos as small as their T3-series.

 

[killercolt]

I bought a brand new PTE non billet 6765bb back before I bought my gt35r. The pte6765bb had a ported shroud housing. The compressor housing casting was ultra thin and the machining in the ported shroud area was straight garbage. It has a bunch of machine flashings like it was cut with a dull cutter. The bearing system was ultra noisy compared to the Garrett ball bearing system. It sounded like the bearing race was worn out. I even put thick oil into it to buffer the noise but that did not help. To make it worst, the turbo did not spin smoothly. It felt like the shaft was slightly bent because there was a catch as I spun the wheels. I thought it was scraping the housings so I took the housings off. That was not the case. I sent the turbo back to PTE for my warranty fix and got it back with the same problem. After spending about 1500+on the turbo, I sold it for 1000 just to not deal with a pos. I told myself I will not buy another pte turbo. That is too much money to spend on okay part.

I installed a few PTE ceramic bb 6262 for my friends in the pass two years. These turbos are a lot smoother and quieter. The casting are still too thin to control burst in my opinion. The machine work in the ported shroud area is still garbage. The area where circumferential slits meet drilled ports has machine flashings that can potential break off and trash the ultra thin billet compressor wheel.

For the price that pte is charging for their turbo, I think the build quality can be a lot better. However, their turbos are still putting down impressive power. They do offer year warranty so you might be okay. I had to pay the shipping.

 

[keltalon]

I bought a brand new PTE non billet 6765bb back before I bought my gt35r. The pte6765bb had a ported shroud housing. The compressor housing casting was ultra thin and the machining in the ported shroud area was straight garbage. It has a bunch of machine flashings like it was cut with a dull cutter. The bearing system was ultra noisy compared to the Garrett ball bearing system. It sounded like the bearing race was worn out. I even put thick oil into it to buffer the noise but that did not help. To make it worst, the turbo did not spin smoothly. It felt like the shaft was slightly bent because there was a catch as I spun the wheels. I thought it was scraping the housings so I took the housings off. That was not the case. I sent the turbo back to PTE for my warranty fix and got it back with the same problem. After spending about 1500+on the turbo, I sold it for 1000 just to not deal with a pos. I told myself I will not buy another pte turbo. That is too much money to spend on okay part.

I installed a few PTE ceramic bb 6262 for my friends in the pass two years. These turbos are a lot smoother and quieter. The casting are still too thin to control burst in my opinion. The machine work in the ported shroud area is still garbage. The area where circumferential slits meet drilled ports has machine flashings that can potential break off and trash the ultra thin billet compressor wheel.

For the price that pte is charging for their turbo, I think the build quality can be a lot better. However, their turbos are still putting down impressive power. They do offer year warranty so you might be okay. I had to pay the shipping.

Killa your posts are always insightful!

 

[diambo4life]

I have yet to break a PTE DBB turbo and my cars are run hard and daily'd. I have recently had a PTE 6776, PTE GT35R and currently a PTE GT3076R. All DBB and they work great. Those turbos all operate in the 30-40psi region so it's not like I havent tested them. The 35R was in my old car the longest and gave me tons of 10's passes. I have owned an FP3065 and that worked great too...no issues. Unfortunately, I have had a bad experience with a Holset HX40. Made good power, spool was great but I broke the shaft on that one. Now...I don't know the history of that turbo since it was on the car when I bought it. A few friends of mine running PTE JB turbos in DSM platforms all had horrible experiences. I never touch those. A few friends with non DSMs having good experiences with PTE JBs. A mixed bag for ya.

 

[s366gsx]

You guys have all have more shit running out of your mouth than I've ever seen. I daily drove my MHI big 16g at 29 psi on 93 pump gas for 2 years straight and I have a lead foot. No shaft play, no coolant lines, and the turbo is still doing work to this day on someone else's car. You guys need to boost leak test your cars and put a pressure sensor in your down pipe. Precision turbo's are PROVEN, just because some moron blew his up, they are automatically garbage? There is more success stories than horror ones. It CANT be the customer at all huh? Keep riding FP's d*ck...they had to come out with the Super94/99 as a desperate attempt to try and compete with Precision, and used Devin as the guiniea pig because they know all of their customers look up to him. These turbo manufacturer arguements are a little ridiculous. FP sells good turbos, Garrett sells good turbos, Precision sells good turbos.. To each their own, but horsepower and timeslips have proven time and time again that Precision is ontop. And I LOVE the poor attempt on attacking their "ceramic ball bearing design" because if you go do some searching you'll find out that Borg Warner EFR series which are the most expensive turbos on the market are also ceramic bearings. Get with the times man, its 2014.

 

[AK Maniak]

You guys have all have more shit running out of your mouth than I've ever seen. I daily drove my MHI big 16g at 29 psi on 93 pump gas for 2 years straight and I have a lead foot. No shaft play, no coolant lines, and the turbo is still doing work to this day on someone else's car. You guys need to boost leak test your cars and put a pressure sensor in your down pipe. Precision turbo's are PROVEN, just because some moron blew his up, they are automatically garbage? There is more success stories than horror ones. It CANT be the customer at all huh? Keep riding FP's d*ck...they had to come out with the Super94/99 as a desperate attempt to try and compete with Precision, and used Devin as the guiniea pig because they know all of their customers look up to him. These turbo manufacturer arguements are a little ridiculous. FP sells good turbos, Garrett sells good turbos, Precision sells good turbos.. To each their own, but horsepower and timeslips have proven time and time again that Precision is ontop. And I LOVE the poor attempt on attacking their "ceramic ball bearing design" because if you go do some searching you'll find out that Borg Warner EFR series which are the most expensive turbos on the market are also ceramic bearings. Get with the times man, its 2014.

For starters you can't really compare a baby turbo like a 16g to the Precision turbo in question. This isn't really a question of performance but rather reliability so with that being said, dyno sheets and time slips aren't really relevant.

 

[s366gsx]

For starters you can't really compare a baby turbo like a 16g to the Precision turbo in question. This isn't really a question of performance but rather reliability so with that being said, dyno sheets and time slips aren't really relevant.

Can you not fcking read? They said 16g's snap shafts at those boost levels. I did not compare a 16g to a precision turbo .

and Precision turbo's are plenty reliable if you know how to properly set up a car for the power level you're shooting for. Give any Joe Shmoe a $1900 turbo, what do you think is going to happen when they push it to the limits?

 

[motomattx]

You guys have all have more shit running out of your mouth than I've ever seen. I daily drove my MHI big 16g at 29 psi on 93 pump gas for 2 years straight and I have a lead foot. No shaft play, no coolant lines, and the turbo is still doing work to this day on someone else's car. You guys need to boost leak test your cars and put a pressure sensor in your down pipe. Precision turbo's are PROVEN, just because some moron blew his up, they are automatically garbage? There is more success stories than horror ones. It CANT be the customer at all huh? Keep riding FP's d*ck...they had to come out with the Super94/99 as a desperate attempt to try and compete with Precision, and used Devin as the guiniea pig because they know all of their customers look up to him. These turbo manufacturer arguements are a little ridiculous. FP sells good turbos, Garrett sells good turbos, Precision sells good turbos.. To each their own, but horsepower and timeslips have proven time and time again that Precision is ontop. And I LOVE the poor attempt on attacking their "ceramic ball bearing design" because if you go do some searching you'll find out that Borg Warner EFR series which are the most expensive turbos on the market are also ceramic bearings. Get with the times man, its 2014.

I appreciate your love of all things Borg Warner, but the BW EFR turbos are HARDLY the most expensive turbos on the market by a long shot.

Garrett Dual Ball Bearing GT5541R - AGP Turbochargers, Inc. Store

https://www.theboostlab.com/products/borg-warner-efr-series.html

 

[JusMX141]

To each their own, but horsepower and timeslips have proven time and time again that Precision is ontop.

You must be talking about some other platform...I only see two PTE turbos listed in the top 40 on DSMTimes.

DSMTimes.org - Home


If you've come here with the obvious intent of starting a flame war, you've done a fine job. If you don't have any facts or personal experience to add to the discussion, please don't respond.

 

[LandSpeed-DSM]

My hands on experience with PTE at this involves building/tuning them on other people's cars.

Nothing outstanding good or bad to say based on that. One car had a premature failure with a JB unit.

However, watching the shenanigans with the Pro-Mod guys and how it was handled by PTE put me off them.

Then after reviewing this, a long but informative read with lots of noise to filter.. it is YB after all. Garrett directly addresses Harry Hruska, Harry disputes and eventually backpedals:
Garrett Turbochargers and the Truth - Yellow Bullet Forums

I would not personally recommend them at this point in time nor do I support those business practices.

Using unwitting customers for R&D, willing to cut corners on safety (burst containment IS a big deal) and pointing fingers instead of taking responsibility is not acceptable.

Attributing records solely to a turbo brand is silly. Especially when there is nothing revolutionary about them. The entire setup has to be complimentary at those levels of competition.

Regarding the EFR series comments.. you also get a lot of built-in hardware with them, on top of OEM testing standards.

 

[JusMX141]

Attributing records solely to a turbo brand is silly. Especially when there is nothing revolutionary about them. The entire setup has to be complimentary at those levels of competition.

Quite true, considering PTE's journal bearing platform is a carbon copy of Garrett's T3 design....they even use Garrett T3-spec turbine housing a/r's (.63, .82). At that point all they're doing is reinventing the wheel, so-to-speak...it's not like PTE designed their own complete turbo from the ground up.

 

[Archer Fabrications]

You could say the same about fp, all they do is make a compressor, and briefly a billet chra. Which i sadly missed out on. But otherwise the two products are similar, with the exception of FP using genuine garrett t3 chra's and turbine wheels.

 

[boost97gst]

Im pulling this one up but i have a first hand update on PTE JB turbo. I pulled my engine yesterday. Pulled the turbo today. Happy to report theres barely ANY shaftplay. Same as when it was new. I suppose there's always SOME shaft play(side to side) with zero oil pressure. No in/out play at all. None. Every bit of this turbos 4500 mile life every time i took it out i boosted it pretty hard. 30psi pulls.

I checked it and totally didnt know what turbo I bought brand new from extreme . Its not a 5858 its a 5558. Im old, what can i say. Makes the 52lbs/min on a 63 ar dsm housing, stock ported 2g mani, look pretty good actually. This is my own personal experience with PTE. Not bringing this up to praise or bash their turbos, just what i have seen first hand. Im going to put it back on after the AT/AWD swap and run it harder than ever before i swap out for a huge t3 setup. I think ill need a bigger o2 housing and possibly a SMIM to get it completely maxed out. I cant imagine with that turbine housing, it going much further than 52lbs/min. I would be very surprised if i could get past 33 or 35psi. I am going to run a 3ft exhaust but the o2 may be a restriction, diameter is limited to 2.5"

 

[rhamlinii]

Wow.................WTF.