jayswizz

Hey Guys. I've been looking for a compressor map for a precision 5976e to see if it would work for my setup. anyone know where to find one or even have any experience with it. looking to make 500whp on e85. I can't seem to find any info on it anywhere.

Schister66

I dont believe Precision has compressor maps available for any of their units.

TheShodan

iTrader: (14)

Nope. Not available to the public if they had them made. creating adibiadic efficiency compressor maps is extremely expensive to do..

jayswizz

well that explains why I couldn't find one haha. you think it's capable of supporting 500-550whp efficiently with .82ar housing?

TheShodan

iTrader: (14)

If they say max power 620hp like on the site, then that's about 500whp at high boost pressure over 2.0PR. (26psi). On a .82A/R, 550whp is very stretched based upon what I suspect they're using.

Good luck with it, let us know how it goes if you've indeed purchased it

jayswizz

Hmm. Thanks for the info. probably gonna go with a 6776 Instead And have some room to grow if I want.

TheShodan

iTrader: (14)

That will be interesting...

Just remember, there's such a thing as having too much turbo, just as much as having not enough. Going with the "Big turbo-Low boost" approach has a real tendency to deliver the exact opposite of the result you want.

But, sometimes we have to let life teach us our lessons

Again.. Good luck.

Schister66

Why not find a happy medium and get the hell away from Precision...

Borg Warner S256/S259 or even an S300 60/68 would do the trick. And these are built like a brick shithouse - not some failure prone PTE unit

Borg Warner / AGP S256-RS Turbocharger
Borg Warner S300sx3 60-68

seelback

Curious to see results from the Garrett GTW turbos in the future. Especially a GTW3884R(aka GTW6265R) vs. Precision 6266 Gen2 thread. Prices are roughly GTW $1540 vs. Gen2 $1730 and both rated at 800hp. I just bought a 6266 Gen2 and wish I would of known about the GTW turbos.

TheShodan

iTrader: (14)

The GTW line actually isn't bad at all, but the only thing I see as a good advantage is that even the journal bearing versions use water cooling, and they also have ported shrouds as their standard housing set. Other than that, there are a lot of other good alternatives that really put the 6266 to shame. From Garrett (in addition to their derivatives), Borg-Warner, and Turbonetics It's just that the Precision line is so popular because someone's cousin's sister's brother's nephew got one.

mar778c

iTrader: (1)

Put the 6266 to shame, how?

wantboost

iTrader: (2)

This...

BorgWarners units are built like tanks...

The GTW line is also nice, it's basically Garretts answer to Precisions sizing routine but with better technology and reliability

ATP TURBO - The Premiere Provider of Turbocharging Components

Another alternative would be the new GTX29 series Garrett just released. They use a trimmed down GT30R turbine wheel and come in GTX2967R, GTX2971R, and GTX2976R, all will make at least 500hp. The 2971 would be your best option for response and power potential (560 crank hp)

Garrett GTX2971R (90 Trim Turbine Wheel) Super Core - WITHOUT TURBINE HOUSING : atpturbo.com

Also there's an endless amount of turbine housing options, from standard t25 and t3 offerings to v-band inlet/outlet, twin scroll housings (both t3 and vband), external wastegate t25 housings, and so on.

TheShodan

iTrader: (14)

Sorry, I'll rephrase.. Can be very competitive. (based upon overall size, aerodynamics, characteristics, airflow conversion rate.)

[Disclaimer] General definition of "Power" that is created is based upon calculating factors that are not impliedly or expressly stated either generally or specifically without conclusory presumption. Better?

jayswizz

I thought precision had really stepped there game up the past few years?

wantboost

iTrader: (2)

in regards to what exactly?

jayswizz

the quality of their product

TheShodan

iTrader: (14)

wantboost

iTrader: (2)

it's really hit or miss. From what I understand they are still using steel thrust bearing retainers in some of their turbos which has been a direct cause of bearing failure in lots of precision units since the steel collars retain more heat than their brass counterparts...

Also in certain models there's been a lot of compressor wheel deformation/flex around the hub under certain conditions causing compressor wheel failures.

Then of course there are people who have never had a single issue with a precision turbo and then there are those who suffer continuous failures.

Also precision has developed a habit of citing "oil contamination" in a lot of the failures they examine, absolving them of any repair/replacement under warranty. Also it's been taking precision a long time to get around failed turbos. I know some people have waited as much as 6 months or longer just to have Precision teardown and inspect their unit.

So there's two sides to the Precision camp but you'll find the majority on here try to stay away when possible while there are a few loyalists. I know for a fact that Tepid1 has been running his precision unit forever without failure problems, mar788c or however it's spelled has had a good track record with the precision units he's run, Natural Aspirations has also had good results with the units he's worked with.

mar778c

iTrader: (1)

I build by own units.

LightningTeg

Precisionseems to be hit or miss and that alone scares me off. I dont want to spend $1000+ to have them tell me its oil contamination from failure or another excuse I saw on yellow bullet from someone who apparently didnt have enough rubber couplers to relieve stress? lol