Highflowed Turbo Help

[limpus]

Now all we need is someone to come here and say that an atmo bov will help his nylon compressor wheel live longer and Mafia will have a heart attack....

[The Mafia]

It's an alloy. How can you spin nylon at 100,000rpm and have it not flex, warp, or fly to pieces?

Last I heard, there was a nylon spacer. That's about it.

[JustinP]

I have one sitting on my workbench, it's definitely nylon or some kind of plastic. It blades certainly feel like plastic, they are even a bit bendy! And due the thinness of the leading edge of the blades you can actually see tiny indents in the plastic itself.

Mafia - they are really Nylon - i know it doesnt seem likely but I have swapped my stock turbo with another one plus seen a whole bunch of others at the wrecker first hand and in this case the internet is correct - take a look at one if you can and you will see that it is really some sort of black plastic.

I will have my turbo off in around 1 week and will happily post a photo of the compressor.

[gotRICE?]

So you're just going from what the internet says, with nonform of confirmation, or have you actually touched one, and inspected one closely?

You obviously haven't. You also obviously don't realise how much stress a compressor wheel has to endure.

But then, going by your comments, they shouldnt believe what your saying either because its on the internet too. hehehe.

Is it possible that there was some uber new nylon composite created that does work? They had to change ball bearings to work in turbos because normal ones would explode under the conditions too.

Everything i have ever read, bar what you have just said, has stated that the stock compressor is a nylon composite thingy too. Not that i care.. i threw mine away already

[fastjetjockey]

It's an alloy. How can you spin nylon at 100,000rpm and have it not flex, warp, or fly to pieces?

Bulletproof vests? They're made from Kevlar, which is an aramid synthetic fibre. Stops bullets.

Lexan? Another polycarb resin thermoplastic. Used as aircraft canopies, space suit visors and.... bulletproof windows.

Tweeters? That's right, fully sick speakers capable of up to 65,000 Hz in response can be partially made from... you guessed it. Plastic. Polyethylene terephthelate to be precise. And to put that frequency into perspective, it's 3,900,000 RPM (or more correctly, Oscilliations Per Minute). It's also the same stuff that your coke bottles are made of; PET.

Annealed 6061-O Aircraft Grade Aluminium has a maximum tensile strength of 125 MPa. While polyamide-amide has a maximum tensile strength of 152 MPa. In the late 1980's Ford Motor Co. went on to build a plastic engine that produced 318BHP at 11,000RPM and redlined at ~14,000RPM. It only weighed 69kg's, as opposed to it's all-iron original of 188kg's. The only metal parts in the engine were metal cylinder sleeves, metal combustion chamber tops, metal piston crowns, bearings, valves and seats, and a stock 2.3L Pinto crankshaft. Nearly everything else in the engine, including the block, rods and piston skirts were made of Torlon thermoplastics - a polyamide-amide. Although that engine never went into a vehicle, Cosworth built a plastic engine based on the Cosworth BDA that weighed 78kg's. Plastic parts included the engine block, cam cover, air intake trumpets, intake valve stems, piston skirts and wrist pins, connecting rods, oil scraper piston rings, tappets, valve spring retainers and timing gears. The T616 HU04 car raced for two season, and finished with a best position of 3rd in class at the 1985 Road America 500.

Twin Turbo 3rd-Gen RX-7's had an abradeable lining on the compressor wheel to aid in creating a perfect seal to maintain compressor efficiency after thermal and centrifugal expansion. Jet engines also use the same technology.

There are countless instances in the world around us where plastics are doing some amazing things. Especially when you consider what we had 40 years ago. Plastics can be engineered to make use of the covalent bond between every single molecule, and as a general rule, covalent bonds are much stronger than metallic bonding. There are plastics that offer strength comparable to alloys while offering characteristics such as self lubrication, wear resistance, reduced weight and chemical resistance, which metals cannot offer. So take all this on board, and try to accept the fact that all my fun comes from a little nylon compressor wheel boosting me around...

[Room42]

Or we could all man up and buy a real turbo ie: something that you can definitely say "That shit aint plastic". I have a profound sense of relief now, knowing that I can boost my turbo to 25psi and beyond and not have it blow to pieces. Instead the worry has turned to the engine blowing itself to pieces when the turbo gets turned up to 25 psi and beyond.....

[fastjetjockey]

Well Nathan, we're all walking the modified car path. But not all of us are as far ahead as you. The OP could have a highflowed turbo, so he's on the right track.

[Slattery Gts-t]

Ha ha im new to these forums but iv read alot of threads where "the mafia" gets shot down because his opinions are different to everyone else's

Anyway i called MTQ and they confirmed my turbo is high flowed, too bad the standard ecu hates it

Edited October 10, 2011 by Slattery Gts-t

[Harey]

Anyway i called MTQ and they confirmed my turbo is high flowed, too bad the standard ecu hates it

I have a fix for that! Set of injectors, a Z32 AFM and a tune

[fastjetjockey]

I have a fix for that! Set of injectors, a Z32 AFM and a tune

Yeee Boiiii!!!

[Room42]

Well Nathan, we're all walking the modified car path. But not all of us are as far ahead as you. The OP could have a highflowed turbo, so he's on the right track.

Yep you are right. I was being slightly sarcastic with my comment before. I guess that's hard to portray online. Nothing wrong with a highflow. I would have done it myself except I am chasing more power. Hey I'm not that far ahead anyway. I only bought my car in March this year.

Not having a go at The Mafia but some of the stuff he says to people and the way he comes across sometimes is tactless. I think that conversation on here should be no different than face to face. I guess as long as your not name calling etc then it doesn't really matter what you say or how you come across

[The Mafia]

Out of the few series 2 and gtt turbos I've seen, theyve certainly looked steel to me. Even my 1996 was a steel wheel turbo. And it was all original. Had the jap papers to prove it.

And thats hardly the case slatterly - did you read a few threats where some wanker like yourself has posted for the 35,547th time that his car stalls because he's installed a bov on a system that wasn't meant to leak just to sound cool?

As I said, I've seen many gts-ts and gtts and never seen a plastic compressor. Either someone is playin tricks on me or it's just luck that some were steel.

[RandomHero83]

I have a 98 34GTT and it has the nylon comp wheel, My tuner confirms as well.

[Rolls]

Lol mafia I have seen one and yes it is some form of nylon/plastic, just because you haven't touched one doesn't mean they don't exist. As mentioned above there are plenty of synthetic materials that can be made with very high strengths.

Maybe try talking to people with some respect instead of carrying on screaming all the time and people won't jump at an opportunity to troll you.

Edited October 11, 2011 by Rolls

[britz1]

Lol mafia I have seen one and yes it is some form of nylon/plastic, just because you haven't touched one doesn't mean they don't exist. As mentioned above there are plenty of synthetic materials that can be made with very high strengths.

Maybe try talking to people with some respect instead of carrying on screaming all the time and people won't jump at an opportunity to troll you.

Haha +1 to all of that

[Hanaldo]

Bulletproof vests? They're made from Kevlar, which is an aramid synthetic fibre. Stops bullets.

Lexan? Another polycarb resin thermoplastic. Used as aircraft canopies, space suit visors and.... bulletproof windows.

Tweeters? That's right, fully sick speakers capable of up to 65,000 Hz in response can be partially made from... you guessed it. Plastic. Polyethylene terephthelate to be precise. And to put that frequency into perspective, it's 3,900,000 RPM (or more correctly, Oscilliations Per Minute). It's also the same stuff that your coke bottles are made of; PET.

Annealed 6061-O Aircraft Grade Aluminium has a maximum tensile strength of 125 MPa. While polyamide-amide has a maximum tensile strength of 152 MPa. In the late 1980's Ford Motor Co. went on to build a plastic engine that produced 318BHP at 11,000RPM and redlined at ~14,000RPM. It only weighed 69kg's, as opposed to it's all-iron original of 188kg's. The only metal parts in the engine were metal cylinder sleeves, metal combustion chamber tops, metal piston crowns, bearings, valves and seats, and a stock 2.3L Pinto crankshaft. Nearly everything else in the engine, including the block, rods and piston skirts were made of Torlon thermoplastics - a polyamide-amide. Although that engine never went into a vehicle, Cosworth built a plastic engine based on the Cosworth BDA that weighed 78kg's. Plastic parts included the engine block, cam cover, air intake trumpets, intake valve stems, piston skirts and wrist pins, connecting rods, oil scraper piston rings, tappets, valve spring retainers and timing gears. The T616 HU04 car raced for two season, and finished with a best position of 3rd in class at the 1985 Road America 500.

Twin Turbo 3rd-Gen RX-7's had an abradeable lining on the compressor wheel to aid in creating a perfect seal to maintain compressor efficiency after thermal and centrifugal expansion. Jet engines also use the same technology.

There are countless instances in the world around us where plastics are doing some amazing things. Especially when you consider what we had 40 years ago. Plastics can be engineered to make use of the covalent bond between every single molecule, and as a general rule, covalent bonds are much stronger than metallic bonding. There are plastics that offer strength comparable to alloys while offering characteristics such as self lubrication, wear resistance, reduced weight and chemical resistance, which metals cannot offer. So take all this on board, and try to accept the fact that all my fun comes from a little nylon compressor wheel boosting me around...

This is the most accurate post I have seen on these forums for a long time.

Mafia, I know you don't like to believe stuff you read on the internet, but how about scholar articles, do they count? http://www2.dupont.com/Automotive/en_US/assets/downloads/nylon_under_hood.pdf

I have seen Nylon used in stressful conditions first hand, my dad owns a Stemme 10 VH-GTS motorglider:

The propeller on this glider is made of nylon composite, and reaches speeds during take-off of over 200,000rpm. During mid-air cruising use, the propeller generally operates at around 80,000rpm, and will happily spin at over 200,000rpm for hours. The only reason it doesn't is because the engine uses so much fuel to keep it spinning at those speeds, as well as the engines tendency to overheat due to being air-cooled. The longest recorded flight time is 14hrs, though that involved a lot of time as a pure-glider with the prop folded away. Dad and myself have personally flown to Broome in this glider, which was over 11 straight hours of the prop being operated at around 80,000rpm.

There are also nylon components in the fuselage of the glider, as well as the motor (for obvious reasons, being lightweight is incredibly important for these things). The con-rods and valve-stems being the ones under most stressful conditions, but also the exhaust and intake manifolds and some other parts.

[zebra]

I doubt the prop turns at 200,000rpm, the rotax 914 has a max crank rpm of 5800 (limited to max 5 mins) and an internal reduction gear of 1:2.273.

turning a prop at 200,000 rpm just isnt going to happen. That is way beyond supersonic. Also has a 2 speed prop.

Maybe you are confused with the 50:1 glide ratio, whih means for 1 ft drop in altitude you travel forward 50ft

[GTSBoy]

I just calculated the tip speed of a 1m diameter prop at 200,000 rpm at over 600 km/h. So there is definitely something not right there.

[zebra]

Ye to put it inter perspective, the little 9" diamiter fine pitch props for small scale RC race planes turn at ~11,000rpm...using an electric motor

[zebra]

I just calculated the tip speed of a 1m diameter prop at 200,000 rpm at over 600 km/h. So there is definitely something not right there.

oops...was thinking in MPH...which is why I said supersonic lol