HyperGears Twin ATR25 Turbocharger VG30DETT Build up Thread

have informed to our customer about the aftermarket dump pipe he's happy to use them for better result if it can give better result. Do they fit up good? how's quality, Don't want them to crack after few month.

 

Since you are the original poster i think its ok for me to reply.

I wont make any controversial comments about power increase or lack of it. but to answer your question they are good quality, polished stainless, all tig welded , fit with no modification and as far as i know they will not crack

 

make a new thread if u want to keep discussing it, we got our warning

 

Almost forgot about these Guys
Was trolling thru the skyline forum and i remembered , What ever happened to the Hypergear developmental 300zx ?
Any dyno graphs?
PPL are still looking for a reliable highflow option.

Regards
Trev

 

I'm using these turbos in my rebuild which will be starting in about 2 weeks, so hopefully I should be able to let everyone know how they go, Although my build won't be pushing them to 300rwkw, but hopefully 250rwkw or so with stock injectors.

 

Can I ask, why go with these turbos to make 250rwkw, stock turbos will push that. Or are you after the reliability? (20y/o turbos vs brand new)

I ask because i'm also aiming for around 250-260rwkw, and was intending to keep the stock turbos.

-Kirill

 

Yeah exactly mate, reliability. I know i can get new CHRAs for my stock turbos for around the same price as these, but I thought at least this way if in the future i do decided to try and make a bit more power i know these are good for 300rwkw~

I'll let you know how they go.

 

Cheers, keen to see how you go. Also what kind of response you'll get from them. Good luck!

-Kirill

 

[ Below information of the ATR25 turbocharger. They are currently retailed at $750 each. They require Braided oil feed lines for installation. You are welcome to see the project outcome before considering to make any purchases.



Can you tell me the actual wheel sizes ?..compressor and turbine wheel

 

these are the same?

that hypergear on ebay is selling for $770 the pair?
http://cgi.ebay.com.au/HyperGear-AT...ryZ72478QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
have the same page layout

 

That's

for 1 turbo, it should be for the pair!

 

In the title 'HyperGear ATR25 280HP T25 Turbocharger for Nissan 300ZX', the term 'Turbocharger' is singular, meaning one.

You may be mistaking this word for 'Turbochargers', which is plural, meaning more than one.

 

The price is for a single turbocharger. There's been quite few pairs sold at this point. Any one's got dyno sheets as yet? We can make them with even bigger internals now to boost them to 320HP each.

The project on this thread has been temporarily suspended as the project Z has knock sensors problems as well as issues with vibration over 60KM/H. Has taken the car to Nissan, 2x different toll shaft and diff specialists, tyres and wheel places, wheel balance places, cost over $2000 its got better but still not fixed. if any one had this sort of issue fixed please post up your solution.

 

bring it to joe in vermont... every1 talks him up

 

Just bypass the knock sensor using a 1meg resistor, vibration sounds much like centre bearing but i'm assuming the places you've taken it to would have already checked/ruled that out (hopefully).

And yes, if anyone can post up their dynos and/or results on these turbos that would be great.

 

Thanks for the information. Would you have any tutorials on those knock sensors? any diagrams would be great.

center bearing has been changed with toll shaft balanced and checked. The car isn't always in the state of vibration, there are times which are better then other times. Nissan said there is a issue with Diff which didn't do any thing after replacement.

 

Tech article HERE.

It's a pretty long and drawn out tech article for a VERY quick and simple job.
Just get a quarter watt, 1 megaohm resistor and fix it into the Det Sensor connector pins as illustrated in the photos in the tech article.

 

were the uni joints in the tailshaft replaced? if not then that is probably the cause of the vibration.

 

I'm looking at mine atm , rhs dump looks exactly the same as that one , lhs is different to rhs.
I'd take a photo but some tosser broke my cam on new years
anyways
[/QUOTE]