StavFC

As title really, the ones you see all over ebay etc.
They are cheap, are nowhere near a 'real' GT45, but are well proven on a lot of budget V8s and the slightly odd wheel size may actually be a good thing for a rotary.

They have a 67mm compressor inducer, so big, but not super big, but most interestingly they have a 87mm turbine (divided T4, about 1.0 a/r), far far bigger than the usual Garretts with that size compressor, and as we know, rotaries seem to like a big turbine wheel.

Ive experienced one on a 2JZ and it spooled well to be honest, and seems to on V8s (but anything does), but no idea on a rotary.

Anyone dared to try one? Ive noticed a few on projects, but never a running 13B.

rx72c

iTrader: (8)

You will get fullboost by 5000rpm or just abouts and they can make around 600rwhp on 30psi maxed out.

They are not a responsive turbo.

jamespond24

iTrader: (13)

I'm going to have to try the chinese turbo in my next project. I think the turbo are better made than before that has so much problems. If you try it let me know how it goes?

StavFC

I wouldnt call them as good a quality as some (though TBH I know people running Chinese Holset copies that have lasted a lot longer than the equivalent Garrett GTs, but maybe thats just showing the awful quality of the Garrett supplier over here, lol), but they do seem to last ok.
One things for sure, even the ones that blow have never had the compressor housing fall in two, lol, I cant believe anyone thinks thats for real.

James- Will do. Though I know from other ones that on the whole they seem to be ok.

arghx

iTrader: (3)

sounds like this is somewhere between a Garrett T04R/T04Z and a Garrett GT40 in terms of compressor wheel dimensions

NoPistons!

iTrader: (3)

Damn stav. Didn't you already have a big *** turbo on that thing? You want MORE power? ****. Please put up some video in the "proper section" soon!

Thank you for having a brain and the ability to think logically in terms of ebay turbos.

I'm going to run one. Godspeed GT3582 prolly. Anti surge porting and v band hotside...wut?! $250 shipped, wut?! Compatible with off the shelf brand name wheels/parts...wut?!

People just hate because they dont like seeing people pay pennies on the dollars they spent on a unit that cost many times more. Oil feed restrictor is a given with these turbos and ALWAYS double check to make sure they're properly balanced and no worries. It's THAT simple. You'd think people would know better by now.

Saner

iTrader: (1)

I'm not hating, in fact I haven't even bought my turbo yet (in the process of going single). Although I have never had a Chinese turbo, I have read many bad things about them. All hear-say, sure, but call it what you want. I just try to learn from other's mistakes. I wouldn't take the chance of F'ing up my car by not going with a proven piece of equipment. Stuff that doesn't have moving parts, maybe.. but something that is spinning @ 100,000+RPM and subjected to extreme heat? No way.

That's just my $.02. I was just trying to offer some warning and my opinion. Take it for what it's worth. I wasn't hating nor trying to offend anyone. If I did, my apologies.

rx72c

iTrader: (8)

Nothing wrong with this chinese turbo in particular in terms of reliability.

They just dont spool up very well and youll make no more then 450-470rwhp on 20psi.

a_reyes1014

iTrader: (1)

I have one on my car now and yes it doesn't spool very well but then again I'm not finished tuning it. When it's on full boost it feels pretty good. Can't complain for what I paid for it and it's only boosting 13lbs right now. I'm sure once you crank the boost up it will feel pretty good.

rx72c

iTrader: (8)

Yes when you crank the boost up the come on much stronger.

Come alive around 20psi.

arghx

iTrader: (3)

I've seen some ebay turbos hold up for a while. They seem to last longer than ebay manifolds.

Jezzza

iTrader: (1)

im running a similar turbo, chinese copy, but a bigger wheel sized turbo
(same wheel sizes as a Garrett GT42)
its stamped with 'GT45 Y2004K'
I believe there are 2 sizes, the one you are talking bout it obviously the smaller one

i wouldnt say they are the most responsive turbos, but it comes on very hard, but then again what do u expect for a big turbo?
boost starts about 3800-4200, and full boost at about 5000rpm (from memory, havent driven my car in about 6 months)

my last tune (with a high mount manifold, stuffed wastegate and a dodgey EBC) i pulled 350rwhp
im currently redoing my setup with a low mount manifold, profec b 2, tial 44mm, new dual exhaust with hi-flow cat etc. on pump fuel (98) and expecting to see over 400wrhp
ive been running my turbo for about 6 months with no problems, and i thrash it around

my workmate has a magazine that has an article dealing with china turbos, and they have to worries about the "larger" frame chinese copies, eg to4e or bigger
but it also warns that there are "good" copies and also "bad" copies.. so do some research

there are quite a few v8 and rotary guys running chinese turbos on their drag cars in Australia with some great results!

rx72c

iTrader: (8)

Jezza. I know the manufacturer in china that makes them. THEY ARE ALL THE SAME. They all have a 68mm inducer(close enough).

turbotoaster

http://cgi.ebay.co.uk/ws/eBayISAPI.d...%3DI%26otn%3D2

these the ones your on about stav, i heard the supra made some decent power on it.

looking at the specs its

CHINA GT45 Garrett GT4202

Turbine Wheel Turbine Wheel
Exducer: 77.5mm Exducer: 75mm
Inducer: 87.9mm Inducer: 82mm

Compressor Wheel Compressor Wheel
Inducer: 65mm Inducer: 74.3mm
Exducer: 99mm Exducer: 102mm


so going off that it seems the comp wheel is smaller but then the turbine wheel is bigger.

Howard and Zero i think mention that its best to try and get the wheels of similar size for a rotary to make good power and it not drop off at high rpm.

china gt45 97.9% matched
gt4202 77% matched

so i think it has the potential to be a good turbo, remember rx72c says 600whp, that will be oz/uk dynodynamics figures so thats about 700bhp at the fly, for USA whp figures on there dynojets add 15%

NoPistons!

iTrader: (3)

Yeah. Word to that.

Dirty stainless and thin walled runners usually excite failure.


I think it's a pride thing. Nobody wants to admit they are running said turbo on the internet because people will "SEE" and "MAKE FUN" but there are literally thousands of people buying these things and a good percentage are kicking *** with them.

I'm really eager to try one of the dbb/sbb units but i have to pump myself up before dumping $450 on a china turbo with NO reviews whatsoever.....anywhere.

Some companies go as far as to put up micrometer measurments with their auctions on ebay just so you can compare sizing.

The gt35's are all spot on with their garrett equivilents.

I want to see the actual chra from both the single and dual ball bearing cdms to verify..... None of the venders want to comply with my requests so it seems a bit sketchy to invest in one.

Nice to see where you guys are getting boost with the gt45's though.

Port and exhaust setup has alot to do with spool. Also twin scroll vs standard plays a role.

5000rpm isn't a bad point to be at peak boost by any means.

StavFC

Toaster- Yeah thats the one. The measurments they give, and the measurments others have got when they measure their own seem to differ (my measurments were what buyers seem to measure it as), but only by a slight amount.
And you're right, ive seen a road going red supra on road tyres and a 6 speeder knock out low 10s on one of these with ease, and until he changed to a BW the Mk3 drag car ran one of these into the 8s didnt he?

turbotoaster

well from my basic turbo theory, its the compressor wheel that tells you how much theoretical power you can possibly make, the turbine wheel tells you how much of that power you can actually have.

going off that the gt42 should flow 100lbs of air, but running a large a/r to maximise power at high rpm but at the cost of low rpm boost threshold, luckily a rotary will spool large turbos if a proper divided manifold is used.

the china gt45 should flow around 85lb of air but due to the larger turbine wheel will hold onto that power till very high rpm, give you the full 85lbs, plus would hopefully give slightly lower EGT temps due to less backpressure from a larger wheel.

the china gt45 is very similar to the masterpower gt45 only with a slightly smaller compressor wheel.

strangly enough i have the compressor map for the masterpower gt45 if anyone wants to look at it, you would imagine by the size of the wheels it would be impressive, at least matching the gt4202, but unfortunately it doesnt and can only flow around 85lbs.

It would be interesting to see if i could hit 200mph on a £300 turbo but i think it would be very close as i need 610whp and rx72c said 600whp at 30psi but didnt mention what the engine setup was.

Im not really sure what the mk3 ran, ill do a bit of research in a bit while im bored at work

cant find any spec on the mk3

only that in 2007 it was 900bhp and ran 8.013 @ 173.14mph
and 2008 it was 1200bhp and ran 7.781s @ 174.93mph which doesnt seem much of an improvement if the power went up as much as they say

just startn

iTrader: (33)

all turbos are made in china now. all the cores. **** up here i ncleveland thats all you get is chinabay everywere. ive seen alot of power made on them but yeah there not BB or dual BB soo there just like any other journal bearing bigg *** turbo

ozmodgrant

hi guys and also Jezza,
What rx72c is saying is not correct ,we have our own gt45 type turbo with a 76mm inducer wheel on the inlet and a much larger sharft then any other china type turbos in this style ,SO THEY R NOT ALL THE SAME AS STATED :their is really so many copy of a copy over their and most turbo factorys r poor quality scratch:
We have had them made to our specs and not just some trading company selling all over the internet ,i have work very closely with the engineers and staff to make sure all our items from proboost perform as well or in some cases even better due to our development of mixing and matching of exhaust housing to come up with some really great combos for drift,drag and street both in piston and rotary powerd motor cars , we have and still do supply to many well known piston and rotary shops here in australia and even over seas ,but like anything or any brand or part thye can fail as we and other companys can not control the fittment and conditions the products r use for ,We give 12mnths warrantty on all our turbochargers and other parts , i have been involved with rotary and piston motors for over 15yrs and have had my fair share of fast street cars and drag cars here in australia ,i do have alot of information about what i sell and use ,the problem with cheaper parts is that people r quick to point the finger at the no name branded parts ,but to find later on it was not the problem at all ,thats just cars for you anyway enough said here and on a nicer note i would like to share some photos the proboost new car if anyone can help put the pics up or tell me how to do ,hope next few months to be running into the 7 sec zone with our mazda rx7 ser 5 using our inhouse built 13b turbo ,custom inlet and so on
if you would like any correct info on our products or just want to drop any feed back please pm me or contact us through our website
regards grant dixon

SmogSUX

iTrader: (12)

Yeah...I'd rather just run a remaned Holset. Got an HX40 for $536 shipped and it was rebuilt and balanced..could scoop up an HX52 for the power goals you're looking for for the same price roughly. And Holsets are proven.

turbotoaster

found you on OZ ebay and sent you a message through one of your inlet manifolds, let me know if you get it

apexFD

http://forcedinductions.com/productsborgwarner.htm

Why waste money on something that will not last when the 400 series borg warners are so cheap??

=Benjamin

ScorpionT

iTrader: (3)

True. But remember, the S400 series is a VERY large turbo.

NoPistons!

iTrader: (3)

Do you KNOW it wont last?

Do you have first hand experience?


Make sure the turbo is balanced and you run a proper oil feed restrictor as well as checking if your compressor wheel has loctite on it (you are the qc when you buy these turbos or ANY TURBO regardless of brand) and it's all good.

"buy name brand because it's better"

No....it really isn't. The extended tip spool on bw turbos do make them more worthwhile. I will say that but dont throw up the "quality" ****.

StavFC

Yeah, these GT45s are proven to live well on the whole, hence why I started the post.

Regarding the BWs, they only comparably cheap if we talking the $600 ones.

But...

How would the 1.10 a/r T6 S400-72 ETT spool in comparison?