What turbo is this?
Turbo Mini Forums

I acquired this turbo from a Nissan 200 SX along with the Intercooler etc. It fits onto the MG Turbo Manifold as normal. It is also water cooled and it great condition.
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That turbo looks huge for a mini to me, good luck LOL

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

Upon measuring the turbines, I've found that the exhaust turbine, and housing is exactly the same size as the T3, it even uses the same exhaust outlet.

The inlet on this unknown turbo has a smaller diameter than the T3 but it has 3 blades in a row whereas the diameter on my T3 is larger but only has 2 blades next to each other in a row.

Post the numbers on here... the TB##### number that is...

It's almost definately a T2, but it looks like a very large compressor....

hum.....
difficult to answer , you'll be disapointed.
what is the real size of this turbo, what is the part number of this turbo?
i think it is from 2000 cc engine , do you really think that turbo matching is so compliant/hasardous, sure I would like to use the first good looking, in well condition turbo found, but turbo flows/matching are not working like this, they need very well matching to give the best of them, really , find a renault 5 gt turbo and you'll be the near possible of the goal / best turbo for a mini , and this up to 150/160 bhp........... these number make a mini moving :)
cheers
fab

Right it has no TB Number, I've checked all over, but Ihave the following from the metal tag.
'P.No 485795'

And one the compressor housing next to the Garret word it has 'A/R.48 M24'

Thats all thats on there.

If it's too large then I haven't really lost out as it only cost me ?10 with the intercooler and I'll just flog it on ebay

Well it looks like a T3 to me :)

alex

AlexF

I've just been out and double checked, the exhaust turbine on the unknown is definately a fair bit smaller in diameter than the T3 Metro unit, and they both have 11 blades.

T3 metro has 12 compressor blades overall and the unknown has 18

Why is turboing soo awkward

it might be a t28 then...

what year car was it off?

Alex

AlexF

I have no idea what the a/r means, I was hoping u guys could tell me that. 'A/R.48 M24'.

On the compressor side, it's bolted using a star shaped bolt just like my T3 unit.

By awkward, what I meant was it seems a bit confusing from my point of view as I'm still learning the turbo set up so I'm obviously not up with all the knowledge. To be honest I thought a 2000cc turbo would have been a lot bigger than my metro unit, but it's not.

Any of u guys live in sussex/surrey that wanna take a look for yourselves as you'll probably beable to identify it straight off.

From a nissan tuner I know... its one of these depending on the car it came off...

s13's use a t25

s14's use a t28

Alex

AlexF

Alex, I'm told its the S13

It had head lights that raise up like the MR2 and had a tacky spongy rear spoiler, if that helps

its an s13 then...

you have a t25 :)

Def usable on a mini.

Alex

AlexF

????????, this is hanging with the "fountain of knowledge" writed under your id
I'll not defend the t2 cause any more, but if you could explain me why you are advising to change the genuine factory matched T3 for the same laggy and now unmatched unit?

Majic about theA/r it is the main factor on the turbine side (generally comp A/R are often 0.48) it is the number which drive the turbo the lower the number (ex: 0.3) the better turbo respons and less lag you'll have but the high backpressure will kill the max rev hp ; if you increase the A/R (ex0.48) it will flow more and will deplace the rpm pic boost; the best is a compromise between lag and backpressure.
whatever don't miss that you are using a 1275cc which make less exhaust gaz ( so will have less to drive the turbine) than bigger engines but will also need less compressed air to boost it, so needing a wheel with more "torque" and less flow than a bigger engine; if you don't have the knwoledge/experience with turbos look at the near engine size HP genuine turbo car as the one you want to make ( and you'll have a factory matched turbo) so look for renault 5 1.4 turbos and fiat uno 1.4 turbos NOT for nissan's 2.0 turbo (they have more capacitys and their turbo are completely differents ( even if the hp could be matched ; the main is the flow vs pressure ratio which are completely diiferents (you'll need 1.2 bar to have 160 hp's on a mini, and 0.5 to have them on a nissan; this make an enormous diference)

"Parisien Turbo Expert" a well mached title I think!! cheers fab

Team Racing

Any turbo is usable on a mini... I made no comments about how well it is matched. I haven't had a chance to look at the comp maps for a t25 vs a t2 or t3...

so I have nothing to base this on, but here are a few general speculations!

The T3 is far too big for a std engine on std boost. A T2 is too small for our engines after about 130/140 bhp. So, there is potensial that a mid sized turbo, such as the t25 would be useful in some circumstances.

For the record, I didn't put the title "fountain of knowledge" under my name... Its was one of the Administrators! I'll freely admit I do offer my advice and opions on here, but they are all just that... my experience working with turbos (my last job) or from playing with them at home.

Alex

AlexF

Thanks Guys, Sorry to of caused some bother.

I suppose it's just a case of try it and see, either way i'm not really losing out.

cheers Jim, but i'm not recognise myself in this "high " title, I 'm addicted by turbo's ans so have readed a lot in french and english about them, my renault turbo past helped a lot in learning turbos , i also had friends who are building renault turbo track cars and specialy one who is working at turboing some race cars ( evolution , 993 lancia's etc etc) and this is my prefered source of knowledge as instead of passing time to read , working on the turbo, on the flow etc etc, they learning you in drinking beers :) (think that some here are drinking beer to work harry)
Alex , my words were slighlty over what I think, just please, don't advice for something which is totaly wrong, turbo matching is a very well known science, it is very easy with a little experience , mapping, reading,etc learning,
and sorry again: a correction, t2 can produce a lot more than 130 hp's, when I was modifying gt turbos the genuine little t2 turbo was up to produce about 175/180 hp's (and think that it use the smaller t2 wheels) ,then after these numbers hybrids and also t25's are considered this the limit were it is too small .
let the t25's for larger engines , the reason why sometimes some finds favour for it is that t25 are easily soursable units (saab's, rovers jap's etc etc)
drive a mini turbo with a tb02 unit a good intercooler 1bar of boost an you'll understand why I'm so sure of what I'm saying.
regards
fab

majic if your t25 has only cost you a tenna id try it and see give it a rolling road and if its no good put it up on ebay and fit another. all youll lose is your time.

no longer a series, but still 1.3 turbo.

Thats the idea. Suppose I'll just have to keep my eye out for a normal T3 aswell, but they're really hard to find.

I didn't advise... I mearly said it would work, and it will, in the same way a T3 works perfectly well.

Majic got the turbe very cheaply so what is the harm in him trying it? Will it be significantly worse than a T3?

If a t2 is so good after 130bhp why do the ACTs go sky high?

Alex

AlexF

what do you mean by ACTs?
and sorry guys, about this type of turboing, sure you are reason, sure I could explain surge lines comp efficiency but I'm wasting my time.
fab

ACT: Air charge Temperatures
I don't think they are that high personally. They start to climb as the boost and RPM increases, but so would any turbo, unless you have one that is oversized such that it does fall into the surge line at lower temps, completely missing the point of fitting a smaller turbo anyway...

Air charge temps as Dave says... sorry I do slip back into work jargon ocassionally. Why would you be wasting your time talking about surge lines and comp efficiency?

Well all know a T3 is too large for a std engine, hence it only just gets into the 65% comp efficiency. But if you look at Jimster's data logs (which I don't have here at the moment) you can see a defiante dis-proportional rise in ACTs just after peak torque (IIRC).

Haven't yet pulled out the T2 maps and looked at what sort of temps Jim should be getting, but it stands to reason that he is running his T2 in an inefficent area of the map.

Alex

AlexF