Garrett T25 specs or any kind of info - Saxperience

Rowan · 17th September 2012, 09:07

Good day all,

I've sourced this T25 locally, it has been revised and was a bargain.

Now I'm trying to find out what specs it has, tried google and mailed Garrett but so far nothing yet.

I know there are a few turbo-experts on here, could someone tell me what I've bought

rorz_vts · 17th September 2012, 10:07

Go on the garrett website and put on that number and it should come up with the spec mate

Rowan · 17th September 2012, 10:30

Already tried that mate, didn't work though.

www.turbobygarrett.com
http://www.turbomaster.info/eng/turb...fy_garrett.php
http://garrettbyhoneywell.com/product-search/

All came up with nothing

Rowan · 18th September 2012, 08:10

Anyone?...Not even "GoldenTurbo" Ross? Or Andrew (Blackie_2k5)?

I've come to the conclusion it has got a T2 inlet housing though..

Rowan · 4th October 2012, 10:07

I've figured it out! Well I've had some help from Turbo Hoet (Garrett dealer in the Netherlands)

It's a T2 core and compressor housing from a 1994 Renault 5 GT Turbo with a T25 turbine housing.

Has a turbo from a renault 5 gt turbo ever been bolted on a saxo 16v? I've tried the search but it came up empty..

Ross^p · 4th October 2012, 10:22

really sorry I didn't see this earlier or I would have helped

Pleased you got it sorted! I don't think anyone has used an R5 turbo on a saxo yet, but if you can get the inlets/outlets to line up with some custom pipework, go for it. I will say that they don't make a lot of power, and HATE high boost with a passion (high in this case is more than around 14psi). Over this you really cut the life expectancy.

Interestingly also the actuator used there is non-adjustable. The standard R5 actuator arm is adjustable via a spanner/nut arrangement. Wonder what that one is from

Let us know how you get on!

Rowan · 4th October 2012, 10:51

No problem mate, glad it caught your eye now

Compared to your ridiculous herd of horses "not a lot of power" is pretty relative

What would be a realistic target with this turbo? (assuming that I can run it with 1 bar /14 psi)

in- and outlet piping shouldn't be a problem, I have a fair bit of experience with stainless TIG welding and lots of 304L 2 / 2.5" piping at my disposal.

Ross^p · 4th October 2012, 10:56

I'd say with supporting mods, this turbo will make low 200's bhp - maybe 230bhp at around a bar. But it will be on it's limit there and you should keep an eye on inlet temperatures if you can. Will you be using the standard (plastic) inlet manifold?

What size pipework will you use? If you will be happy with the sort of power I say (230ish) then you can stick to smaller pipework (2" for example) and a smaller intercooler. This would make for an amazing fast spool with no lag

Rowan · 4th October 2012, 11:40

I would be really happy with 200-ish bhp, and will get the mods necessary for this. For now I'm still gather bits and bobs, my desk job leaves me loads of time to scour the internet

I am planning on using the original plastic inlet manifold, guessing that would be an issue?

I will use 2" ic piping and 2.5" exhaust, no lag and fast spool would be my aim for now as driveability is a priority for me

Ross^p · 4th October 2012, 11:49

Quote:

Originally Posted by RowanVtr

I would be really happy with 200-ish bhp, and will get the mods necessary for this. For now I'm still gather bits and bobs, my desk job leaves me loads of time to scour the internet

I am planning on using the original plastic inlet manifold, guessing that would be an issue?

I will use 2" ic piping and 2.5" exhaust, no lag and fast spool would be my aim for now as driveability is a priority for me

no no the standard inlet is fine at this power level/pressure - it was just a question

Good choice on the pipework.

remember boost pressure is technically your enemy - it's not a good indicator of performance, only an indication of restriction. With restriction comes friction, and in turn, heat. You want the most power with the least restriction. BUT... removing restriction (bigger IC or pipework, bigger plenum etc) add's volume, in turn, adding lag.

Find the balance and you have a very fun car!

If you plan to use this car on the roads, it's much better to have a smaller turbo with less lag than a big turbo for sure. Around town or on back roads, a car like this with 200bhp or so will really upset a lot of other cars as it will be so quick in this speed range! I had probably the most fun driving on the road with my gt28 and only 280bhp. Was just grin grin all the time!

I hope you enjoy it!

Rowan · 4th October 2012, 12:01

Thanks for the help so far! Takes me back to when I was in school learning for 1st mechanic

Speaking of which, I still have some (I think) useful books on the shelf.

"Street Turbocharging" by Mark Warner and "4 stroke performance tuning" by A. Graham Bell

I'll open those up again

Will keep you posted with my progress and maybe bother you with some questions if you don't mind

Ross^p · 4th October 2012, 12:24

of course - it's no bother at all

PS - I have read (a LONG time ago - maybe 20 years ago now

) the Graham Bell book. It's very good for beginners new to tuning.

I also read a lot of books by Dave Vizard (most A series engines when 20 years ago I was tuning minis!) - http://www.amazon.co.uk/Tuning-Briti...9349773&sr=1-6

It's obviously aimed at the A series, but contains invaluable information for general knowledge you can apply to lots of engines. If you get a chance to browse a copy, I highly recommend it!

ThrushMotorsport · 4th October 2012, 12:35

Quote:

Originally Posted by Ross

of course - it's no bother at all

PS - I have read (a LONG time ago - maybe 20 years ago now

) the Graham Bell book. It's very good for beginners new to tuning.

I also read a lot of books by Dave Vizard (most A series engines when 20 years ago I was tuning minis!) - http://www.amazon.co.uk/Tuning-Briti...9349773&sr=1-6

It's obviously aimed at the A series, but contains invaluable information for general knowledge you can apply to lots of engines. If you get a chance to browse a copy, I highly recommend it!

Might have a gander for these, I'm away to build my shell from the ground up including a jp4, allready sorted out a unit - could be usefull for me

Ross^p · 4th October 2012, 12:40

The Graham Bell book has been around as long as I've been alive almost (it's been revised a few times lol) - it really does explain things in layman's terms but gives plenty of detail where needed.