5 Turbo 1 and 2 Turbo re-build or replace

[jamesc]

Howdy folks

Those of you at the RS tuning rolling road day may have notice a little bit of blue smoke on overrun from Bougie, possibly meaning the turbo could do with a re-build? it's the oil cooled T3, which was cutting edge 30 years ago:


There's next to nowt on the net about uprated turbos for these cars...in English anyway....so I guess I need to be looking at a re-build/hybrid?? I'm not really looking to go larger...it has plenty of lag already!!

Can anyone recommend somewhere to get this kind of work done, or alternatively an uprated item? Below is one build I found:

http://www.renaultalpine.co.uk/viewtopic.php?f=8&t=7047

Only info given is:
The T3 turbo required a rebuild so we decided to go for a larger billet compressor wheel, -34 actuator, 360 degree bearing new turbine and shaft and a larger .48 turbine housing which was flowed and polished.

Any comments would be appreciated

 

[jamesc]

According to the Turbo Technics catalogue & a French R5 turbo forum, the turbo on the car is a Garrett TB0310 with turbine A/R 0.36...

& from some translated info I've got on the Renault Sport 200 CV kit says that the turbo does not need to be changed but a 'replacement turbo (360 degree main thrust bearing 10% fan blade clip, larger compressor housing)' is recommended.

[Is this info from the Peter Meaney book, can anyone confirm...?]

 

[Clarkey]

Can anyone recommend somewhere to get this kind of work done,

Bernies Blowers...... does my turbos and lots of racers.
Top man, I can pass his number on so you can have a chat or find him on FB.

 

[jamesc]

Bernies Blowers...... does my turbos and lots of racers.
Top man, I can pass his number on so you can have a chat or find him on FB.

Thanks, can you let me know his number I'll sound him out. Mama says Facebook is the Devil.

 

[Mart]

I've used Turbo Dynamics quite a bit over the years, from their hybrid GTT blowers, to mod'ing an Evo9 blower that I fitted onto my old Evo6.

They'll be able to rebuild/overhaul yours, and can probably offer different size wheels etc if you wanted to go down that avenue?

 

[DaveL485]

Old skool oil-cooled! Interested in upping the ante to a water cooled core? Lots more choices then.

 

[andybond]

I would rebuild the original with a 360 bearing and have done.

If you increase the boost , who knows what else will fail? Things like you have should be treated with a bit of respect and not eeking power out of it.

If your feeling flush , bang a f7 or f4 turbo lump in there and keep that block for Sunday best.

 

[jamesc]

I've used Turbo Dynamics quite a bit over the years, from their hybrid GTT blowers, to mod'ing an Evo9 blower that I fitted onto my old Evo6.

They'll be able to rebuild/overhaul yours, and can probably offer different size wheels etc if you wanted to go down that avenue?

Thanks Mart I'll give them a shout, and see what advice they have

Old skool oil-cooled! Interested in upping the ante to a water cooled core? Lots more choices then.

Totally open for suggestions tbh..........but only would consider making it complicated if there is benefit to be had. There's not much room in that boot to be sticking much larger stuff in there....I think with water cooling I'd just end up sending to much heat to engine..? The distance from turbo to radiator was thought by Victorian medical advice to be a 'bracing walk to cure ague'

I would rebuild the original with a 360 bearing and have done.

If you increase the boost , who knows what else will fail? Things like you have should be treated with a bit of respect and not eeking power out of it.

If your feeling flush , bang a f7 or f4 turbo lump in there and keep that block for Sunday best.

Boost I think is about 0.9 bar. The 200 CV kit mentions fiddling with the wastegate without changes in fuel supply so it can take it, to a point, but yeah I'm not playing for numbers - if it goes & sounds well that's all good for me

hehe yeah a later Renault lump would go well, get more MPG and probably be more reliable....but where's the fun in that?? . As we all have I've been putting up with this OHV engine since 15 yrs old no need to start developing meself now

Thanks very much for the advice chaps, I'll give Turbo Dynamics and Bernie a shout. I think I'm leaning towards a hybridised version of what's in there already...will update....

edit boost pressure is 12 psi/0.84 bar

 

[Mart]

Turbo Technics are good guys too, as are Owen Developments. All of them will be able to offer good advice on what to do with your blower.

 

[jamesc]

Turbo Technics are good guys too, as are Owen Developments. All of them will be able to offer good advice on what to do with your blower.

Thank u, will add them to the list

Although I once spoke to Owen's about this 19T turbo for my Volvo

http://www.owendevelopments.co.uk/article/104/New_bolt_on_375bhp_turbo_for_Volvo_850_/

...and the chap on the end of the phone couldn't answer the question - what did you do the car to get/cope with 375 hp. Near 400 brake is not a small number for a white block. Mine's supposed to be about 300-320 at the moment on standard internals with an 18T & would need quite a lot of work to go higher, safely. They might of just been having a bad day but was ready to take 1000 quid (plus VAT!!) for something that would turn into an expensive paperweight without a bit of information to back it up.

 

[Clarkey]

Here's Bernies number mate 07812 485833.
Tell him Dave Clark sent you and have a chat

 

[jamesc]

Here's Bernies number mate 07812 485833.
Tell him Dave Clark sent you and have a chat

Cheers fella will do

 

[DaveL485]

Plumbing a water cooled unit isn't hard, it's quite literally a water in and a water out pipe, T'd into somewhere, or looped into somewhere in the cooling circuit. When I switched the 9 Turbo over, I just added it in to the carb base circuit IIRC.

 

[Brigsy]

From memory the turbo2 is some kind of drawthrough setup on the k-jet so the compressor housing will need relevant seals compared to a normal turbo which might limit the options for a hybrid blower

 

[jamesc]

From memory the turbo2 is some kind of drawthrough setup on the k-jet so the compressor housing will need relevant seals compared to a normal turbo which might limit the options for a hybrid blower

You could be right mate, just talked to Owen Developments - I may as well have asked for a new turbo for my stegosaurus.

Set up is below
http://www.renault-5.net/shemas_turbo1.htm#animation



Throttle plate b4 turbo as you say. Welcome to the 80's!

I've spoken to John the guy who made the thread on the Alpine forum, he knows what he is doing, and arranged to call Bernie later today....so will get there in the end

 

[DaveL485]

I may as well have asked for a new turbo for my stegosaurus.

ROFL! Stegbosaurus?

Didn't know it was a pull through throttle. @Moggy what are the blower options you nerdolithic bag of welsh geek?

 

[jamesc]

ROFL! Stegbosaurus?

Yeah - "Hi, I've got a T3 from the late Jurassic period, what can you do for me...?"

 

[smart5]

You need to make sure they fit a new carbon seal on the impeller side, else it will smoke badly.

 

[jamesc]

You need to make sure they fit a new carbon seal on the impeller side, else it will smoke badly.

thank you sir, I didn't know that

 

[Brigsy]

Yep carbon seal needed on compressor side. Get the current blower rebuilt for now then go efi in the future like we were talking about at rs tuning. You could prob do a nice bolt on conversion with minimal mods incase you want to go back to stock, no problem with turbo upgrades, fuel economy, power gain etc